TIU CHUN VIT NAM

TIU CHUN QUC GIATCVN 5699-1 : 2010THIT B IN GIA DNG V THIT B IN TNG T - AN TON - PHN 1: YU CU CHUNG

Household and similar electrical appliances - Safety - Part 1: General requirementsLi ni u

TCVN 5699-1:2010 thay th choTCVN 5699-1:2004;

TCVN 5699-1:2010 hon ton tng ng vi IEC 60335-1:2010;

TCVN 5699-1:2010 do Ban k thut tiu chun quc gia TCVN/TC/E2 Thit b in dn dng bin son, Tng cc Tiu chun o lng Cht lng ngh, B Khoa hc v Cng ngh cng b.Li gii thiu

Tiu chun ny nu cc mc c chp nhn v bo v chng cc nguy him v in, c, nhit, chy v bc x ca cc thit b khi hot ng trong iu kin s dng bnh thng c tnh n hng dn ca nh ch to. Tiu chun ny cng cp n nhng trng hp bt thng d kin c th xy ra trong thc t v c tnh n cch m cc hin tng in t trng c th nh hng n hot ng an ton ca thit b.

Tiu chun ny c xt n cc yu cu qui nh trong b tiu chun TCVN 7447 (IEC 60364) nhng ni c th tng thch vi qui tc i dy khi thit b c ni vo ngun in li. Tuy nhin, cc qui tc i dy c th khc nhau cc quc gia khc nhau.

Nu cc thit b thuc phm vi p dng ca tiu chun ny cng c cc chc nng c cp trong cc phn 2 khc ca b tiu chun TCVN 5699 (1EC 60335), th p dng cc tiu chun phn 2 lin quan cho tng chc nng ring r mc hp l. Nu c th, cn xem xt nh hng gia chc nng ny v cc chc nng khc.

Nu tiu chun phn 2 khng nu cc yu cu b sung lin quan n cc nguy him nu trong phn 1 th p dng phn 1.

CH THCH 1: iu ny c ngha l cc ban k thut chu trch nhim i vi cc tiu chun phn 2 xc nh rng cc yu cu c th i vi thit b ang xem xt khng nht thit phi a ra cc yu cu cao hn so vi yu cu chung.

Tiu chun ny l tiu chun h sn phm cp n an ton ca cc thit b v c u tin hn so vi cc tiu chun ngang v cc tiu chun chung qui nh cho cng i tng.

CH THCH 2: Khng p dng tiu chun ngang v tiu chun chung c cp n nguy him v cc tiu chun ny c xt n khi xy dng cc yu cu chung v yu cu c th i vi b tiu chun TCVN 5699 (IEC 60335). V d, trong trng hp cc yu cu v nhit b mt trn nhiu thit b, khng p dng tiu chun chung, v d ISO 13732-1 i vi b mt nng, m ch p dng cc tiu chun phn 1 v phn 2 ca b tiu chun TCVN 5699 (IEC 60335).

Mt thit b ph hp vi ni dung ca tiu chun ny th khng nht thit c coi l ph hp vi cc nguyn tc an ton ca tiu chun nu, thng qua kim tra v th nghim, nhn thy c cc c trng khc gy nh hng xu n mc an ton c cp bi cc yu cu ny.

Thit b s dng vt liu hoc c cc dng kt cu khc vi ni dung c nu trong cc yu cu ca tiu chun ny c th c kim tra v th nghim theo mc ch ca cc yu cu v, nu nhn thy l c s tng ng v cn bn th c th coi l ph hp vi tiu chun ny.

Di y l nhng khc bit tn ti cc quc gia khc nhau:

- 5.7: Nhit mi trng l 25 C + 10 C (Nht Bn).

- 5.7: Nhit mi trng l 27 C 5 C (n ).

- 6.1: Khng cho php c cc thit b cp 0 v thit b cp 01 (c, o, B, Cng ha Sc, Phn Lan, Php, c, Hy Lp, Hungari, n , Israen, Ailen, , Niu zi lan, H Lan, Na Uy, Ba Lan, Singapo, Slovax, Thy in, Thy S, Anh).

- 7.12.2: Khng p dng cc yu cu i vi cch ly hon ton (Nht n).

- 13.2; C gi tr khc bit v mch th nghim v mt s gii hn dng in r (n ).

- 22.2: Khng th tun th c on th hai ca iu ny cp n thit b cp I mt pha c phn t gia nhit, do h thng ngun cung cp (Php v Na Uy).

- 22.2: Yu cu c thit b ng ct hai cc hoc c cu bo v (Na Uy).

- 22.35: Cc b phn kim loi chm ti c cch ly vi cc b phn mang in bng b phn kim loi ni t khng c xem l c nhiu kh nng tr nn mang in khi hng cch in (M).

- 24.1: Cc yu cu trong tiu chun thnh phn ca IEC c thay bng cc yu cu lin quan ca tiu chun thnh phn qui nh UL60335-1 v cc phn 2 (UL60335-2-x) (M).

- 25.3: Khng cho php c mt b dy dn ngun (Na Uy, an Mch, Phn Lan v H Lan).

- 25.8: Khng cho php thit b cp I c dy ngun 0,5 mm2 (c v Niu zi ln).

- 26.6: Din tch mt ct ca rut dn l khc (M).

- 29.1: S dng in p xung danh nh khc gia 50 V v 150 V (Nht Bn).THIT B IN GIA DNG V THIT B IN TNG T - AN TON - PHN 1: YU CU CHUNG

Household and similar electrical appliances - Safety - Part 1: General requirements

1. Phm vi p dng

Tiu chun ny qui nh v an ton i vi cc thit b in gia dng v cc mc ch s dng tng t, c in p danh nh khng ln hn 250 V i vi thit b mt pha v 480 V i vi cc thit b khc.

CH THCH 1: Thit b hot ng bng pin/acqui v cc thit b c cp in bng ngun mt chiu cng thuc phm vi p dng ca tiu chun ny.

Thit b khng nhm s dng bnh thng trong gia nh nhng i khi c th l ngun gy nguy him cho cng chng, v d nh cc thit b c thit k nhng ngi khng c chuyn mn s dng trong cc ca hiu, trong ngnh cng nghip nh v trong cc trang tri, cng thuc phm vi p dng ca tiu chun ny.

CH THCH 2: V d v cc loi thit b nh vy l cc thit b cp liu, thit b lm sch dng cho mc ch thng mi, v cc thit b dng trong cc hiu lm u.

chng mc c th, tiu chun ny cp n cc mi nguy him thng gp m thit b c th gy ra cho mi ngi bn trong v xung quanh nh . Tuy nhin, ni chung tiu chun ny khng xt n

- nhng ngi (k c tr em) m

nng lc c th, gic quan hoc tinh thn; hoc

thiu kinh nghim v hiu bit

lm cho h khng th s dng thit b mt cch an ton khi khng c s gim st hoc hng dn;

- vic tr em a nghch vi thit b.

CH THCH 3: Cn lu :

- i vi thit b s dng trn xe, tu thy hoc my bay, c th cn c cc yu cu b sung:- cc c quan c thm quyn v y t, bo h lao ng, cung cp nc v cc c quan c thm quyn tng t c th qui nh cc yu cu b sung.

CH THCH 4: Tiu chun ny khng p dng cho:

- thit b c thit k dng ring cho mc ch cng nghip;

- thit b c thit k s dng nhng ni c iu kin mi trng c bit nh kh quyn c cha cht n mn hoc cht chy n (bi, hi hoc kh);

- thit b nghe, nhn v cc thit b in t tng t (TCVN 6385 (IEC 60065));

- thit b phc v cho mc ch y t (TCVN 7303 (IEC 60601));

- dung c in cm tay truyn ng bng ng c (TCVN 7996 (IEC 60745));

- my tnh c nhn v cc thit b tng t (TCVN 7326-1 (IEC 60950-1));

- dng c in i ng truyn ng bng ng c (IEC 61029).

2. Ti liu vin dn

Cc ti liu vin dn sau y l cn thit cho vic p dng tiu chun ny. i vi cc ti liu ghi nm cng b th p dng bn c nu. i vi cc ti liu khng ghi nm cng b th p dng bn mi nht (k c cc sa i).

TCVN 4255:2008 (IEC 60529:2001), Cp bo v bng v ngoi (m IP)

TCVN 6610 (IEC 60227) (tt c cc phn), Cp cch in bng polyvinyl clorua c in p danh nh n v bng 450/750 V

TCVN 6615-1:2009 (IEC 61058-1:2008), Thit b ng ct dng cho thit b - Phn 1: Yu cu chungTCVN 6385:2009 (IEC 60065:2005), Thit b nghe, nhn v thit b in t tng t - Yu cu v an tonTCVN 6639 (IEC 60238), ui n xoy ren Eison

TCVN 7294-1 (ISO 2768-1), Dung sai chung - Phn 1: Dung sai cc kch thc di v kch thc gc khng c ch dn dung sai ring

TCVN 7722-1:2009 (IEC 60598-1:2008), n in - Phn 1: Yu cu chung v cc th nghim

TCVN 7699-2-78 (IEC 60068-2-78), Th nghim mi trng - Phn 2-78: Cc th nghim - Th nghim Cab: Nng m, khng i

TCVN 8086 (IEC 60085), Cch in - nh gi v nhit v k hiu cp chu nhit

TCVN 8241-4-2 (IEC 61000-4-2), Tng thch in t (EMC) - Phn 4-2: Phng php o v th - Min nhim i vi hin tng phng tnh in

TCVN 8241-4-3 (IEC 61000-4-3), Tng thch in t (EMC) - Phn 4-3: Phng php o v th - Min nhim i vi nhiu pht x tn s v tuyn

TCVN 8241-4-5 (IEC 61000-4-5), Tng thch in t (EMC) - Phn 4-5: Phng php o v th - Min nhim i vi xung

TCVN 8241-4-6 (IEC 61000-4-6), Tng thch in t (EMC) - Phn 4-6: Phng php o v th - Min nhim i vi nhiu dn tn s v tuyn

TCVN 8241-4-11 (lEC 61000-4-11), Tng thch in t (EMC) - Phn 4-11: Phng php o v th - Min nhim i vi cc hin tng st p, gin on ngn v bin ng in p

IEC 60061-1, Lamp caps and holders together with gauges for the control of interchangeability and safety - Part 1: Lamp caps (u n v ui n c cc dng kim tra kh nng lp ln v kim tra an ton - Phn 1: u n)

IEC 60068-2-2, Environmental testing - Part 2-2: Tests - Test B; Dry heat (Th nghim mi trng - Phn 2-2: Cc th nghim - Th nghim B: Nng kh)

IEC 60068-2-31, Environmental testing - Part 2-31: Tests - Test Ec: Rough handling shocks, primarily for equipment-type specimens (Th nghim mi trng - Phn 2-31: Cc th nghim - Th nghim Ec: Xc khi thao tc qu mc, ch yu i vi cc mu l thit b)

IEC 60068-2-75, Environmental testing - Part 2-75: Tests - Test Eh: Hammer tests (Th nghim mi trng - Phn 2-75: Cc th nghim - Th nghim Eh: Th va p)

IEC/TR 60083, Plugs and socket-outlets for domestic and similar general use standardized in member countries of IEC (Phch cm v cm dng trong gia nh v cho cc mc ch chung tng t c tiu chun ha cc nc thnh vin IEC)

IEC 60112:2003 (Sa i 1:2009), Method for determination of the proof and the comparative tracking indices of solid insulating materials (Phng php xc nh ch s phng in b mt v ch s phng in tng i ca vt liu cch in rn)

IEC 60127 (tt c cc phn). Miniature fuses (Cu chy c nh)

IEC 60245 (tt c cc phn), Rubber insulated cables - Rated voltages up to and including 450/750 V (Cp cch in bng cao su - in p danh nh n v bng 450/750 V)

IEC 60252-1, A.C. motor capacitors - Part 1: General - Performance testing and rating - Safety requirements - Guide for installation and operation (T in dng cho ng c xoay chiu - Phn 1: Qui nh chung - Th nghim v thng s tnh nng - Yu cu v an ton - Hng dn lp t v vn hnh)

IEC 60309 (tt c cc phn), Plugs, socket-outlets and couplers for industrial purposes (Phch cm, cm v b ni dng cho mc ch cng nghip)

IEC 60320-1, Appliance couplers for household and similar general purposes - Part 1: General requirements (B ni thit b dng trong gia nh v cc mc ch tng t - Phn 1: Yu cu chung)IEC 60320-2-2. Appliance couplers for household and similar general purposes - Part 2-2: Interconnection couplers for household and similar equipment (B ni thit b dng trong gia nh v cc mc ch tng t - Phn 2-2: B ni lin kt dng cho gia nh v thit b tng t)

IEC 60320-2-3, Appliance couplers for household and similar general purposes - Part 2-3: Appliance couple with a degree of protection higher than IPX0 (B ni thit b dng trong gia nh v cc mc ch tng t - Phn 2-3: B ni c cp bo v cao hn IPX0)

IEC 60384-14:2005, Fixed capacitors for use in electronic equipment - Part 14: Sectional specification: Fixed capacitors for electromagnetic interference suppression and connection to the supply mains (T in khng i dng trong thit b in t - Phn 14: Qui nh k thut tng phn: T in khng i dng trit nhiu in t v ni n ngun li)

IEC 60417, Graphical symbols for use on equipment (K hiu bng hnh v s dng trn thit b)

IEC 60664-1:2007, Insulation coordination for equipment within low-voltage systems - Part 1: Principles, requirements and tests (Phi hp cch in dng cho thit b thuc h thng in h p - Phn 1: Nguyn tc, yu cu v th nghim)

IEC 60664-3:2003, Insulation coordination for equipment within low-voltage systems - Part 3: Use of coating, potting or moulding for protection against pollution (Phi hp cch in dng cho thit b thuc h thng in h p - Phn 3: S dng lp ph, lp bc hoc hn bo v khi nhim bn)

IEC 60664-4:2005, Insulation coordination for equipment within low-voltage systems - Part 4: Consideration of high-frequency voltage stress (Phi hp cch in dng cho thit b thuc h thng in h p - Phn 4: Xem xt ng sut in p tn s cao)

IEC 60691, Thermal-links - Requirements and application guide (Cu nhit - Yu cu v hng dn p dng)

IEC 60695-2-11:2000, Fire hazard testing - Part 2-11: Glowing/hot wire based test methods - Glow- wire flammability test method for end-products (Th nghim ri ro chy - Phn 2-11: Phng php th nghim bng si dy nng - Phng php th nghim kh nng chy ca sn phm cui cng bng si dy nng )

IEC 60695-2-12. Fire hazard testing - Part 2-12: Glowing/hot wire based test methods - Glow-wire flammability test method for materials (Th nghim ri ro chy - Phn 2-12: Phng php th nghim bng si dy nng - Phng php th nghim kh nng chy ca vt liu bng si dy nng )

IEC 60695-2-13, Fire hazard testing - Part 2-13: Glowing/hot wire based test methods - Glow-wire ignitability test method for materials (Th nghim ri ro chy - Phn 2-13: Phng php th nghim bng si dy nng - Phng php th nghim kh nng mi chy ca vt liu bng si dy nng )

IEC 60695-10-2, Fire hazard testing - Part 10-2: Abnormal heat - Ball pressure test (Th nghim ri ro chy - Phn 10-2: Nhit bt thng - Th nghim p vin bi)

IEC 60695-11-5:2004, Fire hazard testing - Part 11-5: Test flames - Needle-flame test method - Apparatus, confirmatory test arrangement and guidance (Th nghim ri ro chy - Phn 11-5: Ngn la th nghim - Phng php th nghim ngn la hnh kim - Thit b, b tr th nghim xc nhn v hng dn)

IEC 60695-11-10, Fire hazard testing - Part 11-10: Test flames - 50 W horizontal and vertical flame test methods (Th nghim ri ro chy - Phn 11-10: Ngn la th nghim - Phng php th nghim bng ngn la 50 W t theo phng nm ngang v theo phng thng ng)

IEC 60730-1:1999 (sa i 1:2003, sa i 2:2007), Automatic electrical controls for household and similar use - Part 1: General requirements (C cu iu khin t ng bng in dng trong gia nh v s dng tng t - Phn 1: Yu cu chung)

IEC 60730-2-8:2000 (sa i 1:2002), Automatic electrical controls for household and similar use - Part 2-8: Particular requirements for electrically operated water valves, including mechanical requirements (C cu iu khin t ng bng in dng trong gia nh v s dng tng t - Phn 2- 8: Yu cu c th i vi van nc vn hnh bng in, k c cc yu cu v c)

IEC 60730-2-10, Automatic electrical controls for household and similar use - Part 2-10: Particular requirements for motor-starting relays (C cu iu khin t ng bng in dng trong gia nh v s dng tng t - Phn 2-10: Yu cu c th i vi rle khi ng ng c)

IEC 60738-1, Thermistors - Directly heated positive temperature coefficient - Part 1: Generic specification (B iu nhit - H s nhit dng gia nhit trc tip - Phn 1: Qui nh k thut chung)

IEC 60906-1, IEC system of plugs and socket-outlets for household and similar purposes - Part 1: Plugs and socket-outlets 16 A 250 V a.c. (H thng cm v phch cm IEC dng trong gia nh v cc mc ch tng t- Phn 1: Phch cm v cm 16 A 250 V dng in xoay chiu)

IEC 60990:1999, Methods of measurement of touch-current and protective conductor current (Phng php o dng in chm v dng in chy trong dy dn bo v)

IEC 60999-1:1999, Connecting devices - Electrical copper conductors - Safety requirements for screw- type and screwless-type clamping units - Part 1: General requirements and particular requirements for clamping units for conductors from 0,2 mm2 up to 35 mm2 (included) (Thit b u ni - Rut dn in bng ng - Yu cu an ton i vi b kp loi bt ren v loi khng bt ren - Phn 1: Yu cu chung v yu cu c th i vi b kp dng kp cc rut dn c din tch mt ct t 0,2 mm2 n v bng 35 mm2)

IEC 61000-4-4. Electromagnetic compatibility (EMC) - Part 4-4: Testing and measurement techniques - Electrical fast transient/burst immunity test (Tng thch in t (EMC) - Phn 4-4: Phng php o v th - Min nhim i vi bu xung/qu in nhanh)

IEC 61000-4-13:2002 (sa i 1:2009), Electromagnetic compatibility (EMC) - Part 4-13: Testing and measurement techniques - Harmonics and interharmonics including mains signalling at a.c. power port, low frequency immunity tests (Tng thch in t (EMC) - Phn 4-13: Phng php o v th - Min nhim tn s thp i vi cc hi v hi trung gian k c tn hiu ngun li cng ngun xoay chiu)

IEC 61000-4-34:2005 (sa i 1:2009), Electromagnetic compatibility (EMC) - Part 4-34: Testing and measurement techniques - Voltage dips, short interruptions and voltage variations immunity tests for equipment with input current more than 16 A per phase (Tng tch in t (EMC) - Phn 4-34: Phng php o v th - Th nghim st p, gin on ngn v bin ng in p i vi thit b c dng in vo ln hn 16 A trn mi pha)

IEC 61032: 1997, Protection of persons and equipment by enclosures - Probes for verification (Bo v con ngi v thit b bng v ngoi - u d kim tra)

lEC 61180-1, High-voltage test techniques for tow-voltage equipment - Part 1: Definitions, test and procedure requirements (K thut th nghim in p cao dng cho thit b h p - Phn 1: nh ngha, yu cu v th nghim v qui trnh)

IEC 61180-2, High-voltage test techniques for low-voltage equipment - Part 2: Test equipment (K thut th nghim in p cao dng cho thit b h p - Phn 2: Thit b th nghim)

IEC 61558-1:2005 (sa i 1:2009), Safety of power transformers, reactors, power supply units and similar products - Part 1: General requirements and tests (An ton ca my bin p in lc, cun khng, ngun cung cp v thit b tng t - Phn 1: Yu cu v th nghim chung)

IEC 61558-2-6:2009, Safety of transformers, reactors, power supply units and similar products for supply voltage up to 1 100 V - Part 2-6: Particular requirements and tests for safety isolating transformers (An ton ca my bin p in lc, cun khng, ngun cung cp v thit b tng t dng cho in p ngun n 1 100 V - Phn 2-6: Yu cu c th v cc th nghim i vi bin p cch ly an ton v khi cung cp in c lp bin p cch ly an ton)

IEC 61770, Electric appliances connected to the water mains - Avoidance of backsiphonage and failure of hose-sets (Thit b in ni ti ngun nc - Ngn nc chy ngc v lm hng cm ng mm)

IEC 62151, Safety of equipment electrically connected to a telecommunication network (An ton ca thit b c ni in ti mng vin thng)

ISO 7000, Graphical symbols for use on equipment - Index and synopsis (K hiu ha s dng trn thit b - Ch s v tm tt)

ISO 9772:2001 (sa i 1:2003), Cellular plastics - Determination of horizontal burning characteristics of small specimens subjected to a small flame (Cht do xp - Xc nh c tnh chy theo phng ngang ca cc mu nh bng ngn la nh)

ISO 9773, Plastics - Determination of burning behaviour of thin flexible vertical specimens in contact with a small-flame ignition source (Cht do - Xc nh Kh nng chy theo phng thng ng ca cc mu mm mng khi tip xc vi ngun mi chy nh)

3. Thut ng v nh ngha

Tiu chun ny p dng cc nh ngha di y.

CH THCH 1: Bn lit k tn cc thut ng c nh ngha nm cui ca tiu chun ny.

CH THCH 2: Nu khng c qui nh no khc th thut ng "in p" v dng in" c hiu l gi tr hiu dng

3.1. nh ngha lin quan n cc c tnh vt l3.1.1. in p danh nh (rated votage)

in p do nh ch to n nh cho thit b.

3.1.2. Di in p danh nh (rated votage range)

Di din p do nh ch to n nh cho thit b, c biu th bng gii hn di v gii hn trn ca di.

3.1.3. in p lm vic (working voltage)

in p ln nht m b phn cn xem xt phi chu khi thit b c cp ngun in p danh nh ca n v lm vic bnh thng, vi cc b iu khin v thit b ng ct c t v tr sao cho gi tr ny t ln nht.

CH THCH 1: in p lm vic c tnh n cc in p cng hng.

CH THCH 2: Khi suy ra in p lm vic, khng tnh n nh hng ca in p qu .

3.1.4. Cng sut vo danh nh (rated power input)

Cng sut vo do nh ch to n nh cho thit b.

CH THCH: Nu cng sut u vo khng c n nh cho thit b th cng sut u vo danh nh i vi thit b gia nhit v thit b kt hp l cng sut u vo o c khi thit b c cp in in p danh nh v hot ng trong iu kin lm vic bnh thng.

3.1.5. Di cng sut vo danh nh (rated power input range)

Di cng sut vo do nh ch to n nh cho thit b, c biu th bng gii hn di v gii hn trn ca di.3.1.6. Dng in danh nh (rated current)

Dng in do nh ch to n nh cho thit b.

CH THCH: Nu tr s dng in khng c n nh cho thit b th dng din danh nh s l

- dng in tnh t cng sut vo danh nh v in p danh nh, i vi thit b gia nhit;

- dng in o c khi thit b hot ng trong iu kin lm vic bnh thng in p danh nh, i vi thit b truyn ng bng ng c din v thit b kt hp.

3.1.7. Tn s danh nh (rated frequency)

Tn s do nh ch to n nh cho thit b.

3.1.8. Di tn s danh nh (rated frequency range)

Di tn s do nh ch to n nh cho thit b, c biu th bi gii hn di v gii hn trn ca di.

3.1.9. Lm vic bnh thng (normal operation)

iu kin trong thit b vn hnh theo s dng bnh thng khi c ni vo ngun li.

3.1.10. in p xung danh nh (rated impulse voltage)

in p suy ra t in p danh nh v cp qu in p ca thit b, c trng cho kh nng chu qu in p qu qui nh ca cch in.3.1.11. S c nguy him (dangerous malfunction)

Hot ng khng theo d kin ca thit b c th nh hng xu n an ton.

3.1.12. Vn hnh t xa (remote operation)

iu khin thit b bng lnh khi to t bn ngoi tm ngm ca thit b bng cch s dng cc phng tin nh vin thng, b iu khin bng m thanh hoc h thng ng ni chung.

CH THCH: Bn thn b iu khin bng hng ngoi khng c coi l vn hnh t xa. Tuy nhin, n c th c kt hp nh l mt phn ca h thng v d nh h thng vin thng, h thng iu khin bng m thanh hoc h thng ng ni chung.

3.2. nh ngha lin quan n phng tin ni

3.2.1. B dy ngun (supply leads)

B dy dng ni thit b vo h thng i dy c nh v c t vo ngn bn trong thit b hoc gn vo thit b.

3.2.2. Dy dn lin kt (interconnection cord)

Dy dn mm bn ngoi c trang b nh l mt phn ca mt thit b hon chnh, khng dng ni vi ngun li.

CH THCH: C cu ng ct cm tay tc ng t xa, lin kt bn ngoi gia hai b phn ca mt thit b v dy dn ni mt kh c in n thit b hoc n mt mch bo hiu ring bit l mt s v d v dy dn lin kt.

3.2.3. Dy ngun (supply cord)

Dy dn mm gn c nh vi thit b dng cho mc ch ni n ngun in.

3.2.4. Ni dy kiu X (type X attachment)

Phng php ni dy ngun sao cho c th thay dy ngun c mt cch d dng,

CH THCH: Dy ngun c th c chun b c bit v ch c sn nh ch to hoc cc i l bo tr ca nh ch to. Dy c chun b c bit cng c th bao gm mt phn ca thit b.3.2.5. Ni dy kiu Y (type Y attachment)

Phng php ni dy ngun sao cho vic thay dy ngun phi do nh ch to, i l bo tr ca nh ch to hoc nhng ngi c trnh tng ng thc hin.

3.2.6. Ni dy kiu Z (type z attachment)

Phng php ni dy ngun sao cho khng th thay dy m khng lm hng hoc ph hy thit b.

3.3. nh ngha lin quan n bo v chng in git

3.3.1. Cch in chnh (basic insulation)

Cch in t ln b phn mang in cung cp bo v chnh chng in git.

3.3.2. Cch in ph (supplementary insulation)

Cch in c lp c t b sung vo cch in chnh bo v chng in git trong trng hp hng cch in chnh.

3.3.3. Cch in kp (double insulation)

H thng cch in gm c cch in chnh v cch in ph.

3.3.4. Cch in tng cng (reinforced insulation)

Cch in duy nht t ln b phn mang in c cp bo v chng in git tng ng vi cch in kp trong cc iu kin qui nh ca tiu chun ny.

CH THCH: Cch in ny khng nht thit l mt chi tit ng nht. Cch in c th gm nhiu lp, cc lp ny khng th th mt cch ring bit nh cch in ph hoc cch in chnh.

3.3.5. Cch in chc nng (functional insulation)

Cch in gia cc phn dn c in th khc nhau, cn thit cho hot ng ng ca thit b.

3.3.6. Tr khng bo v (protective impendance)

Tr khng ni b phn mang in vi b phn dn chm ti c ca kt cu cp II, sao cho dng in c gii hn n tr s an ton trong s dng bnh thng v trong cc iu kin s c c nhiu kh nng xy ra bn trong thit b.

3.3.7. Thit b cp 0 (class 0 appliance)

Thit b, trong vic bo v chng in git ch da vo cch in chnh, khng c phng tin ni b phn chm ti c dn in, nu c, n dy dn bo v ca h thng i dy c nh, trong trng hp hng cch in chnh, vic bo v da vo mi trng bao quanh.

CH THCH: Thit b cp 0 c v bc bng vt liu cch in c th l mt phn hay ton b cch in chnh, hoc c v bng kim loi cch ly vi cc b phn mang in nh lp cch in thch hp. Nu thit b no c v bc bng vt liu cch in li c phng tin bn trong ni t th thit b c coi l thit b cp I hoc thit b cp 01.

3.3.8. Thit b cp 01 (class 01 appliance)

Thit b t nht phi c cch in chnh v c u ni t, nhng dy ngun khng c dy ni t v phch cm in khng c cc ni t.3.3.9. Thit b cp I (class I appliance)

Thit b, trong vic bo v chng in git khng ch da vo cch in chnh m cn c thm bin php an ton bng cch ni b phn chm ti c dn in vi dy ni t bo v trong h thng i dy c nh ca h thng lp t, sao cho nu cch in chnh b hng th b phn chm ti c dn in cng khng tr nn mang in.

CH THCH: Yu cu ny bao hm c dy ni t bo v trong dy ngun.3.3.10. Thit b cp II (class II appliance)

Thit b, trong vic bo v chng in git khng ch da vo cch in chnh m cn c thm bin php an ton v d cch in kp hoc cch in tng cng, khng c u ni t bo v hoc da vo iu kin lp t.

CH THCH 1: Cc thit b nh vy c th l mt trong s cc loi sau y:

- thit b c v bc bng vt liu cch in bn v v c bn l lin tc, bao ph ton b cc b phn kim loi, ngoi tr cc b phn nh nh tm nhn, vt, inh tn c cch ly vi b phn mang in bng cch in t nht tng ng vi cch in tng cng; thit b nh vy c gi l thit b cp II c v bc cch in;

- thit b c v bc bng kim loi v c bn l lin tc, trong hon ton s dng cch in kp hoc cch in tng cng; thit b nh vy c gi l thit b cp II c v bc kim loi;

- thit b kt hp c thit b cp Il c v bc cch in v thit b cp II c v bc kim loi.

CH THCH 2: V bc ca thit b cp II c v bc cch in c th to thnh mt phn hoc ton b cch in ph hoc cch in tng cng.

CH THCH 3: Thit b no s dng hon ton cch in kp hoc cch in tng cng nhng li c u ni t th thit b c coi l thit b cp I hoc thit b cp 0I.

3.3.11. Kt cu cp II (class II construction)

B phn ca thit b, trong vic bo v chng in git da vo cch in kp hoc cch in tng cng.

3.3.12. Thit b cp III (class III appliance)

Thit b, trong vic bo v chng in git da vo ngun in c in p cc thp an ton, v khng th sinh ra in p ln hn in p cc thp an ton.

CH THCH: C th yu cu b sung cch in chnh in p cc thp an ton (SELV). Theo 8.1.4.3.3.13. Kt cu cp III (class III construction)

B phn ca thit b, trong vic bo v chng in git da vo in p cc thp an ton v trong khng th sinh ra in p ln hn in p cc thp an ton.

CH THCH 1. C th yu cu b sung cch in chnh SELV. Theo 8.1.4.

CH THCH 2: Nu b phn chnh ca thit b lm vic SELV v c ly cng vi khi ngun tho ra c th b phn chnh ca thit b ny c coi l kt cu cp III trong thit b cp I hoc thit b cp II khi thch hp.

3.3.14. Khe h khng kh (clearance)

Khong cch ngn nht trong khng kh gia hai b phn dn in hoc gia mt b phn dn in v b mt chm ti c.

3.3.15. Chiu di ng r (creepage distance)

Khong cch ngn nht dc theo b mt cch in gia hai b phn dn in hoc gia mt b phn dn in v b mt chm ti c.

3.4. nh ngha lin quan n in p cc thp

3.4.1. in p cc thp (extra-low voltage)

in p c cung cp t ngun bn trong thit b, khi thit b c cp in in p danh nh, in p ny khng ln hn 50 V gia cc dy dn v gia dy dn v t.

3.4.2. in p cc thp an ton (safety extra-low voltage)

in p khng ln hn 42 V gia cc y dn v gia dy dn v t, in p khng ti khng ln hn 50 V.

Khi in p cc thp an ton c ly t ngun li th phi ly thng qua bin p cch ly an ton hoc b chuyn i c cc cun dy ring, cch in ca chng phi ph hp vi yu cu ca cch in kp hoc cch in tng cng.

CH THCH 1: Gii hn in p qui nh trn da trn gi thit l bin p cch ly an ton c cp in in p danh nh ca n.

CH THCH 2: in p cc thp an ton gi tt l SELV.3.4.3. Bin p cch ly an ton (safety isolating transformer)

Bin p c cun dy vo cch ly v in vi cun dy ra bng lp cch in t nht l tng ng vi cch in kp hoc cch in tng cng v c thit k cung cp cho thit b hoc cho mch in mt in p cc thp an ton.

3.4.4. Mch in p cc thp bo v (protective extra-low voltage circuit)

Mch in c ni t hot ng in p cc thp an ton, mch ny cch ly vi cc mch khc bng cch in chnh v bng che chn bo v, bng cch in kp hoc cch in tng cng.

CH THCH 1: Che chn bo v l vic cch ly cc mch khi cc b phn mang in bng mn chn c ni t.

CH THCH 2: Mch in p cc thp bo v gi tt l mch PELV.

3.5. nh ngha lin quan n loi thit b

3.5.1. Thit b di ng (portable appliance)

Thit b c thit k c th di chuyn c khi ang hot ng hoc thit b khng phi l thit b lp c nh, c khi lng nh hn 18 kg.

3.5.2. Thit b cm tay (hand-held appliance)

Thit b di ng c thit k cm bng tay trong qu trnh s dng bnh thng.

3.5.3. Thit b t tnh ti (stationary appliance)

Thit b lp c nh hoc thit b khng phi l thit b di ng.3.5.4. Thit b lp c nh (fixed appliance)

Thit b c thit k s dng khi c c nh vi gi hoc c gi cht vo mt v tr qui nh.

3.5.5. Thit b lp trong (built-in appliance)

Thit b lp c nh c thit k lp t trong t, trong hc b tr trong tng hoc v tr tng t.

3.5.6. Thit b gia nhit (heating appliance)

Thit b c lp phn t gia nhit nhng khng c ng c in.

3.5.7. Thit b truyn ng bng ng c in (motor-operated appliance)

Thit b c lp ng c nhng khng c phn t gia nhit.

CH THCH: Thit b truyn ng bng nam chm c coi l thit b truyn ng bng ng c in.

3.5.8. Thit b kt hp (combined appliance)

Thit b c c phn t gia nhit v ng c in.

3.6. nh ngha lin quan n cc b phn ca thit b

3.6.1. B phn khng tho ri c (non-detachable part)

B phn ch c th tho hoc m ra khi c dng c hoc b phn tha mn th nghim 22.11.

3.6.2. B phn tho ri c (detachable part)

B phn c th tho hoc m ra m khng cn n dng c, b phn tho hoc m ra theo hng dn s dng, cho d cn c dng c tho, hoc b phn khng tha mn th nghim 22.11.

CH THCH 1: Nu v mc ch lp t, mt b phn no cn phi tho ra th b phn khng c xem l b phn tho ri c, cho d hng dn c nu rng b phn cn c tho ra.

CH THCH 2: Cc b phn hp thnh c th tho ri m khng cn n dng c c coi l b phn tho ri c.

3.6.3. B phn chm ti c (accessible part)

B phn hoc b mt c th chm ti bng u d th nghim B ca IEC 61032, v mi phn dn ni n b phn nu b phn hoc b mt ny l kim loi.

CH THCH: B phn phi kim loi chm ti c c lp ph dn in c coi l b phn kim loi chm ti c.

3.6.4. B phn mang in (live part)

Dy dn hoc b phn dn c thit k mang in trong s dng bnh thng, k c dy trung tnh, nhng theo qui c, khng phi l dy PEN.

CH THCH 1: B phn, chm ti c hoc khng chm ti c, ph hp vi 8.1.4, khng c coi l b phn mang in.

CH THCH 2: Dy PEN l dy trung tnh ni t bo v, kt hp cc chc nng ca c dy dn bo v v dy trung tnh.

3.6.5. Dng c (tool)

Tuc n vt, cha vn hoc vt dng khc c th dng vn vt hoc cc phng tin c nh tng t.

3.6.6. B phn nh (small part)

B phn c mi b mt u lt vo bn trong ng trn ng knh 15 mm, hoc b phn c mt s b mt khng lt trong ng trn ng knh 15 mm nhng khng c b mt no cha c ng trn ng knh 8 mm.

CH THCH: V d A trn Hnh 5 th hin mt b phn qu nh kp v ng thi t u si dy nng .

V d B trn Hnh 5 th hin mt b phn ln kp nhng li qu nh t u si dy nng . V d C trn Hnh 5 th hin mt b phn khng phi l b phn nh.

3.7. nh ngha lin quan n cc linh kin an ton

3.7.1. B iu nhit (thermostat)

Thit b nhy vi nhit , nhit tc ng ca n c th c nh hoc iu chnh c v trong qu trnh lm vic bnh thng th gi cho nhit ca b phn cn khng ch nm trong gii hn nht nh bng cch t ng ng v ct mch in.

3.7.2. B hn ch nhit (temperature limiter)

Thit b nhy vi nhit , nhit tc ng ca n c th t c nh hoc iu chnh c v trong qu trnh lm vic bnh thng th tc ng bng cch ngt hoc ng mch in khi nhit ca b phn cn khng ch t ti mt gi tr xc nh trc.

CH THCH: B hn ch nhit khng tc ng ngc tr li trong chu trnh lm vic bnh thng ca thit b. N c th i hi hoc khng i hi phc hi bng tay.

3.7.3. C cu ct theo nguyn l nhit (thermal cut-out)

C cu m ch lm vic khng bnh thng th hn ch nhit ca b phn cn khng ch bng cch t ng ct mch hoc gim dng in v c kt cu sao cho ngi s dng khng th thay i gi tr chnh nh.

3.7.4. C cu ct theo nguyn l nhit t phc hi (self-resetting thermal cut-out)

C cu ct theo nguyn l nhit t ng phc hi dng in sau khi b phn lin quan ca thit b ngui.

3.7.5. C cu ct theo nguyn l nhit khng t phc hi (non-self-resetting thermal cut-out)

C cu ct theo nguyn l nhit i hi phi tc ng bng tay khi phc li hoc phi thay th mt b phn mi khi phc li c dng in.

CH THCH: Tc ng bng tay bao gm c vic ngt thit b khi ngun li.

3.7.6. C cu bo v (protective device)

C cu c tc dng ngn nga tnh hung nguy him trong iu kin lm vic khng bnh thng.

3.7.7. Cu nhit (thermal link)

C cu ct theo nguyn l nhit ch tc ng mt ln v sau i hi phi thay th mt phn hoc ton b.

3.7.8. B phn yu c ch (intentionally weak part)

B phn d kin t trong iu kin lm vic khng bnh thng trnh xy ra tnh trng c th gy nh hng xu n s ph hp vi tiu chun ny.

CH THCH: B phn nh vy c th l linh kin tho ri c, vi d nh in tr hoc t in, hoc mt phn ca linh kin cn thay th, v d nh cu nhit khng th chm ti c kt hp trong ng c in.

3.8. nh ngha lin quan n vn khc

3.8.1. Ngt tt c cc cc (all-pole disconnection)

Ngt in c hai dy ngun bng mt tc ng duy nht hoc, i vi thit b ba pha, c ba dy dn ngun bng mt tc ng duy nht.

CH THCH: i vi thit b ba pha, dy trung tnh khng c coi l dy dn ngun.

3.8.2. V tr ct (off position)

V tr n nh ca thit b ng ct m ti mch in c khng ch bng thit b ng ct c ngt khi ngun cung cp ca n, i vi ngt bng in t th mch in khng mang in.

CH THCH: V tr ct khng hm vic ngt tt c cc cc.

3.8.3. Phn t gia nhit nng nhn thy c (visible glowing heating element)

Phn t gia nhit c th nhn thy c tng phn hoc ton b t pha ngoi ca thit b v c nhit t nht l 650 0C khi thit b lm vic bnh thng cng sut vo danh nh cho n khi t iu kin n nh.

3.8.4. Phn t gia nhit PTC (PTC heating element)

Phn t c thit k gia nhit, ch yu gm cc in tr c h s nhit dng, nhy vi nhit v c mc tng in tr phi tuyn nhanh khi nhit tng trong phm vi mt di nht nh.

3.8.5. Bo tr ca ngi s dng (user maintenance)

Mi hot ng bo tr nu trong hng dn s dng hoc c ghi trn thit b ngi s dng thc hin.3.9. nh ngha lin quan n mch in t

3.9.1. Linh kin in t (electronic component)

B phn trong s truyn in c thc hin ch yu bi cc in t di chuyn qua chn khng, kh hoc cht bn dn.

CH THCH: n ch th non khng c coi l linh kin in t.

3.9.2. Mch in t (electronic circuit)

Mch in c cha t nht mt linh kin in t.

3.9.3. Mch bo v bng in t (protective electronic circuit)

Mch in t ngn nga tnh hung nguy him trong iu kin lm vic khng bnh thng.

CH THCH: Cng c th s dng cc b phn ca mch ny vo mc ch chc nng.

4. Yu cu chung

Thit b phi c kt cu hot ng an ton trong s dng bnh thng m khng gy nguy him cho con ngi hoc cc vt xung quanh, ngay c khi thiu cn thn c th xy ra trong s dng bnh thng.

Nhn chung nguyn tc ny t c bng cch p ng y cc yu cu lin quan qui nh trong tiu chun ny v s ph hp c kim tra bng cch thc hin ton b cc th nghim c lin quan.

5. iu kin chung i vi cc th nghim

Nu khng c qui nh no khc, cc th nghim c tin hnh ph hp vi iu ny.

5.1. Th nghim theo tiu chun ny l th nghim in hnh.

CH THCH: Th nghim thng xuyn c m t trong Ph lc A.

5.2. Cc th nghim c tin hnh trn mt thit b v phi chu c tt c cc th nghim c lin quan. Tuy nhin, cc th nghim iu 20, t iu 22 (tr 22.10, 22.11 v 22.18) n iu 26, iu 28, iu 30 v iu 31 c th tin hnh trn cc thit b ring bit. Th nghim ca 22.3 c thc hin trn mt mu mi.

CH THCH 1: C th yu cu mu b sung, nu nh thit b cn c th nghim trong cc iu kin khc nhau, v d, trong trng hp thit b c cc in p ngun khc nhau.

Nu c mt b phn yu c ch tr nn h mch trong qu trnh th nghim theo iu 19, th cn b sung thm thit b.

Vic th nghim cc linh kin c th i hi phi np mu b sung ca cc linh kin ny.

Nu phi tin hnh cc th nghim Ph lc C th cn c su mu ng c in.

Nu phi tin hnh cc th nghim Ph lc D th c th s dng thit b b sung.

Nu phi tin hnh th nghim Ph lc G th cn c bn my bin p b sung.

Nu phi tin hnh th nghim Ph lc H th cn c ba thit b ng ct hoc ba thit b b sung.

CH THCH 2: Cn trnh ng sut tch ly ln mch in t do cc th nghim lin tip. C th cn thit phi thay th cc linh kin hoc s dng mu b sung, s lng mu b sung cn gi mc ti thiu bng cch nh gi cc mch in t lin quan.

CH THCH 3: Nu phi tho d thit b tin hnh th nghim th cn thn trng m bo lp c tr li nh ban u. Trong trng hp c nghi ng th cc th nghim tip sau c th tin hnh trn mt mu ring bit.

5.3. Cc th nghim c tin hnh theo th t ca cc iu. Tuy nhin, th nghim 22.11 trn thit b nhit phng c thc hin trc cc th nghim iu 8. Cc th nghim ca iu 14, 21.2 v 22.24 c thc hin sau cc th nghim ca iu 29. Th nghim ca 19.14 c tin hnh trc th nghim ca 19.11.

Nu cn c theo kt cu ca thit b c th thy r l khng phi thc hin mt th nghim c th no th khng tin hnh th nghim .

5.4. Khi th nghim cc thit b cng c cp ngun bi cc ngun nng lng khc, v d nh kh, th phi tnh n nh hng ca vic tiu th cc nng lng ny.5.5. Cc th nghim c tin hnh trn thit b hoc cc b phn di ng bt k ca thit b c t v tr bt li nht c th xy ra trong qu trnh s dng bnh thng.

5.6. Thit b c b khng ch hoc c cu ng ct c th nghim vi cc b khng ch hoc c cu ng ct ny c iu chnh n ch t bt li nht nu ch t ny c thit k ngi s dng c th thay i c.

CH THCH 1: Nu b khng ch c phng tin iu chnh c th tip cn c m khng cn n dng c th p dng iu ny, cho d vic t ch c th thay i bng tay hay bng dng c. Nu khng th tip cn phng tin iu chnh khi khng c dng c, v nu ngi s dng khng c php thay i ch t th khng p dng iu ny.

CH THCH 2: Nim phong mt cch cn thn c xem l bin php ngn nga ngi s dng thay i ch t.

Nu khng c qui nh no khc, i vi thit b c lp chuyn mch chn in p, th thc hin th nghim v tr chuyn mch tng ng vi gi tr in p danh nh s dng cho cc th nghim.

5.7. Cc th nghim c tin hnh ni khng c gi la, nhit mi trng 20 C 5 C.

Nu nhit ca bt k b phn no b hn ch bi c cu nhy vi nhit hoc b nh hng bi nhit m xy ra s thay i trng thi, v d khi nc si, nhit mi trng c duy tr 23 C 2 C trong trng hp c nghi ng.

5.8. iu kin th nghim lin quan n tn s v in p

5.8.1. Thit b in ch s dng in xoay chiu c th nghim vi in xoay chiu tn s danh nh, thit b in s dng c in xoay chiu ln mt chiu th th nghim ngun no bt li hn.

Thit b in xoay chiu khng ghi nhn tn s danh nh hoc ghi di tn s 50 Hz n 60 Hz th c th nghim tn s hoc 50 Hz hoc 60 Hz, chn tn s no bt li hn.

5.8.2. Thit b c nhiu in p danh nh th c th nghim trn c s in p bt li nht.

i vi thit b truyn ng bng ng c in v thit b kt hp, c ghi nhn di in p danh nh, nu c qui nh din p ngun bng in p danh nh nhn vi mt h s th thit b c cp in :

- gii hn trn ca di in p danh nh nhn vi h s nu h s ln hn 1;

- gii hn di ca di in p danh nh nhn vi h s nu h s nh hn 1.

Nu khng c qui nh h s th in p ngun l in p bt li nht trong di in p danh nh.

CH THCH 1: Nu thit b gia nhit c mt di in p danh nh th gii hn trn ca di in p thng l in p bt li nht trong di .

CH THCH 2: i vi thit b truyn ng bng ng c in, thit b kt hp v thit b c nhiu in p danh nh hoc di in p danh nh, c th phi tin hnh mt s th nghim gi tr nh nht, trung bnh v ln nht ca in p danh nh hoc di in p danh nh tm ra in p bt li nht.

5.8.3. i vi thit b gia nhit v thit b kt hp c ghi trn nhn di cng sut vo danh nh, nu c qui nh cng sut vo bng cng sut vo danh nh nhn vi mt h s th thit b hot ng :

- gii hn trn ca di cng sut vo danh nh nhn vi h s , nu h s ln hn 1;

- gii hn di ca di cng sut vo danh nh nhn vi h s , nu h s nh hn 1.

Nu khng c qui nh h s th cng sut vo l cng sut bt li nht trong di cng sut vo danh nh.

5.8.4. i vi thit b c ghi nhn mt di in p danh nh v cng sut vo danh nh tng ng vi gi tr trung bnh ca di in p danh nh, nu c qui nh rng cng sut vo bng cng sut vo danh nh nhn vi mt h s th cho thit b hot ng :

- cng sut vo tnh c ng vi gii hn trn ca di in p danh nh nhn vi h s , nu h s ny ln hn 1;

- cng sut vo tnh c ng vi gii hn di ca di in p danh nh nhn vi h s , nu h s ny nh hn 1.

Nu khng qui nh h s th cng sut vo ng vi cng sut vo in p bt li nht trong di in p danh nh.

5.9. Nu c cc phn t gia nhit hoc ph kin thay th khc c nh ch to thit b lm sn th thit b c th nghim vi cc phn t gia nhit hoc ph kin no cho kt qu bt li nht.

5.10. Cc th nghim c tin hnh trn thit b nh khi c giao. Tuy nhin, mt thit b c kt cu l mt thit b trn b nhng li giao dng mt s khi th c th nghim sau khi lp rp theo hng dn i km thit b.

Thit b lp trong v thit b lp c nh c lp t ph hp vi hng dn i km thit b trc khi th nghim.

5.11. Thit b d kin c ni n h thng i dy c nh bng dy dn mm c th nghim vi dy dn mm thch hp ni vo thit b.

5.12. i vi thit b gia nhit v thit b kt hp, nu c qui nh rng thit b phi hot ng cng sut vo nhn vi mt h s, th iu ny ch p dng i vi phn t gia nhit c h s nhit in tr dng khng ng k.

i vi cc phn t gia nhit c h s nhit in tr dng ng k, khng phi l phn t gia nhit PTC, in p ngun c xc nh bng cch cp ngun cho thit b in p danh nh cho n khi phn t gia nhit t ti nhit lm vic ca n. in p ngun sau c tng nhanh n gi tr cn thit cung cp mt cng sut vo theo yu cu ca th nghim c lin quan, gi tr in p ngun ny c duy tr trong sut qu trnh th nghim.

CH THCH: Nhn chung, h s nhit c coi l ng k nu in p danh nh, cng sut vo ca thit b trong iu kin ngui sai khc qu 25 % so vi cng sut vo nhit lm vic.

5.13. Cc th nghim i vi thit b c phn t gia nhit PTC, v cc th nghim i vi thit b gia nhit v thit b kt hp trong cc phn t gia nhit c cp in qua ngun in bng phng thc ng ct c thc hin in p tng ng vi cng sut vo qui nh.

Khi c qui nh cng sut vo ln hn cng sut vo danh nh th h s nhn in p bng cn bc hai ca h s nhn cng sut vo.

5.14. Nu thit b cp 0I hoc thit b cp I c cc b phn kim loi chm ti c nhng khng ni t v khng cch ly vi b phn mang in bng b phn kim loi trung gian c ni t th cc b phn nh vy phi c kim tra s ph hp vi cc yu cu thch hp qui nh cho kt cu cp II.

Nu thit b cp 0I hoc thit b cp I c cc b phn phi kim loi chm ti c, th cc b phn c kim tra s ph hp vi cc yu cu thch hp c qui nh i vi kt cu cp ll tr khi cc b phn ny c cch ly vi cc b phn mang in bng b phn kim loi trung gian c ni t.

CH THCH: Ph lc P a ra hng dn v cc yu cu tng cng c th c s dng m bo vic bo v chng cc nguy him v in v nhit mc chp nhn c i vi cc loi thit b c th s dng trong h thng lp t khng c dy ni t bo v cc nc c kh hu nng m khng i.

5.15. Nu thit b c cc b phn hot ng in p cc thp an ton, th cc b phn c kim tra s ph hp vi cc yu cu thch hp c qui nh i vi kt cu cp III.

5.16. Khi th nghim mch in t th ngun cung cp khng c c nhiu t cc ngun ngoi c th gy nh hng n kt qu th nghim.

5.17. Thit b chy bng pin/acqui np li c th th nghim theo Ph lc B.

5.18. Nu cc kch thc thng v kch thc gc c qui nh nhng khng c dung sai th p dng theo TCVN 7294-1 (ISO 2768-1).

5.19. Nu mt thnh phn hoc mt b phn ca thit b c c c tnh t phc hi v c tnh khng t phc hi v nu khng yu cu c tnh khng t phc hi ph hp vi tiu chun ny, th thit b c thnh phn hoc b phn phi c th nghim vi c tnh khng t phc hi c lm cho mt hiu lc.

6. Phn loi

6.1. Thit b phi thuc mt trong cc cp bo v chng in git sau y:cp 0, cp 0I, cp I, cp II, cp lIl.

Kim tra s ph hp bng cch xem xt v cc th nghim lin quan.

6.2. Thit b phi c cp bo v thch hp chng s xm nhp ca nc.

Kim tra s ph hp bng cch xem xt v cc th nghim lin quan.

CH THCH: Cp bo v chng s xm nhp ca nc c cho trong TCVN 4255 (IEC 60529).

7. Ghi nhn v hng dn

7.1. Thit b phi c ghi nhn vi cc ni dung sau:

- in p danh nh hoc di in p danh nh, tnh bng vn;

- k hiu loi ngun, tr khi c ghi tn s danh nh;

- cng sut vo danh nh, tnh bng ot, hoc dng in danh nh, tnh bng ampe;

- tn, thng hiu hoc nhn nhn bit ca nh ch to hoc i l c y quyn;

- kiu hoc kiu tham chiu;

- k hiu IEC 60417-5172 (2003-02), ch i vi thit b cp II;

- s IP theo cp bo v chng s xm nhp ca nc, nu khc vi IPX0;

- k hiu IEC 60417-5180 (2003-02), i vi thit b cp III. Ghi nhn ny l khng cn thit i vi thit b ch lm vic bng pin/acqui (pin/acqui s cp hoc pin/acqui th cp np li c bn ngoi thit b).

CH THCH 1: Ch s th nht ca m IP khng cn phi ghi trn thit b.

CH THCH 2: c php ghi thng tin b sung trn nhn min l khng gy nhm ln.

CH THCH 3: Nu cc thnh phn c ghi nhn ring bit th vic nhn ca thit b v nhn ca cc thnh phn ny phi sao cho khng gy nghi ng v nhn ca bn thn thit b.

CH THCH 4: Nu thit b c ghi nhn p sut danh nh th c th dng n v l bar nhng phi t trong du ngoc n cnh n v pascal.

V ca van nc hot ng bng in c lp vo cm ng mm bn ngoi ni thit b ti ngun nc phi c ghi nhn theo k hiu IEC 60147-5036 (2002-10) nu in p lm vic ca chng vt qu in p cc thp.

Kim tra s ph hp bng cch xem xt.

7.2. Thit b t tnh ti s dng nhiu ngun cung cp phi c ghi nhn vi ni dung sau y:CNH BO: Ngt in tt c cc mch ngun trc khi tip cn vi cc u ni.

Cnh bo ny phi t gn np ca hp u ni.

Kim tra s ph hp bng cch xem xt.

7.3. Thit b c mt di cc gi tr danh nh v c th hot ng m khng cn iu chnh trn ton di phi c ghi nhn cc gii hn di v gii hn trn ca di, cch nhau bng du gch ngang.

CH THCH 1: V d 115-230 V: Thit b thch hp vi mi gi tr trong di ghi (kp un tc c phn t gia nhit PTC hoc thit b c ngun cung cp in bng phng thc ng ct u vo).

Thit b c cc gi tr danh nh khc nhau v s dng th ngi s dng hay th lp t cn iu chnh v mt gi tr c th, phi c ghi trn nhn cc gi tr khc nhau ny, cch nhau bng mt du gch cho.

CH THCH 2: V d 115 V/230 V: Thit b ch thch hp vi cc gi tr ghi trn nhn (my co ru c chuyn mch chn in p).

CH THCH 3: Yu cu ny cng p dng cho cc thit b c trang b phng tin ni n c ngun mt pha v ngun nhiu pha.

V d: 230 V/400 V: Thit b ch thch hp vi cc gi tr in p ch ra, trong 230 V l hot ng vi in p mt pha cn 400 V l hot ng vi in p ba pha (my ra bt c cc u ni cho c hai ngun cung cp).

Kim tra s ph hp bng cch xem xt.

7.4. Nu thit b c th iu chnh c v cc in p danh nh khc nhau, th phi thy r c thit b c iu chnh v in p no. Nu thit b khng i hi phi thay i in p t mt cch thng xuyn, th yu cu ny c coi l tha mn nu in p danh nh m thit b c iu chnh c th xc nh c bng s i dy gn c nh trn thit b.

CH THCH: S i dy c th gn vo pha trong ca np y m np ny phi tho ra ni dy ngun. S ny khng c trn tm nhn gn lng lo vo thit b.

Kim tra s ph hp bng cch xem xt7.5. i vi thit b c ghi nhn nhiu in p danh nh hoc nhiu di in p danh nh th phi ghi nhn cng sut vo danh nh hoc dng in danh nh ng vi mi in p hay mi di in p . Tuy nhin, nu s chnh lch gia cc gii hn ca di in p danh nh khng vt qu 10 % gi tr trung bnh ca di th gi tr ghi nhn i vi cng sut vo danh nh hoc dng in danh nh c th tng ng vi gi tr trung bnh ca di.

Gii hn di v gii hn trn ca cng sut vo danh nh hoc dng in danh nh phi c ghi trn thit b sao cho mi tng quan gia cng sut v in p c r rng.

Kim tra s ph hp bng cch xem xt.

7.6. Kh s dng cc k hiu th phi s dng cc k hiu sau y:

[k hiu IEC 60417-5031 (2002-10)]dng in mt chiu

[k hiu IEC 60417-5032 (2002-10)]dng in xoay chiu

[k hiu IEC 60417-5032-1 (2002-10)]dng xoay chiu ba pha

[k hiu IEC 60417-5032-2 (2002-10)]dng xoay chiu ba pha c dy trung tnh

[k hiu IEC 60417-5032-2 (2002-10)]cu chy

CH THCH 1: Dng in danh nh ca cu chy c th ghi cng vi k hiu ny.

cu chy c tc ng tr c nh, trong X l k hiu ca c tnh thi gian/dng in cho trong IEC 60127

[k hiu IEC 60417-5019 (2006-10)]t bo v

[k hiu IEC 60417-5018 (2006-10)]ni t chc nng

[k hiu IEC 60417-5172 (2003-10)]thit b cp II

[k hiu IEC 60417-5012 (2002-10)]bng n

CH THCH 2: Cng sut danh nh ca bng n c th ghi cng vi k hiu ny.

[k hiu ISO 7000-0434 (2004-01)]ch

[k hiu ISO 7000-0790 (2004-01)]c s tay dnh cho ngi vn hnh

[k hiu IEC 60417-5021 (2002-10)]ng th

[k hiu IEC 60417-5036 (2002-10)]

in p nguy him

[k hiu IEC 60417-5180 (2003-02)]thit b cp III

K hiu v loi ngun in phi c t ngay sau gi tr in p danh nh.

K hiu ca thit b cp II phi c t sao cho c th thy r rng l mt phn v thng tin k thut v khng th nhm ln vi cc ghi nhn khc.

n v ca cc i lng vt l v cc k hiu ca chng phi ph hp vi h thng n v o quc t tiu chun ha.

CH THCH 3: c php s dng cc k hiu b sung min l chng khng gy nhm lnCH THCH 4: C th s dng cc k hiu qui nh trong IEC 60417 v ISO 7000.

Kim tra s ph hp bng cch xem xt.

7.7. Thit b c ni n nhiu hn hai dy dn ngun v thit b dng vi nhiu ngun phi c s u ni gn trn thit b, tr khi cch u ni ng l qu hin nhin.

Kim tra s ph hp bng cch xem xt.CH THCH 1: Cch u ni ng i vi thit b nhiu pha c coi l hin nhin nu cc u ni vi dy dn ngun c ch r bng cc mi tn ch v pha cc u ni.

CH THCH 2: C th chp nhn ghi nhn bng ch ch ra cch u ni ng.

CH THCH 3: S u ni c th l s i dy cp 7.4.

7.8. Tr ni dy kiu Z, cc u ni dng ni vi ngun li phi c ch ra nh sau:

- cc u ni ch dng ni vi dy trung tnh phi c ghi ch N;

- cc u ni t bo v phi c th hin bng k hiu IEC 60417-5019 (2006-08).Cc ch dn ny khng c ghi trn vt, vng m tho ra c hoc cc b phn khc c th c tho ra khi u ni dy dn.

Kim tra s ph hp bng cch xem xt.

7.9. Tr khi hin nhin l khng cn thit, cc thit b ng ct khi thao tc c th gy nguy him phi c ghi nhn hoc b tr ch ra mt cch r rng n khng ch b phn no ca thit b. Cc ch dn dng cho mc ch ny, trong phm vi p dng c phi hiu c m khng cn n cc kin thc v ngn ng hay cc tiu chun quc gia.

Kim tra s ph hp bng cch xem xt.

7.10. Cc v tr khc nhau ca thit b ng ct trn thit b t tnh ti v cc v tr khc nhau ca c cu khng ch trn ton b thit b phi c ch ra bng con s, ch vit hoc cc phng tin khc nhn thy c. Yu cu ny cng p dng i vi thit b ng ct l mt b phn ca c cu khng ch.

Nu dng s th hin cc v tr khc nhau th v tr ct phi th hin bng s 0 cn con s ln hn th hin cc v tr tng ng vi gi tr ln hn, v d nh cng sut ra, cng sut vo, tc , hiu sut lm mt.

S 0 khng c s dng cho cc ch th khc, tr khi n c t v kt hp vi cc con s khc khng gy ra nhm ln vi s th hin ca v tr ct.

CH THCH 2: V d, s 0 c th c s dng trn bn phm lp trnh k thut s.

Kim tra s ph hp bng cch xem xt.

7.11. C cu Khng ch c th iu chnh trong qu trnh lp t hoc trong s dng bnh thng phi c hng dn v hng iu chnh.

CH THCH: Ch dn bng du + v du - l .

Kim tra s ph hp bng cch xem xt.

7.12. Hng dn s dng phi c cung cp cng thit b vic s dng thit b c an ton.

CH THCH: Hng dn s dng c th ghi trn nhn ca thit b vi iu kin l c th nhn thy nhn ny trong s dng bnh thng.

Nu cn thc hin bin php phng nga trong qu trnh bo tr ca ngi s dng th phi nu cc ni dung thch hp.

Hng dn phi nu ni dung sau:

Thit b ny khng thch hp cho nhng ngi (k c tr em) c nng lc v c th, gic quan hoc tinh thn suy gim hoc thiu kinh nghim v hiu bit tr khi c gim st hoc hng dn s dng thit b bi ngi c trch nhim v s an ton ca h.

Tr em cn c gim st m bo khng nghch thit b.

i vi thit b c b phn c kt cu cp III c cp in t khi ngun tho ra c, hng dn phi nu r thit b ch c s dng vi khi ngun c trang b km theo thit b ny.

i vi thit b cp III hng dn phi nu r thit b ch c cp in in p cc thp an ton theo ghi nhn trn thit b. Hng dn ny l khng cn thit i vi thit b hot ng bng pin/acqui nu pin/acqui l pin/acqui s cp hoc th cp c np in bn ngoi thit b.

Kim tra s ph hp bng cch xem xt.

7.12.1. Nu cn phi thc hin cc bin php phng nga trong qu trnh lp t thit b, th phi cung cp y cc thng tin thch hp.

Nu thit b c thit k ni c nh vi ngun nc v khng c ni bng cm ng mm th hng dn phi nu r nh vy.

Kim tra s ph hp bng cch xem xt.

7.12.2. Nu thit b t tnh ti khng lp dy ngun v phch cm, hoc khng lp phng tin khc cch ly khi ngun li c phn cch tip im tt c cc cc cung cp cch ly hon ton trong iu kin qu in p cp III, th hng dn phi ghi r l cc phng tin ngt phi c lp vo h thng i dy c nh theo qui tc i dy.

Kim tra s ph hp bng cch xem xt.

7.12.3. Nu cch in ca h thng i y c nh cp in cho mt thit b c thit k ni c nh vo ngun li c th tr nn tip xc vi cc b phn c tng nhit vt qu 50 C trong qu trnh th nghim theo iu 11 th hng dn phi ghi r l cch in ca h thng i dy c nh phi c bo v, v d bng ng lt cch in c cc thng s c trng nhit thch hp.

Kim tra s ph hp bng cch xem xt v trong qu trnh th nghim theo iu 11.

7.12.4. Hng dn i vi thit b lp trong phi c cc thng tin v cc kha cnh sau y:

- cc kch thc v khng gian cn thit cho thit b;

- cc kch thc v v tr ca phng tin dng v c nh thit b trong khng gian ;

- khong cch ti thiu gia cc b phn khc nhau ca thit b v kt cu bao quanh;

- kch thc ti thiu ca cc l thng gi v cch b tr ng ca chng;

- u ni thit b n ngun li v ni lin kt gia cc thnh phn ring r;

- cc trang b cn thit ngt thit b khi ngun li sau khi lp t, tr khi thit b c thit b ng ct ph hp 24.3. C th thc hin vic ngt bng phch cm c th tip cn c hoc bng cch lp thit b ng ct vo h thng i dy c nh theo qui tc i dy.

Kim tra s ph hp bng cch xem xt.

7.12.5. i vi thit b ni dy kiu X c dy ni c chun b c bit, hng dn phi c ni dung sau:

Nu dy ngun b hng th phi thay th bng dy hoc cm dy ring lp sn ca nh ch to hoc ca i l bo tr ca nh ch to.

i vi thit b ni dy kiu Y, hng dn phi c ni dung sau:

Nu dy ngun b hng th phi do nh ch to hoc i l bo tr ca nh ch to hoc nhng ngi c trnh tng ng thay th nhm trnh ri ro.

i vi thit b ni dy kiu Z, hng dn phi c ni dung sau:

Dy ngun khng th thay th c. Nu dy dn ngun b hng th nn vt b thit b.

Kim tra s ph hp bng cch xem xt.

7.12.6. Nu yu cu phi c c cu ct theo nguyn l nhit khng t phc hi ph hp vi tiu chun ny th i vi thit b c lp c cu ct theo nguyn l nhit khng t phc hi loi phc hi bng cch ngt ngun, hng dn phi c ni dung sau:

CH : trnh nguy him do phc hi khng ch ca c cu ct nhit, khng c cp in cho thit b qua c cu ng ct t bn ngoi, v d nh b hn gi, hoc khng c ni n mch in thng xuyn c ng v ct bi nhiu ngi s dng.

Kim tra s ph hp bng cch xem xt.

7.12.7. i vi thit b lp c nh hng dn phi ch ra cch lp c nh thit b vo gi ca n. Phng php c nh nu khng da vo vic s dng keo dnh v keo khng c coi l phng tin c nh mt cch tin cy.

Kim tra s ph hp bng cch xem xt.

7.12.8. Hng dn i vi cc thit b c ni ti ngun nc phi nu r

- p lc nc a vo ti a, tnh bng pascal;

- p lc nc a vo ti thiu, tnh bng pascal, nu iu ny l cn thit i vi vic vn hnh thit b mt cch chnh xc.

i vi thit b c ni ti ngun nc bng cm ng mm tho ra c hng dn phi nu r s dng cm ng mm mi i km thit b v khng nn s dng li cm ng mm c.Kim tra s ph hp bng cch xem xt.

7.13. Hng dn v cc ni dung khc m tiu chun ny qui nh phi c vit bng ngn ng chnh thc ca quc gia mua thit b.

Kim tra s ph hp bng cch xem xt.

7.14. Nhn theo yu cu ca tiu chun ny phi r rng v bn.

Kim tra s ph hp bng cch xem xt v bng cch ch xt bng tay trong 15 s bng gi thm m nc v sau trong 15 s na bng gi thm m xng nh. Xng nh dng cho th nghim l loi dung mi hexan mch thng.

Sau tt c cc th nghim ca tiu chun ny, nhn vn phi r rng. Khng th d dng bc c tm nhn v nhn khng c biu hin b qun.

CH THCH: Khi xem xt bn ca nhn, cn tnh n nh hng ca qu trnh s dng bnh thng. V d, ghi nhn bng sn hoc men, khng thuc loi men cng, trn cc dng c cha c nhiu kh nng phi lm sch thng xuyn th khng c coi l m bo bn.

7.15. Ni dung nhn theo qui nh t 7.1 n 7.5 phi ghi trn b phn chnh ca thit b.

Ni dung ghi nhn trn thit b phi c th thy r c t pha ngoi thit b, hoc, nu cn thit, sau khi tho np y ra. i vi thit b di ng, phi c th tho hoc m np ny ra m khng cn dng n dng c.

i vi thit b t tnh ti, khi thit b c lp t nh s dng bnh thng, t nht phi nhn thy tn hoc thng hiu hay nhn nhn bit ca nh ch to hoc i l y quyn v kiu hoc kiu tham chiu. Cc nhn ny c th nm bn di np y tho ra c. Cc nhn khc ch c th nm di np y nu chng gn cc u ni. i vi thit b lp c nh, p dng yu cu ny sau khi lp t theo hng dn i km thit b.

Cc ch dn i vi thit b ng ct v cc b khng ch phi c t trn hoc gn cc linh kin ny. Khng c t ch dn trn cc b phn m khi nh v hoc nh v li, c th lm cho nhn b hiu sai.

Kim tra s ph hp bng cch xem xt.

7.16. Nu s ph hp vi tiu chun ny ph thuc vo s tc ng ca cu nhit hoc cu chy thay th c th thng s tham chiu hoc cc thng tin khc nhn bit cu nhit hoc cu chy phi c ghi nhn mt ni no sao cho nhn thy c mt cch r rng khi thit b c tho ra ti mc cn thit thay th cu nhit hoc cu chy ny.CH THCH: c php ghi nhn trn dy chy vi iu kin l phi c c nhn sau khi cu nhit hoc cu chy tc ng.

Yu cu ny khng p dng cho cc cu nhit hoc cu chy m ch c th thay th cng vi mt b phn ca thit b.

Kim tra s ph hp bng cch xem xt.

8. Bo v chng chm vo cc b phn mang in

8.1. Thit b phi c kt cu v che chn bo v mt cch chc chn chng chm ngu nhin vo cc b phn mang in.

Kim tra s ph hp bng cch xem xt v bng cc th nghim t 8.1.1 n 8.1.3, khi p dng c, c tnh n 8.1.4 v 8.1.5.

8.1.1. Yu cu 8.1 p dng cho tt c cc t th ca thit b khi thit b hot ng nh trong s dng bnh thng v sau khi tho cc b phn c th tho ri.

CH THCH: iu ny loi tr vic s dng cc cu chy xoy ren v ptmt loi nh kiu xoy ren, c th tip cn c m khng cn n dng c.

Khng tho cc bng n nm pha sau np y tho ri c, min l thit b c th c cch ly vi ngun li nh phch cm hoc thit b ng ct tt c cc cc. Tuy nhin, khi lp hoc tho bng n nm pha sau mt np y c th tho ri, phi m bo chng chm vo cc b phn mang in ca u n.

u th nghim B ca IEC 61032 c t vi lc n khng qu 1 N, thit b c t mi t th c th, ring cc thit b trong s dng bnh thng t trn sn v c khi lng ln hn 40 kg th khng c t nghing. Qua cc l, u d c t vo mi su c th ri xoay hoc gp li trc, trong v sau khi t vo bt k v tr no. Nu cc l khng cho php u d lt qua, th lc n ln u d v tr thng c tng n 20 N. Nu sau u d lt qua l th lp li th nghim vi u d v tr gp li.

u d khng c chm ti b phn mang in hoc b phn mang in ch c bo v bng sn, men, giy thng thng, vi bng, mng xt, ht cm hoc hp cht gn tr cc loi nha t cng.

8.1.2. u d th nghim 13 ca IEC 61032 c t vi lc n khng qu 1 N qua cc l h trong cc thit b cp 0, thit b cp lI v kt cu cp II, tr cc l qua tip cn u n v cc b phn mang in cm.

CH THCH: cm-phch cm in gn trn thit b khng c coi l cm

u d th nghim cng c t qua cc l trn v bc kim loi c ni t c ph vt liu khng dn in nh sn hoc men.

u d th nghim khng c chm ti cc b phn mang in.8.1.3. i vi thit b khng phi l thit b cp II, thay cho u d th nghim B v u d th nghim 13, u th nghim 41 ca IEC 61032 c t vi lc n khng qu 1 N n cc b phn mang in ca cc phn t gia nhit nng nhn thy c, tt c cc cc ca phn t c th c ngt mch nh mt thao tc ngt mch duy nht. u d cng c t n cc b phn cc phn t ny, vi iu kin l t pha ngoi thit b m khng cn tho cc np hoc cc b phn tng t c th thy r l cc b phn ny tip xc vi phn t nng .

u d khng c chm ti cc b phn mang in .

CH THCH: i vi thit b c dy ngun v khng c c cu ng ct trong mch ngun ca thit b, vic rt phch cm ra khi cm c coi l mt thao tc ngt mch duy nht.

8.1.4. Mt b phn chm ti c khng c xem l mang in nu:

- b phn ny c cp in in p cc thp an ton vi iu kin l:

i vi in xoay chiu, gi tr nh ca in p khng ln hn 42,4 V;

i vi in mt chiu, in p khng ln hn 42,4 V;

hoc

- b phn ny c cch ly vi b phn mang in bng tr khng bo v.

Trong trng hp s dng tr khng bo v, dng in gia b phn ny v ngun in khng c ln hn 2 mA i vi in mt chiu, gi tr nh ca dng in khng ln hn 0,7 mA i vi in xoay chiu, v - i vi in p c gi tr nh ln hn 42,4 V n v bng 450 V, in dung khng c ln hn 0,1 (F;

- i vi in p c gi tr nh ln hn 450 V n v bng 15 kV, in tch phng in khng c ln hn 45 (C;

- i vi in p c gi tr nh ln hn 15 kV, nng lng khi phng in khng c vt qu 350 mJ.

Kim tra s ph hp bng cch o khi thit b c cp in in p danh nh.

in p v dng in c o gia cc b phn c lin quan v tng cc ca ngun cung cp. in tch phng in c o ngay sau khi ngt ngun in. i lng in v nng lng khi phng in o c bng cch s dng in tr thun c gi tr danh ngha l 2 000 (.CH THCH 1: Chi tit v mch in thch hp o dng in c cho trn Hnh 4 ca IEC 60990.

CH THCH 2: i lng in c tnh t tng ca tt cc vng c ghi li trn th in p/thi gian nhng khng tnh n cc tnh ca in p.

8.1.5. B phn mang in ca thit b lp trong, thit b lp c nh v thit b c giao thnh cc cm ring bit phi c bo v t nht bng cch in chnh trc khi lp t hoc lp rp.

Kim tra s ph hp bng cch xem xt v bng th nghim ca 8.1.1.

8.2. Thit b cp II v kt cu cp II phi c kt cu v che chn m bo chng chm ngu nhin bng cch in chnh v cc b phn kim loi c cch ly vi cc b phn mang in ch bng cch in chnh.

Ch c th chm ti c cc b phn cch ly vi b phn mang in bng cch in kp hoc cch in tng cng.Kim tra s ph hp bng cch xem xt v bng cch n u d th nghim B ca IEC 61032, theo cc iu kin qui nh trong 8.1.1.

p dng u d th nghim B ca IEC 61032 cho thit b lp trong v thit b lp c nh ch sau khi lp t.

9. Khi ng cc thit b truyn ng bng ng c in

CH THCH: Cc yu cu v th nghim c qui nh cc Phn 2 ca b TCVN 5699 (IEC 60335) khi cn thit.

10. Cng sut vo v dng in

10.1. Nu thit b c ghi nhn cng sut vo danh nh th cng sut vo nhit lm vic bnh thng khng c sai lch so vi cng sut vo danh nh qu mc sai lch cho trong Bng 1.

Bng 1 - Sai lch cng sut vo

Kiu thit bCng sut vo danh nhWSai lch

Tt c cc thit b 25+ 20 %

Thit b gia nhit v thit b kt hp> 25 v 20010 %

> 200+5 % hoc 20 W

(chn gi tr ln hn)-10 %

Thit b truyn ng bng ng c in> 25 v 300+20%

> 300+15 % hoc 60 W

(chn gi tr ln hn)

Sai lch i vi thit b truyn ng bng ng c in p dng cho cc thit b kt hp nu cng sut vo ca ng c in tn hn 50 % cng sut vo danh nh. i vi thit b c ghi nhn mt di in p danh nh, di ny c gii hn chnh lch ln hn 10 % gi tr trung bnh s hc ca di, sai lch cho php p dng cho c hai gii hn ca di.

CH THCH 1: Trong trng hp c nghi ng th c th o ring cng sut vo ca ng c.

Kim tra s ph hp bng cch o cng sut vo khi n nh i vi:

- tt c cc mch c th hot ng ng thi th cho hot ng ng thi;

- thit b c cp in in p danh nh;

- thit b hot ng trong ch lm vic bnh thng.

Nu cng sut vo thay i theo chu k lm vic th cng sut vo c xc nh theo gi tr trung bnh s hc ca cng sut vo trong mt chu k i din.

i vi thit b c ghi trn nhn mt hoc nhiu di in p danh nh, th nghim c tin hnh c gii hn trn v gii hn di ca cc di in p, tr khi ghi nhn cng sut vo danh nh ng vi gi tr trung bnh ca di in p lin quan, trong trng hp ny th nghim c tin hnh in p bng gi tr trung bnh s hc ca di .

10.2. Nu thit b c ghi trn nhn dng in danh nh th dng in iu kin nhit lm vic bnh thng khng c sai lch so vi dng in danh nh qu mc sai lch cho trong Bng 2.

Bng 2 - Sai lch dng in

Kiu thit bDng in danh nhASai lch

Tt c cc thit b 0,2+20 %

Thit b gia nhit v thit b kt hp>0,2 v 1,0+10%

>1,0+5% hoc 0,10 A(chn gi tr ln hn)-10 %

Thit b truyn ng bng ng c in>0,2 v 1,5+20 %

>1,5+ 15% hoc 0,30 A (chn gi tr ln hn)

Sai lch i vi thit b truyn ng bng ng c in p dng cho cc thit b kt hp nu dng in ca ng c in ln hn 50 % dng in danh nh. i vi thit b c ghi nhn mt di in p danh nh, di ny c gii hn chnh lch ln hn 10 % gi tr trung bnh s hc ca di, sai lch cho php p dng cho c hai gii hn ca di.

CH THCH: Trong trng hp c nghi ng, dng in ca ng c c th c o ring bit.

Kim tra s ph hp bng cch o khi dng in c thit lp vi:

- tt c cc mch c th hot ng ng thi th cho hot ng ng thi;

- thit b c cp in in p danh nh:

- thit b hot ng trong ch lm vic bnh thng,

Nu dng in thay i theo chu k lm vic th dng in c xc nh theo gi tr trung bnh s hc ca dng in trong mt chu k i din.

i vi thit b c ghi trn nhn mt hoc nhiu di in p danh nh, tin hnh th nghim c gii hn trn v gii hn di ca di in p i vi thit b c ghi trn nhn mt hoc nhiu di in p danh nh, tr khi c ghi nhn dng in danh nh ng vi gi tr trung bnh ca di in p lin quan, trong trng hp th nghim c tin hnh in p bng vi gi tr trung bnh s hc ca di .

11. Pht nng

11.1. Thit b v cc vt xung quanh chng khng c t ti nhit qu mc trong s dng bnh thng.

Kim tra s ph hp bng cch xc nh tng nhit ca cc b phn khc nhau theo iu kin qui nh trong cc iu t 11.2 n 11.7.

11.2. Thit b cm tay c gi v tr s dng bnh thng.

Thit b c cc chn cm vo cm th c cm vo cm thch hp lp trn tng.

Thit b lp trong c lp t theo hng dn.

Thit b gia nhit khc v thit b kt hp khc c t gc th nghim nh sau:

- thit b m bnh thng t trn sn nh hay trn bn khi s dng th c t trn sn cng gn tng cng tt;

- thit b m bnh thng c c nh trn tng th c c nh trn mt trong hai bc tng, gn bc tng kia v, gn sn nh hoc trn nh mc c th xy ra trong s dng bnh thng, c ch n hng dn lp t:

- thit b bnh thng c nh ln trn nh th c c nh trn trn nh, gn cc bc tng mc c th, c ch n hng dn lp t.

Thit b truyn ng bng ng c in khc c b tr nh sau:

- thit b bnh thng t trn sn nh hay trn bn s dng th c t trn gi nm ngang;

- thit b bnh thng c c nh vo tng th c c nh trn gi thng ng;

- thit b bnh thng c c nh trn trn nh th c c nh pha di mt gi nm ngang.

Tm g dn sn en m c chiu dy khong 20 mm c s dng cho gc th nghim, gi v cho vic lp t cc thit b lp trong.

i vi thit b c tang qun dy ngun t ng th li mt phn ba tng chiu di ca dy ngun khng qun vo. tng nhit ca v bc dy ngun c xc nh cng gn vi trc ca tang qun dy cng tt v gia hai lp ngoi cng ca dy ngun trn tang qun dy.

i vi loi dng c qun dy khc vi loi qun t ng dng cha mt phn dy ngun trong khi thit b hot ng, th phn li khng c qun vo l 50 cm. tng nhit ca phn dy qun bn trong c xc nh v tr bt li nht.

11.3. tng nhit, ngoi tr tng nhit ca cun dy, c xc nh bng nhit ngu kiu si dy mnh c b tr sao cho t gy nh hng nht n nhit ca b phn cn th nghim.

CH THCH 1: Nhit ngu kiu si dy c ng knh khng ln hon 0,3 mm c coi l nhit ngu kiu si dy mnh.

Nhit ngu dng xc nh tng nhit ca b mt tng, trn v sn ca gc th nghim c gn vo pha sau cc ming nh hnh trn bng ng hoc ng thau sn en, ng knh 15 mm v dy 1 mm. Mt trc ca ming ny c b tr bng mt vi b mt ca tm g dn. chng mc c th, thit b c b tr nhit ngu o c nhit cao nht.

tng nhit ca cch in, khng phi l cch in ca cun dy, c xc nh trn b mt ca cch in, cc v tr m vic hng cch in c th gy ra

- ngn mch;

- tip xc gia cc b phn mang in v phn kim loi chm ti c;

- ni tt qua cch in;

- lm gim chiu di ng r hoc khe h khng kh xung di mc qui nh iu 29.

CH THCH 2: Nu cn phi tho thit b t nhit ngu th phi lu m bo rng thit b c lp rp li ng. Trong trng hp c nghi ng, phi o li cng sut vo.

CH THCH 3: im tch ca cc rut ca dy dn nhiu rut v im m dy c cch in chui vo ui n l cc v d v cc v tr t nhit ngu.

tng nhit ca cc cun dy c xc nh bng phng php in tr, tr trng hp cc cun dy l khng ng nht hoc c kh khn trong vic thc hin cc mi ni, trong trng hp ny phi dng phng php nhit ngu. Ti thi im bt u th nghim, cc cun dy phi nhit phng.

tng nhit ca cun dy c tnh theo cng thc:

trong :

(t l tng nhit ca cun dy;

R1 l in tr khi bt u th nghim;

R2 l in tr khi kt thc th nghim;k bng

225 i vi cun dy bng nhm v cun dy bng ng/nhm vi hm lng nhm ( 85 %,

229,75 i vi cun dy bng ng/nhm vi hm lng ng >15 % n 150 V v 250 V b> 250 V

Cch in chnh5001 0001 0001,2 U + 700

Cch in ph1 2501 7501,2 U + 1 450

Cch in tng cng2 5003 0002,4 U + 2 400

a i vi thit b nhiu pha, ly in p pha - trung tnh hoc in p pha - t lm in p danh nh. in p th nghim i vi thit b nhiu pha 480 V l in p qui nh cho in p danh nh trong di > 150 V v 250 V.

b i vi thit b c in p danh nh 150 V, p dng in p th nghim ny cho cc b phn c in p lm vic > 150 V 250 V.

Khng c xut hin phng in nh thng trong qu trnh th nghim.

CH THCH 2: Phng in m nhng khng lm st p th c b qua.

Bng 5 - Cc c tnh ca ngun in cao p

in p th nghim

VDng in nh nht

mA

lslr

4 000200100

> 4 000 v 10 0008040

> 10 000 v 20 0004020

CH THCH: Cc dng in c tnh trn c s ca cng sut ngn mch v cng sut ct tng ng l 800 VA v 400 VA ti gi tr trn cng ca di in p.

14. Qu in p qu

Thit b phi chu c qu in p qu m thit b c th phi chu.

Kim tra s ph hp bng cch cho tng khe h khng kh c kch thc nh hn kch thc qui nh trong Bng 16 chu th nghim in p xung.

in p th nghim xung c dng sng khng ti tng ng vi xung tiu chun 1,2/50 (s qui nh trong IEC 61180-1. Cc xung c pht t my pht xung c tr khng u ra qui c khng vt qu 42 (. in p th nghim xung c t ba ln ln tng cc tnh trong thi gian t nht l 1 s.

CH THCH 1: My pht xung c qui nh trong IEC 61180-2.

in p th nghim xung qui nh trong Bng 6 dng cho in p xung danh nh cho trong Bng 15.

Bng 6 - in p th nghim xung

in p xung danh nhin p th nghim xung

VV

330357

500540

800930

1 5001 750

2 5002 920

4 0004 920

6 0007 380

8 0009 840

10 00012 300

Khng c xut hin phng in b mt. Tuy nhin, cho php c phng in b mt ca cch in chc nng nu thit b ph hp vi iu 19 khi khe h khng kh c ni tt.

CH THCH 2: in p th nghim xung c tnh bng cch s dng cc h s hiu chnh dng th nghim cao ngang vi mc nc bin. Cc in p ny c coi l thch hp cao bt k trong phm vi 500 m so vi mc nc bin. Nu cc th nghim c tin hnh cc v tr khc, th cn phi s dng cc h s hiu chnh nu trong ch thch 6.1.2.2.1.3 ca IEC 60664-1.

15. Kh nng chng m

15.1. V bc ca thit b phi c mc bo v chng m tng ng vi phn loi ca thit b.

Kim tra s ph hp nh qui nh trong 15.1.1, ch n 15.1.2, khng ni thit b vo ngun li.

Thit b phi chu c th nghim bn in qui nh trong 16.3 sau v bc bn ngoi cn c lau cn thn loi b cc git nc cn ng li v kim tra phi cho thy khng c vt nc trn cch in dn n gim khe h khng kh hoc chiu di ng r xung thp hn cc gi tr qui nh trong iu 29.

CH THCH: Phi thn trng khi tho d v bc trnh nc ri vo bn trong thit b.

15.1.1. Thit b khng thuc loi IPX0 phi chu cc th nghim ca TCVN 4255 (IEC 60529) nh sau:

- i vi thit b IPX1, th nghim nh m t trong 14.2.1;

- i vi thit b IPX2, th nghim nh m t trong 14.2.2;

- i vi thit b IPX3, th nghim nh m t trong 14.2.3a;

- i vi thit b IPX4, th nghim nh m t trong 14.2.4.a;

- i vi thit b IPX5, th nghim nh m t trong 14.2.5;

- i vi thit b IPX6, th nghim nh m t trong 14.2.6;

- i vi thit b IPX7, th nghim nh m t trong 14.2.7. i vi th nghim ny, thit b c ngm trong nc cha xp x 1 % NaCI.

CH THCH: C th dng vi phun loi cm tay th nghim cc thit b khng th t bn di ng dao ng qui nh trong TCVN 4255 (lEC 60529).

Van nc c b phn mang in v c lp vo cc ng mm bn ngoi dng ni thit b ti ngun nc chnh phi chu th nghim qui nh i vi thit b IPX7.

15.1.2. Thit b cm tay c xoay lin tc qua cc v tr bt li nht trong qu trnh th nghim.

Thit b lp trong c lp ph hp vi hng dn ca nh ch to.Thit b bnh thng t trn sn hoc trn bn th c t trn gi nm ngang khng c l, c ng knh gp hai ln bn knh ng dao ng tr i 15 cm.

Thit b bnh thng c c nh vo tng v thit b c chn cm vo cm c lp t nh s dng bnh thng vo tm ca tm g c kch thc ln hn hnh chiu vung gc ca thit b ln tm g l 15 cm 5 cm. Tm g c t tm ca ng dao ng.

i vi thit b IPX3, ca thit b lp t trn tng c t cng cao vi trc xoay ca ng dao ng.

i vi thit b IPX4, ng tm nm ngang ca thit b c t thng hng vi trc xoay ca ng dao ng. Tuy nhin, i vi thit b bnh thng s dng trn sn hoc trn bn, th dch chuyn hai ln vi gc 90 khi v tri thng ng vi thi gian l 5 min, gi c t cng cao vi trc xoay ca ng dao ng.

Nu hng dn i vi thit b lp trn tng qui nh cn t thit b st vi mt sn v qui nh mt khong cch th t mt tm g cch mt khong bn di thit b. Cc kch thc tm g ln hn hnh chiu bng ca thit b 15 cm.

Thit b bnh thng c c nh trn trn c lp di gi nm ngang khng c l c dng ngn nc bn ln b mt trn cng ca thit b. Trc xoay ca ng dao ng c t cng cao vi mt bn di ca gi v t thng hng chnh gia vi thit b. Vi phun c iu chnh hng ln. i vi thit b IPX4, dch chuyn ng dao ng hai ln vi gc 90 khi v tr thng ng vi thi gian l 5 min.

Thit b c ni dy kiu X, tr loi c dy cn chun b c bit, c lp vi loi dy mm nh nht cho php c din tch mt ct nh nht qui nh trong Bng 13.

Cc b phn tho ri c th phi tho ra v nu cn, phi qua bc x l lin quan cng vi phn chnh. Tuy nhin, khng phi tho cc b phn m hng dn qui nh l do ngi s dng bo tr v cn phi c dng c tho.

15.2. Thit b trong s dng bnh thng c th b cht lng trn ln trn th phi c kt cu sao cho cht lng trn khng nh hng n cch in ca thit b.

Kim tra s ph hp bng th nghim sau.

Thit b c ni dy kiu X, tr loi dy cn chun b c bit, c lp vi loi dy mm nh nht cho php c din tch mt ct nh nht qui nh trong Bng 13.

Thit b c cm in u vo th c th nghim c hoc khng c b ni ph hp cm vo , chn trng hp bt li nht.

Cc b phn tho ri c th phi tho ra.

Bnh cha cht lng ca thit b c y nc cha khong 1 % NaCI v sau u u thm mt lng bng 15 % th tch bnh hoc 0,25 I, chn gi tr ln hn, trong thi gian 1 min.Sau , thit b phi chu c th nghim bn in 16.3 v kim tra phi cho thy khng c vt nc no trn cch in c th dn n gim chiu di ng r hoc khe h khng kh xung thp hn gi tr qui nh trong iu 29.

15.3. Thit b phi chu c iu kin m c th xut hin trong s dng bnh thng.

Kim tra s ph hp bng th nghim Cab: Nng m khng i nu trong TCVN 7699-2-78 (IEC 60068-2-78) trong cc iu kin di y.

Thit b phi chu cc th nghim 15.1 hoc 15.2, c t trong iu kin mi trng bnh thng trong 24 h.

Li cp vo, nu c, th h. Nu c vch t th t thng mt trong cc vch t . Cc b phn tho ri c th phi tho ra v nu cn, phi chu th nghim m cng vi phn chnh.

Th nghim m c thc hin trong 48 h trong t m, cha khng kh c m tng i (93 3) %. Nhit khng kh c duy tr trong phm vi 2 C xung quanh gi tr t thch hp bt k gia 20 C v 30 C. Trc khi t vo trong t m, thit b c a v nhit t C.

CH THCH; Nu khng th t ton b thit b vo t m, th cc b phn c cch in c th nghim ring, c tnh n cc iu kin m cch in phi chu trong thit b.

Sau thit b phi chu c cc th nghim ca iu 16 trong t m hoc trong phng thit b c a v nhit qui nh trn sau khi lp li cc b phn m trc tho ra.

16. Dng in r v bn in

16.1. Dng in r ca thit b khng c qu mc v bn in phi .

Kim tra s ph hp bng cc th nghim 16.2 v 16.3.

Tr khng bo v c tho khi b phn mang in trc khi tin hnh th nghim.

Th nghim c thc hin trn thit b nhit phng v khng ni vo ngun li.

16.2. in p th nghim xoay chiu c t gia cc b phn mang in v b phn kim loi chm ti c ni ti l kim loi c kch thc khng vt qu 20 cm x 10 cm tip xc vi cc b mt chm ti c ca vt liu cch in.

in p th nghim bng:

- 1,06 ln in p danh nh i vi thit b mt pha;

- 1,06 ln in p danh nh chia cho , i vi thit b ba pha.

o dng in r trong phm vi 5 s sau khi t in p th nghim.Dng in r khng c vt qu cc gi tr sau:

- i vi thit b cp II0,24 mA

- i vi thit b cp 0, thit b cp 0I v thit b cp III:0,5 mA

- i vi thit b cp I di ng0,75 mA

- i vi thit b cp I t tnh ti truyn ng bng ng c3,5 mA

- i vi thit b cp I gia nhit t tnh ti0,75 mA hoc 0,75 mA cho mi kW cng sut vo danh nh ca thit b nhng ti a l 5 mA. chn gi tr no ln hn.

Gi tr qui nh trn c nhn i nu tt c cc b khng ch u c v tr ct tt c cc cc. Chng cng c nhn i nu:

- thit b khng c b khng ch no ngoi c cu ct theo nguyn l nhit, hoc

- tt c cc b iu nhit, b hn ch nhit v cc b iu chnh nng lng u khng c v tr ct, hoc

- thit b c b lc nhiu rai. Trong trng hp ny, dng in r vi b lc c tho ri khng c vt qu cc gii hn qui nh.

i vi thit b kt hp, dng in r tng c th nm trong gii hn qui nh cho thit b gia nhit hoc thit b truyn ng bng ng c in, chn gi tr no ln hn, nhng khng c cng hai gii hn ny vi nhau.

i vi php o dng in d, s dng ampe mt tr khng thp o gi tr hiu dng thc t ca dng in.

16.3. Ngay sau th nghim 16.2, cch in phi chu in p c tn s 50 Hz hoc 60 Hz trong 1 min theo IEC 61180-1. Gi tr in p th nghim dng cho cc loi cch in khc nhau c cho trong Bng 7.Cc b phn chm ti c ca vt liu cch in c bc bng l kim loi.

CH THCH 1: L kim toi cn c t cn thn khng xut hin phng in b mt ti cc mp ca cch in.Bng 7 - in p th nghim

Cch inin p th nghim

V

in p danh nh ain p lm vic (U)

SELV 150 V> 150 V v 250 V b> 250 V

Cch in chnh c5001 2501 2501,2 U +950

Cch in ph c-1 2501 7501,2 U + 1 450

Cch in tng cng-2 5003 0002,4 U + 2 400

a i vi thit b nhiu pha, in p pha - trung tnh hoc pha - t c dng lm in p danh nh. in p th nghim dng cho thit b nhiu pha 480 V l in p qui nh i vi in p danh nh nm trong di > 150V v 250 V

b i vi thit b c in p danh nh 150 V, th in p th nghim ny t ln cc b phn c in p lm vic >150 V v 250 V.c Kt cu m cch in chnh v cch in ph khng th th nghim ring bit, cch in ny phi chu in p th nghim qui nh cho cch in tng cng.

in p th nghim c t gia cc b phn kim loi chm ti c v dy ngun c bc l kim loi ch dy ngun t trong ng lt, i vi thit b c ni y kiu X, th dy ngun c t trn gi gi dy hoc c cu chn dy bng cc vt kp, nu c, tt c cc vt kp c xit vi lc bng hai phn ba gi tr qui nh trong Bng 14. in p th nghim l 1 250 V i vi thit b cp 0 v thit b cp I v 1 750 V i vi thit b cp II.

CH THCH 2: Cc c tnh ca ngun in cao p dng th nghim c m t trong Bng 5.

CH THCH 3: i vi kt cu cp II kt hp vi c cch in tng cng v cch in kp, phi ch cn thn in p t ln cch in tng cng khng gy ng sut in qu ln ln cch in chnh hoc cch in ph.

CH THCH 4: Khi th nghim lp ph cch in, l kim loi c th c p vo cch in bng ti ct sao cho lc p xp x bng 5 kPa. Th nghim ny c th c gii hn v tr m cch in c nhiu kh nng b yu, v d ch c g kim loi sc bn di cch in.

CH THCH 5: Nu thc hin c, th cc lp lt cch in c th nghim ring bit.CH THCH 6: Cn ch trnh ng sut qu mc cc linh kin ca mch in t.

Khng c xut hin phng in nh thng trong qu trnh th nghim.

17. Bo v qu ti my bin p v cc mch lin quan

Thit b c mch in c cp ngun t my bin p phi c kt cu sao cho trong trng hp ngn mch c nhiu kh nng xy ra trong s dng bnh thng, my bin p hoc mch lp cng vi my bin p khng b nng qu mc.CH THCH: V d ngn mch ca cc dy dn trn hoc dy dn cch in khng thch hp ca mch chm ti c lm vic in p cc thp an ton.

Kim tra s ph hp bng cch p dng iu kin ngn mch hoc qu ti bt li nht c th xut hin trong s dng bnh thng, thit b c cung cp in p bng 1,06 ln hoc 0,94 ln in p danh nh, chn gi tr bt li hn. Cch in chnh khng c ni tt.

tng nhit ca cch in dy dn ca mch in p cc thp an ton khng c vt qu 15 C so vi gi tr tng ng qui nh trong Bng 3.

Nhit ca cun dy khng c vt qu gi tr c qui nh trong Bng 8. Tuy nhin, khng p dng gii hn ny cho my bin p an ton khi c s c ph hp vi iu 15.5 ca IEC 61558-1.

18. bn

CH THCH: Cc yu cu v th nghim c qui nh trong cc Phn 2 ca b TCVN 5699 (EEC 60335) khi cn thit.

19. Hot ng khng bnh thng

19.1. Thit b phi c kt cu sao cho ngn nga ti a cc ri ro v chy, h hi c kh lm nh hng xu n an ton hoc n bo v chng in git do hot ng khng bnh thng hoc thiu cn thn.

Mch in t phi c thit k v t sao cho iu kin s c s khng lm cho thit b mt an ton lin quan ti in git, nguy c ha hon, nguy him v c hc hoc s c nguy him.Thit b c phn t gia nhit phi chu cc th nghim 19.2 v 19.3. Ngoi ra, nu cc thit b ny c b khng ch hn ch nhit trong th nghim iu 11, th cn phi chu th nghim ca 19.4 v, khi p dng c, phi chu c th nghim ca 19.5. Thit b c phn t gia nhit PTC cn phi chu th nghim 19.6.

Thit b c ng c phi chu cc th nghim t 19.7 n 19.10, ty theo trng hp p dng.

Thit b c mch in t cng phi chu cc th nghim 19.11 v 19.12, ty theo trng hp p dng.Thit b c cngtct hoc rle phi chu th nghim 19.14.

Thit b c chuyn mch chn in p phi chu th nghim 19.15.

Nu khng c qui nh no khc, th nghim c tip tc cho n khi b ct nhit khng t phc hi tc ng hoc n khi iu kin n nh c xc lp. Nu phn t gia nhit hoc b phn yu nh trc b t mch th lp ti th nghim tng ng trn mu th hai. Th nghim th hai phi c kt thc theo cng mt phng thc nh trn, tr khi th nghim ny c hon thnh tha ng nh khi khng xy ra hin tng .

CH THCH: C th s dng cu chy, c cu ct theo nguyn l nhit, c cu bo v qu dng hoc thit b tng t, lp bn trong thit b to ra bo v cn thit. C cu bo v t trn h thng i dy c nh khng to ra bo v cn thit.

Nu khng c qui nh no khc, th mi ln ch m phng mt iu kin khng bnh thng.

Nu c hai th nghim tr ln p dng cho cng mt thit b, th cc th nghim ny c thc hin ln lt sau khi thit b ngui v nhit phng.

i vi thit b kt hp, th nghim c thc hin trn cc ng c v phn t gia nhit hot ng ng thi trong iu kin lm vic bnh thng, mi th nghim thch hp p dng cho mt ng c in v mt phn t gia nhit.

Khi c qui nh rng cn ni tt mt b khng ch th c th thay th bng cch lm cho n mt hiu lc.Nu khng c qui nh no khc, kim tra s ph hp vi th nghim ca iu ny nh m t 19.13.

19.2. Thit b c cc phn t gia nhit c th nghim iu kin qui nh trong iu 11 nhng tn nhit b hn ch. in p ngun c xc nh trc khi th nghim l in p cn thit to ra cng sut vo bng 0,85 ln cng sut vo danh nh khi lm vic bnh thng v khi cng sut vo c thit lp. in p ny c duy tr trong sut thi gian th nghim.

CH THCH: Cho php b khng ch tc ng trong qu trnh th nghim iu 11.

19.3. Th nghim 19.2 c lp li nhng vi in p ngun, c xc nh trc khi th nghim, bng in p cn thit to ra mt cng sut vo bng 1,24 ln cng sut vo danh nh trong iu kin lm vic bnh thng khi cng sut vo n nh. in p ny c duy tr trong sut thi gian th nghim.

CH THCH: Cho php b khng ch lm vic trong qu trnh th nghim ca iu 11.

19.4. Thit b c th nghim iu kin qui nh trong iu 11. Tt c cc b khng ch gii hn nhit trong qu trnh th nghim ca iu 11 u c ni tt.

Nu thit b c nhiu b khng ch th ni tt ln lt.

19.5. Th nghim 19.4 c lp li trn thit b cp 0I v thit b cp I c cc phn t gia nhit c bc bng ng hoc chn chm. Tuy nhin, khng ni tt cc b khng ch, m ni mt u ca phn t gia nhit vi v bc ca phn t gia nhit.

Lp li th nghim ny nhng o cc tnh ca ngun cung cp in cho thit b v u kia ca phn t gia nhit ni ti v bc.

Khng thc hin th nghim ny trn thit b c thit k ni c nh vi h thng i dy c nh v trn thit b m trong qu trnh th nghim ca 19.4 xy ra ngt tt c cc cc.

Cc thit b c trung tnh th th nghim vi trung tnh ni vi v.

CH THCH: i vi phn t gia nhit chn chm, v bc kim loi c coi l v bc.

19.6. Thit b c phn t gia nhit PTC c cung cp in p danh nh cho n khi t c trng thi n nh v cng sut vo v nhit .

Tng in p lm vic ca phn t gia nhit PTC ln 5 % v vn hnh thit b cho n khi iu kin n nh c thit lp tr li. Sau tng in p theo cc nc tng t n khi t c 1,5 ln in p lm vic hoc n khi phn t gia nhit PTC b t, ty theo hin tng no xut hin trc.

19.7. Thit b c vn hnh trong iu kin dng bng cch:

- hm rto nu mmen hm nh hn mmen ti ton phn;

- hm cc b phn chuyn ng ca cc thit b khc.

Nu thit b c nhiu ng c th tin hnh th nghim cho tng ng c mt.

Thit b c ng c v c t in lp trong mch ca cun dy ph th cho vn hnh vi rto b hm, cc t h mch mi ln mt chic. Th nghim ny c lp li vi t in c ni tt mi ln mt chic, tr cc t in loi P2 ca IEC 60252-1.

CH THCH 1: Th nghim ny c thc hin vi rto b hm v mt s ng c c th khi ng dn n cc kt qu khc nhau.

i vi mi th nghim, cc thit b c b hn gi hoc b iu khin theo chng trnh th c cp in in p danh nh trong thi gian bng thi gian ln nht t c ca b hn gi hoc b iu khin theo chng trnh.

Cc thit b khc c cp in in p danh nh trong thi gian l:

- 30 s i vi:

thit b cm tay;

thit b cn dng tay hoc chn duy tr cp in; hoc thit b c cp ti tin tc bng tay;

- 5 min i vi cc thit b khc m khi hot ng phi c ngi trng coi;

- cho n khi iu kin n nh c xc lp, i vi thit b khc.

CH THCH 2: Thit b no c th nghim trong 5 min th c ch ra trong cc Phn 2 ca b TCVN 5699 (IEC 60335) c lin quan.

Trong qu trnh th nghim, nhit ca cun dy khng c vt qu gi tr tng ng qui nh trong Bng 8.

Bng 8 - Nhit ln nht ca cun dy

Loi thit bNhit C

Cp 105 (A)Cp 120 (E)Cp 130 (B)Cp 155 (F)Cp 180 (H)Cp 200 (N)Cp 220 (R)Cp 250

Thit b khng thuc loi c vn hnh cho n khi iu kin n nh c xc lp200215225240260280300330

Thit b hot ng cho n khi iu kin n nh c xc lp

- nu c tr khng bo v150165175190210230250280

- nu c bo v bng c cu bo v

gi tr ln nht, trong sut gi u tin200215225240260280300330

gi tr ln nht, sau gi u tin175190200215235255275305

gi tr trung bnh s hc, sau gi u tin150165175190210230250280

19.8. Ngt mch mt pha ca thit b c lp ng c in ba pha. Sau cho thit b lm vic trong ch lm vic bnh thng v cp in in p danh nh trong thi gian c qui nh 19.7.

19.9. Tin hnh th nghim qu ti lin tc i vi thit b c ng c in c thit k iu khin t xa hay iu khin t ng hoc c th s phi vn hnh lin tc.

Thit b truyn ng bng ng c in v thit b kt hp m c th p dng iu 30.2.3 v s dng c cu bo v qu ti nh vo mch in t bo v cun dy ca ng c, tr cun dy cm bin trc tip vi nhit cun dy, u phi chu th nghim qu ti lin tc.

Thit b c vn hnh trong ch lm vic bnh thng v cp in in p danh nh cho n khi iu kin n nh c xc lp. Sau tng ti ln sao cho dng in qua cun dy ca ng c tng 10 % v cho thit b vn hnh tr li cho n khi iu kin n nh c xc lp, in p ngun cung cp vn duy tr gi tr ban u. Li tng ti ln v lp li th nghim cho n khi c cu bo v tc ng hoc ng c in khng chy c.

Trong qu trnh th nghim nhit cun dy khng c vt qu:

- 140 C i vi cch in cun dy cp 105 (A);

- 155 C i vi cch in cun dy cp 120 (E);

- 165 C i vi cch in cun dy cp 130 (B);

- 180 C i vi cch in cun dy cp 155 (F);

- 200 C i vi cch in cun dy cp 180 (H);

- 220 C i vi cch in cun dy cp 200 (N);

- 240 C i vi cch in cun y cp 220 (R);

- 270 C i vi cch in cun dy cp 250.

CH THCH: Nu khng th tng ti theo tng nc thch hp th tho ng c in ra khi thit b v th nghim ring bit.

19.10. Thit b c lp ng c kch thch ni tip c vn hnh vi ti nh nht c th v c cp in bng 1,3 ln in p danh nh trong 1 min.Trong qu trnh th nghim, cc b phn khng c vng ra khi thit b.

19.11. Kim tra mch in t bng cch nh gi cc iu kin s c qui nh trong 19.11.2 i vi tt c cc mch hoc cc phn ca mch, tr khi chng ph hp vi cc iu kin qui nh trong 19.11.1.

CH THCH 1: Nhn chung, kim tra thit b v kim tra cc s mch din ca thit b c th pht hin cc iu kin s c cn phi m phng, sao cho th nghim c th c gii hn cc trng hp c th dn ti cc kt qu bt li nht.

Nu thit b c lp mch in t m mch ny da vo thnh phn lp trnh c hot ng ng th phi chu th nghim ca 19.11.4.8, tr khi vic khi ng li thit b ti im bt k trong chu k lm vic sau khi b gin on do st in p ngun cng khng gy nguy him. Tin hnh th nghim sau khi tho tt c pin/acqui v cc linh kin khc c thit k duy tr in p cung cp cho thnh phn lp trnh c ny trong qu trnh st, mt v bin i in p ngun li.

Thit b c c cu t c v tr ct bng b ngt in t, hoc c cu c th t thit b ch ch, phi chu cc th nghim ca 19.11.4.

CH THCH 2: c thng tin trong hng dn chung lin quan n trnh t cc th nghim nh gi mch in t, tham kho Ph lc Q. Cn hiu rng trong cc Phn 2 ca b TCVN 5699 (IEC 60335) c th c qui nh v cc th nghim lm vic khng bnh thng b sung hoc thay th; nhng khng th hin trn lu . p dng ng tiu chun, cc ni dung mang tnh quy nh c u tin ly t hng dn nu trong Ph lc Q.

Nu s an ton ca thit b iu kin s c bt k u ph thuc vo tc ng ca cu chy c nh theo IEC 60127, th tin hnh th nghim theo 19.12.

Trong qu trnh th nghim v sau mi th nghim, nhit ca cc cun dy khng c vt qu cc gi tr qui nh trong Bng 8. Tuy nhin, cc gii hn ny khng p dng cho bin p an ton khi c s c ph hp vi 15.5 ca IEC 61558-1. Thit b phi ph hp vi cc iu kin qui nh 19.13. Bt k dng in no chy qua tr khng bo v u khng c vt qu cc gii hn qui nh trong 8.1.4.CH THCH 3: Tr khi cn phi thay th cc linh kin sau th nghim bt k, ch cn thc hin th nghim bn in qui nh trong 19.13 sau khi kt thc th nghim trn mch in t.

Nu mt ng dn ca tm mch in b t, thit b vn c coi l chu c th nghim c th ny, vi iu kin phi tha mn c hai iu kin sau:

- vt liu nn ca tm mch in phi chu c th nghim Ph lc E;

- bt k ng dn no b bong ra u khng lm gim chiu di ng r hoc khe h khng kh gia cc b phn mang in v b phn kim loi chm ti c xung thp hn cc gi tr qui nh trong iu 29;

19.11.1. Cc iu kin s c t a) n g) qui nh trong 19.11.2 khng p dng cho cc mch in hoc mt phn ca mch in khi tha mn c hai iu kin sau:

- mch in t l mch cng sut nh nh m t di y;

- bo v chng in git, nguy c ha hon, nguy him v c hoc s c nguy him cc phn khc ca thit b khng da trn s hot ng ng ca mch in t.

V d v mch cng sut thp c th hin trn Hnh 6 v c xc nh nh sau:

Thit b c cp in in p danh nh v mt bin tr c iu chnh n gi tr in tr ln nht c ni gia im cn kho st v cc i din ca ngun cung cp. Sau gim in tr cho n khi cng sut tiu th trn in tr t n cc i. Cc im gn ngun nht m im cng sut ln nht truyn n in tr ny khng vt qu 15 W sau 5 s th c gi l cc im cng sut nh. Phn ca mch in cch ngun cung cp xa hn cc im cng sut thp c coi l mch cng sut thp.

CH THCH 1: Cc php o ch cn thc hin t mt cc ca ngun cung cp, tt nht l cc no c s im cng sut nh l t nht.

CH THCH 2: Khi xc nh cc im cng sut nh, nn bt u t cc im gn ngun cung cp.

CH THCH 3: Cng sut tiu th trn bin tr c o bng ot mt.

19.11.2. Cc tnh trng s c di y c xem xt v, nu cn, mi ln p dng mt tnh trng, cc s c mang tnh hu qu cn c tnh n l:

a) ngn mch cch in chc nng nu chiu di ng r hoc khe h khng kh nh hn cc gi tr qui nh iu 29;

b) h mch ti u ni ca bt k linh kin no.

c) ngn mch cc t in, tr khi chng ph hp vi IEC 60384-14.

d) ngn mch hai chn bt k ca mt linh kin in t, khng phi l mch tch hp. Tnh trng s c ny khng p dng gia hai mch ca b ghp ni quang.

e) hng triac ch it.

f) hng b vi x l v mch tch hp ngoi tr cc linh kin nh thyristo v triac. Tt c cc tn hiu u ra c th c, u c xem xt i vi s c c nhiu kh nng xut hin trong linh kin. Nu ch ra c rng khng th xut hin mt tn hiu u ra c th th khi khng cn xem xt s c lin quan.

g) hng c cu ng ct in bng in t ch ng in tng phn km theo mt iu khin cc cng (cc gc).

CH THCH 1: Ch ny c th c m phng bng cch ngt tn hiu vo cc cng (cc gc) ca c cu ng ct in bng in t v ni ngun in c th iu chnh bn ngoi vo cc cng (cc gc) v cc ngun (cc pht) ca thit b ng ct in bng in t. Sau , thay i ngun cng sut sao cho t c dng in khng lm hng c cu ng ct in bng in t nhng s to ra cc iu kin th nghim khc nghit nht.

CH THCH 2: V d v c cu ng ct in bng in t l transistor trng (FET v MOSFET) v transistor lng cc (k c IGBT)

Tnh trng s c f) p dng cho cc linh kin c v bc v cc linh kin tng t nu nh khng th nh gi mch ny bng cc phng php khc.

Cc in tr c h s nhit dng khng c ngn mch nu chng c s dng trong phm vi qui nh k thut ca nh ch to. Tuy nhin, c php ngn mch cc in tr c h s nhit m PTC-S tr khi chng ph hp vi IEC 60738-1.

Ngoi ra, mi mch cng sut nh u c ngn mch bng cch ni im cng sut thp ti cc ca ngun cung cp in m t cc php o c thc hin.

m phng cc tnh trng s c, thit b c vn hnh iu kin qui nh trong iu 11, nhng c cp in in p danh nh.

Khi m phng cc iu kin s c bt k, thi gian th nghim l:

- nh qui nh trong 11.7, nhng ch trong mt chu k hot ng v ch khi ngi s dng khng th nhn ra l c s c, v d, s thay i v nhit ;

- nh qui nh trong 19.7, nu ngi s dng c th nhn ra s c, v d, khi ng c in ca thit b nh bp ngng hot ng;

- cho n khi iu kin n nh c xc lp, i vi mch c ni lin tc vi ngun li, v d, mch ch.

Trong mi trng hp, nu xut hin gin on khng t phc hi ngun cung cp trong thit b th kt thc th nghim.19.11.3. Nu thit b c mch bo v bng in t hot ng m bo ph hp vi iu 19, th cc th nghim lin quan c lp li vi s c n c m phng, nh ch ra trong cc im t a) n g) ca 19.11 2.

CH THCH: Tiu ch ph hp i vi cc th nghim ny c a ra chi tit trong 19.13.

19.11.4. Thit b c c cu c v tr ct bng b ngt in t, hoc c cu c th c t ch ch phi chu cc th nghim t 19.11.4.1 n 19.11.4.7. Tin hnh cc th nghim khi thit b c cp in ti in p danh nh, c cu c t v tr ct hoc ch ch.

Thit b c mch bo v bng in t phi chu cc th nghim t 19.11.4.1 n 19.11.4.7. Tin hnh cc th nghim sau khi mch bo v bng in t hot ng trong cc th nghim lin quan iu 19 ngoi tr 19.2, 19.6 v 19.11.3. Tuy nhin, thit b tc ng trong 30 s hoc 5 min trong thi gian th nghim 19.7 th khng phi chu cc th nghim v hin tng in t trng.

Th nghim c tin hnh vi c cu bo v t bin c tho ra, tr phi l c cu bo v t bin.

CH THCH 1: Nu thit b c mt s ch hot ng, th tin hnh cc th nghim vi thit b lm vic tng ch , nu t