SELF-CONTAINED INDUCTIVE VOLTAGE TRANSFORMERS 7.2 kV … · 2015. 6. 24. · IEC 60071-1:2006...

SVENSKA KRAFTNÄ'! S W E D I S H N A T I O N A L G R I D

UNIT, BUSINESS AREA AFS, Anläggningar

DATE 2015-03-18

CONSULTATIONS NB, NK, AS, AN

Mtj

OUR REFERENCE

TROI-O5E

T E C H N I C A L G U I D E L I N E

REVISION

4 APPROVED Td

0

SELF-CONTAINED INDUCTIVE VOLTAGE TRANSFORMERS 7.2 kV - 420 kV

INTRODUCTION This English text is to be regarded as a translation of the Swedish guideline edition. The Swedish text and the interpretation thereof shall govern the contract and the legal relations between parties.

These guidelines are mainly based on Standard SS-EN 61869-1 and SS-EN 61869-3. The guidelines specify alternatives in the case of several options in the standards, and also include additions and clarifications to the standards. The guidelines can be made binding conditions for the procurement by the Purchaser, and will in such case togeth-er with the applicable standards form specification of the requirements. In this situation the documents will be valid for design and testing of voltage transformers at rated voltages 7.2 - 420 kV.

These guidelines are not applicable for electronic voltage transformers.

T E K N I S K R I K T L I N J E 2 0 1 5 - 0 3 - 1 8 T R 0 1 - 0 5 E u i g 4

1 / 2 3

TEKNISK RIKTLINJE 2015-03-18 TR01-05E utg 4

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Revision Notes Change notes Date

B Revision 2006-09-25

3 New template. Collaboration with Vattenfall removed.

Table with creepage distances have been updated, all creepage

distances for both ceramic and non-ceramic insulators are now identi-

cal.

The table in section 2.7.2 Loading Capacity have been clarified.

2013-02-25

4 Technical guideline’s headline changed in accordance with the stand-

ard. New standard SS-EN 61869. Other standards updated. Insulator

test according to appendix removed. Requirement for winding for earth

fault protection on request.

2015-03-18


3/23

Content

1 General ....................................................................................................................... 5

1.1 Applicable standards ................................................................................... 5

1.2 Ambient temperature .................................................................................. 6

1.3 Wind .............................................................................................................. 6

2 Ratings ....................................................................................................................... 7

2.1 Rated frequency ........................................................................................... 7

2.2 Rated primary voltage ................................................................................ 7

2.3 Rated secondary voltages .......................................................................... 8

2.4 Inter-ratio connection ................................................................................ 8

2.5 Insulation ..................................................................................................... 9

2.5.1 Insulation levels............................................................................. 9

2.5.2 Creepage distances ........................................................................ 9

2.6 Rated voltage factor .................................................................................. 10

2.7 Secondary windings .................................................................................. 10

2.7.1 General ......................................................................................... 10

2.7.2 Loading capacity ......................................................................... 11

3 Design ...................................................................................................................... 13

3.1 General ....................................................................................................... 13

3.1.1 ...................................................................................................... 13

3.1.2 ...................................................................................................... 13

3.1.3 ...................................................................................................... 13

3.1.4 ...................................................................................................... 13

3.1.5 ...................................................................................................... 13

3.1.6 ...................................................................................................... 14

3.1.7 ...................................................................................................... 14

3.2 Gas-insulated voltage transformers ........................................................ 14

3.3 Mechanical strength .................................................................................. 14

3.4 Primary terminals ..................................................................................... 14

3.4.1 Design .......................................................................................... 14

3.4.2 Mechanical stress ........................................................................ 15

3.5 Secondary terminals .................................................................................. 15

3.5.1 Terminal box for secondary terminals ...................................... 15


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3.5.2 Contact components .................................................................... 15

3.5.3 Earthing clamps .......................................................................... 15

3.5.4 Clamp design ............................................................................... 15

3.6 Marking ...................................................................................................... 15

3.6.1 Rating plates................................................................................ 15

3.6.2 Circuit diagram plate ................................................................. 15

3.6.3 Plate design .................................................................................. 16

3.7 Insulators ................................................................................................... 16

4 Testing ..................................................................................................................... 17

4.1 Type tests .................................................................................................... 17

4.1.1 Insulator test ............................................................................... 17

4.2 Routine test ................................................................................................. 17

4.2.1 Check of partial discharges ........................................................ 18

4.2.2 Insulator testing .......................................................................... 18

4.3 Test certificates .......................................................................................... 18

4.3.1 Type test certificates ................................................................... 18

4.3.2 Routine test certificates .............................................................. 18

5 Documentation ........................................................................................................ 18

5.1 General ....................................................................................................... 18

5.2 Tender documentation .............................................................................. 18

5.3 Documentation together with apparatus delivery .................................. 19

5.4 Documentation and spares after delivery .............................................. 20

6 Delivery ................................................................................................................... 20

7 Appendix .................................................................................................................. 21

7.1 Appendix 1. Terminal Plate and Bolt, dimensions. .................................. 21

7.2 Appendix 2. Component Data List ...........................................................22


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1 General

1.1 Applicable standards Applicable Swedish Standards are valid. When there is no Swedish Standard, Europe-

an Standard (EN) and IEC Publication shall apply. The latest edition shall apply.

Where voltage transformers offered do not in every way fulfil the stipulated standards

and the additions of the guidelines, deviations shall be specified.

Applicable standards and guidelines:

SS-EN 61869-1:2013 Instrument transformers – Part 1: General require-

ments

SS-EN 61869-3:2012 Instrument transformers – Part 3: Additional require-

ments for inductive voltage transformers

IEC 60071-1:2006 Insulation coordination

IEC60 273:1990 Insulators – Support insulators for switchgear at

system voltage over 1000 V – Dimensions and technical

data

SS-EN 60529:2000 Degrees of protection provided by enclosures (IP code).

SS-EN ISO 1461: 2009 Hot dip galvanized coatings on fabricated iron and steel

articles – Specifications and testing procedures.

SS 421 01 67 :2001 Design of outdoor substations - Wind and ice loads.

IEC 60296:2012 Fluids for electrotechnical applications – unused

mineral insulating oils for transformers and switchgear

SS-EN 62155 :2003 Hollow pressurized and unpressurized ceramic and

glass insulators for use in electrical equipment with

rated voltages greater than 1 000 V

IEC/TS 60815 -2 Guide for the selection of insulators in respect of

polluted conditions - Part 2: Ceramic insulators.

IEC/TS 60815 -3 Guide for the selection of insulators in respect of

polluted conditions - Part 3: Polymer insulators.

SS-EN 61462:2008 Composite insulators – Hollow insulators for use in

outdoor and indoor electrical equipment.


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SS-EN 50052 –C1:2008 Cast aluminium alloy enclosures for gas filled

high-voltage switchgear and controlgear.

SS-EN 50064 T1,–C1:2008 Wrought aluminium and aluminium alloy enclosures

for gas-filled high-voltage switchgear and controlgear.

SS-EN 50068 –C1:2008 Wrought steel enclosures for gas-filled high-voltage

switchgear and controlgear.

SS-EN 50069 –C1:2008 Welded composite enclosures of cast and wrought

aluminium alloys for gas-filled high-voltage switchgear

and controlgear.

1.2 Ambient temperature It shall be informed at which conditions the voltage transformer shall be installed on

site and which temperature interval is applicable. The following temperature limits

shall apply for different applications:

Application Lower limit Upper limit

Degrees Celsius

For indoor installation - 25 + 40

Outdoor, with solid and liquid insulation - 50 + 40

Outdoor, with gas insulation, north of

Dalälven - 50 + 40

Outdoor, with gas insulation, south of

Dalälven - 40 + 40

1.3 Wind For normal applications the wind pressure 700 Pa against a plane surface shall apply.

This corresponds to a wind velocity of 34 m/s. For equipment in exposed locations, e.g.

coastal or mountain areas, a higher wind pressure might be necessary. Design shall in

such case be done with a wind pressure in accordance with SS 421 01 67.


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2 Ratings

2.1 Rated frequency The rated frequency shall be 50 Hz.

2.2 Rated primary voltage The voltage transformers shall be designed for application in accordance to one of the

following alternatives:

I. Connection between phase and earth

II. Connection between neutral and earth

III. Connection between phases

The rated primary voltage shall be chosen from the values below:


6.6/√3; 11/√3; 22/√3; 33/√3; 44/√3; 77/√3 kV

The transformers for system voltage of 170 kV (145 kV) shall be possible to in-

terconnect between the primary voltage ratings of:

132/√3 − 154/√3 kV

The transformers for system voltage of 245 kV shall be possible to intercon-

nect between the primary voltage ratings of:

220/√3 − 242/√3 kV

The transformers for system voltage of 420 kV shall have a primary voltage

rating of:

407/√3 kV

as the main option. The transformers can be specified to be possible to inter-

connect between the primary voltage ratings of:

385/√3 − 396/√3 − 407/√3 kV


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6.6/√3; 11/√3; 22/√3; 33/√3; 44/√3; 77/√3 kV


6.6; 11; 22; 33; 44 kV

2.3 Rated secondary voltages Secondary voltages shall be chosen from the following values (Upr = rated primary

voltage):


Winding for relay protection (not earth fault protec-

tion) , measurement and synchronization 110/√3 V

* Winding for earth fault protection in non-solidly

earthed systems (𝑈𝑝𝑟 ≤ 77/√3 kV) 110/3 V

* Winding for earth fault protection in solidly earthed

systems (𝑈𝑝𝑟 = 132/√3 − 407/√3 kV) 110 ∗ √3 V

* Normally, the voltage transformer shall not have a winding for earth fault

protection. If the winding for earth fault protection is requested it shall be

stated in the invitation to tender.


Winding for earth fault indication or earth fault protection

(if included on request): 110 V


Winding for measurement or phasing and voltage regulation: 110 V

2.4 Inter-ratio connection Change-over from one ratio to another shall be carried out at the secondary side. All

other requirements (e.g. concerning rated burden) must be satisfied, even for the most

unfavourable alternative.


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2.5 Insulation

2.5.1 Insulation levels

The following selection of insulation levels shall apply:

Rated primary

voltage

Upr

kVr.m.s.

Highest

voltage

for

equip-

ment

kVr.m.s.

Rated withstand voltage for:

Lightning

impulse

kVpeak

Switching

impulse

kVpeak

1 min power

frequency test

kVr.m.s.

6.6/√3 (6.6) 7.2 60 – 20

11/√3 (11) 12 75 – 28

22/√3 (22) 24 125 – 50

33/√3 (33) 36 170 – 70

44/√3 (44) 52 250 – 95

77/√3 82.5 380 – 150

132/√3 − 154/√3 170 (145) 650 – 275

220/√3 − 242/√3 245 950 – 395

385/√3 − 395/√3 − 407/√3 420 1425 1050 460

407/√3 420 1425 1050 460

2.5.2 Creepage distances

See clause on insulators, Clause 3.7.


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2.6 Rated voltage factor Rated voltage factor shall be in accordance with SS-EN 61869-3, that is:

Rated primary voltage

Upr

KVr.m.s

Rated voltage factor

Continuous During 8 h During 30 s

𝑈𝑝𝑟 ≤ 11/√3 1,2 1,9 –

22/√3 ≤ 𝑈𝑝𝑟 ≤ 77/√3 1,2 – 1,9

𝑈𝑝𝑟 = 132/√3 − 407/√3 1,2 – 1,5

Voltage transformers intended for connection between neutral and earth, as well as

between phases, shall only be designed for the rated voltage factor 1.2 continuously.

2.7 Secondary windings

2.7.1 General

The voltage transformers shall be designed with the following windings:


• One combined measuring, relay and synchronization winding

• One electrically completely separated earth-fault winding (if included on

request acc. to 2.3)


• One earth-fault winding (if included on request acc. to 2.3)


• One measuring winding


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2.7.2 Loading capacity


The measuring, relay and synchronisation winding shall fulfil the following

demands at unloaded earth-fault winding (if included on request acc. to 2.3):

Rated primary voltage

Upr

KVr.m.s

Rated burden

VA Class

6.6/√3 − 22/√3 25/50 0.2 / 0.5

33/√3 50 0.2 och 3 P

44/√3 50 0.2 och 3 P

77/√3 50 0.2 och 3 P

132/√3 − 154/√3 50 0.2 och 3 P

220/√3 − 242/√3 50 0.2 och 3 P

385/√3 − 407/√3 50 0.2 och 3 P

The accuracy class 0.2 shall be kept from 1 to 50 VA and the transformer shall

be zero adjusted at 50 % of the rated burden.


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The earth-fault winding (if included on request acc. to 2.3) shall fulfil the fol-

lowing demands:

Rated primary

voltage

Upr

kVeff

Rated burden

VA

at cos φ = 1

Accuracy requirements

6.6/√3 − 11/√3 50 Class 3 P

22/√3 − 77/√3 50

Class 3 P (Rated over voltage factor 1.9) and

with both secondary windings loaded at 1 VA

– 100 % of their rated burdens respectively.

132/√3 − 154/√3 50

Class 0.5 within 0.9 – 1.5 times the rated

voltage at 0 – 100 % of the rated burden of

the earth-fault winding and the measuring

winding loaded at 1 VA – 100 % of its rated

burden. Actual phase angle displacement at

1.5 times rated voltage and unloaded wind-

ing shall be specified.

220/√3 − 407/√3 50

Class 0.5 within 0.9 – 1.5 times the rated

voltage at 0 – 100 % of the rated burden of

the earth-fault winding and the measuring

winding loaded at 1 VA – 100 % of its rated

burden. Actual phase angle displacement at

1.5 times rated voltage and unloaded wind-

ing shall be specified.


The earth-fault winding (if included on request acc. to 2.3) shall fulfil the fol-

lowing demand:

Rated burden

VA Class

50 6 P

Rated voltage factor 1.2.


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The measuring winding shall fulfil the following demand:

Rated burden

VA Class

50 0.2

The accuracy class shall be kept from 1 VA to 50 VA.

3 Design

3.1 General Voltage transformers shall be equipped, if possible, with solid insulation. Alternatively

they may have liquid or gas insulation, depending on different environmental de-

mands. The quantity of liquid or gas shall in that case be as small as possible, prefera-

bly less than 200 kg liquid.

3.1.1

All parts exposed to corrosion shall be made of non-corrosive material, or be hot-dip

galvanized according to SS-EN ISO 1461.

3.1.2

The voltage transformers shall be hermetically sealed if applicable.

3.1.3

Liquid-insulated voltage transformers shall be equipped with an easily readable liquid

level indicator.

3.1.4

The metallic lower part of the voltage transformer shall be provided with at least two

earthing clamps. For voltages ≥ 170 kV the earthing clamps shall be designed for up to

120 mm2 copper conductor.

3.1.5

Voltage transformers for a highest voltage for equipment of 245 kV or 420 kV shall be

possible to transport in horizontal position.


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3.1.6

Liquid-filled current transformers shall be completely free from PCB.

3.1.7 Voltage transformers with a rated primary voltage of 𝑈𝑝𝑟 ≤ 22/√3 kV for indoor appli-

cations shall be of dry type and intended for erection in arbitrary position. Transfor-

mers of dry type intended for outdoor application and with 𝑈𝑝𝑟 ≤ 22/√3 kV can be

designed without outer insulation.

Other transformers of dry type intended for outdoor application shall be provided with

an external insulation in accordance with Clause 3.7.

3.2 Gas-insulated voltage transformers Gas-filled voltage transformers shall preferable have pure SF6 without other gas mix-

tures. When mixed gas is needed, N2 will be accepted, but not CF4 due to environmen-

tal reasons. At a maximum, 0.5 % gas leakage per year will be accepted. Gas- filled

voltage transformers shall be monitored by a density relay with a closing contact func-

tioning at two levels (filling, blocking). The density shall also be indicated on pointer

type instrument.

3.3 Mechanical strength The voltage transformers shall be designed to withstand the mechanical stresses

which may occur as a result of forces on the primary terminal in accordance with

Clause 3.4.2.

Special consideration shall be given to SS-EN50052 in terms of pressure vessel re-

quirements for pressurized units.

3.4 Primary terminals

3.4.1 Design

The supplier shall denote the material of the terminals. Dimensions of terminals are

shown in Appendix 1.

Terminals of copper or copper alloy shall be tin-plated with a layer of minimum 50

μm, or alternatively silver-plated, with a layer of minimum 20 μm. A copper alloy sen-

sitive to stress corrosion shall not be used.

Terminals made of aluminium or aluminium alloy shall not be surface treated. An

aluminium alloy sensitive to stress corrosion, layer corrosion or intercrystalline corro-

sion shall not be used. Terminal plate of aluminium or aluminium alloy shall have a

hardness of HB minimum 750 N/mm2.


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3.4.2 Mechanical stress

The voltage transformers shall be designed to sustain the mechanical stress that may

occur as a result of forces on the primary terminals. In addition, they shall as applica-

ble fulfil the demands according to SS-EN 61869-1, Table 7.

3.5 Secondary terminals

3.5.1 Terminal box for secondary terminals

The terminal box shall be spacious and allow the connection of necessary connecting

leads to be carried out comfortably.

The terminal box shall be of semi-enclosed and spray-tight design (Protection class

minimum IP 54 according to SS-EN 60529 for 𝑈𝑝𝑟 ≥ 77/√3 kV, IP44 for others) and

shall be provided with rain-protected, net-covered breather holes. Box-cover gaskets

shall be resistant to solar radiation, air, oil and water.

3.5.2 Contact components

All contact components, even screws, shall be made of non-corrosive metal.

3.5.3 Earthing clamps

The terminal box shall be provided with a clamp for earthing of the secondary wind-

ings (Regarding earthing of the base, see Clause 3.1.4).

3.5.4 Clamp design

Terminal clamps and earthing clamps shall be designed for connection of up to 6 mm2

stranded conductors, and be such that conductors can be connected without cable lugs

and without sustaining damage.

3.6 Marking

3.6.1 Rating plates

The voltage transformer rating plate shall include data in accordance with SS-EN

61869-1 and SS-EN 61869-3. Total weight and serial number shall also be specified.

3.6.2 Circuit diagram plate

A lastingly legible circuit diagram plate showing the voltage transformer connection

and terminal markings shall be permanently fixed to the transformer near the secon-

dary terminal box. The circuit diagram plate shall not contain information more than

the delivered apparatus. The specific main data for each winding shall be clear from

the plate.


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3.6.3 Plate design

The rating plates shall be made of anodised aluminium sheet or equivalent non-

corrosive material and shall be fixed with non-corrosive screws. Deviations from this

may only be approved by the purchaser.

3.7 Insulators Insulators shall be of composite for voltage transformers with a highest voltage Um of

245 and 420 kV. For Um < 245 kV composite insulators are preferred. Composite insu-

lators shall be designed and tested in accordance with applicable standards and SS-EN

61462. Ceramic insulators shall be designed and tested in accordance with applicable

standards and IEC/TS 60815-2.

For some exposed locations an increased creepage distance and the possibility for

insulator washing may be required. The possibility for washing shall then be specified

in the request for tender. Voltage transformers may be washable, washable with con-

strains or not washable. If the voltage transformer is washable with constrains the

constrains shall be specified in the tender.

In a normally polluted environment a creepage distance of Site Pollution Severity

(SPS) class b is required and for polluted environment class d is required. Increased

creepage distance is recommended in the west coast of Sweden (approximately 30 km

from the coast and in the valley of the river Göta älv up to the Lake Vänern).

If not other specified the same creepage distance shall be valid for composite and ce-

ramic insulators. The requirement is based on the figure below. For normal environ-

ment SPS class b is valid and for polluted environment class d, according to IEC/TS

60815-2 and IEC/TS 60815-3.

Creepage distance (unified specific creepage distance, USCD) as

function of pollution (SPS class)


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The required creepage distances for insulators in normal and polluted environment are

specified in the table below:

Highest voltage

for equipment,

Um

kV

Minimum creepage distance (mm)

Ceramic/Composite

Polluted environment

(class d)

(klass d)1

Normal environment

(class b)

(klass b)1 12 300 190

24 600 380

36 900 570

52 1300 830

82.5 2060 1320

145 3620 2320

170 4250 2720

245 6120 3920

420 10500 6720

4 Testing

If the test laboratory of the supplier complies with ISO 17025, the laboratory is consid-

ered to fulfil the accuracy demands. If not so, the supplier must show the documenta-

tion on test procedures and the traceability of the standards.

4.1 Type tests It shall be presented that demands on tightness, insulation and accuracy are fulfilled

even at the lowest ambient temperature.

Other type tests shall be done in accordance with SS-EN 61869:1 , Clause 7.2 and SS-

EN 61869-3, Clause 7.2.

4.1.1 Insulator test

Insulators shall be tested according to applicable standards and to IEC 61462 (compo-

site) and IEC 60851 (ceramic), respectively. See also Clause 3.7.

4.2 Routine test Routine tests shall be performed according to SS-EN 61869-1, Clause 7.3, and SS-EN

61869-3, Clause 7.3 with the following clarifications:


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4.2.1 Check of partial discharges

Measuring of partial discharges shall be performed in connection with short time po-

wer frequency voltage test according to test procedure A described in SS-EN 61869-1,

Clause 7.3.2.2.

4.2.2 Insulator testing

Insulators shall be tested according to suitable standard as IEC 61462 (composite) and

IEC 60815 (ceramic). See also Clause 3.7.

4.3 Test certificates

4.3.1 Type test certificates

If production has been moved to another plant, material has been changed, or if type

test certificate is more than five years old, then the type test certificate cannot be ac-

cepted unless special agreement.

4.3.2 Routine test certificates

The routine test certificates shall include, in addition to the routine test results, and

when applicable the following information:

> The date and number of the type test certificate

> Voltage transformer data

> Purchaser’s reference number

> Serial number

> Reference to dimension drawings

5 Documentation

5.1 General Instructions, dimension drawings and diagrams, handed over at delivery of the voltage

transformer, shall be in Swedish.

5.2 Tender documentation With the tender the following documents shall be provided:

> List of data, dimension drawings, electrical circuit and schematic diagrams, in-

structions for erection, operation and maintenance, type test certificates and also

other documents needed for the technical evaluation.


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> Bases for evaluation of the need and costs for maintenance, such as:

• The interval for condition control and other measures of maintenance and the

time necessary for these works.

• Necessary spares, special tools and accessories and the costs for these.

> Environmental information as below (see also TR13-01):

• Information about the main content of the equipment (type of material in per-

centage of weight).

• Information about the content of dangerous substances (for example heavy

metals, carcinogenic compounds and compounds hard to biodegrade, xeno-

biotic substances).

• Handling and treating of the equipment when it has served its time.

5.3 Documentation together with apparatus delivery In connection with the apparatus delivery the following documents shall be submitted

electronically and in one paper copy, if not otherwise agreed:

A list including:

> Purchasing and order number

> Manufacturer

> Type

> Serial number

> Rated data

> Specification on apparatus pressure vessel classification

> Inspection documents

> Type test certificates

> Dimension drawings

Verification (title and number) of the following documents that shall be delivered to-

gether with the list:

> General assembly drawings and drawing lists

> Instructions for transport, storing, erection, service, testing, condition control and

adjustment

> List of other chemical products including gas


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> List of products and protective information for all listed chemical products

> List of special tools and accessories for erection and maintenance

> List of equipment for testing and condition control

> List of spares

> Final dimension drawings

> Final circuit diagrams

> Routine test certificates

> Filled-in component data list according to Appendix 2

A complete compilation file shall be handled over to the buyer, latest when all ordered

voltage transformers are delivered. It shall include test certificates for all voltage trans-

formers of the delivery in accordance with paragraph 4.3.2.

5.4 Documentation and spares after delivery The manufacturer shall at request provide the purchaser with necessary service bulle-

tins and during at least ten years after delivery with for the maintenance necessary

spares. Improvements in design or instructions, which can be applied to the equip-

ment supplied, shall be notified to the buyer also after delivery, preferably in the form

of service bulletins.

6 Delivery

The delivery is not considered complete until entire test certificates and required do-

cumentation have been submitted to the purchaser and have been approved.


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7 Appendix

7.1 Appendix 1. Terminal Plate and Bolt, dimensions.

a

ec

38

d

d

e

a

a

cb b

b

c

Fig. 1 Fig. 2

d

e

b

c

Fig. 3

a

a

cb

c

c

Terminal plate Figure Dimensions (mm): a b c d e

2 - 75 1 2- holes 75 17.5 40 14 10

4 - 75 2 4- holes 75 17.5 40 14 15

9 - 125 3 9- holes 125 22.5 40 14 35

Terminal bolt

Length: 125 mm Diameter: 30, 40 mm


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7.2 Appendix 2. Component Data List

Apparatdatalista för spänningstransformator Svenska Kraftnät

Beskrivning Värde Enhet Not

Allmänt

Station * Ifylls av ställverksbyggaren

EX Hagby, CT 65

Objekt id/Littera * Ifylls av ställverksbyggaren

EX CL6 S5-UT

Lägsta omgivningstemp °C Ex -50

Inköpsnummer *

Leverantörens ordernummer *

Tillverkare *

Typbeteckning *

Tillverkningsnummer * Nummer

Levererad * ååmm

Utförandeform * Induktiv/ Kapacitiv

Huvudkonstruktion * Utomhus/inomhus

Kontruktionsspänning kV EX 420kV

Primär märkspänning kV

Sekundär märkspänning V

Sekundär kortslutningsström A

Primär isolationsnivå till jord -

kort stöt kV EX 1425


lång stöt kV EX 1050


50Hz 1 min kV EX 395

Sekundär korttids växelsp.

lindn-lindn, lindn-jord kV EX 4

Spolbarhet * Ja/Nej/Begränsad

Minsta fasavstånd m

Vikt per tre faser kg

Pris per tre faser SEK

Norm, Riktlinje * EX TR1-05, rev 4, TR1-06,

rev 4


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Standard * SS-EN 61869-6

Ombyggnadsdatum * ååmm

Senaste drifttagningsdatum * ååmm

Sammanställningsritning * Ritningsnummer

Måttskiss * Ritningsnummer

Montage och skötselanvisning * Ritningsnummer

Kretsschema * Ritningsnummer

Provningsnormal * Ritningsnummer

Isolermedium olja/gas/torr, spec nr

Mängd isolermedium kg

Max statisk horisontell

anslutningskraft N EX 3000

Max statisk vertikal anslutningskraft N EX 3000

Apparatuttag, storlek EX 9-125 (platta), 60

(tapp)

Kapslingsklass anslutningslåda * IP54/IP55

Typ av isolator * porslin/komposit

Krypsträcka isolator mm

Ritningsnr pol *

Ritningsnr isolator * nummer

Sekundärlindningar

Märkbörda Huvudlindning VA Ex 50

Uttagsbeteckning Huvudlindning a, b

Klass Huvudlindning * EX 0,2

Omsättning Huvudlindning V

Uttagsbeteckning Jordfelslindning a, b

Klass Jordfelslindning * EX 0,5

Omsättning Jordfelslindning V

Totalvikt

Typ isolermedia

Tangens delta vid Um/V3 och

rumstemperatur

PU-nivå pC

Expansionssystem ex metallbälg

Typ isolermedia

SELF-CONTAINED INDUCTIVE VOLTAGE TRANSFORMERS 7.2 kV … · 2015. 6. 24. · IEC 60071-1:2006...

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Transcript of SELF-CONTAINED INDUCTIVE VOLTAGE TRANSFORMERS 7.2 kV … · 2015. 6. 24. · IEC 60071-1:2006...