karakteristik trafo
2
POTENTIAL TRANSFORMERS POTENTIAL TRANSFORMERS PHONE (614) 889-6152 TECH. ASSISTANCE (614) 876-8308 FAX # (614) 876-8538 6625 McVey Blvd. Columbus, Ohio 43235 Div. Morlan & Associates, Inc. 47 WWW.FLEX-CORE.COM [email protected] HIGH VOLTAGE POTENTIAL TRANSFORMER • Frequency ........................................................ 60Hz. • Standard Secondary Voltage ....................... 120VAC • Insulation Class ........... 15.5kV, BIL 110KV Full Wave • UL Recognized • FOR INDOOR USE ONLY Accuracy Class 0.3 WXMYZ, 1.2ZZ at 100% rated voltage with 120V based ANSI burden. 0.3 WXMY, 1.2Z at 58% rated voltage with 69.3 V based ANSI burden. Frequency ....................................................................... 60Hz Insulation Class ...................... 15.5 kV, BIL 110kV Full Wave Thermal Rating ................................... 1500 VA at 30 O C Amb. ............................................................ 1000 VA at 55 O C Amb. Weight ................................................... Approximately 88 lbs. • Primary terminals that are fused are 1/4 - 20 brass screws with one flatwasher, lockwasher and two nuts. • Secondary terminals are NO. 10-32 brass screws with one flatwasher and lockwasher. • The transformers are tested for partial discharge to Canadian Standards CAN 3-C13-M83. This test can also be carried out to IEC requirements if requested. • The core and coil assembly is encased in a plastic enclosure and vacuum encapsulated in polyurethane resin. • Thermal burden rating is for 120 volt secondaries. • Plated steel mounting base. • Fuses have 1.63" Dia. Caps and 11.50" clip centers. • A test card is provided with each unit. (a*) Voltage transformers connected line-to-ground cannot be considered to be grounding transformers and must not be operated with the secondaries in closed delta because excessive currents may flow in the delta. (b*) Two fuse transformers should not be used for Y connections. It is preferred practice to connect one lead from each voltage transformer directly to the neutral terminal, using a fuse in the line side of the primary only. By this connection a transformer can never be "alive" from the line side by reason of a blown fuse in the neutral side. For continuous operation, the transformer primary voltage should not exceed 110% of rated value. Use one fuse, one bushing models for Y applications. Use two fuse, two bushing models for delta applications. MODEL PTG5 SPECIFICATIONS ® E145172 ® LR89403 Note: It is recommended that the system line-to-line voltage not exceed the transformer insulation level. 7200 60:1 120 PTG5-1-110-722F 8400 70:1 120 PTG5-1-110-842F 12000 100:1 120 PTG5-1-110-123F 14400 120:1 120 ............PTG5-1-110-1442F TWO BUSHING (b*) PRIMARY SECONDARY CATALOG VOLTAGE RATIO VOLTAGE NUMBER 7200 60:1 120 ....PTG5-2-110-722FF 8400 70:1 120 .PTG5-2-110-842FF 12000 100:1 120 ........PTG5-2-110-123FF 14400 120:1 120 ........PTG5-2-110-1442FF SINGLE BUSHING (a*) Two Bushing X2 X1 H2 H1 One Bushing X1 X2 H1 H2 FEATURES 15KV CLASS
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karakter trafo
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POTENTIAL TRANSFORMERSP
OTE
NTIA
L TRA
NS
FOR
ME
RS
PHONE (614) 889-6152TECH. ASSISTANCE (614) 876-8308
FAX # (614) 876-85386625 McVey Blvd. Columbus, Ohio 43235Div. Morlan & Associates, Inc.
47
HIGH VOLTAGE POTENTIAL TRANSFORMER
Frequency ........................................................ 60Hz.
Standard Secondary Voltage ....................... 120VAC
Insulation Class ........... 15.5kV, BIL 110KV Full Wave
UL Recognized
FOR INDOOR USE ONLY
Accuracy Class0.3 WXMYZ, 1.2ZZ at 100% rated voltage with 120V basedANSI burden. 0.3 WXMY, 1.2Z at 58% rated voltage with 69.3 Vbased ANSI burden.Frequency ....................................................................... 60HzInsulation Class ...................... 15.5 kV, BIL 110kV Full WaveThermal Rating ................................... 1500 VA at 30OC Amb............................................................. 1000 VA at 55OC Amb.
Weight ...................................................Approximately 88 lbs.
Primary terminals that are fused are 1/4 - 20 brass screws with one flatwasher, lockwasher and two nuts. Secondary terminals are NO. 10-32 brass screws with one flatwasher and lockwasher. The transformers are tested for partial discharge to Canadian Standards CAN 3-C13-M83. This test can also be
carried out to IEC requirements if requested. The core and coil assembly is encased in a plastic enclosure and vacuum encapsulated in polyurethane resin. Thermal burden rating is for 120 volt secondaries. Plated steel mounting base. Fuses have 1.63" Dia. Caps and 11.50" clip centers. A test card is provided with each unit.
(a*) Voltage transformers connected line-to-ground cannot beconsidered to be grounding transformers and must not beoperated with the secondaries in closed delta because excessivecurrents may flow in the delta.
(b*) Two fuse transformers should not be used for Y connections.It is preferred practice to connect one lead from each voltagetransformer directly to the neutral terminal, using a fuse in theline side of the primary only. By this connection a transformercan never be "alive" from the line side by reason of a blown fusein the neutral side. For continuous operation, the transformerprimary voltage should not exceed 110% of rated value. Useone fuse, one bushing models for Y applications. Use two fuse,two bushing models for delta applications.
MODEL PTG5
SPECIFICATIONS
E145172
LR89403
Note: It is recommended that the system line-to-line voltage not exceed the transformer insulation level.
7200 60:1 120 PTG5-1-110-722F
8400 70:1 120 PTG5-1-110-842F
12000 100:1 120 PTG5-1-110-123F
14400 120:1 120 ............PTG5-1-110-1442F
TWO BUSHING (b*)PRIMARY SECONDARY CATALOG
VOLTAGE RATIO VOLTAGE NUMBER
7200 60:1 120 ....PTG5-2-110-722FF
8400 70:1 120 .PTG5-2-110-842FF
12000 100:1 120 ........PTG5-2-110-123FF
14400 120:1 120 ........PTG5-2-110-1442FF
SINGLE BUSHING (a*)
TwoBushing
X2X1
H2H1
OneBushing
X1 X2
H1 H2
FEATURES
15KV CLASS
-
POTENTIAL TRANSFORMERSP
OTE
NTI
AL
TR
AN
SFO
RM
ER
S
PHONE (614) 889-6152TECH. ASSISTANCE (614) 876-8308
FAX # (614) 876-85386625 McVey Blvd. Columbus, Ohio 43235Div. Morlan & Associates, Inc.
48
MODEL PTG5DIMENSIONS, ETC.
Recommended spacings are for guidance only. User needs to set appropriate values to assure performance for:high potential test; impulse test; high humidity; partial discharge; high altitude; and other considerations like configuration.
The circle diagram can be used topredict the performance of a transformerfor various loads and power factors. Aconvenient scale of volt-amperes isshown on the unity power factor line(u.p.f.) and commences at the zero orno-load locus. To use the diagram,measure the known V.A. and scribe anarc about the "zero" locus of a lengththat contains the angle of the burdenpower factor. The point at which thearc terminates is the error locus in phaseangle minutes and ratio correctionfactor.
B = HV To Ground In Air = 6.5" Min.A = Unit To Unit Or To Ground = 1.25" Min.
B A A BAB
1" x 2"Notch
InterruptingAmperes(SYM)
80,00080,00080,00080,000
Fuse For ModelPTG5 Transformer
7200:120V8400:120V
12000:120V14400:120V
RatingVolts
15.5kV15.5kV15.5kV15.5kV
Clip CenterInches11.5011.5011.5011.50
LengthInches
13131313
Cap Dia.Inches1.631.631.631.63
ContinuousAmperes
1.0E1.0E0.5E0.5E
Y
ZZ
Z
0100
200300
400
500600
700VA
0.1 p.f.
0.2 p.f.0.7 p.f.0.85 p.f.
u.p.f.
0.3 ACCURACY CLASS0.6 ACCURACY CLASS1.2 ACCURACY CLASS
Phase Angle, Minutes+60+50+40+30+20+100-10-20-30-40-50-60
0.996
0.998
1.000
1.002
1.004
1.006
1.008
1.010
1.012
Rat
io C
orre
ctio
n Fa
ctor
Circle Diagram
X1X2
TWO FUSE11.31
9.00
8.94
11.50
9.19
10.63
13.69
0.56H
1
(H2 Ht.)
10.75
X1X2
0.56
10.9413.06
ONE FUSE
4.06
0.62
11.50
13.1311.250.44
H2: 1/4-20 StudWith Lockwasher,Flatwasher AndTwo Nuts
2.00
H1
PTG5-1-110 DIMENSIONS PTG5-2-110 DIMENSIONS
RECOMMENDED SPACINGS
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