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GE
Energy Connections
Model 190 Wound Primary and
Model 190X Auxiliary Transformer
Current Transformers
Frequency
50-400 Hz.
Insulation Level
0.6 kV, BIL 10 kV full wave.
Continuous Thermal
Current Rating Factor
1.33 at 30 °C. amb., 1.0 at 55 °C. amb.
Terminals are brass studs No. 8-32 with
one flatwasher, lockwasher and regular
nut,for ratios up to 25:5 and 1/4-20
studs for higher ratios.
Order mounting bracket kit No.
0221B00777
Approximate weight 4 lbs.
The Model 190 is a low ratio primary current transformer, suitable for primary currents up to 50 amperes. The table below lists the most common current ratings.
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Model 190 Wound Primary & 190X Auxiliary Transformer
ANSI Metering Class: 0.3 B0.5
The Model 190X is an auxiliary transformer for use in the secondary of main current transformers to change the ratio for metering
applications. Since the Model 190X is used in the secondary of another current transformer it has no voltage rating. It is given a 2,500 volt
60 Hz high potential test. It is designed to be used on circuits not to exceed 600 volts to ground or between windings.
** The circuits of up to five secondaries may be totalized. Equal or unequal line current transformers can be summed
with this transformer. Advise the ratios of the line current transformers to be totalized for unequal ratios. Output
terminals are X1-X2.
Grid-AIS-L4-ITI_Model_190-1270-2017_05-EN. © Copyright 2017. General Electric Company
and Instrument Transformers LLC reserve the right to change specifications of described
products at any time without notice and without obligation to notify any person of such changes.
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