Because it is used in the secondary circuit
GE
Grid Solutions
Model JAR-0C
Indoor Current Transformer 600 V
Auxiliary Current Transformer
Application
Designed for indoor service; for connection in the secondary circuit of a main current
transformer to change the effective ratio seen by meters and relays. It’s accuracy is
suitable for use with totalizing meters and relays. It is designed for use on circuits not
exceeding 600 V to ground.
Regulatory Agency Approvals
UL Recognized File E93779
Weight
Transformer (approximate) 10 lbs
Reference Drawings
Outline 0121C33696
Insulation Level
of another transformer, it has no voltage
rating. These transformers receive a
60 Hz, 2.5 kV high potential factory test
between each winding and between the
windings and ground.
Frequency
50-60 Hz
Refer to factory
Common ratios are listed in the data table; other ratios are available, consult factory.
* Up to six secondary currents can be totalized. Equal or unequal line current transformers can be summed with these transformers. Consult factory with the ratios of the line current
transformers to be totalized.
** Exception: These Ratio Numbers have no accuracy ratings
JAR-0C Dimensions
Construction and Insulation
The core and coil are encapsulated in a polyurethane resin.
This material has excellent electrical and mechanical properties
over a wide temperature range and is resistant to oil and a variety
of chemicals.
Core
The core is made from high quality grain oriented silicon steel,
annealed under rigidly controlled factory conditions.
Coils
The primary and secondary windings are made of heavy enameled
copper wire evenly distributed around the core for maximum
accuracy.
Terminals
Both primary and secondary terminals are 10-32 binding head
screws, located on the top of the transformer. Primary and
secondary terminals are at opposite sides of the case.
Polarity
Primary and secondary polarity terminals are identified with
molded characters on top of the transformer case. Multiple
secondary windings are marked 1H1, 2H1, etc.
Nameplates
The nameplate is made of polyester material and is attached to
the side of the case.
Baseplate and Mounting
The base plate is made from plated steel. The transformer may be
mounted by its base plate in any desired position.
Maintenance
These transformers require no maintenance, other than
occasional cleaning, if installed where air contamination is severe.
Grid-AIS-L4-ITI_Model_JAR_0C-1393-2017_07-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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