Instrument Transformer, Div of GE JAB-AC Data Sheet

GE

Energy Connections

Model JAB-AC

Indoor Current Transformer 600 V, 10 kV BIL, 200-3,000 A
Window Size 4.50” X 3.50

Application

Designed for indoor service; especially designed for installation over the secondary
bushings of pad mounted transformers from 75 kVA to 3,000 kVA. For mounting and
application information, including use at higher voltages, and matching the current rating
to the pad transformer thermal capability, please refer to the Applications Information
section of catalog GEP-9186.

Weight

Approximately .......................8.25 lbs

Reference Drawings

Outline .................0121C33851

Insulation Level

0.6 kV; BIL 10 kV full wave

Frequency

50-60 Hz

Notes:



A high temperature version is available for use in locations with unusually high ambient temperatures.

Consult factory for base plate provisions.

chemicals. The polyurethane resin filling completely encapsulates

JAB-AC Dimensions

Construction and Insulation

The core and coil assembly is encapsulated in resin within a
molded case. The case is molded with GE Valox thermoplastic
polyester resin. This tough material has excellent electrical and
mechanical properties over a wide temperature range, has low
water absorption and is resistant to oil and a variety of

the winding, leads and terminals to form a waterproof unit.

Core and Coils

The core is made from high quality grain oriented silicon steel,
annealed under rigidly controlled factory conditions. The
secondary winding is made of heavy enameled copper wire. The
secondary windings are evenly distributed around the core for
maximum accuracy and resistance to stray fields from adjacent
conductors.

Terminals

Secondary terminals are tin plated brass, compression type with
a 0.275” diameter cross-hole for wiring and a 1/4-28 clamp
screw. A shorting device is provided and interlocked to the
terminal cover. The terminal cover is made of a clear plastic.
Provision is made for sealing the cover.

Polarity

Primary and secondary marks H1, H2 and X1, X2 are molded into
the case. In addition, H1 and X1 are identified by white dots.

Primary Conductor

These transformers are primarily intended for installation over
the bushing and terminal blade of pad mount transformers,
which then forms the primary conductor.

Nameplates

The nameplate is laser engraved aluminum. It is attached to the
side of the unit and has provision for attaching the user’s
identifying tag. The nominal current rating is on both faces of the
unit in large numerals.

Mounting

The transformer can be mounted in any position but is usually
installed on the pad mount tranformer terminal blade using the
“grabbers”. The transformer also has two mounting holes
allowing it to be attached to a mounting bracket.

Maintenance

These transformers require no maintenance, other than
occasional cleaning, if installed where air contamination is severe.

Grid-AIS-L4-ITI_Model_JAB-AC-1380-2017_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.