Instrument Transformer, Div of GE JAD-0W Encompass Data Sheet

GE

insulated primary conductor, refer to the Applications Information

Grid Solutions

MODEL JAD-0W EncompassTM

Revenue Metering Current Transformer

Application

EncompassTM is an extended range revenue metering current
transformer. Model JAD-0W is designed for both indoor and
outdoor service. Suitable for operating meters, instruments and
control devices. For use on higher voltage circuits with an

section of catalog GEP-9186.

Features

 Voltage Class: 0.6 kV

 Frequency: 50-60 Hz

 Window Size: 5.75”

 Insulation Level: 10 kV BIL

 Application: Indoor/Outdoor

Benefits

 Light load test points extended beyond IEEE requirements plus

high rating factors allow for one Encompass unit to functionally
replace multiple standard ratios

 Simplify CT selection and billing multipliers, improving

productivity and minimizing risk of error

 Reduce inventory and part number requirements, reducing

asset and operational costs

(1) Exceeds IEEE definition for standard revenue metering accuracy. Maintains 0.6 Accuracy Class from 4% to 40% of rated current and 0.3 Accuracy Class from 40% through
Rating Factor.
(2)Primary-baroptionsavailable,uponrequest. ContactGEformoredetails.
(3) Other designs available, upon request. Contact GE for more details.

Weight

water absorption and is resistant to oil and a variety of chemicals.

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

The terminal cover is made of a clear plastic. Provision is made for

The transformer can be mounted in any position. An optional base

Transformer, Window Type 13 lbs
Primary Bar, add 4 lbs
Mounting Base, add 2 lbs

Reference Drawings

Outline 0121C34994
Primary Bar Assembly 0821C35021
Base Assembly 0221A36647

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

The polyurethane resin filling completely encapsulates 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

shorting device is provided and interlocked to the terminal cover.

sealing the cover.

Polarity

Primary and secondary polarity marks H1 and X1 are molded into
the case.

Nameplates

The nameplate is laser engraved aluminum and is attached to the
top of the unit. The nominal current rating is marked on both
sides of the unit in large numerals.

Primary Conductor

Removable primary bars are formed from 1/4”x 4”tin-plated, flat
copper bar, with 1/4”spacing between bars on multiple bar
assemblies. The bars are retained by insulated and ventilated end
caps, which permit the bars to be rotated to any desired
orientation and allow the transformer to be supported in a
vertical primary arrangement. A potential connector is provided
adjacent to one end cap. Primary bars are available in 11 7/8”and

14 1/4”lengths, each provided with four bolt holes at each end.

Baseplate and Mounting

plate is available, made of stainless steel. It is attached to the

transformer with two bolts.

Maintenance

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

Grid-AIS-L4-ITI_Model_JAD_OW-1385-2017_10-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.