EntelliGuard G
TM
Breaker Test Cabinet
Section 3. Description and Principles of Operation
The test cabinet, catalog no. GTC250 (Fig.1) is used to
operate an EntelliGuard G
TM
Drawout low voltage power
circuit breaker that has been removed from the metal-
enclosed equipment. It provides a convenient means of
accessing the electrical close and trip circuits of the
breaker during maintenance and inspection procedures.
Control voltages must match the rating of charge, close,
and trip circuits on the breaker.
This unit is designed to be wall or cabinet mounted. It has
a test connector (with green ground wire), a 10-foot wire
bundle, switches for opening and closing and charging
the breaker, and control power switch, all located on the
front of the cabinet.
Separate fuse holders and control power indicating lights
are provided for the charge, close, and trip circuits. Lights
are also provided for breaker open and close indication.
Inside the unit is a terminal block for connecting the
control power source(s) to the test cabinet. Four holes are
provided on the back of the test cabinet for mounting
using 3/8-inch hardware (mounting hardware is not
included).
1. Control power input holes
2. Terminal block for control power (inside)
3. Clamp for test connector cable
4. Fuse holders
5. Control power indicating lights
6. CLOSE/OPEN push button switches
7. Close & Trip control power OFF / ON switch
8. Green/Red indicating lights
9. Charging motor control power OFF / ON switch
Figure. 1. EntelliGuard G
TM
Test Cabinet
6
