GE Industrial Solutions Entellisys Installation - Manual (Page 59)

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Entellisys Low Voltage Switchgear
Chapter 7. Operating the Switchgear
7-1 Circuit Breaker Operation
General
Included below are abbreviated operating instructions for
EntelliGuard circuit breakers. Before activation of the circuit
breakers or operation of the switchgear equipment,
thoroughly read, and be familiar with, the circuit breaker
manuals that will be supplied as supplementary information
to this manual. Publication numbers are: DEH-201 and
DEH-202.
Manually Operated Breakers
Closing Manually Operated EntelliGuard Circuit
Breakers
Manually operated EntelliGuard breakers are equipped with
an integral charging handle and a push button marked
CLOSE on the front of the escutcheon. The spring must be
charged first.
1. FOR EG-08/16/20 BREAKERS - A complete charge is
accomplished by pulling the handle down about 90°
(until it stops) five-six times to fully charge the closing
springs. This will not close the breaker contacts. The
charge indicator will show CHARGED on a yellow
background.
2.
FOR EG-32/40/50 BREAKERS - These breakers require
the handle to be pulled down eight times to fully charge
the springs. The charge indicator will show CHARGED
on a yellow background.
Opening Manually Operated EntelliGuard Breakers
A mechanically operated, double insulated open button,
mounted on the breaker escutcheon, operates the trip shaft to
open the breaker. The breaker many also be opened by the
Entellisys HMI.
Electrically Operated Breakers
The breakers may be closed by a mechanically operated, double
insulated push-button switch on the breaker escutcheon or by the
Entellisys HMI. Fuses are located in the breaker compartment,
just behind the door.
Electrically Opening EntelliGuard Breakers
Electrically operated EntelliGuard breakers are equipped with
both a shunt trip and a flux shifter for opening the breaker. A
normally open auxiliary switch “A” contact opens the shunt trip
control circuit after the breaker opens, preventing damage to the
device. The shunt trip and flux shifter operate in response to
OPEN and TRIP commands, respectively, from the HMI
breaker control screen.
7-2 Circuit Breaker Drawout
Operation
Breaker Positions
Refer to Fig. 7-1. The drawout operation features four
positions:
1. CONNECT - In the CONNECT position, the primary
and secondary disconnects are fully engaged. The
breaker must be opened before it can be racked out of
this position.
2.
TEST - When in the TEST position, the primary
contacts are disconnected, but the secondary contacts
remain engaged. This allows complete breaker
operation without energizing the primary circuit.
3.
DISCONNECT - In the DISCONNECT position, neither
primary or secondary contacts are made. Breakers may
be racked between these three positions with the
compartment door closed and latched.
4.
WITHDRAWN - With the door open, the breaker can be
rolled out manually from the DISCONNECT to the
WITHDRAWN position. Here, the breaker is
completely out of its compartment, ready for removal.
Fig. 7-1. EntelliGuard circuit breaker
Shown in DISCONNECT position