GE Industrial Solutions EntelliGuard G - Manual (Page 21)

DEH-41304C EntelliGuard® G Circuit Breaker
13 March 14 Section 4 – Operation
©2012 General Electric All Rights Reserved 21
CLOSING SPRING DISCHARGE PROCEDURE (Table 4.2)
The main spring may be discharged (also known as
“crashing the mechanism”) without closing the breaker by
using a special tool operated through a small window on
the front cover.
One of the following safety-related capabilities should be
provided per the applicable ANSI standard:
 Drawout version only:
-
ANSI versions: The mechanism closing springs
are automatically discharged (crashed) when the
circuit breaker is moved from the DISCONNECT
position to the WITHDRAWN fully disconnected
position and vice versa.
- UL and IEC versions. The automatic spring
discharge feature is optional.
 Fixed-mounting and drawout versions:
-
The front cover has a label indicating the
position of the hidden spring charged indicator
button and clearly indicates that the springs
must be discharged prior to any maintenance
activity or circuit breaker disassembly.
The closing springs must be discharged prior to removal
of the arc-chute cover.
CLOSING PROCEDURE
 Pull the charging handle out and down to charge the
closing springs (requires approximately 10 pumps of
the handle to fully charge).
 If a motorized spring charging unit is installed, the
springs will be automatically charged as soon as the
motor is energized.
 Pressing the ON pushbutton or energizing the
closing coil (if installed) will close the circuit breaker.
CONDITIONS WHEN CLOSING CANNOT OCCUR
 The OFF button is in a depressed position.
 The trip unit is not installed.
 If racking handle is inserted, remove it.
 The breaker is positioned anywhere between
CONNECTED, TEST and DISCONNECTED positions.
 Trip unit reset button is protruding from the front
cover. Press the reset button.
 An under voltage release is installed but not
energized.
 A key interlock (Ronis, Profalux, Castell, etc.) or direct
inter-breaker mechanical interlock is operating on
the breaker.
CIRCUIT BREAKER OPENING PROCEDURE
 Press the OFF pushbutton or energize the shunt trip
coil (if installed).
 Tripping under fault conditions will be automatic
depending on the protective device installed and its
settings.
Table 4.2. Cassette Operating Positions
Circuit Breaker
Position in the
Cassette
Primary
Disconnects
Secondary
Disconnects
Circuit Breaker Functionality Circuit Breaker
Door Position
CONNECTED engaged engaged  circuit breaker may be operated both mechanically or electrically
 ready for service
closed
TEST disengaged engaged  circuit breaker may be operated both mechanically or electrically
 circuit breaker and control circuit operations may be tested and
verified
closed
DISCONNECTED disengaged disengaged  circuit breaker may be operated only mechanically
 circuit breaker may not be removed from the circuit breaker
compartment
closed
WITHDRAWN disengaged disengaged  circuit breaker may be operated only mechanically
 circuit breaker may be removed from the circuit breaker
compartment
open