GE Industrial Solutions EntelliGuard 3200–5000 A Frames, 240–600 Vac - Manual (Page 14)

EntelliGuard™ 3200–5000 A Power Circuit Breakers
Chapter 3. Breaker Operation
6
3.1 Operating Instructions
Sequence of Operations
The sequence of operations that may be performed on the
circuit breaker are listed in Table 2. Refer to Chapter 4 for
information about accessory operation.
Operation of the Breaker
Manually Charging the Mechanism Springs
Pull the charging handle down about 90° (until it stops)
eight times to fully charge the springs. This will not close
the breaker contacts . The charge indicator will show
CHARGED on a yellow background.
NOTE: The breaker cannot be closed unless
the springs are fully charged and the handle is
stored fully in.
NOTE: Le disjoncteur ne peut être fermé à
moins que les ressorts ne soient pleinement
chargés et que la poignée ne soit pleinement
rentrée.
Electrically Charging the Mechanism Springs
If the breaker is equipped with the (optional) Charging
Motor, the mechanism springs may also be charged with
any of the following methods:
• With the breaker in the TEST position, install the
Charging Motor fuse in the fuse holder in the upper
left corner of the breaker compartment.
• Operate the Charging Motor by applying the rated
voltage to secondary disconnect terminals 8 and 17.
Power to the motor is removed automatically by a
cutoff switch when the springs are fully charged.
• If power is lost during the charge cycle, finish
charging the springs by cycling the charging handle
until the indicator shows CHARGED on a yellow
background.
The closing springs will automatically recharge after clos-
ing if control power is maintained at terminals 8 and 17.
Closing the Breaker
Close the breaker contacts with any of the following
methods:
• Depress the CLOSE button on the front of the
breaker.
• Close the breaker using the Entellisys™ HMI.
• Energize the (optional) Remote Close accessory by
applying the rated voltage to secondary disconnect
terminals 9 and 18.
If the breaker is closed electrically and the closing voltage
is maintained, an antipump device prevents a second
closing operation on the breaker in the event it is tripped
OPEN . The closing impulse must be released for 1 to 2.5
seconds and reapplied before a second closing operation
can occur.
If the closing voltage is applied while the closing springs
are not fully charged, the Remote Close coil energizes, but
operation of the closing mechanism is blocked. The
closing voltage must be removed and reapplied when the
springs are fully charged to close the breaker.
A mechanical interlock prevents the closing springs from
discharging if an attempt is made to close an already
CLOSED breaker.
NOTE: The main breaker contacts cannot be
closed if any of the following conditions
applies:
• The draw-out mechanism is in any posi-
tion other than TEST or CONN , as dis-
played on the breaker position indicator.
• The (optional) Bell Alarm with Lockout
was not reset after an overcurrent lockout
and the breaker is in the CONN position.
• The (optional) Open Fuse Lockout was
not reset after replacement of a blown fuse.
• The (optional) Network Interlock was not
reset after a set operation.
These conditions must be corrected before the
breaker can be closed. Attempts to close the
breaker before these conditions are corrected
may result in discharge of the closing springs
without closing the main contacts.
Open/Closed
Indicator
Main Breaker
Contacts
Charge
Indicator
Condition of
Charging Springs
Next Permissible
Operating Function
OPEN Open DISCHARGED Discharged Mechanism may be charged
OPEN Open CHARGED Charged Contacts may be closed
CLOSED Closed DISCHARGED Discharged
Mechanism may be recharged or
Contacts may be opened
CLOSED Closed CHARGED Charged Contacts may be opened
Table 2. Sequence of operations that may be performed with the EntelliGuard circuit breaker.