Alternate Control Circuit 1 - GE AKR-30 Series Maintenance Manual

ALTERNATE CONTROL CIRCUIT USED
5.2.1
A second type of electrical control is shown in Fig . 9A
for all control voltages except 250 volts D.C. which uses
the circuit shown in Fig . 9. This alternate control c i rcuit
eliminates the X-relay and CC switch shown in Fig. 9.
The motor is energized through the "G" cutoff switch
and the K-relay contact. The motor is deenerg ized when
the "G" cutoff switch changes state wh ich occurs when
the closing spring is fully charged.
With the c losi ng spring propped ful ly-ch arged, the
breaker is ready for c losing. Th is may be accompl ished
electrically by closing the "PB" switch on f he breaker (if so
CONTROL
SOURCE
FIG. 9A. ALTERNATE ELEM ENTARY DIAG RAM . CONTACT POSITIONS ARE
SHOWN BREAKER OPEN A N D CLOSING SPRINGS DISCHARG ED.
1 2
REMOTE
CLOSE
TC
TYP #183 L7 1 2 "B" SERIES
equipped) or by a remote closing switch. Operation of the
closing switch energizes the K-relay, which in turn ener­
g izes the closing solenoid "CC". This removes the p rop,
releasing the closing s prings to close the breaker. The "F"
cutoff switch is only installed on breakers using D.C.
control voltage.
The anti-pum p function is obtained through the nor­
mally closed K-relay contact i n the motor c i rcuit. If a
close signal is mai ntained after the breaker has tripped
open automatical ly, the K-relay is energ ized preventing
the motor from charg i ng the closing spring. The closing
signal must be removed for approxi m ately 1 .3 to 2.0
seconds to al low the closing spri ng to charge.
LEG E N D
-
C C CLOSING SOLENOID
-
F
CUTOF F SWITCH, CLOSED
W H EN CLOSING S PRI NG IS
FU LLY CHARGED (D.C. O N LY)
G
- CUTOF F SWITCH, OPEN
W H EN CLOSING SPRING IS
-
FULLY CHARGED.
L
AUXI LIARY SWITCH
M
- CHARG I N G MOTOR
CLOSE PUS H B UTION O N
PB -
BREAKER ESCUTCH EON.
-
O PTIONAL
TC
SHUNT TRIP DEVICE
K - ANTI-PU M P R ELAY