Transfer To Standby - Generac Power Systems 10 kW LP Repair Manual

TRANSFER SWITCH
When the standby coil is energized it pulls the transfer switch mechanism to a overcenter position towards the
standby power source side, the transfer switch mechanically snaps to the standby position. On closure of the
main contacts to the standby power source side, limit switches SW2 and SW3 are mechanically actuated to "arm"
the circuit for re- transfer to utility power source side.
Generator power from E1 and E2 is now connected to the customer load through T1 and T2.
E1
N1A
-
+
BLK
RED
WIRE
WIRE
BC
B
B
N2A
A
LEGEND
BC-BATTERY CHARGER
C1-UTILITY COIL & RECTIFIER
C2-GENERATOR COIL & RECTIFIER
F1,F2,F3-5A, 600V FUSE
LC-CIRCUIT BREAKER (LOADS)
(16 CIRCUIT SHOWN FOR REFERENCE ONLY)
N-NEUTRAL
SW1-AUTOMATIC TRANSFER SWITCH
SW2,SW3-LIMIT SWITCHES
TB1-TERMINAL STRIP
TR1-TRANSFER RELAY
Part 3

tranSFer to StandBy

15B
E1
N1A
A
7 7 9 9
TR1
1 4 3 6
B
23
126 205
N2A
N1A
N1A
N2A
205
B
N1A
126
N2A
NO NC NC NO
SW3
SW2
COM COM
VR1 VR2
C1 C2
T1 T1 T2
SW1
N2A
B E2
F3
T1
B E2
Figure 6. Generator Powering Load.
0
15B 15B
23 23
F2
N2
F1
N1A
E1
E2
E1
E2
NEUTRAL
CONNECTION
INSIDE
SWITCH
E1
CIRCUIT 14
E2
E2 CIRCUIT 13
CIRCUIT 10
CIRCUIT 9
CIRCUIT 6
CIRCUIT 5
CIRCUIT 2
T1 CIRCUIT 1
T2 CIRCUIT 3
CIRCUIT 4
CIRCUIT 7
CIRCUIT 8
CIRCUIT 11
CIRCUIT 12
CIRCUIT 15
CIRCUIT 16
UTILITY
LC
DC
GROUND
GENERATOR
sEctioN 3.2
oPEratioNal aNalYsis
0 0
CONTROL
15B
TRANSFER
23
N2
UTILITY
SENSING
240VAC
N1 N1 OUTPUT
E1 BLACK
TO GENERATOR
RED
OUTPUT
NEUTRAL (WHITE)
GROUND (GREEN)
GROUND (GREEN)
NEUTRAL (WHITE)
240VAC TO
RED (MAIN 2)
MAIN DISTRIBUTION
PANEL
BLACK (MAIN 1)
TS TO
GENERATOR
CONTROL PANEL
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