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Page 93
TRANSFER SWITCH
SECTION 3.4
DIAGNOSTIC TESTS
PART 3
FUSE, 2AF3
GROUND LUG
LIMIT SWITCHES, ACTUATOR
RELAY, TRANSFER
UTILITY CIRCUIT BREAKER
NB - NEUTRAL BLOCK
LOAD SHED CONTROLLER
RELAY, LOAD SHED
LOAD SHED TRANSFER SWITCH CONTACTOR
XA1,XB1
TR
UCB
GND
LS
LSC
LSS
NB
SOLENOID COIL (LSS-OFF)
SOLENOID COIL (LSS-ON)
FUSE, 5A
TRANSFER SWITCH CONTACTOR
SOLENOID COIL (UTILITY CLOSING)
SOLENOID COIL (STANDBY CLOSING)
BATTERY CHARGER
F1,F2
C1
C1A
C2A
C2
ATS
BC
LEGEND
(C2A)
T2 T1
XB1
XA1
(C1A)
LSS
E2 E1
N2 N1
(C2)
T1 T2
ATS
XB1
E1
(C1)
XA1
N1
E2
N2
NB
WHT
CONNECTION
CUSTOMER
0
15B
23
S1
321
J6
1 2
J5
LSC
OUTPUT
RED
BLK
BC
6 565 4 4
TR
D2
8 7
A
9
B
D1
LS
7
A
9 8
B
2 13
1 432
13 2
F3
J4
6 75
CONTROLLER
LOAD SHED
1
J1
J3
00
INPUT
WHT
BLK
BLK
NON-ESSENTIAL
LOAD CONNECTION
OUTPUT CONNECTION
GENERATOR
T1
T2
E1A
A A
BB
1 2 3 54 6
C
D
E
A
B
H
G
I
K
J
F
Figure 14. Test 49, 50, and 51 “Load Shed Transfer Switch” Test Points.