70
6
BR2
BR1
BR
NN
NC
NA
74 75 76 77 78 79 80 81
N1
N3
P1- -12
P1- -4
TS
69
15
P1- -15 P3- -3
NR
6
TS
TS
TS
COIL
P3- -2
P1- -5
+
- -
LN
LC
LA
NR
9
3
ER
7
4
46
P3- -4
P1- -16
TS
72
71
7
TS
P1- -3
33
P3- -6
NR
4
NR
7
1
ER
6
9
P3- -1 P1- -1
1
TS
8
9
P1- -2
P3- -5
TS
TS
EN
EC
EA
E1
E2
P1- -6
P1- -7
E1
E2
N1
N3
TS
16
18
P1- -14
P1- -10
P1- -13
63
18
17
16
J
116
R
W
GR
W
110
- -
+
10
61
118
177
C1
+
R2
Z1
R1
R5
117
4
3
2
1
5
7
8
R3
R4
SCR
R6
A
B
NR
N
ER
E
D1
D2
A
B
SW
NORMAL
EMERG.
7
9
3
4
P1- -8
P1- -9
58
57
ENGINE
START
TO TB6- -74
TO TB6- -75
TS
74 75 76 77 78 79
P1- -21
P1- -22
TB6
NT2
NT1
NT3
ET3
ET1
ET2
- -
+
CONTACTOR
TERMINAL
BLOCK
TO TERM. 58
TO TERM. 57
TO
EMERGENCY
SOURCE
TO
NORMAL
SOURCE
BR - - BRIDGE RECTIFIER
C# - - CAPACITOR
ER - - EMERGENCY RELAY
ET - - EMERGENCY TRANSFORMER
D# - - DIODE
NR - - NORMAL RELAY
NT - - NORMAL TRANSFORMER
P#- -- -# - - PLUG & SOCKET # W/PIN DESIGNATOR
R# - - RESISTOR
SW - - SWITCH
TB# - - TERMINAL BLOCK
TS - - TRANSFER SWITCH
- - INTERNAL COMPONENT CONNECTIONS
- - ASSOCIATED RELAY SOCKET TERMINAL
- - TERMINAL BLOCK TERMINAL #
- - TERMINAL BLOCK (TRANSFORMER)
- - TERMINAL BLOCK (MAIN LOGIC TRANSFORMER TERMINALS)
- - TERMINAL BLOCK (MAIN LOGIC)
- -#- - - - LEAD NUMBER
- - CONNECTOR
- - CAM OPERATED CONTACT
LEGEND
VOLTAGE
DETECTOR
TO LOAD
22
20
3
5
4
14
15
NT
62
A
B
5
2
67
99
ET
NOT USED ON
2 WIRE SYSTEMS
9
7
10
E
N
P1- -18
P1- -19
60
TDES
CONNECT
JUMPER
FOR TDES
TDES
(OPTIONAL)
17
9
7
All contacts shown with
transfer switch in Normal position.
Schematic Diagram
1-phase, 2-pole, 2- or 3-wire
320495
