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S260-75-1
11
!
SAFETY
FOR LIFE
20
191817161514131211
10
9
8
7654321
Z
Y
X
G
2G1CBA
20
191817161514131211
10
9
8
7654321
22
21
A
A
B
C
D
E
F
G
H
J
K
B
C
D
E
F
G
H
J
K
L
L
M
N
P
R
S
T
U
V
M
N
P
R
S
T
U
V
A
A
B
C
D
B
C
D
E
E
F
G
H
F
G
H
GFEDCBA
GFEDCB
A
GFEDCBA
GFEDCB
A
KJH
KJH
TSRPNML
TSRPNM
L
VU
V
U
TB2
TB6
TB5
"PT"
"PT"
"SW"
"SW"
S CONTROL
TRANSFER SWITCH OPERATORS
POTENTIAL SENSING TRANSFORMERS
LOAD TAP
TYPE CI SWITCH
SOURCE I
SEE INSERT FOR
INTERNAL
CONNECTIONS
NOTE: FOR SINGLE-PHASE SENSING
JUMPER TERMINAL A TO B TO C AND
TERMINAL X TO Y TO Z ON TB2
INTERNAL CONNECTION DIAGRAM:
C-INTERRUPTER # 1
SOURCE I AND SOURCE II MUST
PRESENT THE SAME PHASE
ROTATION TO THE LOAD.
SOURCE II
POTENTIAL
SENSING
TRANSFORMERS
500 VA MIN
120 VAC, 60 HZ
SECONDARIES
SEE INSERT
FOR INTERNAL
CONNECTIONS
INTERNAL CONNECTION DIAGRAM:
C-INTERRUPTER # 2
POTENTIAL
SENSING
TRANSFORMERS
500 VA MIN
120 VAC, 60 HZ
SECONDARIES
LS3
(NC)
8
7
65
4
3
2
1
9
10
TSRPNML
V
U
TRIP
COIL
R
M
CLOSE
COIL
LS2
(NO)
LS2
(NC)
LS3
(NO)
LS1
(NC)
LS4
(NC)
LS4
(NO)
KEY:
NC = NORMALLY
CLOSED
NO = NORMALLY
OPEN
M = MOTOR
R = RESISTOR
TYPE CI SWITCH
LS3
(NC)
8
7
65
4
3
2
1
9
10
TRIP
COIL
R
M
CLOSE
COIL
LS2
(NO)
LS2
(NC)
LS3
(NO)
LS1
(NC)
LS4
(NC)
LS4
(NO)
GFEDCBA
J
H
K
N
A
B
C
N
X
Y
Z
Figure 7.
Connection diagram for Type S load-transfer control operating the Type PST-6 switch. (The transformer cutouts,
tap fuses, reclosers, and arresters are not shown.)