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2.7
-
-
24V+
Electronic Trip Unit
A27
A28
A29
A30
Relay O/P1
Relay O/P2
24V+
Electronic Trip Unit
A31
A32
A36
A37
24V-
N-RC
N-RC
+
-
+24-
VDC
Mpro
-S
A31
A32
A36
A37
24V-
N-RC
N-RC
+
-
+24-
VDC
Mpro
-N
-
-
Connection scheme
-
-
-
-
B1
B2
B3
-
Relay I/P
Connection scheme
V-C
V-B
V-A
GND
B39
B38
B37
Abbrevia ons Connec on scheme:
24V+/24V-:
AUXILIARY POWER SUPPLY TO TRIP UNIT
N-RC:
NEUTRAL ROGOWSKI COIL
ZSI OUT:
ZONE SELECTIVE INTERLOCK OUT
ZSI IN:
ZONE SELECTIVE INTERLOCK IN
RXD:
MODBUS COMMUNICATION
TXD:
MODBUS COMMUNICATION
RELAY O/P:
RELAY OUT PUT
RELAY I/P:
RELAY IN PUT
V-A/V-B/V-C:
SIGNAL INPUT FROM VOLTAGE CONDITIONER
(L1-L2-L3)
GND:
GROUND FOR VOLTAGE
TRIP UNIT
B27
B28
B29
-
-
ZSI
ZSI
ZSI
OUT+
OUT-
IN+
-
TX
RX
-
-
B35
B34
B27
B28
B29
-
-
ZSI
ZSI
ZSI
OUT+
OUT-
IN+
-
TX
RX
-
B36
B35
B34
2
.7
B30
ZSI
IN-
-
B30
ZSI
IN-
-
2.6-02
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