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8. Wiring diagram of Control Circuit **
This diagram is based on "Opening" of circuit breaker,
de-energized and normal condition of Trip relay.
Main circuit
Terminal code description
Voltage trip Device (SHT)
C1
C2
Under Voltage Trip (UVT)
D1
D1
Control power of Trip relay
R1
R2
Rely output for trip reason
513
544
~
Remote reset of relay output
R11
R22
RS - 485 communication
485+
485-
Note) 1) The diagram is shown with "Opening" position of circuit breaker, de-energized and normal condition of Trip relay.
2) Please consult us for the use of ZSI (Zone selective Interlocking).
3) Refer to the catalogue for the connection of Trip relay and ZCT input terminals (E1,E2).
4) UVT and SHT can not work together at the same time.
** If equipped - Functions dependant on OCR Trip unit type
Installation Instructions
Voltage Module
ZCT
V1
V2
V3
VN
E
1
Z
3
1
1
485+
Trip relay
E2
Z4
Z2
485-
Digital trip relay
ZSI input
Z1
Z2
ZSI output
Z3
Z4
ZCT INPUT
E1
E2
Voltage Module
VN
V3
~
Power supply
R11
R22
513
R
2
R
1
D
1
C1
UVT
SHT
or
544
534
524
D2
C2
UVT
SHT
Symbol and DESCRIPTIONS
AUX/ALM
LTD
STD/Inst
GTD
SHT
UVT
- 12 -
Internal/External wiring(by customer)
Connector of the control
circuit terminal of drawout type
ALb
ALa
a
AXb AX
AXb
AX
AXb
AX
AXc
AXc
AXc
ALc
Auxiliary Switches (AUX1, AUX2, AUX3)
ALM
Auxiliary switch , Alarm switch
Long time delay trip indicator
Short time delay/instantaneous STD/Inst
Ground fault trip indicator GTD
Voltage trip Device (SHT)
Under Voltage Trip (UVT)
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