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EOCR-i3BZ/iFBZ/3BZ2/FBZ2
EOCR-i3BZ / iFBZ : Intelligent Digital Over-Current, Earth Fault Relay with built-in ZCT,
EOCR-3BZ2 / FBZ2 : Economic Digital Over-Current, Earth Fault Relay with built-in ZCT
Wiring Examples
EOCR-i3BZ/iFBZ
OL : b, GR : a
EOCR-i3BZ/iFBZ
OL : 1a 1b, GR : 1a
3 phase line Diagram
3 phase line Diagram
3 phase line Diagram

Single line Diagram Single line Diagram

DM
EOCR
-iFBZ
MODBUS 485 MODBUS 485 MODBUS 485 MODBUS 485 MODBUS 485
DM
EOCR
-iFBZ
DM
EOCR
-iFBZ
DM
EOCR
-iFBZ
DM
EOCR
-iFBZ
MCCF-A1-RF
MCCF-B1-RF
FROM : BUSDUCT
P.T×3
380/110V
DM MAIN
MCCB
C.T Y-△Y-△Y-△
F
DM
EOCR
-FBZ2
DM
EOCR
-FBZ2 EOCR
-FBZ2 EOCR
-FBZ2 EOCR
-FBZ2
DM DM DM
MCCF-A1-RF
MCCF-B1-RF
FROM : BUSDUCT
P.T×3
380/110V
DM MAIN
MCCB
C.T
F
Y-△Y-△Y-△

Single phase line Diagram

Caution
1. Do not use any External CT
2. Earth fault detection by built-in ZCT
Caution
1. Do not use any External CT
2. Earth fault detection by built-in ZCT
Caution
1. Do not use any External CT
2. Earth fault detection by built-in ZCT
Caution
1. Do not use any External CT
2. Earth fault detection by built-in ZCT
EOCR-i3BZ/iFBZ
OL : 1a 1b, GR : 1a
EOCR-iFBZ EOCR-FBZ2
EOCR-i3BZ/iFBZ
OL : b, GR : a