JEP0-IL9416
8
2 Detailed
information
Using the COC4 – A01D1 overcurrent protection relay as a typical example, the following explains how to operate
this type of relay. The item numbers and details depend on model. See the section of “Operational procedure” of
the instruction manual of the model.
In this section, the lamp status of the indicator LEDs are shown according to the following rule using symbols:
Symbol
Lamp status
Simple indication
Numeric (7 segments) indication
Off
On
(Ex. : showing “8.8.8.8.”)
8.
8.
8.
8.
Blinking
(Ex. : showing “8.8.8.8.”)
8.
8.
8.
8.
【
A
】
Indication modes (Item No.: “000” ~ “900” range)
A - 1 Real time – measurement indication
<< Example >> Where data has been input as in A-, B-, and C-phases = 0.04 kA, Zero-phase = 0 A:
To check data input for each phase, follow the procedure below:
Operation
Step Description
Switch Press
Indication
1
The indication mode starts.
The A-phase current is indicated.
Ex. : A-phase current: 0.04 kA
IND./IND.END
Once
4
0
0.
0
1
0
Item No.
Item data
A-
phase
B-
phase
kA
A
C-
phase
Zero-
phase
2
The B-phase current is indicated.
Ex. : B-phase current: 0.04 kA
UP
Once
4
0
0.
0
1
0
Item No.
Item data
A-
phase
B-
phase
C-
phase
kA
A
Zero-
phase
3
The C-phase current is indicated.
Ex. : C-phase current: 0.04 kA
UP
Once
4
0
0.
0
1
0
Item No.
Item data
A-
phase
B-
phase
kA
A
C-
phase
Zero-
phase
4
The zero-phase current is indicated.
Ex. : Zero-phase : 0 A
UP
Once
0
0
0.
0
1
0
Item No.
Item data
A-
phase
B-
phase
kA
A
C-
phase
Zero-
phase
5
The indication mode ends.
IND./IND.END
Once
Item No.
Item data
A-
phase
B-
phase
kA
A
C-
phase
Zero-
phase
