18
Electronic Motor Protection Relays
Display information
Failure state
Additional display information
Remarks
Failure
information
Overcurrent
Fault current (R-phase, S-phase and T-phase)
Load factor, time
Operates at the set time
Lock
Fault current (R-phase, S-phase and T-phase)
Load factor, time
Operates within 0.5sec
Stall
Fault current (R-phase, S-phase and T-phase)
Load factor, time
Operates in 3sec
Phase fail
Fault current (R-phase, S-phase and T-phase)
Load factor, time
Operates in 3sec
(Delay time setting needed)
Phase unbalance
R-phase, S-phase and T-phase,
Unbalance factor, time
Ooperates in 5 sec
(Delay time setting needed)
Reverse phase
Time
Operates at the set time
Under current
Fault current (R-phase, S-phase and T-phase)
Load factor, time
Operates in 3sec
Ground fault (ZCT)
Fault current (R-phase, S-phase and T-phase)
N-phase, time
Operates at the set time
(Delay time setting needed)
Instance
Fault current (R-phase, S-phase and T-phase)
Load factor, time
Operate within 50ms
(Delay time setting needed)
Alarm
information
Set operating time has
elapsed
An alarm is displayed if a cumulative running time
excesses a set running time
Self-
diagnosis
information
Display
communication error
When a communication error occurs between the display and
body, please contact our office with the alarm maintained.
External memory error
When there is an error in the backup memory,
please contact our office with the alarm maintained.
Operation
&
setting method
Information display
R
C
50%
120%
A
%
S
T
N
R
C
50%
120%
A
%
S
T
N
R
C
50%
120%
A
%
S
T
N
R
C
50%
120%
A
%
S
T
N
R
C
50%
120%
A
%
S
T
N
R
C
50%
120%
A
%
S
T
N
R
C
50%
120%
A
%
S
T
N
R
C
50%
120%
A
%
S
T
N
R
C
50%
120%
A
%
S
T
N
Current Circulation Display
Measuring
Group
Flashing
Flashing
Flashing
Menu
Parameter
CORRECT
※ It is displayed cyclically every 2 seconds.
Cyclic display by key operation
※ Password window popup when changing
※
After saving, it lights after input
R
S
T
N
R
S
T
N
R
S
T
N
Current
R
Current
S
Current
T
Menu configuration
7. Three-phase current circulation display
1) Three-phase operating current that automatically circulates is displayed at intervals of 2 seconds.
2) To view a specific phase on the circulation display, press Enter in relation to such phase for 2 seconds. The phase will flicker and be displayed.
3) If you want to display the circulating three-phase current again, use the Up or Down key to cancel the state for circulation display.
Measuring
Group
Menu
Parameter