nader NDW3 Series Manual page 31

Alarm return features of undervoltage
protection
(Accuracy of ±10%) inherent absolute
error: ±40 ms
Undervoltage protection alarm DO
output
Execution mode
Undervoltage protection/alarm NWK22/NWK32
Protection/alarm start setting value
V
Protection action delay time setting
value (s)
Alarm return setting
V
Alarm return delay time (s)
Undervoltage protection/alarm action
features
(Accuracy of ±10%)
Inherent absolute error: ±40ms
Undervoltage alarm return features
(Accuracy of ±10%) inherent absolute
error: ±40 ms
Overvoltage protection alarm DO
output
Protection execution mode
Voltage unbalance protection/alarm NWK22/NWK32
Protection/alarm start setting value
Protection action delay time setting
value (s)
Protection action return setting
value
Protection return delay time
(s)
Action features of voltage unbalance
protection/alarm
(Accuracy of ±10%) inherent absolute
Internal & confidential file
文件编号:NDT2920213
Umin/return setting value
＜0.9
≥1.1
The signal output is required to add a signal unit; set one DO of the signal unit as
"undervoltage fault".
Without the signal output, observe the controller display screen or read from the
display indicator.
Alarm/tripping/close
Return value~1200
0.2~60
value
100~start value
0.2~60
Umin/action setting value
≤0.9
≥1.1
Umin/return setting value
≥1.1
≤0.9
The signal output is required to add a signal unit; set one DO of the signal unit as
"Overvoltage fault".
Without the signal output, observe the controller display screen or read from the
display indicator.
Alarm/tripping/close
2%～30%
0.2~60
2%～start value
0.2~60
Actual voltage unbalance
rate/setting value
≤0.9
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文件版本:17
Tripping time
Non-return
Returns according to the set delay time
Tripping time
Inaction (no alarm)
Acts (or gives an alarm) according to the set
delay time
Tripping time
Non-return
Returns according to the set delay time
Tripping time
Inaction (no alarm)