nader NDW3 Series Manual page 33

Reverse power protection
action/alarm features
(Accuracy of ±10%) inherent absolute
error: ±40 ms
Reverse power protection/alarm return
features
(Accuracy of ±10%) inherent absolute
error: ±40 ms
Reverse power protection alarm DO
output
Execution mode
Phase sequence protection/alarm NWK22/NWK32
Setting range of action phase sequence
Phase sequence protection alarm DO
output
Execution mode
Signal unit NWK21/NWK31 &NWK22/NWK32
NWK21/NWK31
Continued: Setting Values and Protective Features of Controller
Signal unit NWK21/NWK31 &NWK22/NWK32
Type of signal
NWK22/NWK32
Internal & confidential file
文件编号:NDT2920213
Reverse
value
≤0.9
≥1.1
Reverse power value/Setting value
≥1.1
≤0.9
The signal output is required to add a signal unit; set one DO of the signal unit as
"reverse power fault" output.
Without the signal output, observe the controller display screen or read from the
display indicator.
Alarm/tripping/close
Δφ: A, B, C / Δφ: A, C, B
The signal output is required to add a signal unit; set one DO of the signal unit as
"phase sequence protection/alarm fault".
Without the signal output, observe the controller display screen or read from the
display indicator.
Alarm/tripping/close
DO output
DO1
DO2
DO3
DO4
unit
S1 4DO (4 output contacts)
S2
3DO (3 output contacts) 1DI (1 input contact)
S3 2DO (2 output contacts) 2DI (2 input
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power value/Setting
General functions
Overload pre-alarm output
Grounding pre-alarm output
Fault tripping output
Short circuit instantaneous
action output
Rated current
contacts)
文件版本:17
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
Optional load
monitoring functions
Load monitoring 1
Load monitoring 2
Fault tripping output
Short circuit
instantaneous action
Field of Application
No regional interlocking
Regional interlocking between air circuit
breakers
Regional interlocking between air
circuit breakers
output