ABB RELION REX640 - 4.5.5.7 Signals; NSPTOV Input signals; NSPTOV Output signals; 4.5.5.8 NSPTOV Settings

An appropriate value for the setting parameter Voltage start value is approximately
3 percent of U
n
. A suitable value for the setting parameter Operate delay time
depends on the application. If the NSPTOV operation is used as backup protection,
the operate time should be set in accordance with the operate time of NSPTOC used
as main protection. If the NSPTOV operation is used as main protection, the operate
time should be approximately one second.
4.5.5.7 Signals
NSPTOV Input signals
Table 823: NSPTOV Input signals
Name Type Default Description
U3P SIGNAL - Three-phase voltages
BLOCK BOOLEAN 0=False Block signal for acti-
vating the blocking
mode
NSPTOV Output signals
Table 824: NSPTOV Output signals
Name Type Description
OPERATE BOOLEAN Operate
START BOOLEAN Start
4.5.5.8 NSPTOV Settings
Table 825: NSPTOV Group settings (Basic)
Parameter
Values (Range) Unit Step Default Description
Start value 0.010...1.000 xUn 0.001 0.030 Start value
Operate delay time 40...120000 ms 1 40 Operate delay time
Table 826: NSPTOV Non group settings (Basic)
Parameter
Values (Range) Unit Step Default Description
Operation
1=on
5=off
1=on Operation Off / On
Table 827: NSPTOV Non group settings (Advanced)
Parameter
Values (Range) Unit Step Default Description
Reset delay time 0...60000 ms 1 20 Reset delay time
Protection functions 1MRS759142 F
878 REX640
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