ABB Relion REG670, Technical Manual, Page: 523 / 1298

9.4.4 Signals
Table 284: OEXPVPH Input signals
Name Type Default Description
I3P GROUP
SIGNAL
- Current connection
U3P GROUP
SIGNAL
- Voltage connection
BLOCK BOOLEAN 0 Block of function
RESET BOOLEAN 0 Reset operation
Table 285: OEXPVPH Output signals
Name Type Description
TRIP BOOLEAN Trip from overexcitation function
START BOOLEAN Overexcitation above set operate level
(instantaneous)
ALARM BOOLEAN Overexcitation above set alarm level (delayed)
9.4.5 Settings
Table 286: OEXPVPH Group settings (basic)
Name Values (Range) Unit Step Default Description
Operation Off
On
- - Off Operation Off / On
V/Hz> 100.0 - 180.0 %UB/f 0.1 110.0 Operate level of V/Hz at no load and rated
freq in % of (UBase/frated)
V/Hz>> 100.0 - 200.0 %UB/f 0.1 140.0 High level of V/Hz above which tMin is
used, in % of (UBase/frated)
XLeak 0.000 - 200.000 Ohm 0.001 0.000 Winding leakage reactance in primary
ohms
TrPulse 0.000 - 60.000 s 0.001 0.100 Length of the pulse for trip signal (in sec)
tMin 0.000 - 60.000 s 0.001 7.000 Minimum trip delay for V/Hz inverse curve,
in sec
tMax 0.00 - 9000.00 s 0.01 1800.00 Maximum trip delay for V/Hz inverse
curve, in sec
tCooling 0.10 - 9000.00 s 0.01 1200.00 Transformer magnetic core cooling time
constant, in sec
CurveType IEEE
Tailor made
- - IEEE Inverse time curve selection, IEEE/Tailor
made
kForIEEE 1 - 60 - 1 1 Time multiplier for IEEE inverse type
curve
AlarmLevel 50.0 - 120.0 % 0.1 100.0 Alarm operate level as % of operate level
tAlarm 0.00 - 9000.00 s 0.01 5.00 Alarm time delay, in sec
1MRK502052-UEN B
Section 9
Voltage protection
517
Technical manual