9.4.4 Signals
PID-3514-INPUTSIGNALS v5
Table 354: OEXPVPH (24) Input signals
Name Type Default Description
I3P GROUP
SIGNAL
- Current connection
V3P GROUP
SIGNAL
- Voltage connection
BLOCK BOOLEAN 0 Block of function
RESET BOOLEAN 0 Reset operation
PID-3514-OUTPUTSIGNALS v5
Table 355: OEXPVPH (24) Output signals
Name Type Description
TRIP BOOLEAN Trip from overexcitation function
PICKUP BOOLEAN Overexcitation above set trip pickup (instantaneous)
ALARM BOOLEAN Overexcitation above set alarm pickup (delayed)
9.4.5 Settings
PID-3514-SETTINGS v5
Table 356: OEXPVPH (24) Group settings (basic)
Name Values (Range) Unit Step Default Description
Operation Disabled
Enabled
- - Disabled Operation Disabled/Enabled
Pickup1 100.0 - 180.0 %VB/f 0.1 110.0 Operate level of V/Hz at no load and rated
freq in % of (UBase/frated)
Pickup2 100.0 - 200.0 %VB/f 0.1 140.0 High level of V/Hz above which tMin is
used, in % of (VBase/frated)
XLeakage 0.000 - 200.000 Ohm 0.001 0.000 Winding leakage reactance in primary
ohms
t_TripPulse 0.000 - 60.000 s 0.001 0.100 Length of the pulse for trip signal (in sec)
t_MinTripDelay 0.000 - 60.000 s 0.001 7.000 Minimum trip delay for V/Hz inverse curve,
in sec
t_MaxTripDelay 0.00 - 9000.00 s 0.01 1800.00 Maximum trip delay for V/Hz inverse curve,
in sec
t_CoolingK 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
TDForIEEECurve 1 - 60 - 1 1 Time multiplier for IEEE inverse type curve
AlarmPickup 50.0 - 120.0 % 0.1 100.0 Alarm pickup level as % of Step1 trip
pickup level
tAlarm 0.00 - 9000.00 s 0.01 5.00 Alarm time delay, in sec
1MRK 502 066-UUS B Section 9
Voltage protection
637
Technical manual
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