9.6.4 Signals
PID-3576-INPUTSIGNALS v3
Table 368: STEFPHIZ (59THD) Input signals
Name Type Default Description
U3PNEUT GROUP
SIGNAL
- Voltage connection neutral side
U3PTERM GROUP
SIGNAL
- Open-Delta connection on Terminal side
52a BOOLEAN 1 TRUE means breaker between gen. & trafo is closed
BLOCK BOOLEAN 0 Complete block of the stator ground fault protecion function
BLOCK3RD BOOLEAN 0 Block of the 3rd harmonic-based parts of the protection
BLOCKVN BOOLEAN 0 Block of the fund. harmonic-based part of the protection
PID-3576-OUTPUTSIGNALS v3
Table 369: STEFPHIZ (59THD) Output signals
Name Type Description
TRIP BOOLEAN Main, common trip command
TRIP3H BOOLEAN Trip by one of two 3rd harmonic voltage-based prot.
TRIP_VN BOOLEAN Trip by fund. freq. neutral over-voltage protection
PICKUP BOOLEAN Main, common pick up signal
PU_3H BOOLEAN Pickup by one of two 3rd harmonic voltage-based prot.
PU_VN BOOLEAN Pick up signal by fund. freq. neutral over-voltage prot.
VT3 REAL Mag. of 3rd harm. voltage at generator terminal side, Volts
VN3 REAL Mag. of 3rd harm. voltage at generator neutral side, Volts
E3 REAL Total induced stator 3rd harmonic voltage, primary Volts
ANGLE REAL Angle between 3rd harmonic votage phasors, radians
DV3 REAL Diff. between 3rd harm. volt. at both sides of gen., Volts
BV3 REAL Bias voltage, a part of voltN3rdHarmonic, primary Volts
V_N REAL Fund. frequency voltage at generator neutral, primary Volts
9.6.5 Settings
PID-3576-SETTINGS v3
Table 370: STEFPHIZ (59THD) Group settings (basic)
Name
Values (Range) Unit Step Default Description
Operation Disabled
Enabled
- - Disabled Operation Disabled/Enabled
Beta 0.50 - 10.00 - 0.01 3.00 Portion of voltN3rdHarmonic used as bias
CBexists No
Yes
- - No Defines if generator CB exists (between
Gen & Transformer)
Table continues on next page
Section 9 1MRK 502 066-UUS B
Voltage protection
654
Technical manual
To Next Page
Loading...
