Pre-Fault - GE Multilin 850 Instruction Manual

CHAPTER 4: SETPOINTS

Pre-Fault

Fault
850 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL
This state is intended to simulate the normal operating condition of a system by replacing
the normal input parameters with programmed pre-fault values. For proper simulation,
values entered here must be below the minimum trip setting of any protection feature.
Voltage magnitudes and angles are entered as Wye values only. The voltage setpoints are
not available if the corresponding VT Bank PHASE VT CONNECTION setpoint is Delta.
Voltages are set in secondary VT units.
The CT and VT Bank availability is dependent on the installed Order Code options.
Path:
Setpoints > Testing > Simulation > Pre-Fault
J2 Prefault Van(Vbn,Vcn,Vx) Voltage:
Range: 0.00 to 300.00 V in steps of 0.01
Default: 0.00 V
J2 Prefault Van(Vbn,Vcn,Vaux) Angle:
Range: -359.9° to 0.0° in steps of 0.1
Default: 0.0°
J1 Prefault Phase la(lb,lc):
Range: 0.000 to 46.000 x CT in steps of 0.001 x CT
Default: 0.000 x CT
Phase current magnitudes are entered as a multiple of the corresponding CT Bank
PHASE CT PRIMARY setpoint.
J1(K1) Prefault Phase lg:
Range:
For Ground CT: 0.000 to 46.000 x CT in steps of 0.001 x CT
For Sensitive Ground CT: 0.000 to 4.600 x CT in steps of 0.001 x CT
Default: 0.000 x CT
The ground current magnitude setpoint range is dependent on the ground CT type as
defined in the Order Code options. For Ground CT, the magnitude is entered as a multiple
of the corresponding CT Bank GROUND CT PRIMARY setpoint. For Sensitive Ground CT,
the magnitude is entered as a multiple of the corresponding CT Bank SENS GROUND CT
PRIMARY setpoint.
J1(K1) Prefault la(lb,lc,lg) Angle:
Range: -359.9° to 0.0° in steps of 0.1
Default: 0.0°
The Fault state is intended to simulate the faulted operating condition of a system by
replacing the normal input parameters with programmed fault values.
Voltage magnitudes and angles are entered as Wye values only. The voltage setpoints are
not available if the corresponding VT Bank PHASE VT CONNECTION setpoint is Delta.
Voltages are set in secondary VT units.
The CT and VT Bank availability is dependent on the installed Order Code options.
Path:
Setpoints > Testing > Simulation > Fault
J2 Fault Van(Vbn,Vcn,Vx) Voltage:
Range: 0.00 to 300.00 V in steps of 0.01
Default: 0.00 V
J2 Fault Van(Vbn,Vcn,Vaux) Angle:
Range: -359.9° to 0.0° in steps of 0.1
Default: 0.0°
J1 Fault Phase la(lb,lc):
Range: 0.000 to 46.000 x CT in steps of 0.001 x CT
Default: 0.000 x CT
TESTING
4–427