1–14
350 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL
SPECIFICATIONS
CHAPTER 1: INTRODUCTION
Metering
NOTE
NOTE:
Negative values (-) represent lead and positive values (+) represent lag.
CURRENTS
Parameters:...........................................................Phase A, Phase B, Phase C, Neutral, Ground, Sensitive
Ground, Positive Sequence, Negative Sequence, Zero
Sequence, and 2nd Harmonic
Accuracy: ...............................................................See the Inputs section in Chapter 1: Specifications
VOLTAGES
Parameters:...........................................................Wye VTs: AN, BN, CN, Negative Sequence, Zero Sequence
and Auxiliary
Delta VTs: AB, BC, CA, Negative Sequence, Zero Sequence
and Auxiliary
Accuracy: ...............................................................See the Inputs section in Chapter 1: Specifications
Data capture
TRANSIENT RECORDER
Buffer size: .............................................................3 s
No. of buffers:.......................................................1, 3, 6
No. of channels:...................................................14
Sampling rate:......................................................4, 8, 16, or 32 samples per cycle
Triggers: ..................................................................Manual Command
Contact Input
Virtual Input
Logic Element
Element Pickup/Trip/Dropout/Alarm
Data: .........................................................................AC input channels
Contact input state
Contact output state
Virtual input state
Logic element state
Data storage:........................................................RAM - battery backed-up
FAULT RECORDER
Number of records:............................................1
Content:...................................................................Date and Time, first cause of fault, phases,
Currents: Ia, Ib, Ib, Ig/Isg, In - magnitudes and angles
Voltages: Van, Vbn, Vcn, Vab, Vbc, Vca, Vaux - magnitudes
and angles
System frequency
PARAMETER
ACCURACY
(full scale for
CT Input is 3 x CT)
RESOLUTION
RANGE
3-Phase Real Power (MW or kW)
±1% of full scale
0.1 MW
± 100000.0 kW
3-Phase Reactive Power (Mvar or kvar) ±1% of full scale
0.1 Mvar
± 100000.0 kvar
3-Phase Apparent Power (MVA or kVA) ±1% of full scale
0.1 MVA
± 100000.0 kVA
3-Phase Positive Watthour (MWh)
±1% of full scale
±0.001 MWh
50000.0 MWh
3-Phase Negative Watthour (MWh)
±1% of full scale
±0.001 MWh
50000.0 MWh
3-Phase Positive Varhour (Mvarh)
±1% of full scale
±0.001 Mvarh
50000.0 Mvarh
3-Phase Negative Varhour (Mvarh)
±1% of full scale
±0.001 Mvarh
50000.0 Mvarh
Power Factor
±0.05
0.01
-0.99 to 1.00
Frequency
±0.05 Hz
0.01 Hz
40.00 to 70.00 Hz