GE 350-A9 Quick Start Manual page 19

CHAPTER 1: INTRODUCTION
NOTE:
350 FEEDER PROTECTION SYSTEM – QUICKSTART GUIDE
PHASE/AUXILIARY/NEUTRAL/NEGATIVE SEQUENCE OVERVOLTAGE (59P, 59X, 59N, 59_2)
Pickup Level:.......................................................... 0.00 to 1.25 x VT in steps of 0.01
Dropout Level: ...................................................... 98% of pickup (pickup > 0.1 x VT)
Time Delay:............................................................ 0.00 to 600.00 s in steps of 0.01
Operate Time:....................................................... Time delay ±35 ms @ 60Hz (V > 1.1 x PKP)
Time Delay Accuracy: ...................................... ±3% of expected time, or 1 cycle, whichever is greater
Level Accuracy:.................................................... Per voltage input
UNDERFREQUENCY (81U)
Minimum Voltage:............................................... 0.00 to 1.25 x VT in steps of 0.01
Pickup Level:.......................................................... 40.00 to 70.00 Hz in steps of 0.01
Dropout Level: ...................................................... Pickup + 0.05 Hz
Time Delay:............................................................ 0.10 to 600.0 s in steps of 0.01
Time Delay Accuracy: ...................................... 0 to 6 cycles (Time Delay selected)
Operate Time:....................................................... Typically 10 cycles @ 0.1Hz/s change
Level Accuracy:.................................................... ±0.03 Hz
OVERFREQUENCY (81O)
Minimum Voltage:............................................... 0.3 x VT
Pickup Level:.......................................................... 40.00 to 70.00 Hz in steps of 0.01
Dropout Level: ...................................................... Pickup - 0.05 Hz
Time Delay:............................................................ 0.1 to 600.0 s in steps of 0.01
Time Delay Accuracy: ...................................... 0 to 6 cycles (Time Delay selected)
Operate Time:....................................................... Typically 10 cycles @ 0.1Hz/s change
Level Accuracy:.................................................... ±0.03 Hz
ARC FLASH HS PHASE/GROUND INSTANTANEOUS OVERCURRENT HS 50P/50G
Current:.................................................................... RMS Magnitude (special high speed algorithm)
Pickup Level:.......................................................... 0.050 to 30.000 x CT in steps of 0.001 x CT
Dropout Level: ...................................................... 97 to 98% of Pickup
Level Accuracy:.................................................... For 0.1 to 0.2 x CT: ± 0.2% of reading or 1.5% of rated
Operate Time:....................................................... 4 ms at >6 x Pickup at 60 Hz
The operate times listed require that SSR output relays (Aux 5 and 6) be used for Arc Flash
detection.
ARC FLASH SENSOR/FIBER
Number of Sensors: ........................................... 4
Detection Radius:................................................ 180 degree
Maximum Duplex Fiber Length (Point
Sensor):............................................................... 35 m
Maximum Single Fiber Length (Loop
Sensor):............................................................... 70 m
Fiber Size:................................................................ 1.0 mm core diameter
Mode:........................................................................ Multi-mode
Connector:.............................................................. Small Media Interface (SMI)
Fiber Type:.............................................................. Plastic Optical Fiber
Bend Radius: ......................................................... 35 mm minimum
Product Type:........................................................ Class 1 Laser product
Pickup - 0.02 x VT (pickup < 0.1 x VT)
Time delay ±40 ms @ 50Hz (V > 1.1 x PKP)
current, whichever is greater
For > 0.2 x CT: ± 5% of reading
5 ms at >6 x Pickup at 50 Hz
4-8 ms at > (3-6) x Pickup at 60 Hz
4-10 ms at > (3-6) x Pickup at 50 Hz
2.2 mm total diameter (single)
4.4 mm total diameter (duplex)
SPECIFICATIONS
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