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SPECIFICATIONS
Control
1–18
BREAKER CONTROL
Operation
(Remote Control):.......................................... Asserted Flexlogic Operand, Contact Input, Virtual Input,
Operation
(Local Control):............................................... PB1, PB2, and PB3
Function:................................................................. Opens/closes the transformer breakers
TRIP BUS
Number of Elements: ........................................ 6
Number of Inputs: .............................................. 16
Pickup Time Delay:............................................. 0.000 to 6000.000 s in steps of 0.001 s
Dropout Time Delay: ......................................... 0.000 to 6000.000 s in steps of 0.001 s
Operate Time: ...................................................... < 2 ms at 60 Hz
Timer Accuracy: .................................................. ± 3% of delay time or ± ¼ cycle (whichever is greater) from
BREAKER FAILURE
Mode:........................................................................ 3-pole
Current Supervision:.......................................... phase and neutral current (fundamental phasor magnitude)
Current Supervision Pickup:........................... 0.050 to 30.000 x CT in steps of 0.001 x CT
Current Supervision Dropout: ....................... 97 to 98% of pickup
Current Supervision Accuracy:..................... For 0.1 to 2.0 x CT: ± 0.5% of reading or ± 0.4% of rated
Time Delay:............................................................ 0.000 to 6000.000 s in steps of 0.001 s
Timer Accuracy: .................................................. ± 3% of delay setting or ± ¼ cycle (whichever is greater) from
Reset Time: ............................................................ < 10 ms typical at 2 x Pickup at 60 Hz
ARC FLASH SENSOR/FIBER
Number of Point Sensors:............................... 4
Detection Radius: ............................................... 180 degree
Maximum Fiber Length (Point Sensor):..... 18 ft
Fiber Size: ............................................................... 1000 um
Mode:........................................................................ Multi-mode
Connector: ............................................................. Small Media Interface (SMI)
Fiber Type:.............................................................. Plastic Optical Fiber
Bend Radius:......................................................... 25 mm maximum
SYNCHROCHECK (25)
Maximum Frequency Difference:................ 0.01 to 5.00 Hz in steps of 0.01 Hz for frequency window of
Maximum Angle Difference: .......................... 1° to 100° in steps of 1°
Maximum Voltage Difference:...................... 10 to 600000 V in steps of 1 V
Hysteresis for Maximum Frequency
Difference: ........................................................ 0.01 to 0.10 Hz in steps of 0.01 Hz
Breaker Closing Time:....................................... 0.000 to 6000.000 s in steps of 0.001 s
Dead Source Function:..................................... None, LB & DL, DB & LL, DB & DL, DB OR DL, DB XOR DL
Dead/Live Levels for Bus and Line: ............ 0.00 to 1.50 x VT in steps of 0.01 x VT
Virtual Output, Remote Input
pickup to operate
(whichever is greater),
For > 2.0 x CT: ± 1.5% of reading
pickup to operate
< 12 ms typical at 2 x Pickup at 50 Hz
f
± 5 Hz
nom
850 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 1: INTRODUCTION
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