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CHAPTER 1: INTRODUCTION
Specifications
NOTE:
NOTE:
Password security
Protection
350 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL
Specifications are subject to change without notice.
To obtain the total element operating time, i.e. from the presence of a trip condition to
initiation of a trip, add 8 ms output relay time to the operate times listed below, with the
exception of Arc Flash SSR loads.
PASSWORD SECURITY
Master Password: ...............................................8 to 10 alpha-numeric characters
Settings Password:.............................................3 to 10 alpha-numeric characters for local and remote
Control Password:...............................................3 to 10 alpha-numeric characters for local and remote
BROKEN CONDUCTOR (I1/I2 OR 46BC)
Minimum operating positive current:........ 0.05 to 1.00 x CT in steps of 0.01 x CT
Maximum operating positive current:....... 0.05 to 5.00 x CT in steps of 0.01 x CT
Pickup level: ........................................................... 20.0% to 100.0% in steps of 0.1%
Dropout level:........................................................ 97% to 98% of the pickup level
Pickup time delay: .............................................. 0.000 to 65.535 s in steps of 0.001 s
Timer accuracy: .................................................. ± 3% of delay setting or ± ¾ cycle (whichever is greater)
Operate time:........................................................ <30 ms at 60 Hz
WATTMETRIC GROUND FAULT (32N)
Measured power: ................................................ zero sequence
Number of elements: ........................................ 1
Characteristic angle: ......................................... 0º to 359º in steps of 1°
Pickup threshold:................................................. 0.001 to 1.200 pu in steps of 0.001 pu
Pickup level accuracy:...................................... ± 2% or ± 0.03 pu, whichever is greater
Hysteresis:.............................................................. 3% or 0.001 pu, whichever is greater
Pickup delay:......................................................... Definite Time (0.00 to 600 .0 s in steps of 0.1 s), Inverse Time,
Inverse time multiplier:..................................... 0.01 to 2.00 in steps of 0.01
Curve timing accuracy:.................................... ± 3.5% of operate time or ± ¼ cycle (whichever is greater)
Operate time:........................................................ <30 ms at 60 Hz
access
access
from pickup to operate
or Flexcurve
from pickup to operate
SPECIFICATIONS
1–9
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