1-10 BE1-951 General Information 9328900990 Rev L
Current Pickup Ranges (50T, 150T):
5 Ampere CT
Range: 0.5 to 150.0 A
Increments: 0.01 from 0.50 to 9.99 A, 0.1 from 10.0 to 99.9 A
and 1.0 from 100 A to 150 A
1 Ampere CT
Range: 0.1 to 30.0 A
Increments: 0.01 from 0.01 to 9.99 A, 0.1 from 10.0 to 30.0 A
Settable Time Delay Characteristics (50T, 150T): Definite time for any current exceeding pickup
Time Range: 0.00 to 60.0 seconds
Time Increments: One millisecond from 0 to 999 milliseconds, 0.1
second from 1.0 to 9.9 seconds, 1 second from 10
to 60 seconds
Timing Accuracy (50TP, 50TN, 150TP, 150TN): ±0.5% or ±½ cycle whichever is greater plus trip
time for instantaneous response (0.0 setting)
Timing Accuracy (50TQ, 150TQ): ±0.5% or ±1 cycle whichever is greater plus trip
time for instantaneous response (0.0 setting)
Trip Time: For 0.0 delay setting:
(50TP, 50TN, 150TP, 150TN): 2¼ cycles maximum for currents 5 times the
pickup setting. Three cycles maximum for a
current of 1.5 times pickup. Four cycles maximum
for a current of 1.05 times the pickup setting
Trip Time: For 0.0 delay setting:
(50TQ, 150TQ, and 50T/150T): 3¼ cycles maximum for currents 5 times the
pickup setting. 4 cycles maximum for a current of
1.5 times pickup. Five cycles maximum for a
current of 1.05 times the pickup setting
Directional Element (67)
Mode: Forward, Reverse, And Nondirectional
67P Polarization: Positive-Sequence w/Memory
Negative-Sequence
67Q Polarization: Negative-Sequence
67N Polarization: Selectable any combination
Zero-Sequence Voltage (Requires 4W VT)
Zero-Sequence Current (Requires IG)
Negative-Sequence
Volts/HZ (24)
Pickup: 0.5 - 6V/Hz
Delay Time: Inverse Squared Curve
()
2
1−
=
M
D
T
T
T
T
T
= Time Trip
D
T
= Time Dial, Trip
V/HzPickup
V/HzActual
M =
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