BE1-851E
PERFORMANCE SPECIFICATIONS
INSTANTANEOUS OVERCURRENT WITH
SETTABLE DELAY (50TP, 150TP, 50TN, 150TN,
50TQ, 150TQ)
Pickup:
5A CT: 0.5-150.0A
1A CT: 0.1-30.0A
PU time with TD=0.000 Sec
1
¼
cyc for P&N @ 5 x PU
2
¼
cyc for Q @ 5 x PU
Delay time: 0.000 - 60 sec
Time Accuracy:
±0.5% or ±
¼
cyc for P&N
±0.5% or ±1 cyc for Q
TIME OVERCURRENT (51P, 51N, 51Q)
Pickup:
5A CT: 0.50-16.0A
1A CT: 0.10-3.20A
Time Dial: TD=K=0 - 99 for 46 curve
TD=0.0 - 9.9 for all other curves
Time-Current Characteristics:
The following expression describes the inverse
time current characteristic for each curve:
T
T
= AD + BD + K = Time to trip
M
N
-C
T
R
= RD = Time for decaying reset
M
2
-1
where D = Time dial, M = Multiple of PU and A, B, C,
N, K and R are constants that govern the shape of
each curve. The protection engineer can set the
constants for the P (programmable) curve to achieve
virtually any characteristic.
BREAKER FAILURE (BF)
Time:
50-999 mSec
Dropout:
5A CT: 0.5A
1A CT: 0.1A
Time Accuracy: ±0.5% or +1
¼
cyc/ -
¼
cyc
GENERAL PURPOSE LOGIC TIMERS (62, 162)
Mode:
PU.DO
1 Shot, Non-Retrig.
1 Shot, Retrig.
Integrating
Latch
T1 and T2 Delay Time:
0.000 - 9999 sec.
Time Accuracy:
±0.5% or ±
½
cyc
RECLOSER (79)
Mode:
Power up to close
Power up to lockout
Reclose Shots:
0 - 4
Reclose, Reset, Fail,
Max. Cycle Timers:
0.100 - 600 sec.
Time Accuracy:
±0.5% or +1
¾
cyc /
-0 cyc
CURRENT PICKUP ACCURACY
Phase and Neutral:
5A: 2% or 50mA
1A: 2% or 10mA
Negative Sequence:
5A: 3% or 75mA
1A: 3% or 75mA
SETTING GROUPS
Setting Groups:
4
Control Modes:
Automatic: CLP; Dynamic load
or unbalance; External:
Discrete input logic; Binary
Input Logic
METERING
Current Range:
5A: 0.5 to 15.0
1A: 0.1 to 3.0
Current Accuracy: ±1%
DEMANDS (IA, IB, IC, IN, IQ)
Demand Interval:
1 - 60 min.
Demand Mode:
Thermal
BREAKER MONITORING
Duty Mode:
I or I
2
Duty Alarm Range:
0-100%
Op Counter Alarm Range: 0-99999
Trip Time Alarm Range:
20-1000 mSec
Constants
Curve
Type
S1
S2
L1
L2
D
M
I1
I2
V1
V2
E1
E2
A
B
C
G
F
P
A B C N K R
0.2663 0.03393
1.000
1.2969
0.028
0.5000
0.0286
0.02080
1.000
0.9844
0.028
0.0940
5.6143 2.18592
1.000
1.000 0.028
15.750
2.3955
0.00000
1.000
0.3125
0.028
7.8001
0.4797
0.21359
1.000
1.5625
0.028
0.8750
0.3022
0.12840
1.000
0.5000
0.028
1.7500
8.9341
0.17966
1.000
2.0938
0.028
9.0000
0.2747
0.1042
1.000
0.4375
0.028
0.8868
5.4678
0.10814
1.000
2.0469
0.028
5.5000
4.4309
0.0991
1.000
1.9531
0.028
5.8231
7.7624
0.02758
1.000
2.0938
0.028
7.7500
4.9883
0.0129
1.000
2.0469
0.028
4.7742
0.01414 0.00000
1.000
0.0200
0.028
2.0000
1.4636
0.00000
1.000
1.0469
0.028
3.2500
8.2506
0.00000
1.000
2.0469
0.028
8.0000
12.1212 0.00000
1.000
1.000
0.028
29.000
0.0000 1.00000
0.000
0.0000
0.028
1.0000
0 to 600 0 to 25 0 to 1 .5 to 2.5 0.028 0 to 30
S1, S2
= CO Short Inv, IAC Short Inv
A
= IEC Standard Inverse
L1, L2
= CO Long Inv, IAC Long Inv
B
= IEC Very Inverse
D
= CO Definite Time
C
= IEC Extremely Inverse
M
= CO Moderately Inverse
G
= IEC Long Time Inverse
I1, I2
= CO Inverse, IAC Inverse
F
= Fixed Time
V1, V2
= CO Very Inv, IAC Very Inv
P
= Programmable
E1, E2
= CO Ext Inverse, IAC Ext. Inverse
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