BE1-11g
PERFORMANCE SPECIFICATIONS
INSTANTANEOUS OVERCURRENT WITH
SETTABLE DELAY (50)
Pickup: 5A CT 0.5 - 150.0A
1A CT 0.1 - 30.0A
PU time with TD = 0.000 Sec
2 cyc for P, N &G @ 5 x PU
3 cyc for Q @ 5 x PU
Delay time: 0.000 - 60 sec
Time Accuracy: ±0.5% or ±½ cyc for P and N
±0.5% or ±1 cyc for Q
TIME OVERCURRENT (51)
Pickup: 5A CT 0.5 - 16.0A
1A CT 0.1 - 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.
CURRENT PICKUP ACCURACY (All 50 and 51)
Phase and Ground: 5A 2% or 50mA
1A 2% or 10mA
Neutral and Negative 5A 3% or 75mA
Sequence: 1A 3% or 75mA
51P VOLTAGE CONTROL (27R)
Control Modes: Uncontrolled, voltage
controlled, voltage restrained.
Control/Restraint Range: 30 - 250V
Restrained Mode Characteristic: (see below)
NEGATIVE SEQUENCE OVERCURRENT (46)
Pickup: 5A CT 0.1-16.0A
1A CT 0.02-3.20A
Time dial: TD=K=0-99 for 46 curve
TD=0.00-9.9 for all other curves
Time-Current
Characteristics: Same curves as 51 elements
Constants
Curve
Type
S1
S2
L1
L2
D
M
I1
I2
V1
V2
E1
E2
A
B
C
G
F
46
A1
B1
C1
D1
E3
F1
P
T
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 46 = Negative Sequence Overcurrent
E1, E2 = CO Ext Inverse, IAC Ext. Inverse P = Programmable
T** = Table Lookup (T1 through T4)
* Constant A is variable for the 46 curve and is determined as
necessary based on system full load current setting, minimum
pickup, and K factor settings.
** Tabular curve definition may include up to 40 points for each
of 4 user-defined curves.
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 1.0000 0.028 29.0000
0.0000 1.00000 0.000 0.0000 0.028 1.0000
* 0.00000 0.000 2.0000 0.028 100.0000
0.1400 0.00000 1.000 0.0200 0.000 2.0000
13.5000 0.00000 1.000 1.0000 0.000 3.2500
80.0000 0.00000 1.000 2.0000 0.000 8.0000
0.0515 0.11400 1.000 0.0200 0.000 4.8500
19.6100 0.49100 1.000 2.0000 0.000 21.6000
28.2000 0.12170 1.000 2.0000 0.000 29.1000
0 to 600 0 to 25 0 to 1 .5 to 2.5 0.028 0 to 30
User defined currents and time delays.
BREAKER FAILURE (50BF)
Time: 50 - 999mSec
Dropout: 5A CT 0.5A
1A CT 0.1A
Time Accuracy: ±0.5% or +1¼ cyc / - ½ cyc
DIRECTIONAL CONTROL (ALL OVERCURRENT)
Mode: Forward, Reverse,
Nondirectional
67P Polarization: Positive Sequence w/Memory
or Negative Sequence
67Q Polarization: Negative Sequence
67N Polarization: Selectable any combination
Zero Sequence Voltage
(Requires 4W VT)
Zero Sequence Current
(Requires IG)
Negative Sequence Current
9
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