Basler BE1-11g Instruction Manual page 616

604
Curve
Curve Name
Selection
I2 IAC Inverse Time
M
CO Moderately Inverse
D1 IEEE Moderately Inverse
L1 CO Long Inverse
L2
IAC Long Inverse
G
Long Time Inverse (I
V1 CO Very Inverse
V2
IAC Very Inverse
B
Very Inverse (I
B1 IEC Very Inverse
E3 IEEE Very Inverse
E1 CO Extremely Inverse
E2
IAC Extremely Inverse
C
Extremely Inverse (I
C1 IEC Extremely Inverse
F1 IEEE Extremely Inverse
D CO Definite Time
F Fixed Time ‡
46 K Factor
P User Programmable §
User Table 1 ║
T1
User Table 2 ║
T2
User Table 3 ║
T3
User Table 4 ║
T4
∗ Instantaneous or integrating reset is selected on the Inverse Overcurrent setup screen in
BESTCOMSPlus®.
† 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.
‡ Curve F has a fixed delay of one second times the Time Dial setting.
§ The programmable curve allows for four significant digits after the decimal place for every variable.
║ There is a minimum of 2 and maximum of 40 points that can be entered for any one T curve. For
information on setting T curves, refer to the Inverse Overcurrent (51) Protection chapter.
Time Overcurrent Characteristic Curve Graphs
The figures after the tables illustrate the characteristic curves of the BE1-11g. Table 257 cross-references
each curve to existing electromechanical relay characteristics. Equivalent time dial settings were
calculated at a value of five times pickup.
Curve
S1
Time Curve Characteristics
A
0.2747
0.3022
0.0515
5.6143
2.3955
2
12.1212
t)
5.4678
4.4309
2
1.4636
t)
13.5
19.61
7.7624
4.9883
2
8.2506
t)
80
28.2
0.4797
0
†
0 to 600
n/a
n/a
n/a
n/a
Table 257. Characteristic Curve Cross-Reference
Curve Name
CO Short Inverse
Trip Characteristic Constants
B C
0.10426 1 0.4375
0.1284 1
0.114 1
2.18592 1
0 1 0.3125
0 1
0.10814 1 2.0469
0.0991 1 1.9531
0 1 1.0469
0 1
0.491 1
0.02758 1 2.0938
0.0129 1 2.0469
0 1 2.0469
0 1
0.1217 1
0.21359 1 1.5625
1 0
0 0
0 to 25 0 to 1 0.5 to 2.5
n/a n/a
n/a n/a
n/a n/a
n/a n/a
ABB CO-2
9424200994 Rev U
Reset ∗
N K R
0.028 0.8868
0.5 0.028 1.75
0.02 0 4.85
1 0.028 15.75
0.028 7.8001
1 0.028 29
0.028 5.5
0.028 5.8231
0.028 3.25
1 0 3.25
2 0 21.6
0.028 7.75
0.028 4.7742
0.028 8
2 0 8
2 0 29.1
0.028 0.875
0 0 1
2 0.028 100
0.028 0 to 30
n/a n/a n/a
n/a n/a n/a
n/a n/a n/a
n/a n/a n/a
Similar To
BE1-11g