82-2
9424200996
Time Curve Characteristics
BE1-11
m
Curve
Selection
Curve Name
Trip Characteristic Constants
Reset
∗
A
B
C
N
K
R
I1
CO Inverse Time
8.9341
0.17966
1
2.0938
0.028
9
I2
IAC Inverse Time
0.2747
0.10426
1
0.4375
0.028
0.8868
M
CO Moderately Inverse
0.3022
0.1284
1
0.5
0.028
1.75
D1
IEEE Moderately Inverse
0.0515
0.114
1
0.02
0
4.85
L1
CO Long Inverse
5.6143
2.18592
1
1
0.028
15.75
L2
IAC Long Inverse
2.3955
0
1
0.3125
0.028
7.8001
G
Long Time Inverse (I
2
t)
12.1212
0
1
1
0.028
29
V1
CO Very Inverse
5.4678
0.10814
1
2.0469
0.028
5.5
V2
IAC Very Inverse
4.4309
0.0991
1
1.9531
0.028
5.8231
B
Very Inverse (I
2
t)
1.4636
0
1
1.0469
0.028
3.25
B1
IEC Very Inverse
13.5
0
1
1
0
3.25
E3
IEEE Very Inverse
19.61
0.491
1
2
0
21.6
E1
CO Extremely Inverse
7.7624
0.02758
1
2.0938
0.028
7.75
E2
IAC Extremely Inverse
4.9883
0.0129
1
2.0469
0.028
4.7742
C
Extremely Inverse (I
2
t)
8.2506
0
1
2.0469
0.028
8
C1
IEC Extremely Inverse
80
0
1
2
0
8
F1
IEEE Extremely Inverse
28.2
0.1217
1
2
0
29.1
D
CO Definite Time
0.4797
0.21359
1
1.5625
0.028
0.875
F
Fixed Time
‡
0
1
0
0
0
1
46
K Factor
†
0
0
2
0.028
100
P
User Programmable §
0 to 600
0 to 25
0 to 1 0.5 to 2.5 0.028
0 to 30
T1
User Table 1
║
n/a
n/a
n/a
n/a
n/a
n/a
T2
User Table 2
║
n/a
n/a
n/a
n/a
n/a
n/a
T3
User Table 3
║
n/a
n/a
n/a
n/a
n/a
n/a
T4
User Table 4
║
n/a
n/a
n/a
n/a
n/a
n/a
∗
Instantaneous or integrating reset is selected on the Inverse Overcurrent setup screen in
BESTCOMS
Plus
®
.
†
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 BE1-11
m
. Table 82-2 cross-
references each curve to existing electromechanical relay characteristics. Equivalent time dial settings
were calculated at a value of five times pickup.
Summary of Contents for BE1-11m
Page 8: ...vi 9424200996 Revision History BE1 11m...
Page 12: ...x 9424200996 Contents BE1 11m...
Page 21: ...9424200996 1 9 BE1 11m Introduction Figure 1 1 Style Chart...
Page 22: ...1 10 9424200996 Introduction BE1 11m...
Page 40: ...3 6 9424200996 Controls and Indicators BE1 11m Figure 3 3 Front Panel Display Setup Screen...
Page 54: ...5 6 9424200996 Phase Undervoltage 27P Protection BE1 11m...
Page 56: ...6 2 9424200996 Negative Sequence Voltage 47 Protection BE1 11m...
Page 61: ...9424200996 7 5 BE1 11m Phase Overvoltage 59P Protection Figure 7 3 Overvoltage Settings Screen...
Page 62: ...7 6 9424200996 Phase Overvoltage 59P Protection BE1 11m...
Page 68: ...8 6 9424200996 Auxiliary Overvoltage 59X Protection BE1 11m...
Page 80: ...12 4 9424200996 Instantaneous Overcurrent 50 Protection BE1 11m...
Page 84: ...13 4 9424200996 Breaker Failure 50BF Protection BE1 11m...
Page 92: ...14 8 9424200996 Inverse Overcurrent 51 Protection BE1 11m...
Page 105: ...9424200996 18 3 BE1 11m Power Factor 55 Protection Figure 18 2 Power Factor Settings Screen...
Page 106: ...18 4 9424200996 Power Factor 55 Protection BE1 11m...
Page 110: ...19 4 9424200996 Resistance Temperature Detector 49RTD Protection BE1 11m...
Page 118: ...20 8 9424200996 Thermal Curve 49TC Protection BE1 11m...
Page 122: ...22 2 9424200996 Starts per Time Interval 66 Protection BE1 11m...
Page 124: ...23 2 9424200996 Restart Inhibit Protection BE1 11m...
Page 140: ...28 4 9424200996 Breaker Control Switch 101 BE1 11m...
Page 148: ...29 8 9424200996 Setting Groups BE1 11m...
Page 156: ...30 8 9424200996 Metering BE1 11m Figure 30 11 RTD Meter Screen...
Page 158: ...31 2 9424200996 Digital Points BE1 11m Figure 31 2 Digital Points Monitor Screen...
Page 177: ...9424200996 34 5 BE1 11m Motor Reporting Figure 34 9 Learned Motor Data Screen...
Page 178: ...34 6 9424200996 Motor Reporting BE1 11m...
Page 184: ...35 6 9424200996 Alarms BE1 11m...
Page 186: ...36 2 9424200996 Differential Reporting BE1 11m...
Page 196: ...38 4 9424200996 Demands BE1 11m...
Page 198: ...39 2 9424200996 Load Profile BE1 11m...
Page 208: ...41 6 9424200996 Trip Circuit Monitor 52TCM BE1 11m...
Page 212: ...42 4 9424200996 Fuse Loss 60FL BE1 11m...
Page 218: ...43 6 9424200996 BESTnet Plus BE1 11m Figure 43 8 Power Quality Page...
Page 221: ...9424200996 44 3 BE1 11m Mounting Figure 44 3 Case Side Dimensions...
Page 235: ...9424200996 45 5 BE1 11m Terminals and Connectors Figure 45 7 Example of Reversed CT Polarity...
Page 236: ...45 6 9424200996 Terminals and Connectors BE1 11m...
Page 269: ...9424200996 48 15 BE1 11m BESTlogic Plus Figure 48 4 Logic Page 1 for Default Logic...
Page 288: ...49 10 9424200996 Communication BE1 11m Figure 49 14 Modbus Mapping Screen...
Page 306: ...52 4 9424200996 Device Information BE1 11m...
Page 314: ...53 8 9424200996 Configuration BE1 11m Figure 53 3 Display Units Screen...
Page 318: ...54 4 9424200996 Introduction to Testing BE1 11m...
Page 330: ...56 6 9424200996 Commissioning Testing BE1 11m...
Page 336: ...58 4 9424200996 Phase Undervoltage 27P Test BE1 11m...
Page 340: ...59 4 9424200996 Phase Overvoltage 59P Test BE1 11m...
Page 352: ...60 12 9424200996 Auxiliary Overvoltage 59X Test BE1 11m...
Page 360: ...61 8 9424200996 Frequency 81 Test BE1 11m...
Page 364: ...62 4 9424200996 Instantaneous Undercurrent 37 Test BE1 11m...
Page 376: ...63 12 9424200996 Instantaneous Overcurrent 50 Test BE1 11m...
Page 396: ...65 16 9424200996 Inverse Overcurrent 51 Test BE1 11m...
Page 408: ...67 6 9424200996 Power 32 Test BE1 11m...
Page 412: ...68 4 9424200996 Loss of Excitation Reverse Var Based 40Q Test BE1 11m...
Page 426: ...70 10 9424200996 Thermal Curve 49TC Test BE1 11m...
Page 432: ...72 4 9424200996 Starts per Time Interval 66 Test BE1 11m...
Page 436: ...73 4 9424200996 Restart Inhibit Test BE1 11m...
Page 440: ...74 4 9424200996 Virtual Control Switches 43 Test BE1 11m...
Page 450: ...75 10 9424200996 Logic Timers 62 Test BE1 11m...
Page 464: ...79 8 9424200996 Troubleshooting BE1 11m...
Page 480: ...80 16 9424200996 Specifications BE1 11m...
Page 600: ...84 56 9424200996 Settings Calculation Examples BE1 11m Figure 84 70 Logic Page 4 Part 1...
Page 602: ...84 58 9424200996 Settings Calculation Examples BE1 11m...
Page 608: ...85 6 9424200996 BESTCOMSPlus Settings Loader Tool BE1 11m...
Page 609: ......