1-8
General Information
BE1-951
OPERATIONAL SPECIFICATIONS
BE1-951 relays have the following features and capabilities.
Metered Current Values And Accuracy
Current Range:
5A: 0.5 to 15
1A: 0.1 to 3.0
Accuracy:
±1% of reading, ±1 least significant digit at 25
C
Temperature Dependence:
±0.02% per
C
Metered Voltage Values And Accuracy
Voltage Range
3 wire:
0 to 300 V
L-L
4 wire:
0 to 300 V
L-L
Accuracy (10 to 75 hertz)
50 V to 300 V:
±0.5% of reading, ±1 least significant digit at 25
C
Temperature Dependence:
±0.02% per
C
Metered Frequency Values And Accuracy
Frequency Range:
10 to 75 hertz
Accuracy:
±0.01 hertz, ±1 least significant digit at 25
C
Sensing Input
3-wire:
Phase A – B
4-wire:
Phase A – Neutral
Minimum Frequency Tracking Voltage:
10 V RMS
Calculated Values And Accuracy
Demand
Range:
0.1 to 1.5 nominal
Type:
Exponential
Accuracy:
±1% of reading ± 1 digit at 25
C
Temperature Dependence:
±0.02% per
C
Interval:
1 to 60 minutes
True Power
Range:
5 Ampere CT:
-7,500 kW to +7,500 kW
1 Ampere CT:
-1,500 kW to + 1,500 kW
Accuracy:
±1% at unity power factor
Reactive Power
Range:
5 Ampere CT:
-7,500 kvar to +7,500 kvar
1 Ampere CT:
-1,500 kvar to +1,500 kvar
Accuracy:
±1% at zero power factor
Energy Data Reporting
Range:
5 Ampere Unit:
100MWh
1 Ampere Unit:
100MWh
Units of Measure:
Kilo, Mega, Giga
Rollover value of Registers:
100,000
Accuracy:
±1% at unity power factor
