Allen-Bradley E300 User Manual

Rockwell Automation Publication 193-UM015E-EN-P - October 2015 513
Metering and Diagnostics Chapter 8
When Single or Three Phase (Parameter 176) is set to Single Phase, Average L-N
Voltage is calculated as follows:
Average L-N Voltage = (L1-N Voltage + L2-N Voltage) / 2
Table 473 - Average L-N Voltage (Parameter 60)
Voltage Imbalance
Voltage Imbalance (Parameter 61) reports the percentage of uneven voltage being
supplied by the monitored power system. Voltage Imbalance is defined by the
following equation:
Voltage Imbalance = 100% * (Vd/Va)
where
Vd = Maximum L-L Voltage Deviation from the Average L-L Voltage
Va = Average L-L Voltage
Table 474 - Voltage Imbalance (Parameter 61)
Frequency
Frequency (Parameter 62) reports the voltage frequency in Hertz of the
monitored power system from the E300 relay Sensing Module.
Default Value 0.0
Minimum Value 0.0
Maximum Value 6553.5
Parameter Type UINT
Size (Bytes) 2
Scaling Factor 10
Units Volts
Default Value 0
Minimum Value 0
Maximum Value 200
Parameter Type UINT
Size (Bytes) 2
Scaling Factor 1
Units %

Allen-Bradley E300 Specifications

General

Type	Electronic Overload Relay
Mounting	DIN Rail or Panel Mount
Protection Class	IP20
Voltage Range	24…690 V AC/DC
Communication Options	EtherNet/IP, DeviceNet
Protection	Overload, phase loss, ground fault
Operating Temperature	-20°C to 60°C