Rockwell Automation 592- E300 Overload Relay User Manual - Manual (Page 162)

162 Rockwell Automation Publication 193-UM015B-EN-P - June 2014
Chapter 5 Protective Trip and Warning Functions
Reactive Power (kVAR) Protection
The E300 Electronic Overload Relay has the capability to protect against reactive
power (kVAR) for specific applications that require the monitoring of both
voltage and current. The user can protect or issue a warning in the event that the
reactive power (kVAR) of an electric motor is either too high or too low.
Under kVAR Consumed Inhibit Time
Under kVAR Consumed Inhibit Time (Parameter 386) allows the installer to
inhibit an under reactive power (kVAR) consumed trip and warning from
occurring during the motor starting sequence. It is adjustable from 0…250
seconds.
Table 156 - Under kVAR Consumed Inhibit Time (Parameter 386)
Over kVAR Consumed Inhibit Time
Over kVAR Consumed Inhibit Time (Parameter 390) allows the installer to
inhibit an over reactive power (kVAR) consumed trip and warning from
occurring during the motor starting sequence. It is adjustable from 0…250
seconds.
Table 157 - Over kVAR Consumed Inhibit Time (Parameter 390)
IMPORTANT The Over kW Warning function does not include a time delay feature. Once the
Over kW Inhibit Time has expired, the Over kW Warning indication is
instantaneous.
Default Value 10
Minimum Value 0
Maximum Value 250
Parameter Type USINT
Size (Bytes) 1
Scaling Factor 1
Units Sec
Default Value 10
Minimum Value 0
Maximum Value 250
Parameter Type USINT
Size (Bytes) 1
Scaling Factor 1
Units Sec