412 Rockwell Automation Publication 193-UM015E-EN-P - October 2015
Chapter 6 Protective Trip and Warning Functions
Power Factor Protection
The E300 relay has the capability to help protect against power factor for specific
applications that require the monitoring of both voltage and current. You can
help protect or issue a warning if the power factor of an electric motor is either
too high or too low.
Under Power Factor Lagging Inhibit Time
Under Power Factor Lagging Inhibit Time (Parameter 410) allows you to inhibit
an under power factor lagging trip and warning from occurring during the motor
starting sequence. It is adjustable from 0…250 seconds.
Table 349 - Under Power Factor Lagging Inhibit Time (Parameter 410)
Over Power Factor Lagging Inhibit Time
Over Power Factor Lagging Inhibit Time (Parameter 414) allows you to inhibit
an over power factor lagging trip and warning from occurring during the motor
starting sequence. It is adjustable from 0…250 seconds.
Table 350 - Over Power Factor Lagging Inhibit Time (Parameter 414)
The Over kVA Warning function does not include a time delay feature. Once the
Over kVA Inhibit Time has expired, the Over kVA Warning indication is
instantaneous.
Default Value 10
Minimum Value 0
Maximum Value 250
Parameter Type USINT
Size (Bytes) 1
Scaling Factor 1
Units Seconds
Default Value 10
Minimum Value 0
Maximum Value 250
Parameter Type USINT
Size (Bytes) 1
Scaling Factor 1
Units Seconds
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