Rockwell Automation 592- E300 Overload Relay User Manual - Manual (Page 181)

Rockwell Automation Publication 193-UM015B-EN-P - June 2014 181
Protective Trip and Warning Functions Chapter 5
Power Factor Protection
The E300 Electronic Overload Relay has the capability to protect against power
factor 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 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 the installer 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 180 - Under Power Factor Lagging Inhibit Time (Parameter 410)
Over Power Factor Lagging Inhibit Time
Over Power Factor Lagging Inhibit Time (Parameter 414) allows the installer 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 181 - Over Power Factor Lagging Inhibit Time (Parameter 414)
IMPORTANT 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 Sec
Default Value 10
Minimum Value 0
Maximum Value 250
Parameter Type USINT
Size (Bytes) 1
Scaling Factor 1
Units Sec