Rockwell Automation 592- E300 Overload Relay User Manual - Manual (Page 193)

Rockwell Automation Publication 193-UM015B-EN-P - June 2014 193
Protective Trip and Warning Functions Chapter 5
Table 194 - Over Power Factor Leading Trip Level (Parameter 424)
Over Power Factor Leading Warning
The E300 Electronic Overload Relay will indicate an Over kVAR warning if:
• No warning currently exists
• Over Power Factor Leading Warning is enabled
• Current is present
• Voltage is present
• Over Power Factor Leading Inhibit Time has expired
• The total power factor leading is equal to or greater than the Over Power
Factor Leading Warning Level
When the Over Power Factor Leading Warning conditions are satisfied, the:
• TRIP/WARN LED will flash a yellow 2-long / 12-short blink pattern
• Bit 11 in Power Warning Status (Parameter 12) will set to 1
• Bit 1 in Device Status 0 (Parameter 20) will set to 1
• Any relay outputs configured as a Warning Alarm will close
Over Power Factor Leading Warn Level
Over Power Factor Leading Warn Level (Parameter 425) allows the user to define
the power factor leading at which the E300 Electronic Overload Relay will
indicate a warning. It is user-adjustable from 0…2,000,000 kW.
Table 195 - Over Power Factor Leading Warn Level (Parameter 425)
Default Value 95
Minimum Value 100
Maximum Value 0
Parameter Type USINT
Size (Bytes) 1
Scaling Factor 1
Units %
IMPORTANT The Over Power Factor Leading Inhibit Time starts after a phase voltage
transitions from 0V to 20V L-L and a phase of load current transitions from 0A
to 30% of the device’s minimum FLA setting. The E300 Electronic Overload
Relay does not begin monitoring for an over power factor leading condition
until the Over Power Factor Leading Inhibit Time expires.
Default Value 90
Minimum Value 100
Maximum Value 0
Parameter Type USINT
Size (Bytes) 1
Scaling Factor 1
Units %