244 Rockwell Automation Publication 193-UM015D-EN-P - February 2015
Chapter 6 Protective Trip and Warning Functions
Table 298 - Over Power Factor Leading Trip Level (Parameter 424)
Over Power Factor Leading Warning
The E300 Electronic Overload Relay indicates 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 flashes a yellow 2-long / 12-short blink pattern
• Bit 11 in Power Warning Status (Parameter 12) sets to 1
• Bit 1 in Device Status 0 (Parameter 20) sets to 1
• Any relay outputs configured as a Warning Alarm closes
Over Power Factor Leading Warn Level
Over Power Factor Leading Warn Level (Parameter 425) allows you to define the
power factor leading at which the E300 Electronic Overload Relay indicates a
warning. It is user-adjustable from 0…2,000,000 kW.
Table 299 - 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 %
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 0 A
to 30% of the minimum FLA setting of the device. 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 %
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