Under reactive power consumed warning, Over reactive power consumed trip – Rockwell Automation 193-EC1_2_3_5, 193-ECPM,592-EC1_2_3_5 E3 and E3 Plus Solid-State Overload Relay User Manual User Manual
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Rockwell Automation Publication 193-UM002I-EN-P - December 2011
Chapter 3 Protective Trip & Warning Functions
UVARC Trip Delay, Parameter 250, allows the installer to define the time period
an under reactive power consumed condition must be present before a trip
occurs. It is adjustable from 0.1…25.0 seconds.
UVARC Trip Level, Parameter 251, allows the installer to define the total
reactive power consumed in which the E3 Plus Overload Relay will trip. It is
adjustable from 0…32767.
Under Reactive Power Consumed Warning
The E3 Overload Relay will immediately indicate an under reactive power
consumed warning condition if:
• no warning currently exists,
• Under Reactive Power Consumed Warning is enabled,
• UVARC Inhibit Time has expired, and
• Total Reactive Power is equal to or less than the UVARC Warn Level.
When the under reactive power consumed warning conditions are satisfied, the:
TRIP/WARN LED will flash an amber 2 long and 3 short blink pattern,
bit 2 in PW Warn Status, Parameter 228, will set to “1”, and
bit 1 of Device Status, Parameter 21, will set to “1”.
UVARC Warn Level, Parameter 252, allows the installer to define the total
reactive power consumed in which the E3 Plus Overload Relay will indicate a
warning and is adjustable from 0…32767.
Over Reactive Power Consumed Trip
The E3 Overload Relay will trip with an over reactive consumed power
indication if:
• no trip currently exists,
• Over Reactive Power Consumed protection is enabled,
• OVARC Inhibit Time has expired, and
• Total Reactive Power is equal to or greater than OVARC Trip Level for a
time period greater than the programmed OVARC Trip Delay.
When the over reactive power consumed trip conditions are satisfied, the:
• TRIP/WARN LED will flash a red 2 long and 4 short blink pattern,
• bit 3 in PW Trip Status, Parameter 227, will go to “1”,
• bit 0 of Device Status, Parameter 21, will go to “1”,
• Trip Relay contact will be open, and