402 Rockwell Automation Publication 193-UM015E-EN-P - October 2015
Chapter 6 Protective Trip and Warning Functions
Table 336 - Under kVAR Generated Trip Level (Parameter 396)
Under kVAR Generated Warning
The E300 relay indicates an Under kVAR Generated warning if:
• No warning currently exists
• Under kVAR Generated Warning is enabled
• Current is present
• Voltage is present
• Under kVAR Generated Inhibit Time has expired
• The total reactive power (kVAR) generated is equal to or less than the
U
nde
r kVAR Generated Warning Level
When the Under kVAR Generated Warning conditions are satisfied, the:
• T
RIP/WARN LED flashes a yellow 2-long / 5-short blink pattern
• Bit 4 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
Under kVAR Generated Warn Level
Under kVAR Generated Warn Level (Parameter 397) allows you to define the
reactive power (kVAR) generated at which the E300 relay indicates a warning. It
is user-adjustable from 0…2,000,000 kW.
Default Value 0.000
Minimum Value 0.000
Maximum Value 2000000.000
Parameter Type DINT
Size (Bytes) 4
Scaling Factor 1000
Units kVAR
The Under kVAR Generated 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 relay does not begin
monitoring for an under reactive power (kVAR) generated condition until the
Under kVAR Generated Inhibit Time expires.
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