Rockwell-automation 592- E300 Overload Relay User Manual Uživatelský manuál Strana 172

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172 Rockwell Automation Publication 193-UM015B-EN-P - June 2014
Chapter 5 Protective Trip and Warning Functions
Table 168 - Under kVAR Generated Warn Level (Parameter 397)
Over kVAR Generated Trip
The E300 Electronic Overload Relay will trip with an Over kVAR Generated
indication if:
No trip currently exists
Over kVAR Generated Trip is enabled
Current is present
Voltage is present
Over kVAR Generated Inhibit Time has expired
The total reactive power (kVAR) generated is greater than the Over
kVAR Generated Trip Level for a time period greater than the Over kVAR
G
e
nerated Trip Delay.
If the E300 Electronic Overload Relay trips on an over reactive power (kVAR)
gene
rated, the:
TRIP/WARN LED status indicator will flash a red 2-long / 6-short blink
pa
ttern
Bit
5 in Power Trip Status (Parameter 6) will set to 1
Bit 0 in Device Status 0 (Parameter 20) will set to 1
Any relay outputs configured as a Trip Relay will open
Any relay outputs configured as a Control Relay will open
Any relay outputs configured as a Trip Alarm will close
Any relay outputs configured as a Normal Relay will be placed in their
Pr
otection Fault state (if so programmed)
Default Value 0.000
Minimum Value 0.000
Maximum Value 2000000.000
Parameter Type DINT
Size (Bytes) 4
Scaling Factor 1000
Units kVAR
IMPORTANT
The Under kVAR Generated Warning function does not include a time delay
feature. Once the Under kVAR generated Inhibit Time has expired, the Under
kVAR Generated Warning indication is instantaneous.
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