Rockwell-automation 592- E300 Overload Relay User Manual Manual do Utilizador Página 191

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Rockwell Automation Publication 193-UM015B-EN-P - June 2014 191
Protective Trip and Warning Functions Chapter 5
Table 192 - Under Power Factor Leading Warn Level (Parameter 421)
Over Power Factor Leading Trip
The E300 Electronic Overload Relay will trip with an Over Power Factor
Leading indication if:
No trip currently exists
Over Power Factor Leading Trip is enabled
Current is present
Voltage is present
Over Power Factor Leading Inhibit Time has expired
The total power factor leading is greater than the Over Power Factor
L
e
ading Trip Level for a time period greater than the Over Power Factor
Leading Trip Delay.
If the E300 Electronic Overload Relay trips on an over power factor leading, the:
T
RIP/WARN LED status indicator will flash a red 2-long / 12-short
bl
ink pattern
Bit 11 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
P
r
otection Fault state (if so programmed)
Default Value 95
Minimum Value 100
Maximum Value 0
Parameter Type USINT
Size (Bytes) 1
Scaling Factor 1
Units %
IMPORTANT
The Under Power Factor Leading Warning function does not include a time
delay feature. Once the Under Power Factor Leading Inhibit Time has expired,
the Under Power Factor Leading Warning indication is instantaneous.
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