Rockwell Automation 592- E300 Overload Relay User Manual - Manual (Page 165)

Rockwell Automation Publication 193-UM015B-EN-P - June 2014 165
Protective Trip and Warning Functions Chapter 5
Under kVAR Consumed Trip Level
Under kVAR Consumed Trip Level (Parameter 388) allows the installer to define
the reactive power (kVAR) consumed at which the E300 Electronic Overload
Relay will trip on an under reactive power (kVAR) consumed. It is user-adjustable
from 0…2,000,000 kW.
Table 161 - Under kVAR Consumed Trip Level (Parameter 388)
Under kVAR Consumed Warning
The E300 Electronic Overload Relay will indicate an Under kVAR Consumed
warning if:
• No warning currently exists
• Under kVAR Consumed Warning is enabled
• Current is present
• Voltage is present
• Under kVAR Consumed Inhibit Time has expired
• The total reactive power (kVAR) consumed is equal to or less than the
Under kVAR Consumed Warning Level
When the Under kVAR Consumed Warning conditions are satisfied, the:
• TRIP/WARN LED will flash a yellow 2-long / 3-short blink pattern
• Bit 2 in Power Warning Status (Parameter 12) will set to 1
• Bit 1 in Device Status 0 (Parameter 20) will set to 1
• Any relay outputs configured as a Warning Alarm will close
Under kVAR Consumed Warn Level
Under kVAR Consumed Warn Level (Parameter 389) allows the user to define
the reactive power (kVAR) consumed at which the E300 Electronic Overload
Relay will indicate 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
IMPORTANT The Under kVAR Consumed Inhibit Time starts after a phase voltage transitions
from 0V to 20V L-L and a phase of load current transitions from 0A to 30% of
the device’s minimum FLA setting. The E300 Electronic Overload Relay does not
begin monitoring for an under reactive power (kVAR) consumed condition until
the Under kVAR Consumed Inhibit Time expires.