Rockwell-automation 592- E300 Overload Relay User Manual Manual de usuario descargar pdf (Pagina 168)

168 Rockwell Automation Publication 193-UM015B-EN-P - June 2014

Chapter 5 Protective Trip and Warning Functions

Table 164 - Over kVAR Consumed Trip Level (Parameter 392)

Over kVAR Consumed Warning

The E300 Electronic Overload Relay will indicate an Over kVAR warning if:

• No warning currently exists

• Over kVAR Consumed Warning is enabled

• Current is present

• Voltage is present

• Over kVAR Consumed Inhibit Time has expired

• The total reactive power (kVAR) consumed is equal to or greater than the

er kVAR Consumed Warning Level

When the Over kVAR Consumed Warning conditions are satisfied, the:

• TRIP/WARN LED will flash a yellow 2-long / 4-short blink pattern

• Bit 3 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

Over kVAR Consumed Warn Level

Over kVAR Consumed Warn Level (Parameter 393) 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.

Table 165 - Over kVAR Consumed Warn Level (Parameter 393)

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 Over 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 over reactive power (kVAR) consumed condition until

the Over kVAR Consumed Inhibit Time expires.