Rockwell Automation 592- E300 Overload Relay User Manual - Manual (Page 94)

94 Rockwell Automation Publication 193-UM015B-EN-P - June 2014
Chapter 5 Protective Trip and Warning Functions
Table 75 - Ground Fault Trip Delay (Parameter 243)
Ground Fault Trip Level
Ground Fault Trip Level (Parameter 244) allows the user to define the ground
fault current in which the E300 Electronic Overload Relay will trip and is
adjustable from:
• 0.500…5.00 A (Internal)
• 0.020…5.00 A (External)
Table 76 - Ground Fault Trip Level (Parameter 244)
Ground Fault Warning
The E300 Electronic Overload Relay will indicate a ground fault warning if:
• No warning currently exists
• Ground Fault Warning is enabled
• Current is present
• Ground Fault Inhibit Time has expired
Ground Fault Trip Delay (Parameter 243)
Default Value 0.5
Minimum Value 0.0
Maximum Value 25.0
Parameter Type USINT
Size (Bytes) 1
Scaling Factor 10
Units Sec
Ground Fault Trip Level (Parameter 244)
Default Value 2.5
Minimum Value 0.5 (internal); 0.02 (external)
Maximum Value 5.00
Parameter Type UINT
Size (Bytes) 2
Scaling Factor 100
Units Amps
IMPORTANT The ground fault inhibit timer starts after the maximum phase load current
transitions from 0 A to 30% of the device’s minimum FLA rating or the ground
fault current is greater than or equal to 50% of the device’s minimum ground
fault current rating. The E300 Electronic Overload Relay does not begin
monitoring for a ground fault condition until the Ground Fault Current Inhibit
Time expires.