Rockwell Automation Publication 193-UM015E-EN-P - October 2015 363
Protective Trip and Warning Functions Chapter 6
L3 Line Loss Trip Delay
L3 Line Loss Trip Delay (Parameter 288) allows you to define the time period an
L3 Line Loss condition must be present before a trip occurs. It is adjustable from
0.1…25.0 seconds.
Table 285 - L3 Line Loss Trip Delay (Parameter 288)
L3 Line Loss Warning
The E300 relay indicates an L3 Line Loss warning if:
• No warning currently exists
The Protection Fault State of Relay 0, Relay 1, Relay 2, Digital Module 1 Output
Relays, Digital Module 2 Output Relays, Digital Module 3 Output Relays, and
Digital Module 4 Output Relays are defined by the respective parameters:
• Output PT00 Protection Fault Action (Parameter 304)
• Output PT00 Protection Fault Value (Parameter 305)
• Output PT01 Protection Fault Action (Parameter 310)
• Output PT01 Protection Fault Value (Parameter 311)
• Output PT02 Protection Fault Action (Parameter 316)
• Output PT02 Protection Fault Value (Parameter 317)
• Output Digital Module 1 Protection Fault Action (Parameter 322)
• Output Digital Module 1 Protection Fault Value (Parameter 323)
• Output Digital Module 2 Protection Fault Action (Parameter 328)
• Output Digital Module 2 Protection Fault Value (Parameter 329)
• Output Digital Module 3 Protection Fault Action (Parameter 334)
• Output Digital Module 3 Protection Fault Value (Parameter 335)
• Output Digital Module 4 Protection Fault Action (Parameter 340)
• Output Digital Module 4 Protection Fault Value (Parameter 342)
Default Value 1.0
Minimum Value 0.1
Maximum Value 25.0
Parameter Type USINT
Size (Bytes) 1
Scaling Factor 10
Units Seconds
The Line Loss Inhibit Timer starts when L1, L2, or L3 Line Loss protection is
activated by a programmed digital input (see Input Assignment Parameters
196-201). The E300 relay does not begin monitoring for Line Loss condition
until the Line Loss Inhibit Timer expires.
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