Manual 37138C
ESDR 4T - Current Differential Protection Relay
© Woodward
Page 23/46
Message list:
Fault condition
Fault message
Differential current in Phase L1 exceeds the warning threshold (monitoring level 1)
L1: Diff.curr 1
Differential current in Phase L2 exceeds the warning threshold (monitoring level 1)
L2: Diff.curr 1
Differential current in Phase L3 exceeds the warning threshold (monitoring level 1)
L3: Diff.curr 1
Differential current in Phase L1 exceeds the tripping threshold (monitoring level2)
L1: Diff.curr 2
Differential current in Phase L2 exceeds the tripping threshold (monitoring level2)
L2: Diff.curr 2
Differential current in phase L3 exceeds the tripping threshold (monitoring level 2)
L3: Diff.curr 2
Differential current in Phase L1 exceeds the rated current (monitoring level 2)
L1:Idiff.2 Id>In
Differential current in Phase L2 exceeds the rated current (monitoring level 2)
L2:Idiff.2 Id>In
Differential current in Phase L3 exceeds the rated current (monitoring level 2)
L3:Idiff.2 Id>In
Current in Phase L1 low voltage side exceeds 5 times the rated current (1A or 5A)
L1: range Ius>
Current in Phase L2 low voltage side exceeds 5 times the rated current (1A or 5A)
L2: range Ius>
Current in Phase L3 low voltage side exceeds 5 times the rated current (1A or 5A)
L3: range Ius>
Current in Phase L1 high voltage side exceeds 5 times the rated current (1A or 5A)
L1: range Ios>
Current in Phase L2 high voltage side exceeds 5 times the rated current (1A or 5A)
L2: range Ios>
Current in Phase L3 high voltage side exceeds 5 times the rated current (1A or 5A)
L3: range Ios>
These alarm texts are displayed sequentially by pressing the Message
↓
button repeatedly. After the last alarm
message has been displayed, the controller returns to the monitoring screen.