ABB REL 501-C1 2.5, Technical Reference Manual

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Dead line detection (DLD) Chapter 7
Power system supervision
Table 140: Output signals for the DLD (DLD--) function block
1.6 Setting parameters
Path in local HMI: Settings/Functions/Groupn/DeadLineDet
Table 141: Setting parameters for the dead line detection DLD (DLD--) function
1.7 Technical data
Table 142: DLD - Dead line detection
Signal Description
START Dead line condition detected in all three phases
STIL1 Current below set value phase L1
STIL2 Current below set value phase L2
STIL3 Current below set value phase L3
STUL1 Voltage below set value phase L1
STUL2 Voltage below set value phase L2
STUL3 Voltage below set value phase L3
STPH Dead phase condition detected in at least one phase
Parameter Range Default Unit Description
Operation Off / On Off - Operating mode for DLD function
U< 10 - 100
Step: 1 70 % of U1b Operating phase voltage (undervoltage
function)
IP< 5 - 100
Step: 1 20 % of I1b Operating phase current (undercurrent
function)
Function Setting range Accuracy
Automatic check of dead
line condition Operate phase current, IP< (5-100) % of I1b in steps
of 1%
±
2.5 % of I
r
Operate phase voltage, U< (10-100) % of U1b in
steps of 1%
±
2.5 % of U
r