Supervision functions
Table 62. Current circuit supervision (CCRDIF)
Characteristic
Value
Operate time
1)
< 30 ms
1)
Including the delay of the output contact.
Table 63. Current circuit supervision (CCRDIF) main settings
Parameter
Values (Range)
Unit
Description
Start value
0.05...0.20
x I
n
Minimum operate current
differential level
Maximum operate current
1.00...5.00
x I
n
Block of the function at
high phase current
Table 64. Fuse failure supervision (SEQRFUF)
Characteristic
Value
Operate time
1)
• NPS function
U
Fault
= 1.1 x set
Neg Seq
voltage Lev
< 33 ms
U
Fault
= 5.0 x set
Neg Seq
voltage Lev
< 18 ms
• Delta function
ΔU = 1.1 x set
Voltage
change rate
< 30 ms
ΔU = 2.0 x set
Voltage
change rate
< 24 ms
1)
Includes the delay of the signal output contact, f
n
= 50 Hz, fault voltage with nominal frequency injected from random phase angle, results based on
statistical distribution of 1000 measurements
Voltage Protection and Control
1MRS757058 D
REU615
Product version: 4.0
42
ABB
Summary of Contents for REU615
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