Supervision Functions; Current Circuit Supervision (Ccrdif); Current Circuit Supervision (Ccrdif) Main Settings; Fuse Failure Supervision (Seqrfuf) - ABB REU615 Product Manual

Voltage Protection and Control
REU615
Product version: 4.0

Supervision functions

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