Supervision Functions; Current Circuit Supervision (Ccrdif); Current Circuit Supervision (Ccrdif) Main Settings; Fuse Failure Supervision (Seqrfuf) - ABB REF615 Product Manual

Feeder Protection and Control
REF615
Product version: 2.0
Table 63. Three-phase power and energy (PEMMXU)
Operation At all three currents in range 0.10...1.20 x I
accuracy At all three voltages in range 0.50...1.15 x U
At the frequency f
Active power and energy in range |PF| > 0.71
Reactive power and energy in range |PF| < 0.71
±1.5% for power (S,P and Q)
±0.015 for power factor
±1.5% for energy
Suppression of DFT: -50dB at f = n x f
harmonics

Supervision functions

Table 64. Current circuit supervision (CCRDIF)
Operate time 1)
1) Including the delay of the output contact
Table 65. Current circuit supervision (CCRDIF) main settings
Parameter
Start value
Maximum operate current
Table 66. Fuse failure supervision (SEQRFUF)
Operate time
1)
1) Includes the delay of the signal output contact, fn = 50 Hz, fault voltage with nominal frequency injected from
random phase angle, results based on statistical distribution of 1000 measurements
38
±1Hz
n
, where n = 2, 3, 4, 5,...
n
< 30 ms
Values Unit
(Range)
0.05...0.20 x I
n
1.00...5.00 x I
n
NPS function:
U = 1.1 x set Neg Seq
Fault
voltage Lev
U = 5.0 x set Neg Seq
Fault
voltage Lev
Delta function:
∆U = 1.1 x set Voltage
change rate
∆U = 2.0 x set Voltage
change rate
1MRS756379 D
n
n
Description
Minimum operate current
differential level
Block of the function at
high phase current
< 33 ms
< 18 ms
<30 ms
<24 ms
ABB