ABB REF615 - Supervision Functions; Current Circuit Supervision (CCRDIF); Current Circuit Supervision (CCRDIF) Main Settings; Fuse Failure Supervision (SEQRFUF)

ABB 38
Feeder Protection and Control
REF615
Product version: 2.0
1MRS756379 D
Supervision functions
Table 64. Current circuit supervision (CCRDIF)
Operate time
1)
< 30 ms
1) Including the delay of the output contact
Table 65. 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 66. Fuse failure supervision (SEQRFUF)
Operate time
1)
NPS function:
U
Fault
= 1.1 x set Neg Seq
voltage Lev
U
Fault
= 5.0 x set Neg Seq
voltage Lev
< 33 ms
< 18 ms
Delta function:
∆U = 1.1 x set Voltage
change rate
∆U = 2.0 x set Voltage
change rate
<30 ms
<24 ms
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
Table 63. Three-phase power and energy (PEMMXU)
Operation
accuracy
At all three currents in range 0.10…1.20 x I
n
At all three voltages in range 0.50…1.15 x U
n
At the frequency f
n
±1Hz
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
harmonics
DFT: -50dB at f = n x f
n
, where n = 2, 3, 4, 5,…