ABB Relion REB500, Руководство по эксплуатации продукта, Страница: 39 / 50

Distributed busbar protection REB500 1MRK 505 352-BEN
Product version: 8.2 Issued: 2016-03-01
Revision: -
ABB 39
Table 33. Check zone criterion 87CZ (PDIF)
Function/ Parameter Range/ Value Accuracy
Min. fault current pick-up setting (I
kmin
) neutral
current detection
500 to 6000 A in steps of 200 A ±5% of I
N
at I
kmin
< I
N
±5% of I
kmin
at I
kmin
> I
N
*)
Stabilizing factor (k) 0.0 to 0.9 in steps of 0.05 -
CT ratio per feeder 50 to 10 000/1 A,
50 to 10 000/5 A,
adjustable via HMI -
The check zone is used as an additional release criterion for busbar protection and operates zone-
independent.
*) For details about pickup accuracy see 1KHL020789-Aen-Verification-Pickup-Value
Recording facilities
Table 34. Event recorder
Event recorder Bay unit Central unit
System events
Protection events
Test events
100 1000
User activity events - 2048
Table 35. Disturbance recorder (RDRE)
Options analog channel f
n
Recording period Sample rate selectable
4 currents and
5 voltages 50 Hz
60 Hz 4000 Hz
4800 Hz 2000 Hz
2400 Hz 1000 Hz
1200 Hz
Standard X - 1.5 s 3 s 6 s
Extended X - 20 s 20 s 20 s
Number of disturbance records = total recording time / set recording period (max.40)
Buffer overflow behavior is first in first out.
Independent settings for pre-fault and post-fault period (min. setting 200 ms).
Format: COMTRADE 99
Table 36. Central disturbance recorder (RDRE)
Options analog channels Recording period (sample rate fixed)
Standard X 1.5 s
Extended X 20 s
Recording of differential and restraint currents per phase (max. 4) and per buszone (max 32)
Number of disturbance records = total recording time / set recording period (max.40)
Buffer overflow behavior is first in first out.
Independent settings for pre-fault and post-fault period (min. setting 200 ms).
Format: COMTRADE 99