ABB Relion REB500 Product Manual page 38
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Also See for Relion REB500:
- Technical manual (194 pages) ,
- Operation manual (110 pages) ,
- Applications manual (108 pages)
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Distributed busbar protection REB500
Product version: 8.2
Table 29.
Overcurrent Protection 51 (PTOC)
Function/ Parameter
Characteristic
Operate current
Time delay
Reset ratio
Reset time
Table 30.
Breaker pole discrepancy 51/62PD (PTOC)
Function/ Parameter
Operate current
Time delay
Discrepancy factor
For feeders with single phase tripping and autoreclosure, the time setting for the breaker pole discrepancy protection
must be greater than the reclosure time. The discrepancy factor is the maximum permissible difference between the
amplitudes of two phases.
Table 31.
Current release criterion 51 (PTOC)
Function/ Parameter
Operate current
The current release criterion only allows the trip of a circuit breaker if the feeder current value is above the setting value
of the enabling current. This value can be individually selected for each bay.
Table 32.
Voltage release criteria 27/59 (PTOV/PTUV)
Function/ Parameter
Operate voltage U<
Operate voltage U
>
0
If the voltage release criteria are not activated the tripping command ("21110_TRIP") is given independent from voltage
(standard setting).
The voltage release criteria are used as additional criteria for busbar protection (as well as for the other station
protection functions) and operates per zone. They can be used as U< or U
38
Range/ Value
definite time
0.1 to 20 x I
in steps of 0.1 x I
N
10 ms to 20 s in steps of 10 ms
95%
20 to 50 ms at I
= 1.2 – 20 x I
k
for f
= 50, 60 Hz
N
Range/ Value
0.1 I
to 2.0 x I
in steps of 0.1 x I
N
N
100 ms to 10000 ms in steps of 100 ms
0.01 to 0.99 x I
max
I
max
Range/ Value
0.1 to 4.0 x I
in steps of 0.1 x I
N
Range/ Value
0.2 to 1.0 x U
in steps of 0.05 x U
N
0.1 to 1.0 x U
in steps of 0.05 x U
N
1MRK 505 352-BEN
Issued: 2016-03-01
Accuracy
-
±5% of I
N
±5% of I
-
±4% of I
-±1% of I
-
N
Accuracy
,
±5% of I
N
±5% of I
-
-
in steps of 0.01 x
Accuracy
±5% of I
N
±5% of I
Accuracy
±5% of U
N
N
±5% of 0.2 U
at U
N
N
±5% of U
at U
Set
Set
> or in combination.
0
Revision: -
at I
< I
N
set
N
³ I
at I
set
set
N
at I
< I
N
Set
N
³ I
at I
Set
Set
N
at I
< I
N
Set
N
³ I
at I
Set
Set
N
at I
< I
N
Set
N
at I
> I
Set
Set
N
< 0.2 U
Set
N
> 0.2 U
N
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