ABB RELION REB500 Operation Manual page 59

1MRK 505 400-UEN B
Signal "17610_PDF ext release" configured?
IEC18000306 V1 EN-US
Figure 20: Block diagram of breaker pole discrepancy protection
To verify a pole discrepancy, the current criteria and the condition of the circuit-breaker
auxiliary contacts must be taken into account (external plausibility check).
that the output signal of the function is enabled by the binary input 17610_PDF ext release.
If the input 17610_PDF ext release is not configured, the function is enabled by default.
The breaker pole discrepancy protection does not intertrip the respective busbar zone.
17610_PDF ext release
L L
1
L L
1
IEC18000339 V1 EN-US
Figure 21:
Distributed busbar protection REB500
Technical manual

I < pd * I
set max
I

max
I < pd * I
set max
(greatest of

I < pd * I
I , I , I )
set max
L3
L1 L2
I > I
max mset
17610_PDF ext release
&
17205_Block PDF
1
37205_Block PDF
∆pd : Pole discrepancy factor (for example, 0.6 × I
set
I : Pole discrepancy setting (for example, 0.2 × I
mset
L CB CLOSE signal
2 3
L CB OPEN signal
2 3
+
14000032-IEC18000339-1-en.vsd
External plausibility check
Under certain conditions, the breaker at the remote end or possibly some other
breaker may be involved without a plausibility check.
© Copyright 2019 ABB. All rights reserved
PDF timer
1
t 0
&
1
PDF blocked
Additional protection options
27805_PDF start
27305_PDF Trip
47305_PDF Trip
&
27105_PDF TRIP
27405_PDF blocked
12000182-IEC18000306-1-en.vsd
)
max
)
N
Figure 20 shows
Section 6
53