Signals; Bay / Station Protection À Function Overlapping Signals - ABB REB500 Applications Manual

1MRK 505 353-UEN
2.3
2.3.1
2.3.1.1
2.3.1.2
Application Manual
Bay protection functions REB500

Signals

Bay / Station Protection à function overlapping signals
Signal designations
The BP/ SP function overlapping (general) signals correspond to the signal num-
bers nomenclature of the station protection system (for details see Technical Man-
ual REB500)
Example: 19205_Block BP (5 digit signal number)
Outputs generated by BP and used as SP inputs (default signals)
Table 5 BU_ BP outputs to SP inputs (default signals)
Signal
11120_BP External TRIP
11125_BP External TRIP BB zone
13210_BP Block BFP
13610_BP Trip transfer
13761_BP Start BFP L1L2L3_5
13770..13780_BP Start BFP Lp
13785_BP Start BFP L1L2L3
Description
This is the tripping signal generated by bay protection of
REB500. It trips faults on a line with the aid of the REB500
tripping contact. Tripping thus takes account of the busbar
configuration at the time. The signal is activated by the bay
protection directly and does not therefore appear as binary
input signal.
This is a tripping signal generated by the bay protection of
REB500 which is used to trip the entire bus zone to which the
fbay is connected. The tripping command is applied to all the
bay units of the bus zone and sections of busbars intercon-
nected by an isolator (intertripping).
This signal is directly activated by the bay protection and
doesn't therefore appear as a binary input signal. The opera-
tion of the breaker failure protection of the corresponding
feeder is blocked. When the blocking signal is cancelled and
providing a starting signal is present and current is flowing, the
timers start again at t = 0.
Reserved for the special application "trip transfer".
This signal is directly activated by the bay protection unit and
does not therefore appear as a binary input signal.
This signal is functionally identical to signal "13760_Start BFP
L1L2L3_5", but it is directly activated by the bay protection and
does not therefore appear as a binary input signal.
Breaker failure protection with phase-selective starting (p = 1,
2 or 3). The breaker failure protection timer starts when this
signal is activated by BP functions and the BFP measures a
current in the corresponding phase. This signal is directly
activated by the bay protection and does not therefore appear
as a binary input signal.
Breaker failure protection with three-phase starting. The
breaker failure protection timer starts when this signal is acti-
vated and the BFP measures a current in any phase.
This signal is directly activated by the bay protection and does
not therefore appear as a binary input signal.
Section 2
Overview
9