Blocking Of The Auto Recloser; Control Of The Auto Reclosing Dead Time For Shot 1; Long Trip Signal; Maximum Number Of Reclosing Shots - ABB RER670 Applications Manual
Relion 670 series, railway application
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Also See for RER670:
- Commissioning manual (216 pages) ,
- Installation manual (112 pages) ,
- Communication protocol manual (48 pages)
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1MRK 506 375-UEN A
12.2.2.4
12.2.2.5
12.2.2.6
12.2.2.7
12.2.2.8
Railway application RER670 2.2 IEC
Application manual
circuit breaker open an auto reclosing start pulse is generated and latched in the
function, subject to the usual checks. The auto reclosing sequence continues then as
usual. Signals from manual tripping and other functions, which shall prevent auto
reclosing, need to be connected to the INHIBIT input.
Blocking of the auto recloser
Auto reclose attempts are expected to take place only for faults on the own line.
The auto recloser must be blocked by activating the INHIBIT input for the
following conditions:
•
Tripping from delayed distance protection zones
•
Tripping from back-up protection functions
•
Tripping from breaker failure function
•
Intertrip received from remote end circuit breaker failure function
•
Busbar protection tripping
Depending of the starting principle (general trip or only instantaneous trip) adopted
above the delayed and back-up zones might not be required. Breaker failure trip
local and remote must however always be connected.
Control of the auto reclosing dead time for shot 1
For the first shot, there is a separate setting for the dead time, t1. If no particular
input signal is applied, the auto reclosing dead time t1 will be used. There is also a
separate time setting facility for high-speed auto reclosing without synchrocheck,
t1_HS, available for use when required. It is activated by the STARTHS input.
Long trip signal
When start pulse duration signal is longer than set maximum start pulse duration,
the auto reclosing sequence interrupts in the same way as for a signal to the
INHIBIT input.
Maximum number of reclosing shots
The maximum number of auto reclosing shots in an auto reclosing cycle is selected
by the setting NoOfShots. A maximum of five shots can be done.
Auto reclosing reclaim timer
The tReclaim timer defines the time it takes from issue of the breaker closing
command, until the auto recloser resets. Should a new trip occur during this time, it
is treated as a continuation of the first fault. The reclaim timer is started when the
circuit breaker closing command is given.
Section 12
Control
M12391-103 v4
M12391-113 v5
M12391-117 v4
M12391-120 v7
M12391-202 v4
227
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