Start Auto-Reclosing From Cb Open Information; Blocking Of The Autorecloser; Control Of The Auto-Reclosing Open Time For Shot 1 - ABB RELION 650 Series Applications Manual

Section 12
Control
• CBREADY, CB ready for a reclosing cycle, for example, charged operating gear.
• CBPOS to ensure that the CB was closed when the line fault occurred and start was
applied.
• No signal at input INHIBIT that is, no blocking or inhibit signal present. After the start has
been accepted, it is latched in and an internal signal "Started" is set. It can be interrupted
by certain events, like an "Inhibit" signal.
12.2.2.3

Start auto-reclosing from CB open information

If a user wants to initiate auto-reclosing from the "CB open" position instead of from
protection trip signals, the function offers such a possibility. This starting mode is selected
with the setting parameter
manual trip operations. Typically
contact of type NC (normally closed) is connected to inputs CBPOS and START. When the
signal changes from "CB closed" to "CB open" an auto-reclosing start pulse is generated and
latched in the function, subject to the usual checks. Then the reclosing sequence continues as
usual. One needs to connect signals from manual tripping and other functions, which shall not
be reclosed automatically to the input INHIBIT.
12.2.2.4

Blocking of the autorecloser

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 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.
12.2.2.5

Control of the auto-reclosing open time for shot 1

Up to four different time settings can be used for the first shot, and one extension time. There
are separate settings for single-, two- and three-phase auto-reclosing open time,
2Ph, t1 3Ph . If no particular input signal is applied, and an auto-reclosing program with single-
phase reclosing is selected, the auto-reclosing open time
inputs TR2P or TR3P is activated in connection with the start, the auto-reclosing open time for
two-phase or three-phase reclosing is used. There is also a separate time setting facility for
three-phase high-speed auto-reclosing without Synchrocheck,
required. It is activated by the STARTHS input.
An auto-reclosing open time extension delay,
delay. It is intended to come into use if the communication channel for permissive line
protection is lost. In such a case there can be a significant time difference in fault clearance at
the two ends of the line. A longer "auto-reclosing open time" can then be useful. This extension
time is controlled by setting parameter
function is used the autorecloser start must also be allowed from distance protection Zone 2
time delayed trip.
220
StartByCBOpen = On . It is then necessary to block reclosing for all
CBAuxContType = NormClosed is also set and a CB auxiliary
tExtended t1 , can be added to the normal shot 1
Extended t1=O n and the input PLCLOST. If this
1MRK 505 363-UEN A
t1 1Ph will be used. If one of the
t1 3PhHS , available for use when
Application manual
M12391-100 v5
M12391-103 v3
M12391-113 v4
t1 1Ph, t1