Initiate Auto-Reclosing From Cb Open Information; Blocking Of The Autorecloser; Control Of The Auto-Reclosing Open Time For Shot 1 - ABB Relion 670 Series Applications Manual

Section 13
Control
also use the input RI_HS (Initiate High-Speed Reclosing). When initiating RI_HS, the auto-reclosing
open time for three-phase shot 1,
synchrocheck condition.
A number of conditions need to be fulfilled for the start to be accepted and a new auto-reclosing
cycle to be started. They are linked to dedicated inputs. The inputs are:
• CBREADY, CB ready for a reclosing cycle, for example, charged operating gear.
• 52a 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.
13.2.2.3

Initiate 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
operations. Typically
NC (normally closed, 52b) is connected to inputs 52a and RI. 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.
13.2.2.4

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.
13.2.2.5

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,
If no particular input signal is applied, and an auto-reclosing program with single-phase reclosing
is selected, the auto-reclosing open time
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,
RI_HS input.
274
t1 3PhHS is used and the closing is done without checking the
StartByCBOpen = Enabled . It is then necessary to block reclosing for all manual trip
CBAuxContType = NormClosed is also set and a CB auxiliary contact of type
t1 3PhHS , available for use when required. It is activated by the
t1 1Ph will be used. If one of the inputs TR2P or TR3P is
1MRK 511 358-UUS A
M12391-100 v5
M12391-103 v3
M12391-113 v4
t1 1Ph, t1 2Ph, t1 3Ph .
Application manual