ABB Relion 650 Series Technical Manual page 302

Section 10
Control
Name Values (Range)
t5 3Ph 0.00 - 6000.00
tInhibit 0.000 - 60.000
Follow CB Disabled
Enabled
AutoCont Disabled
Enabled
tAutoContWait 0.000 - 60.000
UnsucClByCBChk NoCBCheck
CB check
BlockByUnsucCl Disabled
Enabled
ZoneSeqCoord Disabled
Enabled
10.2.6 Operation principle
10.2.6.1 Auto-reclosing operation
Operation of the automatic reclosing can be set to Off or On via the setting parameters and
through external control. With the setting
with the setting
External ctrl , the activation/deactivation is made by input signal pulses, for example, from a
control system.
When the function is set
input conditions such as 52a and CBREADY must also be fulfilled. At this point the automatic
recloser is prepared to start the reclosing cycle and the output signal READY on the STBRREC (79)
function block is activated (high).
10.2.6.2 Initiate auto-reclosing and conditions for initiation of a reclosing cycle
The usual way in which to initiate a reclosing cycle, or sequence, is to initiate it when a line
protection tripping has occurred, by applying a signal to the RI input.
For a new auto-reclosing cycle to be started, a number of conditions need to be met. 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 initiation was applied
• No blocking or inhibit signal shall be present.
After the initiate 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.
To initiate auto-reclosing by CB position Open instead of from protection trip signals, one has to
configure the CB Open position signal to inputs 52a and RI and set a parameter
Enabled and CBAuxContType = NormClosed (normally closed, 52b). One also has to configure and
connect signals from manual trip commands to input INHIBIT.
296
Unit Step
s 0.01
s 0.001
- -
- -
s 0.001
- -
- -
- -
Disabled and Enabled
Operation = Disabled the function is deactivated. With the setting Operation =
Enabled and is operative the output SETON is activated (high). Other
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Default Description
30.00 Open time for shot 5, three-phase
5.000 Inhibit reclosing reset time
Disabled Advance to next shot if CB has been closed
during dead time
Disabled Continue with next reclosing-shot if
breaker did not close
2.000 Wait time after close command before
proceeding to next shot
NoCBCheck Unsuccessful closing signal obtained by
checking CB position
Disabled Block AR at unsuccessful reclosing
Disabled Coordination of down stream devices to
local protection unit's AR
Operation = Enabled , the function is activated while
1MRK 506 326-UUS B
M12394-11 v5
M12394-15 v6
StartByCBOpen =
Line distance protection REL650
Technical manual