11.10.2.1 Preparation of the verification
M12400-40 v8
1. Check the function settings on the local HMI under Main menu/
Settings/IED Settings/Contr
ol/Autorecloser79,5(0–>1)/
SMBRREC:x(79,5(0–>)):x
If any timer settings are reduced to speed up or facilitate the testing, they shall
be set to normal after testing. A temporary label on the IED can be a reminder
to restore normal settings after which a verification test should be performed.
2. Decide if a synchrocheck function SESRSYN shall be included in the test.
If SESRSYN as an internal function or external device is not operated by the
injection, input signal SYNC must be connected as a permanent high signal or
controlled by a switch.
3. Read and make notes of the reclosing operation counters on the local HMI
under Main menu/Test/Function status/Control/AutoRecloser79,5(0–>1)/
SMBRREC(79,5(0–>1)):x
Possibly reset the counters to Zero. Counters are reset in the reset menu.
4. Make arrangements for the simulation of the CB, for example as in Figure
53.
5. Make arrangements for indication, recording and time measurements.
The signals for
CBCLOSED, START, CLOSECB, READY and other
relevant signals should preferably be arranged for event recording with time
tagging. If that is not possible, other means of time measurement and
recording should be arranged.
11.10.2.2 Switching the auto recloser to On and Off
On
and
Off
M12400-79 v9
1. Set the Operation setting to Off and check the state.
2. Set the Operation setting to On and check the state, including SETON and
READY.
The circuit breaker should be closed and ready.
3. If external control inputs OFF/ON are used, check that they work. Set
ExternalCtrl = On and use the control inputs to switch On and Off, and check
the state of the function.
11.10.2.3 Verifying the auto recloser
M12400-91 v12
Select the test cases to be run according to what is applicable to the particular
application. It can be, for example,
• three-phase single-shot auto reclosing
• two-shot reclosing
• single-phase and three-phase single-shot auto reclosing
Below, a case with single-phase and three-phase single-shot auto reclosing is
described.
Section 11 1MRK 505 378-UEN A
Testing functionality by secondary injection
232 Line differential protection RED670 2.2 IEC
Commissioning manual
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