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Control Chapter 11
Verifying settings by secondary
injection
11.2.1 Preparation of the verification
Procedure
1. Check the function settings.
In the HMI tree they are found under:
Settings\Setting Group N\Control\Autorecloser(RREC,79)
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 unit can be
a reminder to restore normal settings after which a verification test should
be performed.
2. Decide if a synchronism check (SYNC) shall be included in the test.
If SYNC as an internal function or external device is not operated by the
injection, it may be connected as a permanent high signal or controlled
by a switch.
3. Read and make notes of the reclosing operation counters.
Local HMI tree:
Test\Function status\Control\Auto recloser\Autorecloser(RREC,79)
Possibly reset the counters to zero. Counters are reset in the RESET
menu.
4. Make arrangements for the simulation of the CB, e.g. as in figure 35.
5. Make arrangements for indication, recording and time measure-
ments.
The signals for CBPOS, START, CLOSECB, READY and other rele-
vant signals should preferably be arranged for event recording with time
tagging. If that is not possible, other means of time measurement and re-
cording should be arranged.
11.2.2 Switching the auto-reclosing function On and Off
Procedure
1. Set the Operation setting to Off and check the state.
2. Set the Operation setting to On and check the state, including SET-
ON and AR-READY.
The CB should be closed and ready.
3. If external control Off/On is connected, check that it works.
Set Operation to ExternalCtrl, and use that control to switch On and Off,
and check the state of the function
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