Arcteq AQ-S215, Инструкция по эксплуатации

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3. The circuit breaker is opened and the I> stage's START signal is released and simultaneously
REQ1 trip signal for auto-reclosing is released. The auto-recloser function starts calculating
the SSho hot1 Dead T t1 Dead Time ime to close the breaker.
4. The SSho hot1 Dead T t1 Dead Time ime (200 ms) is exceeded and the auto-recloser function sends a "Close"
request to the object breaker: the conditions are met and the breaker's "Close" command is
sent to the breaker's close coil.
5. The circuit breaker is closed and since fault was not cleared, a new pick-up of I> is detected.
A "Close" command is dropped after the breaker's "Closed" indication is received and the
auto-recloser function starts calculating the SSho hot1 R t1 Reclaim eclaim TTime ime simultaneously with the
SSho hot1 Ar t1 Arcing T cing Time ime.
6. The SSho hot1 Ar t1 Arcing T cing Time ime (200 ms) is exceeded which means that the fault is not cleared and
the function sends an "Open" command to the breaker. The function deactivates the SSho hot1 t1
Running Running signal and instead activates the SSho hot2 Running t2 Running signal.
7. The circuit breaker opens and the SSho hot2 Dead T t2 Dead Time ime calculation begins.
8. The SSho hot2 Dead T t2 Dead Time ime (120 s) is exceeded and the auto-recloser function sends a "Close"
command to the breaker.
9. The circuit breaker is closed towards the fault since it was not cleared by Shot 2. The I> stage
picks up and starts calculating the SSho hot2 Ar t2 Arcing T cing Time ime for the Final Trip. The "Close" command
is dropped after the the breaker's "Closed" indication is received. The auto-recloser function
also starts calculating the SSho hot2 R t2 Reclaim T eclaim Time ime.
10. The SSho hot2 Ar t2 Arcing T cing Time ime (200 ms) is exceeded and and the REQ1 request is given to the
function. However, as the function is in the process of calculating the SSho hot2 R t2 Reclaim T eclaim Time ime
when it receives this request, the function tries to move on to the next available shot. Alas,
this scheme does not have any more available shots and so the function begins the FFinal T inal Trip rip
state and drops the AR Running AR Running, SSho hot2 Running t2 Running and AR1 AR1 R Request equested ed signals. The function
enters the AR L AR Lock-out ock-out state to prevent any further requests for reclosing.
11. The circuit breaker is opened and the I> function's START signal is released, and
simultaneously the REQ1 trip signal for auto-reclosing is released. The function is now in a
steady lock-out state and waits for the user to manually reset and re-initialize the function by
closing the breaker.
Auto-recloser sequence from Start with two shots (high-speed fails, time-delayed
succeeds).
This auto-recloser scheme has the same starters and shots as the previous example. The setting and
signals are also the same. However, in this example the fault persists the high-speed shot but is cleared
by the time-delayed shot.
Figure. 5.4.4 - 99. Settings for I> with two shots.
This type of sequence (i.e. two shots required to clear the fault) represents 10...15 % of all faults that
occur in MV overhead line networks.
A AQ Q-S215 -S215
Instruction manual
Version: 2.04
149