Sices DST4600A, Руководство пользователя

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User’s Manual 27
The T1 and T2 times change according to the position of the key selector and if the engine is
running or dead:
SELECTOR ENGINE T1 T2
AUTO-TEST Dead P04 P05
1
MAN-PROG-OFF Dead P04 0 s
AUTO-TEST Running (operating speed) 2 s P05
MAN
2
Running (operating speed) 2 s 0 s
As you can see, the transitional mains failure is cancelled (2 seconds) with the engine running.
In such conditions, as soon as a mains failure occurs, if the selector is on AUTO the users are
switched on the generator.
In the same way, the transitional mains restoring is cancelled (0 seconds) only if the selector
is in OFF-PROG-
MAN, to avoid the engine starting or the users’ switching on the generator
set if going back to AUTO during the mains restoring.
Parameters used in the generator management:

P02: hysteresis (%)

P03: recognition threshold for generator’s voltage presence (V)

P11: protection threshold for minimum generator’s frequency (Hz)

P12: protection threshold for maximum generator’s frequency (Hz)

P13: protection threshold for minimum generator’s voltage (Hz)

P14: protection threshold for maximum generator’s voltage (Hz)
Six thresholds are defined in the generator management:

“Alive” generator threshold: P03 + (((P03 * P02) / 100) / 2)

“Dead” generator threshold: P03 – (((P03 * P02) / 100) / 2)

“UNDERFREQUENCY” threshold: P11

“OVERFREQUENCY” threshold: P12

“UNDERVOLTAGE” threshold: P13

“OVERVOLTAGE” threshold: P14
The generator is
considered “alive” if the voltage on all the existing phases is over the “alive”
generator threshold. It is considered “dead” if the voltage on at least one of the phases is under
the “dead” generator threshold. If no phase is under the “dead” generator threshold but at least
one phase is under the “alive” generator threshold, the generator keeps the previous
dead/alive status (hysteresis).
If the voltage on at least one of the phases is over the “OVERVOLTAGE” threshold, the
generator is considered “alive out of window”. Of course, the parameter P14 must be set in
order to be over the “alive” mains threshold.
1
Unusual case: in AUTO mode the engine is dead during the transitional mains restoration only in the event of starting
failure.
2
With selector on OFF-PROG the engine is not running.