Power Solid PRO 3.3 10KVA, Руководство пользователя

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12. Operation in maintenance mode
This operation should only be performed by maintenance personnel or qualified
technicians.
When the UPS needs to repair or service and the load could not be shut off, the
UPS needs to be put into maintenance mode.
1) First, switch off the UPS.
2) Then, remove the cover of maintenance bypass switch on the panel.
3) Turn the maintenance switch to “BPS” position.
3-5. Parallel Operation
1. Parallel system initial startup
Please make sure that all of the running UPSs are parallel models and have the
same configuration.
1) Turn on each UPS in AC mode respectively (Refer to section 3-4(1)). Then,
measure the inverter output voltage of each phase for each UPS with a multi-
meter. Calibrate the inverter output voltage by configuring inverter voltage
adjustment (Refer to SETTING

ADVANCE

SYS PARAMETERS

VOL
CALI screen) in LCD menu until the inverter output voltage difference of each
UPS is within 1V or less.
2) Turn off each UPS (Refer to section 3-4-7.). Then, follow the wiring procedure
in section 2-4.
3) Remove the cover of parallel share current cable port on the UPS, connect
each UPS one by one with the parallel cable and share current cable, and
then replace the cover.
4) Turn on the parallel system in AC mode
a) Turn on the line input breaker of each UPS. If using dual-input unit,
please also turn on bypass input breaker. After all UPSs enter into
bypass mode, measure the output voltage between two UPSs for the
same phase to make sure the phase sequence is correct. If these two
voltage differences are near to zero, that means all connections are met.
Otherwise, please check if the wirings are connected correctly.
b) Turn on the output breaker of each UPS.
c) Turn on each UPS in turns. After a while, the UPSs should enter into AC
mode synchronously and then, the parallel system is now complete.
5) Turn on the parallel system in Battery mode
a) Turn on the battery breaker (only available in long-run model) and
external output breaker of each UPS.
b) Turn on any UPS. A few seconds later, the UPS will enter into battery
mode.
c) Turn on the next UPS in sequence until all the UPSs enter into Battery
mode and add to the parallel system. Now the parallel system is now
complete.
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