135
INFOSEC UPS SYSTEM
–
15, rue du Moulin
–
44880 Sautron, France
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www.infosec-ups.com
Hotline : +33 (0)2 40 76 15 82
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Fax : +33(0)2 40 94 29 51
–
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02 22 AA 59 203 08
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
➔
Maintainer
➔
VOL CALI
➔
Inverter 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
the external 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.
If you would like to have more information regarding the parallel operation, please contact your
supplier or service center for detail parallel operation instruction.
2. Add new units into the parallel system
1) You can not add new unit into the parallel system when whole system is running. You must cut
off the load and shutdown the system.
2) Make sure all of the UPS are the parallel models, and follow the wiring reference in section
2-4.
3) Install the new parallel system as per section 3-5.
3. Remove units from the parallel system
There are two methods to remove units from the parallel system:
First method:
4) Touch
“CONTROL”
➔
“Turn off UPS” and select
“Yes” to turn of
the UPS. Then, the UPS will
enter into Bypass mode or No Output mode without output.
5) Turn off the output breaker of this unit, and then turn off the input breaker of this unit.
6) Turn off the battery breaker (for long-run model) and remove the parallel and share current
cables. And then remove the unit from the parallel system.