INFOSEC UPS SYSTEM E4 LCD Evolution 10K TM Manuel Utilisateur page 75

NOTE: It's not allowed to share one battery pack for long-run UPSs in parallel system. Each UPS should be
connected to its battery pack.
b) Turn on any UPS. A few seconds later, the UPS will enter to battery mode.
c) Then, turn on another UPS. A few seconds later, the UPS will enter to battery mode and add to the
parallel system.
d) If you have the third UPS, follow the same procedure of c). Then, the parallel system is complete.
If more detailed information is needed, please contact supplier or service center for parallel operation
instruction.
2. Add one new unit into the parallel system
1) You can not add one 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 refer to section 2-4.
3) Install the new parallel system refers to the previous section.
3. Remove one unit from the parallel system
There are two methods to remove one unit from the parallel system:
First method:
1) Press the "OFF" key twice and each time should be lasted for more than 0.5s. Then, the UPS will enter into
bypass mode or no output mode without output.
2) Turn off the output breaker and input breaker of this unit. If using 30KVA unit, please also turn off bypass
breaker.
3) After it shuts down, you can 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.
Second method:
1) If the bypass is abnormal, you can not remove the UPS without interruption. You must cut off the load and
shut down the system first.
2) Make sure the bypass setting is enabled in each UPS and then turn off the running system. All UPSs will
transfer to Bypass mode. Remove all the maintenance bypass covers and set the maintenance switches from
"UPS" to "BPS". Turn off all the input breakers and battery breakers in parallel system.
3) Turn off the output breaker and remove the parallel cable and share current cable of the UPS which you want
to remove. Then, remove it from parallel system.
4) Turn on the input breaker of the remaining UPS and the system will transfer to Bypass mode. Set the
maintenance switches from "BPS" to "UPS and put the maintenance bypass covers back.
5) Turn on the remaining UPS according to the previous section.
Warning:
● Before turning on the parallel system to activate inverter, make sure that all unit's maintenance switch at the
same position.
● When parallel system is turned on to work through inverter, please do not operate the maintenance switch of
any unit.
INFOSEC UPS SYSTEM – 4 rue de la Rigotière – 44700 Orvault – France – www.infosec-ups.com
Hot Line Tel : +33 (0)2 40 76 15 82 – fax : +33(0)2 40 94 29 51 – hotline@infosec.fr – 06 14 AA 59 203 46
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