Tri Power X33 Mod HP Manual | Rev 1.20 | © Alpha Technologies GmbH 2013
Operating
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Tri Power X33 Mod HP
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5. Installation
WARNING
The instructions in this chapter are not addressed to a normal operator but to a specialized technician, authorised
to work only if he uses the Personal Protective Gear mentioned in Chapter 3.
5.1
Safety rules and regulations
Before starting installation please read and apply the following:
1. It is necessary to ensure that the distribution panel, to which the UPS is going to be connected, has a proper connec-
tion to the earth circuit and adequate protection, as required by law.
2. Only the fixed type of the UPS Tri Power X33 Mod HP units must be installed with a thermal circuit breaker
upstream. Connection of the unit to the mains using a traditional plug is not allowed.
3. The mains supply panel or disconnecting device, must be installed near the equipment and easy to access.
4. Upstream UPS the can be dangerous voltage if unit is switched on. To avoid this a Backfeed Protection Unitor has to
be installed upstram UPS (follow circuit diagram next page).
5. If there is no Backfeed Protection Unit is installed a warning label must be affixed on all mains supply isolating swit-
ches installed far away from the UPS area to remind assistance personnel that the circuit is connected to a UPS. The
label must give the following message (or the equivalent):
ISOLATE THE UPS UNIT BEFORE WORKING ON
THIS CIRCUIT!
UPS TRI POWER X33 MOD HP is equipped with an auxilary contact to activate an extern device of the external Backfeed
Protection Unit. This auxilary contact is a relay with contacts C/NC/NO. The terminal is mounted on the AC connecting
terminal on the bottom an is written “BACKFEED PROTECTION”.
If the UPS detect a backfeed voltage the realy is energiesed. This gives the extenal device the possibility to disconnect
the input lines upstream (Backfeed Protection Unit is an optinal feature and not part of the unit). A possible circuit dia-
gramm is given on the following page.
Technical specification relay contact:
• Maximum voltage: 250 Vac
• Maximum Current: 5A