♦Place the “maintenance switch”manual bypass on the back of the UPS in the “bypass” position. To do this, first remove the 4 screws of the cover (no.3, p. 26/27).

♦Put the mains input miniature circuit breaker (no.2, p. 26/27) in the “OFF” position.

Connect the UPS terminal “ / PE “ (earth)

with

the

corresponding earth terminal in the distribution cabinet.

 

Connect the supply cable from the MI distribution to the terminals 1.1 of the UPS that are marked with “INPUT”:

/ PE = Ground

N= Neutral conductor

L1/L2/L3 = Phases

Check the jumper between “JP1” and “JP2” (terminal designation “JUMPER”).

Only remove the cable if you want to use the UPS in parallel operation with further PROTECT 1. units of the same type (see also chapter 9).

5.4.3Preparation of the Output Cabling

Before you connect the loads to the UPS, the nominal output listed on the nameplate must be greater than or equal to the sum of the load power outputs.

The output of the PROTECT 1. should supply further separate circuits in a subdistribution. Make sure that the fuse protection is selectively designed (see also chapter 5.2.2).

For the connection between the PROTECT 1. and the subdistribution, cable cross-sections acc. to the table “Connection Cross-Sections and Fuse Protection” on p. 30 must be used. In the subdistribution, note at least the following information:

♦Maximum permissible total load

♦Maximum permissible load of the individual load circuits

In the case of a common distribution cabinet

i (circuits with mains as well as UPS voltage), label each circuit with the respective supply (mains or UPS).

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