XMART Optima 33 30K - Manual (Page 14)

USER MANUAL - OPTIMA-33 10K / 20K / 30K
www.xmart-ups.com 130612-OPTIMA-33 10K/20K (ENGLISH) - 12
5.- UPS INSTALLATION: PARALLEL UPS - TERMINAL BLOCK
GENERAL COMMENTS FOR PARALLEL SYSTEMS
* Parallel Installation allow up to 3 units in parallel.
* All units must have similar control board firmware version. If all UPS belong to same manufacturing batch, firmware will be the same. If
units below to different manufacturing batches, please contact your distributor to ask about compatibility to connect in parallel.
* All units in parallel must be configured with same parameters.
* Units to work in parallel must be connected as indicated in this section.
* Parallel system must be configured and started up according to instructions given dedicated section of this manual.
* Any mistake in connection, configuration or starting up procedure could produce permanent damage UPS
PARALLEL UPS CONNECTION
• Make sure the UPS is Off before starting the installation
• Remember to check all wires to be connected (including external batteries)
are not powered before manipulating them.
UPS TERMINAL BLOCK PREPARATION
Remove cover of terminal block at the UPS rear panel, identified as 10 in rear panel section of this manual
UPS INPUT AND OUTPUT CONNECTIONS
Connect input and output ground wires to proper place on the UPS chassis on both sides of terminal blocks. Ground wires must be FIRST to be
connected and LAST to be disconnected. Refer to below figure.
a) Grounding Wires: Connect AC Input and Output ground of both UPS according to figures.
b) AC Input Wires: AC Input wires must come from individual electrical circuit breakers on electrical panel board before being connected
to UPS terminal block.
c) AC Output Wires: AC output wires must be connected directly to external circuit breakers of bigger capacity.
d) If UPS is EX model, external battery banks must be connected to dedicated connector located in rear panel of UPS.
e) Control Cables for Parallel Connection: Connect Parallel Cable and shared current according to figures.
WARNING – EXTERNAL BATTERIES:
If UPS to be connected in parallel have external batteries it is mandatory each UPS counts with its own battery pack. Parallel
connection cannot be performed if only one of two (or two or three) UPS have external batteries. Permanent damages will be
produced in UPS if this warning is not followed.