SOLA 4000 - Installation and Initial Start-Up
3 Additional Start-Up Proced. for Multi-Unit Systems
3.2 Start-Up Procedure for Parallel Systems
Repeat the procedure of section 2 individually for all units in the system, with the the other units off.
Ensure that the interconnecting BUS cables are connected accord- ing to section 1.10.1 and FIG 1.10.3.
•Open IRP, IRE, IB and IUG of the last unit checked with the procedure in section 2.
K• Ensure that no load is connected to the system output.
•Ensure that all IUG switches are open.
•Switch on the IRE switches of all units. Wait until all units give a flashing "U" indication on the display of the
•Close IUG on one unit only.
•At each unit in turn:
Measure across the output switch IUG from input to output of each phase.
?Is this voltage less than 2V.a.c for all three phases for every unit?
no The output power interconnections are incorrect and must be reconnected correctly. Switch off all units and the mains supply and recheck the connections.
Return to K
yes Continue.
•Close the IUG switches on all units. The static bypasses (SSB) will now be connected in parallel for all units.
•Close IRP of all units.
•When the front operating panel is initialised on all units (after 3 beeps), close the battery switches of the respective units.
•Press the "START" pushbutton on any one unit. The inverter will start and when synchronised to the bypass supply, transfer to the system output and all static bypass switches (SSB) will open.
•Press the "START" pushbutton on each successive unit in the system, each time checking that the SSI closes on the unit and that the system operates in parallel operation.
•Commutations to the bypass/inverter supplies may be checked by pressing the pushbutton on the CPH16
•Apply a load to the UPS system and check for correct sharing of the load currents on each phase. If
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