AEC IST5 Series, Service Manual

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5. Check the phase sequence.
6. Repeat steps 4-5 for output cables.
7. Replace the rear board and tighten the screws
Use the cable clips to stabilize the cables when the connections are done.
WARNING: Make sure that the loads are isolated from the UPS output if they
are not ready to be connected.
WARNING: Make sure that the cables are connected properly before UPS is
started. Additionally, check if there are galvanic isolation transformers at
input of UPS and consider the local directions.
WARNING: Check the grounding before starting the UPS. Wrong works or
grounding on UPS or other devices of installation may be hazardous. Wrong
works and grounding may damage UPS and another system on the
installation.
3.1.5.4 Battery connections
You can find explanations about installation procedures and connections of internal and external
batteries in this section.
3.1.5.4.1 Internal Battery connection (10-15-20-30KVA)
Battery installation procedure
Read the following steps to connect the internal batteries properly.