American Power Conversion MW External disconnection switches, Input/Output wiring precautions

Electrical Installation: Typical UPS Wiring Principle

External disconnection switches

WARNING!

The UPS has no internal manual disconnect devices to switch off external AC (Q1 and Q5) and DC (Q7 and Q8) input power. Ensure that disconnection devices are available as separate components for this installation.

The installer must provide each external disconnection device for this UPS system with labels displaying the following text:

“Isolate the Uninterruptible Power Supply (UPS) as instructed in the User Guide before Note working on circuit.”

Input/Output wiring precautions

WARNING!

Only personnel trained in the construction and operation of the equipment, and the electrical and mechanical hazards involved, may install or remove system components.

WARNING!

Supply the UPS from a dedicated, grounded, 3-wire Wye service.

CAUTION!

All wiring must be in accordance with applicable national and/or local electrical codes.

Use only UL-approved cable lugs.

Note

Use only UL-approved cables. Use only stranded copper conductors. Refer to National Electric Code for wiring and protection. Refer to bolt and lug table in the “Specifications” section.

Note

8 Symmetra MW 1000 kW 480 V Installation - 990-4112E