External disconnection switches

Warning: The UPS has no built-in disconnect devices to switch off external AC (Q1 and Q5) and DC (Q7 and Q8) input power. Ensure that the disconnect devices are available as separate components for this installation.

Note: The installer must provide each external disconnect device for this UPS system with

labels displaying the following text: “Isolate the Uninterruptible Power Supply (UPS) as instructed in the User Guide before working on the circuit.”

Input/Output wiring precautions

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

Warning: Before you start the installation, verify that all AC and DC power source breakers are in the open position.

Warning: Supply the UPS from a 3 × 400/230 V, L1, L2, L3, N, PE source or a high- impedance grounded system.

Caution: All wiring to be in accordance with applicable national and/or local electrical wiring rules.

Note: Use only copper conductors.

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Symmetra MW II 1200 kW 3 x 400/230 V Installation - 990-1979E-001

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APC MW II manual External disconnection switches, Input/Output wiring precautions