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Electrical Installation: Electrical Wiring Principle
8 Symmetra MW 800 kW 3 × 400/230 V Installation - 990-1510D
External disconnection switches
Input/Output wiring precautions
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.
Note
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 Operation Manual
before working on circuit.”
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!
Before starting installation, check and test that all AC and DC power source
breakers are in 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.