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External Bypass Static Switch Wiring
WARNING!
Before starting installation, check and test that all AC and DC power source
breakers are in open position.
WARNING!
Use only manual reset protection as input over-current protection.
WARNING!
Over-current protection required by national wiring rules.
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.
CAUTION!
The External Bypass Static Switch is not provided with built-in backfeed protection.
Use suitable breakers with a minimum of 0.8 in/20 mm air gap and trip function. The
breaker is controlled from the External Bypass SSW and will be tripped in case of
backfeed.
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.”
Note
The installation of the External Bypass Static Switch must comply with local and national
regulations.
Note
Run matched set of phase cables in the same cable run(s).
Do not separate phases into different cable runs.
Note
Use only copper conductors.