No break automatic critical power protection

Power Continuity

Power Continuity

Bypass Switch Operating Instructions for typical Rackmount UPS System?

Proper procedure for operating a bypass switch on a UPS (Uninterruptible Power Supply). Key points include:

  1. Safety Notice: Do not operate the bypass switch if the UPS is in 'Battery Mode'.

  2. Bypass Operation: Consult with a UPS supplier before proceeding. Switch the UPS into static bypass mode, then turn the bypass switch to the bypass setting to power the load from the mains.

  3. Isolating the UPS: To isolate the UPS for maintenance, turn the bypass switch to the off-line position.

  4. Returning to Normal Mode: With the UPS off, switch the bypass to bypass mode, power the UPS, then switch the bypass back to on-line once the proper indicators (orange bypass light, green inverter light) are confirmed.

  5. Warnings: Following the procedure is crucial to prevent load interruptions and UPS damage. It must be done with a UPS Engineer present or under their guidance to avoid liability issues.

  6. Contact Information: Users can call for assistance with UPS bypass at the provided contact number.

Bypass switch must not to be operated if the UPS is in ‘Battery Mode’!

TO OPERATE BYPASS:-

Before proceeding speak with your UPS supplier and one of their engineers, as the exact procedure varies from UPS to UPS. Switch UPS into static bypass (often pressing on/off switch located at the top of the UPS). Then – turn the bypass switch to the bypass setting.

The load is now being powered from the raw mains. Note – the input to the UPS is still live (depending on the type of bypass switch). To isolate the unit for maintenance or removal turn the bypass switch clockwise to the off line position.

Power continuity ups system example
Power continuity external maintenance bypass

To return to normal mode:-
• With the UPS off, turn the bypass switch to the bypass position.
• The UPS will now power up. Because power has been introduced.
• The ‘bypass’ will now be showing orange, and the ‘inverter’ led will be off.
• At this point turn off the bypass switch to the on-line position, and then wait until the ‘inverter’ led is showing green.

On line position: – (normal condition)
When the manual bypass switch is in the on-line position, load is supported by the UPS.

The switch must be switched into the on-line position while the ‘bypass’ light is orange.
Warning! If the above procedure is not followed exactly the load on the output of the UPS may be interrupted and the UPS may be damaged.

All the above protocol MUST be carried out in conjunction with either a UPS Engineer present on site or under the guidance of a UPS Engineer. Most UPS companies will not accept any responsibility if this is not adhered with.

Power continuity ups and bypass switch

If you’re looking for a UPS Bypass, call us on 0845 055 8455, we’re here to help!