Welcome to the new Schneider Electric Community

It's your place to connect with experts and peers, get continuous support, and share knowledge.

  • Explore the new navigation for even easier access to your community.
  • Bookmark and use our new, easy-to-remember address (community.se.com).
  • Get ready for more content and an improved experience.

Contact SchneiderCommunity.Support@se.com if you have any questions.

Close
Invite a Co-worker
Send a co-worker an invite to the Exchange portal.Just enter their email address and we’ll connect them to register. After joining, they will belong to the same company.
Send Invite Cancel
84257members
353361posts

Generator Switchover Protection

APC UPS for Home and Office Forum

Schneider Electric support forum for our APC offers including Home Office UPS, Surge Protectors, UTS, software and services and associated products designed to share knowledge, installation, and configuration.

Solved
BillP
Administrator Administrator
Administrator
0 Likes
4
231

Generator Switchover Protection

This question was originally posted by Ken on APC forums on 2/11/2021


Hi:

In our small building, when we test the backup generator, one building device (entrance intercom) will fail and need to be reset. This is annoying, but I'd like to 

This is due either to the momentary power dropout (around one second) during switchover, or to spikes during generator connect/disconnect.

The device that fails gets its power from a 16v / 40Vac transformer, and has no battery backup onboard.

A simple surge protector should take care of the spikes, but I'd like to find a way to bridge the dropout period (approx 1 second).  I'd also like an extremely low maintenance device for this purpose.

Any thoughts?

Many thanks in advance. 

Tags (3)

Accepted Solutions
BillP
Administrator Administrator
Administrator
0 Likes
0
231

Re: Generator Switchover Protection

This reply was originally posted by Ken on APC forums on 2/15/2021


Hi Gavan:

Many thanks.

I am leaning towards having an electrician install a standalone surge protection device since this is inexpensive and low-to-no maintenance. 

See Answer In Context

4 Replies 4
BillP
Administrator Administrator
Administrator
0 Likes
0
231

Re: Generator Switchover Protection

This reply was originally posted by Gavan on APC forums on 2/12/2021


Is the intercom powered by an AC outlet, if so then a small UPS should help.

A BackupUPS has a change over time of 12-15ms, Smart-UPS 8-12ms and a Smart-UPS online has a 0ms switch over.

-Gavan

BillP
Administrator Administrator
Administrator
0 Likes
0
231

Re: Generator Switchover Protection

This reply was originally posted by Ken on APC forums on 2/12/2021


Hi Gavan:

Thanks for your reply.

The device is powered from a circuit breaker panel, via a 16v 40vac transformer.

BillP
Administrator Administrator
Administrator
0 Likes
0
231

Re: Generator Switchover Protection

This reply was originally posted by Gavan on APC forums on 2/15/2021


If it's powered directly from a breaker panel and not from a plug then I'd advise you talk to an electrician who might be able to find some way to connect a UPS to the input side of the transformer, assuming the input of the transformer is mains voltage.

- Gavan 

BillP
Administrator Administrator
Administrator
0 Likes
0
232

Re: Generator Switchover Protection

This reply was originally posted by Ken on APC forums on 2/15/2021


Hi Gavan:

Many thanks.

I am leaning towards having an electrician install a standalone surge protection device since this is inexpensive and low-to-no maintenance.