Posts Tagged ‘electricity’

Hurrican Bawbag leaves tens of thousands without electricity.

Friday, December 9th, 2011

As hurricane swept across Scotland and Northern England, thousands of homes, schools and businesses are without electricity as powerlines were brought down. The Scottish government have estimates some 60,000 homes are without power. Electricity provide Scottish Hydro said at least 50,000 of it’s customers were without power and it expected this number to get worse before it gets better.

Those homes reliant on sustainable wind energy haven’t faired much better. The Ardrossan Wind Farm in North Ayrshire is all but destroyed as the wind turbines caught fire.  Farms and small holdings in rural areas have faired better with many farmers owning PTO generators and standby diesel generators to ensure precious livestock are still adequately cared for in the event of power cut.

Automatic Transfer Switch or ATS

Wednesday, July 13th, 2011

Many homes in many parts of the world use backup generators  or standby generators as a means of providing electricity to their homes in the event of power cuts and outages.

The ATS acts as a bridge between the backup generator, the home and the utility company. The workings of the ATS can be simplified as follows.

When the an electrical outage occurs the ATS signals the generator too start, once the generator is ready to start producing electricity, the ATS reacts by breaking the connection between the homes electrical panel and the utility company and then connecting the backup generator to the home.

Whilst the backup generator is supplying the homes electricity it is completely isolated from the utility companies electrical distribution system. The isolation is for two reasons, it protects the generator from being overloaded and stops energising of the service wiring.

When the mains electricity supply is restored, the ATS reverses the process, disconnects the link between the home and the backup generator and then reconnects the home the utility company.