Automatic transfering of power supplies in HV and LV networks

Nowadays even temporary loss of electrical power is a major handicap for firms whose production processes brook no interruption as well as for high-rise buildings whose safety circuits must be operational at all times.
Consequently, transfering of main supply sources onto replacement or emergency sources has proved to be a function used with increasing regularity in electrical distribution, public and private alike.
- This «Cahier Technique» begins with an examination of the difficulties of implementing such switching devices, together with the possible technical solutions.
- This section is followed by a presentation of the various switching types backed up by practical examples.
- Finally, a table summarises the above and gives the main areas of application.