8 MB - POWERLAB

Functionsand characteristicsSource-changeover systems 0PresentationPB100844 PB100843PB100845Service sector:b hospital operating roomsb safety systems for tall buildingsb computer rooms (banks, insurance companies, etc.)b lighting systems in shopping centres.Manual source-changeover systemsA manual source-changeover system is made up of:b 2 devices (for connecting rod systems) or 2 to 3 devices (for cable systems)b a connecting-rod or cable type mechanical interlocking system.Remote-operated source-changeover systemsThis is the most commonly employed system. No intervention by human operators isrequired. The switch from the normal to the replacement source is controlledelectrically.A remote-operated source-changeover system is made up of two or three circuitbreakers or switch-disconnectors linked by:b an electrical interlocking system implemented in a number of mannersb a mechanical interlocking system that protects against the consequences of anelectrical malfunction and inhibits incorrect manual operation.Automatic source-changeover systemsAn automatic controller may be added to a remote-operated source-changeoversystem for automatic source control according to programmable operating modes.This solution provides optimal energy management:b switching to a replacement source depending on any external conditionsb management of power sourcesb regulationb emergency source replacement, etc.A communications function for dialogue with a supervisor is available for theautomatic controller.Communication optionThe communication option must not be used to control the opening or closing ofsource-changeover system circuit breakers. It should be used only to transmitmeasurement data or circuit-breaker status.The eco COM option is perfectly suited to these equipments.Industry:b assembly linesb propulsion systems on shipsb essential auxiliaries in thermal power stations...PB100847 PB100846Infrastructure:b port and railway installationsb runway lighting systemsb control systems for military installations...53