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Functions
and characteristics
Source-changeover systems
Presentation
PB100843A
Manual source-changeover system
This is the most simple type. It is controlled manually by an operator and
consequently the time required to switch from the normal to the replacement source
can vary.
Amanual source-changeover system is made up of two or three mechanically
interlocked manually-operated circuit breakers or switch-disconnectors.
The interlocks prevent any paralleling, even transient, of the two sources.
Remote-operated source-changeover system
This is the most commonly employed system for devices with high ratings (above
400 A). No human intervention is required. Transfer from the normal to the
replacement source is controlled electrically.
A remote-controlled source-changeover system is made up of two or three circuit
breakers or switch-disconnectors linked by an electrical interlocking system that may
have different configurations. In addition, a mechanical interlocking system protects
against electrical malfunctions or incorrect manual operations.
Automatic source-changeover systems
An automatic controller may be added to a remote-operated source-changeover
system for automatic source control according to programmable operating modes.
This solution ensures optimum energy management:
transfer to a replacement source according to external requirements
b
b
management of power sources
b
b
regulation
b
b
emergency source replacement, etc.
b
b
The automatic controller may be fitted with an option for communication with a
supervisor.
Communication option
The communication option must not be used to control the opening or closing of
source-changeover system circuit breakers. It should be used only to transmit
measurement data or circuit-breaker status.
The eco COM option is perfectly suited to these equipments.
PB100844A
Commercial and service sector:
b
operating rooms in hospitals
b
safety systems for tall buildings
b
computer rooms (banks, insurance companies, etc.)
b
lighting systems in shopping centres…
PB100845A
Industry:
b
assembly lines
b
engine rooms on ships
b
critical auxiliaries in thermal power stations…
PB100846A
PB100847A
Infrastructures:
b
port and railway installations
b
runway lighting systems
b
control systems on military sites…
version: 8.3
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