SYNCHROTACT® 5 Optimum reliability

From a synchronizing device, it is expected to close the

power circuit breaker at the correct time but also that, if

required, paralleling can take place whenever permissible.

Although the series connection of the output contacts of two

independently-functioning channels (dual-channel system),

which is usual in synchronizing systems, greatly increases

security against incorrect paralleling, it necessarily leads to a

reduction in availability.

High levels of safety and availability can be achieved by using

a second, redundant synchronizing system. If system 1 can

no longer synchronize, it is possible to do so by switching

over to the second system.

In this configuration, two automatic dual-channel systems

are housed in one unit. Normally, the output contacts of both

systems are connected in series (4 channels!). One of the

two systems can be bridged by means of a system selector switch.