ABB SYNCHROTACT® CSS Synchronizing systems

SYNCHROTACT® CSS Application and functionality

SYNCHROTACT® CSS (Compact Synchronizing System) is a

pre-engineered synchronizing system, sold as a product.

Application

The use of the already planned and tested synchronizing

system saves all engineering costs and inreases safety.

SYNCHROTACT® CSS only needs to be installed, connected

and commissioned.

The system uses the proven and reliable SYNCHROTACT® 5

components and can be built into a 19" frame.

To ensure high availability of the plant, SYNCHROTACT®

CSS consists of a fully automatic and independent manual

synchronizing unit.

Different versions are available, either for one or for two

circuit breakers, and both either in single- or dual-channel

configuration.

The PC software, SynView, which is included in the delivery,

provides quick and simple commissioning.

Functionality

SYNCHROTACT® CSS supports the following operating

modes, which can be selected by means of a switch.

– Operating mode AUTO: generator voltage and frequency

are automatically matched by the synchronizing equipment.

The circuit breaker will be closed subsequently and exactly

with phase-coincidence, taking the breaker closing time into

consideration.

– Operating mode MAN: the functions are carried out

manually by means of push buttons on the front panel.

The necessary values are displayed on the synchronizing

instruments. The paralleling command is issued by holding

down the release button and pushing the command button if

phase-coincidence is reached.

– Operating mode TEST: this is identical to the AUTO-mode,

except for the paralleling command which is not sent to

the circuit breaker but displayed by the system only.

With models for two circuit breakers the paralleling point has

to be selected by means of the appropriate selector switch

before the synchronizing process is started.

Releasing by means of a key switch, the circuit breaker can

be closed even if one or both measuring voltages are dead

(dead bus).

Changing the control mode selection from «local» to «remote»

allows the use of automatic synchronizing from a remote location.