Application

The digital annunciator unit is used in a variety of applications requiring

supervision of alarm and signalling contacts in power plants, substations

and industrial process installations. The alarm unit is also approved for

use in off-shore installations and marine applications.

Further, the annunciator unit can be used in any application where on/off

signals are to be supervised.

The annunciator unit provides immediate fault recognition, fault identification

and visual and audible alarm in an abnormal process situation.

The annunciator unit also provides a means for subsequent fault analyses,

which means that corrective measures can be carried out without delay and

full control of the process can be maintained.

The annunciator units can be used as indepen dent stand-alone units,

or they can be connected together via a fibre-optic bus to form complete

supervision, event sequence reporting and data acquisition systems.

The annunciator unit is a member of SPACOM, the ultimate integrated

secondary equipment system for power systems.