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STATYS 200-1000A - Ref.:OPMSTA200910-GB_06
The role of STATYS is to monitor the alternate source, to detect any failure of the preferred source and, if this should
occur, to ensure that the load is automatically transferred to the alternate source.
4. OPERATING PRINCIPLE
STATYS is an autonomous electrical device which permits the seamless transfer of the load between a synchronous
alternate electrical source S1 and another alternate source S2 (see functional diagram § 6).
Under normal operation, STATYS supplies the load from the preferred source. This is selected by the user, according
to on-site restrictions.
Two transfer modes are possible:
– manual transfer mode, controlled by the operator locally or remotely by means of a BMS or other communicating system
– automatic transfer mode, which occurs when an out-of-tolerance voltage is detected on the preferred source The
changeover is made without source overlap according to the Break-Before-Make principle.
NOTE: The preferred source (source 1 or source 2) is selected using the keyboard and this selection is displayed on-screen.
3. THE ROLE OF STATYS
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