Specification for automatic change-over contactors for emergency lighting systems.

Informationen über die Norm:

Bezeichnung normen: BS 764:1990
Ausgabedatum normen: 31.5.1990
Zahl der Seiten: 14
Gewicht ca.: 42 g (0.09 Pfund)
Land: Britische technische Norm
Kategorie: Technische Normen BS

Die Annotation des Normtextes BS 764:1990 :

Design and performance requirements for d.c. and single-phase a.c. double-pole change-over contactors for low-voltages up to 250 volts and a range of standard current ratings, which are used to provide the automatic transfer of current supplied to safety lights from the normal source to an alternative source when the normal source fails; reconnection is automatic when the normal supply conditions are restored. Status: Confirmed