New phase con­trol re­lays ex­tended

DEMM Engineering & Manufacturing - - ELECTRICAL TECHNOLOGY -

Wieland Elec­tric phase con­trol re­lays have been ex­tended by two new types of f lare – the Con­trol P3-L and the Con­trol P3-LTN.

They are de­signed for phase and volt­age con­trol im­bal­ances. A phase im­bal­ance is caused by un­equal load dis­tri­bu­tion within the in­di­vid­ual phases. In this case, part of the en­ergy is con­verted into re­ac­tive power mean­ing the ef­fi­ciency of a con­nected mo­tor and the ther­mal load will in­crease un­til break­down.

The f lare Con­trol P3-L mon­i­tors phase fail­ure, phase se­quence and phase po­si­tion in three-phase sys­tems within a volt­age range from 200 to 500V AC.

The f lare Con­trol P3-LTN pro­vides additional con­trol func­tions such as the volt­age bal­ance con­trol with both the re­sponse de­lay and the con­nected power volt­age be­ing ad­justable.

These de­vices are equipped with a changeover and sev­eral di­ag­nos­tic LEDs.

demm.co.nz/reader-en­quiry #D131234a

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