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Series RTA/900 Three-phase Motor Start up Reactor

Single-phase Motor Start up Reactors

  • Single-phase motor start up reactors built according to IEC 61558-2-20
  • Three-phase operating voltage 400V
  • Designed for 3 startings per hour, of 5 secs. each
  • 30% voltage fall, for a 70% reduced motor starting
  • Class H total high casehardening varnish dipped and oven dried
  • Particularly indicated for submerged pump startings; also useful for transformer connection take-off reduction
  • Different starting values, voltages and powers are available upon request

The RTA/900 Family has also been designed to limit motor inrush current, using a 30% motor voltage reduction. The standard operating period is of 20 sec. max, with a 4 times per hour repetition. If different periods and more startings are needed, it is necessary to state the following, at the moment of ordering: Operation period, total startings per hour, voltage fall and electrical parameters of the motor (voltage, rated and inrush currents, type of mechanical load)