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New phase controllers aid management of phase and voltage control imbalances

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article image Wieland Electric’s phase control relay

Treotham introduces a new range of phase control relays from Wieland Electric, designed for phase and voltage control imbalances in industrial application environments.

Wieland Electric’s phase control relays range has been extended by two new types of flare – the Control P3-L and the Control P3-LTN. 

Unequal load distribution within the individual phases cause phase imbalances wherein 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 flare Control P3-L, the basic version monitors phase failure, phase sequence and phase position in three-phase systems within a voltage range from 200 to 500V AC.

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

The phase control relays have a width of 22.5mm. These devices are equipped with a changeover and several diagnostic LEDs enabling a selective error search. 

Wieland Electric’s new phase control relays have been approved in accordance with standards including UL/CE for application worldwide. 

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