Types W, VW, WV, VWV Three-Phase Hydraulic Reclosers

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Easily installed on poles and in substations, Types W-group three-phase, hydraulically controlled automatic circuit reclosers provide reliable, economic overcurrent protection. Available with vacuum or oil interruption, tripping is initiated by a series trip coil that releases the stored-energy trip mechanism when an overcurrent occurs. A closing solenoid supplies the energy for contact closing and also stores energy in the trip mechanism. Dual time-current characteristics permit coordination with other protective devices. A choice of four delayed characteristics allows flexibility in system coordination.

Ratings W and VW reclosers protect systems rated 2.4 through 14.4 kV.
Ratings WV27 and VWV27 reclosers protect systems rated through 24.9 kV.
Ratings WV38X and VWV38X reclosers protect systems rated through 34.5 kV.

Features

A variety of operating, indicating, and service accessories, including ground tripping and low-voltage solenoid closing, are available.

Tripping is initiated by a series trip coil that releases the stored-energy trip mechanism when an overcurrent occurs. A closing solenoid supplies the energy for contact closing and also stores energy in the trip mechanism. Low-voltage closing solenoids can be used if auxiliary voltage is supplied to the recloser.

Dual time-current characteristics permit coordinating W-group reclosers with other protective devices on a distribution system. A choice of four delayed characteristics allows flexibility in system coordination. Ground tripping is available as an accessory. A variety of operating, indicating, and service accessories extends the normal flexibility of reclosers in the W-Group even further.

  • W, WV27, and WV38X reclosers use oil as the arc-interrupting medium. Movable bridge-type contacts provide two breaks in series on each phase. Separate self-generating interrupter chambers at each of the two breaks effectively interrupt all currents from minimum load to rated maximum fault.
  • VW, VWV27, and VWV38X reclosers use vacuum as the arc-interrupting medium. A single break on each phase is accomplished by separating contacts inside the vacuum interrupter. All arcing is contained within the vacuum envelope.

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