32-Step Single-phase Voltage Regulator


Eaton's Cooper Powerâ„¢ series VR-32 single-phase step voltage regulators are tap-changing autotransformers. Voltage is maintained within desired limits by controls that feature superior accuracy, reliability, and serviceability. Continuity of service is assured by rugged, service-proven tap changers and core-and-coil assemblies functioning with the control.

Voltage regulators are available with a full complement of standard features for routine applications, as well as a full line of option-al accessories for unique applications. In addition, the regulator offers desirable features that enhance operation and service.

Catalog Number Contact Factory
Ratings Ratings and Dimensions 50 Hz, see CA225001EN
Ratings Ratings and Dimensions 60 Hz, see CA225001EN


  • Regulate distribution line voltages from 10% raise (boost) to 10% lower (buck) in thirty-two steps of approximately 5/8% each.
  • Voltage ratings are available from 2400 volts (60 kV BIL) to 34,500 volts (200 kV BIL) for 60 Hz and 50 Hz systems.
  • Internal potential winding taps and an external ratio correction transformer are provided on all ratings so that each regulator may be applied to more than one system voltage.
    • Smaller kVA sizes are supplied with support lugs for pole mounting and with substation or platform tie down provisions.
    • Larger sizes are provided with substation bases with pad-mounting provisions.
  • CL-series control
  • Tap changer with motor and powersupply
  • Position indicator with ADD-AMP adjustment
  • Two laser-etched nameplates
  • Lifting lugs
  • Oil drain valve and sampling device
  • Upper filter press connection
  • Oil sight gauge
  • Mounting provisions for shunt arresters
  • High-creep bushings with clamp-type terminals
  • Bolt-down provisions (overheadunits)
  • Pole-type mounting brackets (over-head units)
  • Substation base (substation units)
  • External series arrester
  • Automatic pressure relief device
  • Handhole
  • Control cabinet with removable front panel
  • Ratio correction transformer
  • Conformally coated circuit boards