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Voltage regulators

Pad-mount voltage regulator

Eaton's Cooper Power series pad-mounted voltage regulators provide state-of-the-art voltage regulation while reducing installation costs and preserving site aesthetics. The pad-mounted voltage regulator, in conjunction with pad-mounted transformers and switchgear, can be used to create low-profile modular substations. These low-profile substations will be unobtrusive and can usually be installed without fencing and possibly in shared rights-of-way locations. Pad-mounted voltage regulator offerings include single-phase, and 2-in-1 and 3-in-1 versions which utilize the CL-7 multi-phase voltage regulator control with advanced smart grid features designed with the future in mind.

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Single-phase pad-mounted step-voltage regulator catalog Multi-phase pad-mounted step-voltage regulator catalog
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CL-7 control and Quik-Drive tap changer
Cutting-edge voltage regulation technology
True pad-mount voltage regulator
Improved aesthetics with a small footprint
Advanced CL-7 control
Integrates now and into the future

Core features

  • Voltage regulation of 32 steps (approximately 5/8% per steps) for a maximum of ± 10% in wye-connected banks
  • Low-profile voltage regulation for under-ground distribution applications
  • Full metal cabinet meeting stringent tamper-resistance standards
  • Full metal barrier separating high-voltage and control compartments
  • Advanced CL-7 SCADA-ready voltage regulator control
  • Bypass module available for single-phase designs

Voltage regulator and control training

Eaton offers various equipment maintenance, testing and troubleshooting courses. These courses, taught by experienced service technicians, are held at the voltage regulator factory's in-house training facility.

See training options

Integrated volt-var compensation benefits

In this video, experts from Eaton's Power Systems Experience Center (PSEC) explain the methods and benefits of integrated volt-var compensation using voltage regulators and power factor correction to optimize voltage quality on utility power systems.

Pad-mounted step voltage regulation to meet power quality requirements

Voltage regulators provide regulation in 32 steps (approximately 5/8% per steps) for a maximum of ± 10% in wye-connected banks. Single-phase and 3-in-1 pad-mounted voltage regulators add a dimension to underground system planning by providing system planners freedom to improve the safety, reliability and power quality in existing and new underground distribution systems.

Improved safety and reliability

Pad-mounted voltage regulators meet industry standards for tamper-resistance and provide the consistent reliability expected from Eaton. The pad-mounted voltage regulator provides all the functionality of traditional round tank pole-mounted and substation-mounted regulators, with the convenience of pad-mounting. The Internal Differential Potential Transformer (IDPT) is standard. The IDPT, paired with the CL-7 control’s Safe-To-Bypass feature, provides an effortless method for measuring the voltage difference between the “S” and “L” bushings. A Safe-To-Bypass indication shows on the control LCD display ensuring it is safe to perform a bypass operation.
Learn about our safe-to-bypass functionality

Reduced costs with low-profile installation

The multi-phase pad-mounted voltage regulator provides state-of-the-art voltage regulation while both reducing installation costs and maintaining visual aesthetics. With a lower profile footprint than traditional overhead installations, they can be discretely installed in sensitive residential and commercial areas.

Advanced CL-7 voltage regulator control

The CL-7 voltage regulator control meets the needs of system planners today and in the future with integrated SCADA componentry and continuously evolving features. Advanced features enable easy integration into a smart grid enabled network because the CL-7 voltage regulator control is designed with communications and smart grid features in mind. The multi-phase option to operate two or three regulators provides a single point for SCADA communications reducing costly equipment.
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Specifications

Pad-mounted voltage regulator ratings and features

  • Voltage regulation: 32 step of regulation in step of 5/8%  for a total of 10% voltage boost to 10% voltage buck 
  • Voltage ratings: 2400 volts (60 kV BIL) to 34,500 volts (150 kV BIL) for 60 Hz and 50 Hz systems

Standard features

  • CL-7 control
  • CL-7 multi-phase control on 2-in-1 and 3-in-1 designs
  • Quik-Drive tap changer operating 32 steps in under 10 seconds
  • Tamper resistant full-metal cabinet, 31” deep and removable
  • Standard “pad-mounted green” paint (Munsell 7GY3.29/1.5)
  • Full-metal barrier separating HV and control compartments
  • Line-side lift-off door secured with two captivated bolts
  • Pad-lockable lift-off control-side door with three-point latching
  • Door position-retention rods
  • Ground pads
  • Position indicator made from corrosion resistant polymer
  • Laser-etched nameplates (2)
  • Lifting lugs
  • Oil drain valve and sampling device
  • Upper filter press connection
  • Magnetic oil level gauge
  • Provisions for pressure/vacuum gauge & thermometer
  • Three bushing wells and inserts for 600 A / 900 A terminations
  • Under-oil series arrester
  • Internal differential PT for measured source voltage
  • Automatic pressure relief valve
  • Bolted tank cover
  • Control cable with quick-connect terminals
  • CT protection device
  • Ratio correction transformer
  • ADD-AMP limit switches

Optional accessories

  • Bypass switch module (550 A ratings and below, grounded-wye systems only)
  • FR3 dielectric fluid
  • 41” deep cabinet
  • Alternate top-coat color
  • Front-plate mounted PT tap-changer switch
  • No compartment barrier
  • Pressure/vacuum gauge
  • Pressure/vacuum contacts
  • Dial-type thermometer with or without contacts
  • Under-oil shunt arresters
  • Nameplates in alternate languages and metric units
Download Links
  • IEC multi-phase pad-mounted step voltage regulator catalog
    This catalog provides features and ordering information for Eaton's Cooper Power series IEC multi-phase pad-mounted step voltage regulators which contain two or three single-phase voltage regulators in a single tank and can be configured for delta system applications.
    (PDF 452 KB , 28/01/2025)
  • Multi-phase pad-mounted step voltage regulator catalog
    This catalog provides features and ordering information for Eaton's Cooper Power series multi-phase pad-mounted step voltage regulators which contain two or three single-phase voltage regulators in a single tank and can be configured for wye or delta system applications.
    (PDF 507 KB , 30/04/2025)
  • Single-phase pad-mounted step voltage regulator catalog
    This catalog provides features and ordering information for Eaton's Cooper Power series single-phase pad-mounted step voltage regulator.
    (PDF 629 KB , 30/05/2023)
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Additional literature

Voltage regulator and control training

Eaton offers various equipment maintenance, testing and troubleshooting courses. These courses, taught by experienced service technicians, are held at the voltage regulator factory's in-house training facility.

See training options

New to voltage regulators?

Learn about the fundamentals of voltage regulators

 

Learn more

Related products

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