Automatic Tap - Changing Voltage Regulator compliant for Power Industry 7.62 kV-34.5 kV

The Rockwill RVR-1 is a single-phase oil-immersed automatic voltage regulator, fully designed to meet IEC voltage regulator specifications. Built with an autotransformer as the core, this voltage regulator is equipped with an advanced RVR control unit, which continuously collects real-time voltage and current feedback from the power distribution network. By adopting a built-in on-load tap changer (OLTC), the RVR dynamically optimizes voltage output to match fluctuating load demands, greatly improving grid voltage stability and overall system operation efficiency.

The RVR-1 achieves high-precision voltage regulation and maintains stable operation in complex and changeable power distribution scenarios. It adjusts distribution line voltage across a wide boost and buck range through 32 fine steps, covering voltage ratings from 7.62 kV to 19.92 kV for 60 Hz overhead distribution systems.

Built with internal potential winding taps and an external ratio correction transformer, the automatic voltage regulator adapts to multiple system voltage configurations. The core and winding assembly are housed in a sealed, oil-immersed tank with self-cooled (ONAN) operation, ensuring long-term reliability in outdoor environments.

Product Showcase Video

Key Features

• On-load tap-changing autotransformer ：Built-in OLTC enables voltage regulation under load without interrupting power supply, ensuring continuous distribution service
• Advanced RVR digital controller：Continuously samples real-time voltage and current, automatically selecting the optimum tap position to stabilize output voltage across varying loads
• Broad regulation range in fine steps ： Multi-step tap changer provides wide boost and buck coverage with fine resolution, enabling precise voltage matching to load conditions
• High-precision voltage regulation ：Maintains stable output in complex and fluctuating distribution scenarios, improving overall power quality and system efficiency
• Oil-immersed self-cooled design ：Sealed tank with mineral oil provides natural cooling, dielectric insulation, and corrosion protection for reliable outdoor operation
• Built-in overload protection：Safeguards against abnormal load conditions, coordinating with upstream protective devices for secure network integration
• Remote monitoring and communication ：Optional GPRS or GSM module enables remote tap position monitoring, fault diagnostics, and parameter configuration
• Flexible mounting and voltage adaptability：Internal potential winding taps and external ratio correction transformer allow one regulator to serve multiple system voltages; pole-mount or substation base options

Standard Accessories

• RVR digital regulator controller
• Motor-integrated on-load tap changer with power supply
• Tap position indicator with ADD-AMP adjustment
• Nameplates and lifting lugs
• Oil drain valve, sampling device, and oil sight gauge
• High-creep bushings with NEMA connectors

Optional Accessories

• External series surge arrester
• Automatic pressure relief device
• Control cabinet with removable front panel
• Pole-type mounting brackets
• Substation base for pad mounting
• GPRS / GSM remote communication module

Application Scenarios

• Rural distribution networks： Voltage regulation on long overhead feeders where line voltage drop causes under-voltage at the far end
• Industrial parks and manufacturing facilities ：Stabilizing supply voltage for sensitive production equipment, reducing downtime caused by voltage fluctuations
• Agricultural irrigation zones：Maintaining voltage within acceptable limits for motor-driven pump loads during peak irrigation seasons
• Commercial and residential areas：Compensating for daytime load variation and maintaining consistent service voltage for end consumers
• Renewable energy integration：Regulating voltage at the point of common coupling for distributed solar or wind generation to meet grid code requirements
• Mining and remote operations： Voltage stabilization for heavy-duty equipment in remote locations with weak grid connections