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Single Phase Automatic Voltage Regulator 6kV-34.5kV

  • Single Phase Automatic Voltage Regulator 6kV-34.5kV

Key attributes

Brand ROCKWILL
Series RVR-1
Rated Voltage 7.62-34.5kV
Rated Current 50-546 A
Capacity 38-660 kVA
Rated Frequency 50/60 Hz
Description

The RVR-1 voltage regulator achieves automatic on-load voltage regulation by adjusting the transformer ratio through the on-load tap changer. The intelligent controller RVR samples, analyzes, judges, and processes the voltage on the line, then sends signals to drive the on-load tap changer to adjust the voltage.

The RVR-1 voltage regulator is equipped with self-protection lockout functions, including line fault, overload, overcurrent, and undervoltage protection. The RVR-1 voltage regulator also features a unique on-load tap changer design that prevents arcing during voltage regulation, ensuring a service life of up to two million operations. The RVR-1 voltage regulator features a fully sealed design, with a high level of protection and excellent weather resistance, allowing for long-term maintenancefree operation. 

Advantages of the product 

  • High precision: Within the set voltage regulator range, it automatically adjusts the voltage in 32 loaded steps.

  • Long service life: The unique voltage-tapping switch design prevents arcing during voltage adjustment, ensuring a mechanical operational lifespan of 1 million cycles.

  • Low maintenance: Fully sealed design with high protection rating, excellent weather resistance, allowing for long-term maintenance-free operation, with a design life of 20 years.

  • Low loss: The single-phase design can minimize iron losses and reduce no-load losses, with total losses being less than 0.1%.

  • Strong overload capability: Designed with a rated capacity for a 55°C temperature rise, it can handle an overload of 12% at a 65°C temperature rise. 

Technical Specifications

Voltage (kV) Current (A) Capacity (kVA) BIL (kV) Power Frequency Withstand Voltage (kV) Insulation Class
7.62

50 38 60/75 20 A
100 76



150 114



219 167



328 250



438 333



546 416



13.8 50 69 95/125 38
100 138



150 207



200 276



300 414



400 552



14.4 50 72 95/125 38
100 144



200 288



300 432



400 576



19.92 50 100 170/200

70
100 200



167 333



200 400



335 667



34.5 50 165 170/200

70
100 330



150 495



200 660



Service environment

  • Air temperature: Maximum temperature: +40℃;

  • Minimum temperature: -40℃

  • Humidity: Daily average humidity 100%.

  • Above sea level: Maximum installation altitude: 1000m.

Note: If it needs to be installed in plateau areas with an altitude higher than 1,000 meters, it is essential to consult with the manufacturer to take necessary measures to strengthen insulation during the ordering process. 

Typical Applications

  • Utility Grids: The voltage regulator compensates for drops in rural or long-distance lines

  • Industrial Power: The step voltage regulator stabilizes voltage for factories with fluctuating loads

  • Renewable Energy: The voltage regulator smooths variations in solar/wind farm connections

  • Commercial/Municipal: The step voltage regulator ensures stable power for hospitals, data centers, and plants

  • Mining/Offshore: The voltage regulator handles high fluctuations in demanding environments

Connection diagrams 

Single Phase Automatic Voltage Regulator 6kV-34.5kV

Solutions - voltage regulator

  • Innovative Solutions of Step Voltage Regulators in Power Distribution Systems
    1 Executive SummaryVoltage Management Challenges in Modern Distribution Networks: Long-distance feeders causing voltage drop; Distributed energy resource (DER) integration leading to bidirectional power flow; Load fluctuations causing frequent voltage variations.Technical Features of Step Voltage Regulators (SVRs): Employs tap-changing technology to alter transformer winding turns ratio, achieving a ±10% voltage adjustment range (typically in 32 steps, 0.625% per step); Core advantage
  • Zanzibar project – voltage regulator selection misalignment with load requirements: root cause analysis & solution
    I. Incident BackgroundThe 33kV line voltage regulator (13 taps, 4% step per tap) supplied by our company for the Zanzibar project has been commissioned and is currently in operation. However, during nighttime periods of low load, the regulator has repeatedly caused the low-voltage side voltage at the downstream factory to rise to 420V, triggering overvoltage shutdowns of production machinery. Following these incidents, the customer specified a maximum permissible low-voltage side tolerance of 41
  • Midnight Voltage Surge to 420V Causes Plant Shutdown? The RVR-1 Automatic Voltage Regulator Breaks the
    Introduction: A "Low-Load Hours" Crisis That Struck in the Early MorningBetween 1:00 AM and 7:30 AM on August 24, while most plants were in their low-production overnight window, one facility was forced to shut down three times in succession due to voltage spikes reaching 420V. This was not a grid fault, but a classic case of "off-peak voltage over-limit."During late-night hours when grid load is light, line losses are minimal, and excess reactive power causes the terminal voltage to rise sharpl
  • Zanzibar Project Voltage Regulation Technical Solution: Multi-Level Voltage Stabilization and Precision Control in 380V/415V Mixed-Use Scenarios
    1. Core Project Challenges and Reference Standards1.1 Core Parameters System Constraint:The client proposed a 410V upper limit on the low-voltage side. This requirement stems from the need to protect 380V-rated equipment against overvoltage in scenarios where both 380V and 415V equipment are used. This 410V limit is not a contractual hard requirement but rather a system-level design reference value. With the implementation of a dedicated supply scheme for specific equipment, independent analysis
  • Comprehensive Solution for Replacing RS Series Stepping Voltage Regulators
    Ⅰ. Analysis of Original Equipment Specifications and System Requirements AssessmentCore Features (ABB RS Series Stepping Voltage Regulator): Voltage Regulation Range: 100V-440V AC input, output 0.7-1.0 times rated voltage (e.g., 400V input yields 280-400V output). Control Interface: Supports 4-20mA analog signal or RS485 digital communication (Modbus protocol), default parameters: 9600 baud rate, no parity, 8 data bits, 1 stop bit. Load Capability: 5A-16A RMS current, suitable for high-power ste

Case Studies - voltage regulator

  • Successful Case of 263 Units of 33kV Oil-immersed 32-step Voltage Regulator Controller Project in Bangladesh
    Successful Case of 263 Units of 33kV Oil-immersed 32-step Voltage Regulator Controller Project in Bangladesh01 Overall Project Overview1.1 Project BackgroundIn June 2024, 263 units of 33kV oil-immersed 32-step voltage regulator controller were officially delivered and applied to the Bangladesh Medium Voltage Distribution Network Upgrade Project. R&D and manufactured by Rockwill, these devices are used for voltage stability regulation, load fluctuation adaptation and power supply quality impr

Related Blogs - voltage regulator

Documentation Resource Library voltage regulator

6kV to 34.5kV Single Phase Automatic Voltage Regulator Brochure
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6kV to 34.5kV Single Phase Automatic Voltage Regulator Brochure 6kV to 34.5kV Single Phase Automatic Voltage Regulator Brochure
Catalogue
English
PDF
Rockwill Electric Group Profile
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Rockwill Electric Group Profile Rockwill Electric Group Profile
Brochure
English
RVR-1 Type  Single Phase Automatic Voltage Regulator  6kV-34.5kV
Restricted
RVR-1 Type Single Phase Automatic Voltage Regulator 6kV-34.5kV RVR-1 Type Single Phase Automatic Voltage Regulator 6kV-34.5kV
Operating Instruction
English
PDF
RVR-1  Single Phase Automatic Voltage Regulator 6kV-34.5kV
Restricted
RVR-1 Single Phase Automatic Voltage Regulator 6kV-34.5kV RVR-1 Single Phase Automatic Voltage Regulator 6kV-34.5kV
Catalogue
English
PDF

Certifcations voltage regulator

  • RVR1-100A-11 single phase 32-step voltage regulator test
  • RVR1-100A-22 single phase 32-step voltage regulator
  • RVR1-200A-22 single phase 32-step voltage regulator
  • RVR-5000/10 Three Phase Oil Immersed Automatic Voltage Regulator test
  • RVR1-400A-22 single-phase 32-step voltage regulator

Frequently asked questions

The RVR-1 Step Voltage Regulator automatically adjusts line voltage in 32 loaded steps by using its intelligent controller to analyze line voltage and drive the on-load tap changer.

The RVR-1 Step Voltage Regulator features a unique anti-arcing tap changer ensuring 1 to 2 million operations, and a fully sealed design offering a 20-year design life with long-term maintenance-free operation.

The RVR-1 Step Voltage Regulator is equipped with self-protection lockout functions against line faults, overload, overcurrent, and undervoltage.

Total losses of the RVR-1 Step Voltage Regulator are less than 0.1%. Designed for a 55°C temperature rise, it can handle an overload of 12% at a 65°C temperature rise.

Know your supplier

Online store
On-time delivery rate
Response time
100.0%
≤4h
Company overview
Workplace: 108000m² Total staff: 700+ Highest Annual Export(usD): 150000000
Services
Business Type: Design/Manufacture/Sales
Main Categories: Medium and High Voltage Switchgear/Power and Distribution Transformers/Instrument Transformers and Sensors/Lightning Protection and Electrical Insulation/Substations and E-Houses/Electrical Panel and Controlgear
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