Single Phase Automatic Voltage Regulator 6kV-34.5kV

Attributes Description Documentation Resource Library

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 for voltage regulator

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

Rockwill

Reference Projects for 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

Rockwill

Documentation Resource Library voltage regulator

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RVR-1 Type Single Phase Automatic Voltage Regulator 6kV-34.5kV

Operating Instruction

English

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Public.

Rockwill Electric Group Profile

Brochure

English

PDF

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6kV to 34.5kV Single Phase Automatic Voltage Regulator Brochure

Catalogue

English

Consulting

Certifications voltage regulator

FAQ for voltage regulator

Q: Will this voltage regulator cause an impact on the power grid during voltage regulation?

No. Adopting a design of step voltage regulation + induction regulation, it realizes smooth voltage switching. Combined with the buffering characteristics of oil-immersed insulation, it can avoid voltage surges that may impact the power grid and downstream equipment, making it suitable for scenarios requiring high power supply stability.

Q: What are the key points for the daily maintenance of the oil-immersed self-cooled induction voltage regulator (6kV~33kV)?

It mainly requires regular inspection of the insulation oil level and quality (at least once a year), cleaning dust on the radiator surface to ensure heat dissipation efficiency, and monitoring the operation status of the tap changer. These maintenance measures can guarantee the long-term stable operation of the equipment, and professional power operation and maintenance personnel are recommended for the operations.

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Rockwill Electric Group Profile

Warranty by

Whole life care manager

Whole-life care management services for equipment procurement, use, maintenance, and after-sales, ensuring safe operation of electrical equipment, continuous control, and worry-free electricity consumption.

The equipment supplier has passed platform qualification certification and technical evaluation, ensuring compliance, professionalism, and reliability from the source.