Single Phase Automatic Voltage Regulator 7.62 kV-34.5 kV

Attributes Description Documentation Resource Library

Key attributes

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

Description

The RVR-1 single-phase automatic voltage regulator is a tap-changing autotransformer designed for medium-voltage overhead distribution networks. It realizes stable line voltage regulation covering a ±10% boost & buck range via 32 fine adjustment steps, each delivering approximately 0.625% voltage correction.

It supports voltage grades from 2400V (60kV BIL) up to 34,500V (200kV BIL), compatible with both 50Hz and 60Hz global power grids. All units are fitted with internal potential winding taps and an external ratio correction transformer, allowing one regulator model to adapt to multiple system voltage levels flexibly.

Two installation configurations are available: Smaller kVA models are equipped with pole-mount support lugs and anchoring fittings for platform/substation installation; large-capacity units come with integrated heavy-duty substation bases for pad-mounted ground deployment.

Core Product Advantages

Ultra-Precise Voltage Regulation：32 loaded tap steps provide fine voltage correction across the full ±10% buck-boost range, stabilizing grid voltage fluctuations and guaranteeing consistent power quality for downstream loads.
Extended Mechanical Service Lifespan：The proprietary arc-suppression tap switch design eliminates electric arcing during tap shifting, supporting up to 1 million mechanical operation cycles for long-term stable performance.
Minimal Maintenance with 20-Year Design Life：Adopts fully sealed oil-immersed tank structure with high weatherproof protection rating, delivering outstanding resistance to UV radiation, humidity and salt spray. It enables long-term outdoor maintenance-free operation with a certified 20-year design service life.
Ultra-Low Energy Losses：Optimized single-phase magnetic core structure greatly reduces iron loss and no-load power consumption, with the total loss of the whole unit controlled below 0.1% for superior energy efficiency.
Strong Overload Tolerance：Rated with a 55°C temperature rise design; it can continuously withstand 12% overload under 65°C temperature rise to cope with peak load surges on distribution lines.

Technical Specification Table

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
	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
	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.

Outline Assembly Drawing

Single Phase Automatic Voltage Regulator – 7.62 kV 13.8 kV 14.4 kV 19.92 kV 34.5 kV IEC 60076 compliant for Power Industry

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

Restricted.

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

Catalogue

English

Consulting

Restricted.

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

Operating Instruction

English

Consulting

Public.

Rockwill Electric Group Profile

Brochure

English

PDF

Certifications Voltage Regulator

FAQ for Voltage Regulator

Q: Does the automatic step voltage regulator compliant with IEC 60076 standards support OEM customization services?

Yes, we offer flexible OEM customization. We can tailor key parameters such as voltage (6 kV~34.5 kV), capacity, and control functions according to customers' specific power system requirements, while ensuring full compliance with IEC 60076 standards.

Q: How does the automatic step voltage regulator compliant with IEC 60076 standards ensure the stability and safety of voltage regulation during actual operation?

1.Stability: Strictly designed in compliance with IEC 60076 standards, equipped with an intelligent closed-loop control and precise step voltage regulation mechanism. It real-time monitors voltage fluctuations and performs automatic fine-tuning. Core components are verified through type tests to ensure a voltage error of ≤±1%.

2.Safety: Built-in overvoltage/overcurrent/overtemperature protection, insulation protection, and arc-extinguishing design for tap changers. The entire process complies with IEC 60076 safety specifications, and it supports automatic shutdown in case of faults to eliminate operational risks.

Negotiable

Pricing calculator

PDF

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.