32 step fully automated maintenance-free voltage regulator 11kV 15kV 22kV 33kV

Attributes Description Documentation Resource Library

Key attributes

Brand	ROCKWILL
Model NO.	32 step fully automated maintenance-free voltage regulator 11kV 15kV 22kV 33kV
Rated voltage	11kV
Rated frequency	50/60Hz
Rated capacity	220kVA
Series	VR

Description

Product Introduction

As a pioneer and original manufacturer in China’s voltage regulator industry, we have been deeply engaged in this field for decades with profound technical accumulation. Backed by strong R&D capability and mature manufacturing workflow, our voltage regulator solutions are widely trusted globally for stable quality and superior performance that surpass ordinary industry standards.

The 32-Step Voltage Regulator is a fully automated, maintenance-free step voltage regulator specially designed for distribution line scenarios. This voltage regulator is developed to optimize voltage quality in 10kV to 35kV distribution networks. It adopts microprocessor real-time monitoring of load-side voltage, enabling the step voltage regulator to automatically adjust voltage gears and keep line voltage steadily within the standard target range.

Core Features

32-Level Precision Regulation：The step voltage regulator realizes accurate on-load automatic voltage adjustment. Each step delivers a fine voltage tuning of 0.625%, with an overall regulation range of ±10%, ensuring the voltage regulator maintains precise output under complex grid conditions.
Arc-Free Tap Design：With a specialized voltage regulating tap structure, the step voltage regulator avoids arcing during regulation, effectively extending the mechanical service life of the voltage regulator to nearly 1 million operation cycles.
Fully Sealed & Maintenance-Free：Featuring IP-rated fully sealed construction, the step voltage regulator offers outstanding weather and corrosion resistance, supporting long-term maintenance-free operation for both indoor and outdoor installation.
Flexible Operation & Integration：Voltage regulation mode can be switched on or off according to actual demand. The step voltage regulator supports seamless connection with SCADA systems, perfectly fitting intelligent upgrading of modern power distribution networks.
Energy-Efficient Single-Phase Design：The single-phase structure of the voltage regulator greatly reduces core loss and no-load loss, improving energy utilization and supporting low-carbon grid operation.
Enhanced Grid Performance：This step voltage regulator effectively lowers line loss, smooths voltage fluctuations, and protects the service life of end-user electrical equipment.

Specifications and Selection

We offer a wide range of voltage ratings for global applications 6kV- 34.5kV Custom voltage ratings are also available upon request.

Rated voltage	Rated frequency	Current ratingA	Rated capacitykVA	Withstand lightning impulse voltage
11kV	50Hz	50	55	95kV
		100	110
		150	165
		200	220
		300	330
		400	440
		500	550
		600	660
22kV		50	110	150kV
		100	220
		150	330
		200	440
		300	660
		400	880
		454	999
33kV		50	165	200kV
		100	330
		150	495
		200	660
		250	825
		50	175
		100	350
		150	525
		200	700

Rated Voltage (kV)	Rated Load Current (A)	Rated Capacity (kVA)	Drawing No.	A (mm)	B (mm)	C (mm)	D (mm)	E (mm)	Insulating Oil (L)	Equipment Weight (kg)	Total Weight (kg)
11.0 95kV BIL	50	55	1	1994	1817	694	890	508	208	389	661
	100	110	1	1993	1818	864	1194	559	275	432	816
	150	165	1	2043	1869	1193	1161	610	370	560	1080
	200	220	2	2073	1920	1003	1320	635	360	649	1211
	300	330	3	2370	2208	998	1633	711	674	1007	1964
	400	440	3	2624	2462	1081	1784	838	1060	1059	2545
	500	550	3	2759	2608	1194	1784	972	1328	1306	3339
22.0 150kV BIL	50	110	1	2093	1920	927	1270	635	371	455	945
	100	220	2	2174	2031	1005	1405	711	550	783	1494
	150	330	3	2326	2183	1075	1467	737	659	1005	1873
	200	440	3	2396	2234	1036	1704	762	765	1223	2242
	300	660	3	2675	2414	1330	1848	889	1213	1566	3086
33.0 200kV BIL	50	165	3	2895	2754	799	1294	762	757	1080	1957
	100	330	3	3100	2947	1003	1585	965	1480	1638	3249
	150	495	3	3142	2981	1285	1839	965	1567	1765	3616
	200	660	3	3264	3086	1166	1921	965	1648	1835	3915

Main Application Scenarios

Urban and rural distribution lines：The step voltage regulator stabilizes voltage and solves low voltage and drift issues in long-distance power supply.
New energy grid connection：The voltage regulator balances voltage fluctuations for photovoltaic and wind power stations.
Industrial & mining power supply：The step voltage regulator guarantees stable power for heavy-load equipment against voltage surges and drops.
Rural grid renovation：The voltage regulator adapts to decentralized loads and improves overall power supply quality.
Substation supporting：The step voltage regulator optimizes system voltage as terminal regulation equipment.
Remote mountainous & island power supply：The voltage regulator suits harsh environments for unattended steady voltage regulation.

11kV 15kV 22kV 33kV Fully automated, maintenance-free 32 step voltage regulator for distribution lines

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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33 kV On Load Automatic Voltage Regulator Technology Specofocation

Technical Data

English

Consulting

Negotiable

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Model

VR-33/220

VR-22/220

VR-11/220

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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.