Overhead Line Single Phase Automatic Step Voltage Regulator 6kV -34.5kV

Attributes Description Documentation Resource Library

Key attributes

Brand	ROCKWILL
Model NO.	Overhead Line Single Phase Automatic Step Voltage Regulator 6kV -34.5kV
Rated voltage	33kV
Phases	Single-phase
Series	RVR

Description

The Rockwill single-phase automatic step voltage regulator is an oil-immersed tap-changing autotransformer designed for overhead medium-voltage distribution lines.

Equipped with an advanced digital controller and a motor-driven on-load tap changer (OLTC), it continuously samples voltage and current signals from the grid and automatically adjusts the output voltage in discrete steps to compensate for line voltage drop, load fluctuations, and source-side instability.

The regulator covers a ±10 % boost and buck range across 32 steps (approximately 0.625 % per step), and is rated for system voltages from 2,400 V (60 kV BIL) to 34,500 V (200 kV BIL), compatible with both 50 Hz and 60 Hz networks.

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Key Features

Precise step voltage regulation ：32-step on-load tap changer provides fine adjustment within a ±10 % range, maintaining stable output voltage under dynamic load conditions
Real-time adaptive control： Microprocessor-based controller samples line voltage and current via internal potential and current transformers, automatically selecting the appropriate tap position
Oil-immersed construction：Mineral oil insulation and sealed tank design ensure reliable outdoor operation with minimal maintenance
Motor-driven on-load tap changer ：Arc-suppression tap-changer mechanism allows tap transitions under load without service interruption, with a mechanical life exceeding one million operations
Integrated protection；Built-in lockout functions for line fault, overload, overcurrent, and undervoltage conditions
Remote monitoring capability ： Optional GPRS / GSM / Bluetooth connectivity for remote control and SCADA integration
Flexible installation： Suitable for pole-mount, pad-mount, and substation deployment

Technical Parameters

Voltage (kV)	Current (A)	Capacity (kVA)	BIL (kV)	Power Frequency Withstand Voltage (kV)	Insulation Class
6/6.35	50	30/32	75/95	28	A
100	60/64
150	90/95
200	120/127
300	180/191
400	240/254
500	300/318
600	360/381
11	50	55
100	110
150	165
200	220
300	330
400	440
500	550
600	660
15	50	75	125/150	50
100	150
150	225
200	300
300	450
400	600
500	750
22	50	110
100	220
150	330
200	440
300	660
33	50	165	170/200	70
100	330
150	495
200	660
250	825
300	990

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

Operating Conditions

Parameter	Specification
Ambient temperature	–40 °C to +55 °C
Altitude	≤ 1,000 m above sea level
Installation	Outdoor, pole-mounted
Environment	Adaptable to high humidity, coastal salt fog, and mild corrosive atmospheres
Vibration / interference	No severe vibration, impact, or strong electromagnetic interference at installation site

Applications

Utility distribution networks requiring voltage stabilization on long overhead feeders
Industrial facilities with fluctuating load demands
Rural and suburban power lines experiencing voltage drop over distance
Renewable energy systems requiring consistent voltage under variable generation conditions

Additional voltage ratings and customized configurations are available on request. Contact Rockwill for application-specific sizing and technical support.

Solutions for Voltage Regulator

Step Voltage Regulator Solutions for Enhancing Rural Distribution Network Stability and Efficiency

Ⅰ. Technical Principle and Core Advantages1. Working PrincipleThe 32-step voltage regulator is a tap-switching type voltage regulation device that adjusts voltage by automatically switching the tap positions of series windings:Boost/Buck Mode: A Reversing Switch selects the relative polarity of the series and parallel windings, achieving a ±10% voltage regulation range.32-Step Fine Regulation: Each step adjusts the voltage by 0.625% (32 steps total), preventing abrupt voltage changes and ensurin

Rockwill
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 &plusmn;10% voltage adjustment range (typically in 32 steps, 0.625% per step); Core advantage

Rockwill

Documentation Resource Library Voltage Regulator

Restricted.

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

Catalogue

English

PDF

Restricted.

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

Operating Instruction

English

PDF

Public.

Rockwill Electric Group Profile

Brochure

English

PDF

Certifications Voltage Regulator

$4020.00

Pricing calculator

Model

RVR-1-33KV

PDF

Rockwill Electric Group Profile

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