Three-Phase Automatic Step Voltage Regulator-13.8kV to 34.5kV

Attributes Description Documentation Resource Library

Key attributes

Brand	ROCKWILL
Model NO.	Three-Phase Automatic Step Voltage Regulator-13.8kV to 34.5kV
Rated voltage	34.5kV
Rated frequency	50/60Hz
Rated capacity	500kVA
Series	SVR

Description

Product Description

As a pioneer and the first source factory in China's three-phase step voltage regulator industry, we have been deeply rooted in the sector for decades, accumulating profound technical expertise. Leveraging top-tier R&D capabilities and a mature manufacturing system, our products have gained widespread market trust with reliability and performance that far exceed industry standards.

The SVR-3 is a high-performance, oil-immersed three-phase step voltage regulator, designed to stabilize medium-voltage distribution lines. It operates as a self-regulating autotransformer, equipped with an advanced SVR smart controller that continuously samples voltage and current signals from the grid.

By automatically adjusting output voltage through an on-load tap changer (OLTC), the SVR-3 enhances grid efficiency, ensures power quality, and accommodates varying load demands. This system integrates current transformers (CTs), voltage transformers (VTs), and limit switches to manage regulation steps precisely and reliably.

Main Features

Wide Regulation Range：±20% ultra-wide adjustment via 16 tap steps (2.5% per step) + self-developed high-capacity OLTC for reliable full-load switching.
Advanced Smart Control:Built-in SVR controller with real-time monitoring, remote configuration & communication (GPRS/GSM/Bluetooth supported).
Comprehensive Protection:Automatic lock-out for line faults, overload, overcurrent & undervoltage—ensuring safe, stable operation.
Flexible Control Settings:Adjustable voltage setpoints, step limits, time delays & user-configurable system parameters.

Additional Information

Payment Terms: 30% T/T in advance, 70% balance against copy of B/L.
Packaging: Export-grade plywood cases for maximum protection during transport.
Core Material Options: Copper or Aluminum windings available per customer requirement. Copper offers longer lifespan and better conductivity.
OEM Services: Custom logo/branding available for bulk orders.

Technical Specifications

Available voltage ratings: 50Hz 6kV-34.5kV Custom voltage solutions are available upon request.

Parameter	Specification
Model No.	SVR-3
Phase	Three-phase
Rated Voltage Range	2.5 kV-19.92 kV
Voltage Regulation Range	±20% (16 steps, 2.5% per step)
Rated Current	50 A-1665 A
Rated Capacity (kVA)	38.1-1000 kVA
Basic Impulse Level (BIL)	60 kV-50 kV
Frequency	50 / 60 Hz
Tap Changer Type	On-load tap changer (OLTC), motor-driven
Transformer Type	Oil-immersed autotransformer
Cooling Method	ONAN (Oil Natural Air Natural)

Our Service Commitment

Responsive Pre-Sales Assistance：Swift replies to inquiries and tailored support to streamline your ordering process.
Transparent Production Tracking：Real-time updates at every manufacturing stage, keeping you fully informed.
Dependable After-Sales Service：Consistent quality support and dedicated warranty assistance post-purchase.
Hassle-Free Warranty Coverage：12-month quality assurance for worry-free operation and peace of mind.

Why Choose ROCKWILL

One-stop power equipment provider with global coverage
Free technical support to optimize your power solutions
Customized service for orders of any size
All products undergo strict quality inspection before delivery
Competitive pricing and flexible logistics from our own freight network

FAQ for Voltage Regulator

Q: What is the primary function of the SVR 3 three-phase step voltage regulator？

The SVR 3 is designed to stabilize medium voltage distribution lines by acting as a self regulating autotransformer. It automatically adjusts the output voltage to ensure consistent power quality and grid efficiency regardless of fluctuations in load demand.

Q：How does the SVR smart controller manage voltage regulation？

A:The three-phase step voltage regulator continuously monitors and samples voltage and current signals directly from the grid. Using this real time data it directs the on load tap changer to adjust the voltage steps precisely ensuring that the output remains within the desired range for the distribution network.

Q：What internal components are integrated into the SVR3 system？

A:The three-phase step voltage regulator integrates several critical components including an on load tap changer OLTC current transformers CTs and voltage transformers VTs. It also features limit switches to manage the regulation steps reliably and prevent over travel during the adjustment process.

Q：What makes the three-phase step voltage regulator a reliable choice for power distribution？

A:As a product from Chinas pioneer source factory the SVR 3 benefits from decades of technical expertise and top tier R&D. Its oil immersed design and advanced manufacturing system ensure performance that exceeds industry standards for reliability in various operating environments.

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Model

SVR3-34.5-500--

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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.