Step Voltage Regulator

Step Voltage Regulator

Reliable medium-voltage Step Voltage Regulator (SVR) delivers precise, stable voltage control for critical networks. With ±10% regulation in 32 fine steps, it features an advanced SEL controller, fast arc-free switching for safety, and a sealed-tank design for long-life, maintenance-free performance—built to excel in demanding environments.

Medium Voltage Step Voltage Regulator 11kV 33kV

Enertech’s Step Voltage Regulators (SVR) deliver industry-leading voltage stability for medium voltage distribution networks, available in 11 kV and 33 kV configurations. Designed with advanced SEL-2431 voltage regulation controllers, high-speed tap changers, and SCADA compatibility, our SVRs ensure precise ±10% voltage regulation in 32 fine steps, each with an accuracy of ±0.625%.

Built to operate in the most demanding environments, Enertech SVRs feature a sealed-tank design with corrosion-resistant components, arc-free switching, and long-life insulation systems—reducing maintenance and extending operational lifespan beyond 2 million tap operations. The fully integrated design includes a tap changer, series reactor, and control system for reliable performance and simplified installation.

With high efficiency, flexible installation options, and robust weather resistance, the Enertech SVR optimizes power quality, reduces losses, and safeguards sensitive equipment—making it the ideal choice for utilities, industrial plants, and critical infrastructure requiring dependable voltage regulation.

Type

Single-phase, pole-mounted, medium voltage step voltage regulator

Available Ratings

11 kV and 33 kV

Voltage Regulation Range

±10% in 32 steps (±0.625% per step)

Rated Power

100 kVA to 1,000+ kVA (varies with voltage class)

System Frequency

50 Hz

Controller

SEL-2431 intelligent voltage regulator controller

SCADA Compatibility

RS232 interface for remote monitoring & control

Tap Changer

32-position, load-tap-changing, arc-free switching

Insulation Class

Up to 200 kV BIL (depending on voltage rating)

Cooling

Oil-immersed, self-cooled (ONAN)

Design Life

Over 2 million operations

Protection

External series arrester, high creepage bushings, corrosion-resistant position indicator

Standards Compliance

IEEE C57.15:2009, GB/T-12225:2008

Mounting

Pole-top mounting brackets with lifting lugs

Additional Features

Oil sight gauge, drain valve, sampling device, bolt-down provisions

Operating Environment

Outdoor, -40°C to +55°C ambient, high humidity, polluted environments

Installation Modes

WYE (4-wire), Delta open (3-wire), Delta closed (3-wire)

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