Comparison chart of relay-type vs servo-type voltage stabilizers

DVT Series Single Phase Voltage Stabilizer – Wide Input Range, Relay Control

SUNWAY DVT series volt stabilizer uses a relay-type control system and is designed for home and light industrial use. Each model is carefully designed for high efficiency, long service life, and cost-effectiveness to ensure that your home or office equipment has safe and stable power. With its rugged structure, digital interface, and intelligent protection system, it is a reliable solution to the challenges of power fluctuations.

Looking for a tailored solution? Please contact our technical team for professional advice or custom configuration.

What Is a Volt Stabilizer?

A volt stabilizer—also known as a voltage regulator—is an essential electrical device that maintains a stable voltage output regardless of input voltage fluctuations. It protects sensitive equipment like home appliances, computers, and industrial tools from damage caused by overvoltage or undervoltage conditions. The DVT Series by SUNWAY is designed to deliver consistent, safe voltage with high efficiency and intelligent control.

Technical Parameters

Model                       DVT-500VADVT-1000VA  DVT-1500VA  DVT-2000VADVT-3000VA  DVT-5000VA
PhaseSinale phase
Input voltaqeAC 45-260V,80-260V,100-260V,140-260V(or customized)
Output voltaqeAC 220V or customized
Frequencv50HZ/60HZ
Precision±10% or customized
Efficiency>95%
Contro tvpeRelay type
Diqital displavShow input and output voltaqe
ProtectionOvertemperature.Overvoltaqe.Undervoltaqe.Time delay
Ambient temperature-10℃~+40℃
Relative Humiditv<95%
Waveform DistortionNo additional wave form distortion
Insuating ResistanceNormally more than 2MΩ
Insulatina ClassClass B
OvervoltageOutput Voltage≥245V±4V
Low voltaqeOutput Voltage≤180V±4V
ProtectionOvertemperature95℃±10℃
Delay timeLong time(180 second)/short time(6 second)
UndervoltageDisabled by default,customizable if needed
PowerDVT-500VADVT-1000VADVT-1500VA  DVT-2000VADVT-3000VA  DVT-5000VA
Size(mm)L*WH157*240*180157*240*180 220*342*245 220*342*245 220*342*245 220*342*245
The size and weight vary depending on the voltage range,and are subject to the customized actual product.

Key Advantages:

Wide Input Range: Supports 45V to 260V AC input, customizable per application.
Digital Display: Real-time input and output voltage monitoring.
High Precision Output: ±10% voltage regulation, customizable for tighter requirements.
Multi-Layered Protection: Includes overtemperature, overvoltage, undervoltage, and intelligent delay functions.
Compact Design: Space-saving form factor ideal for wall or desktop installation.

DVT vs. Similar Technologies

Compared to servo-type stabilizers or tap-changing regulators, the DVT relay-type series offers:

  • Faster Switching Time
  • Lower Cost
  • No Mechanical Wear Components
  • Excellent for Residential and Small Business Use

Servo stabilizers may be more precise, but relay stabilizers like the DVT are faster, lighter, and more economical—ideal where ±10% output is sufficient.

Choosing the Right Model

When selecting your volt stabilizer:

  • Calculate Total Load: Add up wattage of devices to be protected.
  • Account for Surge Power: Especially for equipment like fridges, pumps, or motors.
  • Pick a Power Range: Select a stabilizer with 20–30% higher VA rating than your total load.

Quick Guide:

  • DVT-500VA / 1000VA: Ideal for routers, TVs, and single appliances.
  • DVT-1500VA / 2000VA: Suitable for PCs, washing machines, or small office setups.
  • DVT-3000VA / 5000VA: Recommended for air conditioners, home theaters, or multi-device environments.
Internal compInternal components of a relay-type volt stabilizer showing relay system and thermal protectiononents of a relay-type volt stabilizer showing relay system and thermal protection
Automatic Voltage Regulator 03

FAQ

Q1: Can I use the DVT Series stabilizer with a generator?
A1: Yes. The DVT stabilizer works with most generators, but ensure your generator’s output voltage is within the supported range (45–260V) and its wattage meets the stabilizer’s input requirements.

Q2: Will the stabilizer protect against power cuts or lightning?
A2: The stabilizer offers protection from voltage spikes and drops but not complete lightning protection. For full surge protection, pair it with a certified surge protector.

Q3: What happens if the input voltage goes below 45V or above 260V?
A3: The stabilizer will shut down or bypass operation to prevent equipment damage. For extreme voltage environments, consider a customized input range.

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