Name: Dynamic Voltage Restorer for Voltage Sag and Swell Protection
Brand: YIDEK
SKU: 00006
Rating: 4.9 (53 reviews)

Dynamic Voltage Restorer for Voltage Sag and Swell Protection

Intelligent Flexible Regulation Device for New Power Systems: Empowering Distribution Network Upgrades and Driving Efficient Industrial Energy Use.

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Low Loss: Single-stage AC/DC conversion with efficiency up to 98%; bypass loss <0.3%.
High Temperature Resistance: Full load operation at ambient temperature of 50℃.
High Accuracy, Wide Regulation Range: Fully power electronic control; output voltage accuracy
Protection: Fully sealed design; electronic layer IP65, moisture-resistant; easy installation and long-term maintenance-free.
Compact and Lightweight: Smaller size and lighter weight; only one-eighth the weight and one-sixth the volume of traditional voltage stabilizers.
Easy Operation: Supports wireless or wired communication; Wi-Fi/4G for real-time status monitoring and parameter adjustment.

What is a DVR?

A Dynamic Voltage Restorer (DVR) is a series-connected power quality device that protects sensitive loads from voltage disturbances by injecting a compensating voltage in real time.

It effectively mitigates:

Voltage sags
Voltage swells
Flicker
Voltage imbalance

Specifications Dynamic Voltage Restorer for Voltage Sag and Swell Protection

Single-phase capacity	20kVA, 33kVA, 50kVA, 66kVA
Three-phase capacity	50kVA, 100kVA, 150kVA, 200kVA

Voltage Regulation Dynamic Voltage Restorer for Voltage Sag and Swell Protection

Input voltage range	220V/380V (-40%~+35%), (-20%~+35%)
Output rated current	150A, 250A, 380A, 380A
Output rated current	90A, 150A, 227A, 300A
Output voltage range	-10%~+7% (National standard range)
Continuous regulation	Continuous
Output voltage accuracy	<1%
Output voltage unbalance	<1%
Output voltage THDv	<2%

Bypass

Upon fault	Automatic bypass
No compensation required	Automatic bypass
During maintenance	Manual bypass

Communication Dynamic Voltage Restorer for Voltage Sag and Swell Protection

Communication mode	RS485, CAN
Communication mode	4G, WIFI
Notes	Remote monitoring and control with a grid/communication terminal

Protection Rating Dynamic Voltage Restorer for Voltage Sag and Swell Protection

Electronic layer	IP65
Air duct	IP20
Outdoor cabinet	IP44
Notes	Internal module, housed in an outdoor cabinet

Technical Parameter Dynamic Voltage Restorer for Voltage Sag and Swell Protection

Dynamic response time	<1ms
Dynamic response time	<2%
Bypass loss	<0.3%
Noise	<60dB
Operating temperature	[-25C,+50C]
Storage temperature	[-40C,+70C]
Humidity	<99%
Safety protection	Supports over-temperature protection, overvoltage protection, and undervoltage protection.

RMS overload capacity Dynamic Voltage Restorer for Voltage Sag and Swell Protection

Continuous overload	110%
Notes	Ambient temperature 30℃

Related Resources	Download
YIDEK product brochure	Download
YDK-DVR Dynamic Voltage Regulator	Download
Invention Patent – Energy Storage Voltage Sag Compensation Device	Download

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