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WF EL

Industrial 380V to 220V Voltage Stabilizer | 500KVA SBW Series 3 Phase to Single Phase Converter with Casters

The WF·EL SBW Series 500KVA industrial voltage stabilizer is a high-performance power solution designed for heavy-duty applications requiring both voltage conversion and stabilization. This advanced unit integrates a 3-phase to single-phase transformer and automatic voltage stabilizer into one system, efficiently converting 380V input to stable 220V output.

Built with a wide input voltage range of 304V–456V, it ensures consistent performance even in unstable or harsh power environments. The stabilizer utilizes a compensation-type regulation system combined with a high-precision servo motor, delivering fast response, high accuracy, and reliable voltage control.

Designed for flexibility, the unit features heavy-duty mobile casters, allowing easy relocation without complex installation. With full CE and UKCA certification, it meets international safety standards and is suitable for global markets.

Its 100% copper winding construction, high efficiency (≥98%), and comprehensive protection system make it an ideal choice for industrial machinery, production lines, and critical power applications.

Model
SG-10 KVA-1000 KVA
Input
380 V, 220 V, 400 kV
Output
380 V, 220 V, 400 V
Cert.
CE
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Technical Excellence

Product Overview

The SBW series operates using a compensation-type voltage stabilization system. When voltage fluctuations occur, the internal sampling circuit detects deviations and activates the servo motor.

The motor drives the carbon brush along the transformer winding, dynamically adjusting voltage output to maintain a stable 220V supply. This process ensures fast response (≤1.5 seconds) and precise voltage regulation (±3%).

Key Features & Advantages

2-in-1 Design: Converter + Stabilizer

Combines voltage conversion and stabilization in one unit, reducing equipment cost, saving space, and simplifying installation.


Wide Voltage Adaptability

Handles extreme voltage fluctuations (304V–456V), making it ideal for unstable grids, remote areas, and high-load environments.


Mobile & Flexible Operation

Equipped with heavy-duty casters for easy movement between workstations. No need for permanent installation.


Industrial-Grade Durability

Constructed with 100% copper windings for better conductivity, lower heat generation, and extended lifespan (10+ years).


Comprehensive Protection System

Includes protection against:

  • Over-voltage
  • Under-voltage
  • Phase loss
  • Phase sequence errors
  • Overload
  • Mechanical faults

Ensures safe operation and protects connected equipment.

Applications

  • Industrial manufacturing equipment
  • CNC machines and automation systems
  • Injection molding machines
  • Construction sites and temporary power setups
  • Factories requiring 220V equipment from 380V supply
  • Unstable power environments

Installation & Usage Tips

  • Install in a dry, well-ventilated environment
  • Ensure proper grounding and correct phase wiring
  • Select capacity with 20–30% margin above actual load
  • Perform routine maintenance every 6 months

Customizable Design

In-house R&D team provides tailored solutions for unique power requirements. Customization: Support customization

Premium Materials

Copper, Aluminum core material with H-class insulation for superior performance.

Intelligent Protection

Advanced overvoltage and short-circuit mechanisms ensure safe operation.

Technical Specifications

Selling Units Single item
Package Size 50X45X55 cm
Gross Weight 86.000 kg
Construction Material Copper, Aluminum
Input Voltage Range 380 V, 220 V, 400 kV
Output Voltage Range 380 V, 220 V, 400 V
Frequency Range 50HZ/60HZ
Manufacturing Origin Zhejiang, China

Logistics

Packaging Standards

Professional export-grade multi-layer protection. Units are secured in shock-proof custom foam molds and reinforced wooden crates for maritime safety.

Estimated Lead Time

Sample (1-5 Pcs) 7-10 Days
Bulk Orders Negotiable

Global Logistics Port

Shipped directly from our factory. We offer full support for FOB, CIF, DDP, and door-to-door express delivery.

Uncompromising Standards

Quality Assurance

Every product undergoes rigorous testing before shipment. Our ISO 9001 certified quality management system ensures consistent performance and reliability. EU CE certification validates compliance with international safety standards.

  • 100% factory testing: insulation resistance, voltage withstand, load performance
  • Temperature rise test for thermal stability verification
  • Short-circuit impedance and no-load loss measurement
  • Comprehensive documentation: test reports, operation manuals, wiring diagrams
ISO
9001 Certified
CE
EU Certified
RoHS
Compliant
IEC
Standards

Ready to Power Your
Next Project?

Get in touch with our technical team to discuss your power solution requirements. We provide customized quotations and global engineering support.

Email Support

info@wenfei-electric.com

Direct Line

+86 18070249969

Global Headquarters

Liushi Town, Wenzhou, Zhejiang, China