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Advanced Power Quality Solutions

Leading manufacturer of Power Quality Cabinets, Modules, Capacitors & Controllers with 31 years of innovation and excellence.

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About LASTONE

Hengyi Electric Group – A trusted name in power quality management since 1993.

Hengyi Factory

Innovating Power Quality Since 1993

Hengyi Electric Group was founded in 1993 with a registered capital of 58 million yuan. We specialize in manufacturing APF, SVG, SPC, intelligent power capacitor compensation devices, anti-harmonic capacitors, high and low voltage capacitors, and reactive power automatic compensation controllers.

With two major production bases in Wenzhou and Shanghai, covering over 45,000 square meters, we produce millions of power quality products annually, serving industries worldwide.

1993
Founded
31+
Years Experience
50+
Products
2M+
Units Produced

Our Solutions

Tailored power quality systems for diverse industrial and commercial applications.

Residential Area

Residential Areas

Reduce heating of electrical equipment, minimize insulation aging, extend service life, and lower maintenance costs in residential buildings.

Industrial & Mining

Industrial & Mining

Improve power supply quality, reduce equipment instability, and prevent economic losses in industrial plants, ports, and construction sites.

New Energy

New Energy

Reduce resonance probability of compensation capacitors in power grids and enhance the safety and reliability of renewable energy systems.

Rail Transportation

Rail Transportation

Real-time detection of load current to prevent false alarms due to local voltage imbalance in rail and metro systems.

Our Products

High-performance power quality devices engineered for reliability, efficiency, and intelligent control.

HYAPF Active Power Filter

HYAPF Active Power Filter

Real-time harmonic detection and compensation using DSP and IGBT technology. Filters 2nd to 50th order harmonics.

  • Harmonic compensation
  • Reactive power compensation
  • 50A, 100A, 100kvar options
HYSVG Static Var Generator

HYSVG Static Var Generator

Dynamic reactive power compensation with fast response time. Ideal for fluctuating industrial loads.

  • Fast response < 10ms
  • Modular design
  • Low harmonic distortion
HYSPC Three-Phase Load Balancer

HYSPC Three-Phase Load Balancer

Automatically adjusts load imbalance in low-voltage distribution networks to reduce losses and improve efficiency.

  • Reduces line losses
  • Prevents transformer overheating
  • Improves voltage stability
Intelligent Capacitor Module

Intelligent Capacitor Module

Integrated capacitor and reactor with microprocessor control for automatic switching and harmonic protection.

  • 5kvar to 60kvar capacity
  • Anti-harmonic design
  • Self-diagnostic function
JKGHY Intelligent Controller

JKGHY Intelligent Controller

Advanced reactive power controller with real-time monitoring, data logging, and communication interfaces.

  • RS485 / Modbus support
  • LCD display
  • Multi-parameter measurement
Power Quality Cabinet

Power Quality Cabinet

Complete cabinet solution with APF/SVG modules and anti-harmonic capacitors. Customizable configurations.

  • Integrated ventilation system
  • Quick-fuse protection
  • Modular expansion
Motor Capacitor

Motor Capacitor Series

High-reliability capacitors for motor starting and running, designed for harsh industrial environments.

  • Self-healing metallized film
  • High surge current tolerance
  • Long service life
Reactor Series

Reactor & Filter Series

Detuned reactors and harmonic filters to protect capacitors and improve system stability.

  • 7% and 14% impedance options
  • Low noise design
  • High thermal stability
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Why Choose LASTONE?

Decades of engineering excellence, innovation, and customer-focused solutions.

Industrial Expertise

31 years of experience in power quality systems with deep understanding of industrial and commercial power challenges.

Advanced Technology

DSP-based control, IGBT power modules, and intelligent algorithms ensure precise and reliable performance.

Global Reach

Products exported worldwide with support in multiple languages and international certifications.

Contact Us

Get in touch with our team for product inquiries, technical support, or partnership opportunities.

Phone

+86-13575421847

Email

[email protected]

Location

Wenzhou & Shanghai, China

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