SafeInvert | Professional VFD & Soft Starter Manufacturer in China

About SafeInvert

Zhejiang Saikong Electrical Technology Co., Ltd is a leading professional supplier and manufacturer of soft starters and frequency inverters in China. We are committed to delivering reliable, energy-efficient, and technologically advanced motor control solutions for industrial applications.

With over 10 years of industry experience, our R&D center works closely with top-tier institutions including the Institute of Mechanical and Electrical Engineering and Automation at Shanghai University and the Information Technology Department at Fudan University.

10+

Years Experience

Global

Export Reach

CE, ISO

Certifications

Our Mission & Vision

Mission

To create a greener world with our safe and energy-saving technology, providing reliable motor control solutions that reduce energy consumption and environmental impact.

Vision

To become a happy corporation that benefits human society through innovation, quality, and sustainable engineering practices in the field of industrial automation.

Advantage

Decade-long expertise, strong R&D collaboration, strict quality control, and customer-focused service ensure we deliver superior performance and reliability.

Our Main Products

We offer a comprehensive range of industrial motor control and power electronics products designed for reliability, efficiency, and long-term performance.

SN200G Series (General VFD)

Power Range: 0.75kW – 450kW
Voltage: Single/Three Phase
Application: Industrial Fans, Pumps
Input Current: 8.3A – 789A
Output Current: 4A – 820A

SN300 Series VFD

Advanced vector control technology
High torque at low speed
Stable performance under variable loads
Compact design with IP20/IP21 protection
Wide voltage input range

SN360 Series (Solar VFD)

Designed for solar-powered pumping systems
MPPT integration support
Wide DC input voltage range
Energy-saving mode for off-grid operation
Weather-resistant enclosure options

SST Series Soft Starter

0.75kW – 37kW power range
220/400/500VAC, 50/60Hz
Reduces inrush current and mechanical stress
Built-in bypass relay
IP21 protection rating

SSR Series Soft Starter

Advanced thyristor-based soft starting
Smooth acceleration and deceleration
Reduced mechanical wear on belts, gears, and pumps
Programmable start/stop profiles
Overload and phase failure protection

VMF Series Induction Motor

High-efficiency IE2/IE3 class
Robust cast iron frame
Low noise and vibration
IP55 protection standard
Available in various mounting configurations

EM2 / EM3 / EM4 Series Motors

Compact and efficient motor designs
Optimized for VFD operation
Wide speed control range
Thermal protection and insulation class F
Suitable for pumps, compressors, and conveyors

DC Braking Module & Filter

Reduces conducted emissions to power network
Improves system reliability
Low-cost design for user savings
Compatible with various inverter models
EMI/RFI noise suppression

Reactor & Resistor

Input and output AC reactors for harmonic filtering
DC bus reactors for improved power factor
Braking resistors for regenerative energy dissipation
High thermal stability and durability
Protects inverter from voltage spikes

Why Choose SafeInvert?

Engineered for performance, reliability, and sustainability.

10+

Years of Expertise

Over a decade of innovation and industrial experience in motor control technology.

R&D

Advanced R&D

Collaboration with top universities ensures cutting-edge product development.

✓

Global Certifications

CE, ISO9001, and CCC certified for quality and safety compliance.

🌍

Eco-Friendly

Energy-saving designs that contribute to a greener, more sustainable future.

Frequently Asked Questions

Why won't the bypass contactor close on my soft starter?

Possible causes include: (1) Protection device settings too low – re-adjust; (2) Improper parameter settings during debugging; (3) Poor control line connection – check circuit; (4) Failed control panel – contact manufacturer.

What causes a non-full-phase fault during soft starter commissioning?

This may occur due to: (1) Power supply non-full-phase triggering protection – check supply; (2) No load connected to output; (3) Internal phase detection failure – inspect connections and consult technical support.

Are your VFDs suitable for solar-powered applications?

Yes, our SN360 Series is specifically designed for solar-powered pumping systems, supporting MPPT integration and wide DC input voltage ranges for off-grid efficiency.

Do you offer technical support and documentation?

Yes, we provide comprehensive technical support, user manuals, wiring diagrams, and application guidance for all our products. Contact us directly for assistance.

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Reliable VFDs & Soft Starters
for Industrial Excellence