Quality Control

Engineering Reliable Variable Frequency Drive Solutions

 

 

HZ Electric is a manufacturer of Variable Frequency Drives (VFDs), AC Drives, Soft Starters, and Motor Control Solutions for industrial automation applications worldwide. We work with OEMs, system integrators, distributors, and industrial equipment manufacturers to deliver reliable motor control solutions designed for long-term operation in demanding environments.

 

Our focus is on providing stable drive technology, flexible customization, and responsive engineering support throughout the product lifecycle-from product selection and commissioning to after-sales technical assistance.

 

Engineering Standards & Product Quality
 

Product reliability begins with engineering discipline and quality control.

 

Our products are designed and manufactured with reference to internationally recognized standards, including:
• IEC standards for low-voltage drive systems
• IEC 61800 series (Adjustable Speed Electrical Power Drive Systems)
• CE conformity for applicable markets
• RoHS compliance for environmental requirements
• ISO 9001 Quality Management System
• IP20, IP21, IP54 and higher enclosure protection options depending on product series
• EMC design considerations for industrial environments

 

Every drive undergoes functional testing, aging tests, and quality inspection before shipment to help ensure consistent performance in field applications.

 

Manufacturing & Quality Assurance

Our manufacturing process integrates component inspection, PCB assembly, product testing, software verification, and final quality inspection.

Quality control includes:

Incoming Material Inspection (IQC)

01

In-Process Quality Control (IPQC)

02

Final Quality Inspection (FQC)

03

Burn-in Testing

04

Functional Performance Testing

05

This structured process helps maintain product consistency for OEM production and industrial installations.

 

Technical Support Throughout the Project

 

Selecting the right drive involves more than matching power ratings.
Our engineering team supports customers with:

Drive selection

Motor matching

Communication protocol recommendations

PLC integration

Application parameter settings

Commissioning guidance

Troubleshooting assistance

Product documentation

Whether supporting a single machine or a complete automation project, we aim to provide practical engineering support before and after delivery.

 

Why Customers Work With Us

Customers choose us because we focus on practical manufacturing strengths rather than marketing claims.

 

  • Stable manufacturing processes 
  • Consistent product quality 
  • Responsive engineering support 
  • Flexible OEM capabilities 
  • Reliable delivery schedules 
  • Long-term product availability 
  • Technical documentation and after-sales support

We believe lasting business relationships are built on product performance, transparent communication, and dependable service.