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Quality Assurance

Quality Management Information

The supplied company materials describe controls for incoming materials, manufacturing and factory inspection.

Quality Control

Quality Control from Incoming Materials to Traceability

This summary reflects the quality-control approach described in the supplied company materials.

Step 01

Incoming Material Control

Every purchased component requires certificates and test reports. Each batch is sampled on arrival; non-conforming lots are returned in full before entering the production floor.

Step 02

In-Process Inspection

Five defined hold points require written QC sign-off — sheet metal forming, bus assembly, wiring, final assembly and pre-test. Production cannot advance past a hold point without release.

Step 03

Factory Acceptance Testing

Every unit undergoes insulation resistance, circuit continuity, protection relay verification and dielectric withstand tests before release. Customer inspection can be arranged.

Step 04

Traceability & Records

Each product carries a unique serial number linked to full quality records throughout production — enabling end-to-end traceability from raw material through to delivery.

Customer-supplied company photograph from Jiangsu Changhui Electric
Supplied Quality Information

Statements From Company Materials

Quality System
Company materials state that an ISO 9001 quality management system is in place
Warranty
2-year free warranty from delivery
After-sales Response
Within 1 hour for technical support requests
Type Testing
Company materials state that type testing has been completed; report files were not supplied for publication
Test Laboratory

Comprehensive In-House Electrical Testing

The listed on-site test equipment supports performance and safety checks before products leave the factory.

  • Power-frequency withstand voltage test (up to 150 kV)
  • Transformer ratio, capacity and load testing
  • Microcomputer relay protection testing
  • DC high-voltage and leakage-current testing
  • Insulation and DC resistance measurement
  • Loop resistance and contact resistance testing
  • Residual current and dielectric strength testing
  • HV/LV switchgear energization test bench
Customer-supplied company photograph from Jiangsu Changhui Electric

Request Inspection or Test Reports

Customer inspection before shipment can be arranged. Contact us to discuss an inspection or request available test records for an order.

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