Test Solution for NEV High–Voltage Auxiliary Systems

Changzhou Hopetech Electronic Technology Co., Ltd. was founded in 2009. As a nationallevel -high-tech manufacturer with independent R&D, we possess full in-house capabilities for hardware and software development and production. Hopetech participates in the formulation of national metrology standards. With years of expertise in safety and resistance test instruments, we are one of China’s leading brands in the test-and-measurement industry.

For new-energy-vehicle (NEV) high-voltage auxiliary system components, including DC-DC converters, high-voltage connectors, motor and electronic-control unit housings, Hopetech delivers a complete electrical-safety performance test solution covering incoming-material inspection, R&D reliability validation and production-line end-of-line testing. Our instruments support communication with automated production lines and are supplied with English-language operation manuals.

✅ CHT9922 / HP9985A/B Integrated Safety Tester | Production–Line Safety Gatekeeper

Role: Rapid inspector for mass-production small-to-medium high-voltage components such as DC-DC converters and high-voltage connectors.

Main Functions: All-in-one test for hipot, insulation resistance and ground continuity; equipped with no-load mis-test protection; supports 4-wire low-resistance measurement; standard PLC interface for direct connection to automated production lines.

Pain Points Solved: Complete multiple safety-test items in one step at the component off-line stage, eliminating frequent switching among separate instruments and improving production-line takt time. Built-in mis-test protection prevents damage to DUTs. Automated interfaces are compatible with high-volume manufacturing. Non-conforming parts with poor insulation or faulty grounding can be screened out rapidly to avoid defective units entering downstream assembly processes.

✅ CHT9951A/B High–Voltage Safety Tester | Reliability–Lab High–Voltage Validation Officer Role: Specialist for limit withstand-voltage and insulation-aging reliability tests on high-voltage components.

Main Functions: Maximum DC test voltage up to 15 kV; insulation-resistance measurement up to 999 GΩ; 9-level arc-detection function, specially designed for high-voltage limit breakdown tests.

Pain Points Solved: Supports R&D-phase reliability validation. By simulating extreme operating conditions, it evaluates insulation-aging endurance of components, and captures hidden failure risks including high-voltage breakdown and arc discharge. It verifies the design reliability of high-voltage components in advance and helps prevent high-voltage safety hazards on complete vehicles.

✅ CHT9931A High–Current Ground–Continuity Tester | Ground-Safety Verification Guardian Role: Inspector for grounding safety of motor and ECU metal housings.

Main Functions: Continuously adjustable DC output from 10 A to 100 A; ground-resistance measuring range: 0.1 μΩ ~ 600 mΩ.

Pain Points Solved: Verify the reliability of grounding loops for metal housings of motors and ECUs, complying with mandatory vehicle high-voltage-grounding safety specifications. Detect hidden risks such as loose-torque connections and poor contact to avoid high-voltage electric leakage and safeguard both occupants and vehicle safety.

Hopetech’s instruments are not intended for standalone operation. Together they form a full-lifecycle collaborative test workflow for high-voltage components. They meet the full-stage test requirements of vehicle OEMs and component suppliers, ranging from R&D laboratories to automated production lines, and guarantee safe and stable performance of NEV high-voltage auxiliary systems.