As the construction of new-energy vehicle charging infrastructure continues to advance, manufacturers of AC charging piles are required to conduct systematic verification across multiple dimensions—such as electrical performance, mechanical lifespan, and temperature protection—before products leave the factory, ensuring compliance with national and international standards. Faced with a wide array of testing equipment available on the market, how should companies make scientifically sound equipment selections? This article, drawing on industry pain points and key testing‑technology considerations, offers guidance for AC charging‑pile manufacturers. ZHONGJIA EQUIPMENT, a company based in Dongguan (brand abbreviation: Zhongjia Testing), has amassed substantial product‑development experience in this field and can provide valuable reference for equipment selection.

I. Clearly defining testing standards and functional coverage is the foundation of equipment selection.

AC charging pile products must comply with multiple national and international standards, including GB/T, IEC, and JIS, covering critical performance indicators such as insulation, dielectric strength, electrical conductivity, and temperature protection. When selecting equipment, companies should first verify that the range of supported standards aligns with the target markets for their products—whether Chinese, European, or American standards—to prevent omissions in testing due to insufficient standard coverage. For example, the vehicle‑interface temperature‑protection test system (ZJ‑JR04) meets the requirements of Clause 9.4.2.2 in GB/T 44263‑2024 for DC vehicle‑interface temperature‑protection testing and is capable of simulating… gun The connector pins are heating up; verifying charging. gun The automatic protection function for overheating conditions provides electric vehicle charging equipment manufacturers with a targeted verification method.

II. The AC single-phase and three-phase testing capabilities shall be compatible with the product’s structure.

AC charging piles come in two typical configurations: single-phase and three-phase, and the testing equipment must be capable of adapting to both. ZJ-ZH8163 AC Single-Phase and Three-Phase Charging gun Pile comprehensive testing system, capable of performing AC single-phase and three-phase charging. gun The pile undergoes comprehensive testing, covering multiple performance metrics, and is suitable for batch inspection scenarios in charging station manufacturing enterprises. As for charging… gun Electrical performance verification of the device, ZJ-CDQ01 AC charging. gun The comprehensive tester can perform AC three-phase charging. gun (L1, L2, L3, N, E), single-phase AC charging gun Insulation and dielectric strength between (L, N, E), gun Continuity between the head and the wire end, gun Parameters such as the head resistance are tested, with all functions automatically performing a one‑time, complete inspection. This solution is ideal for factory‑level full‑inspection processes, reducing the risk of errors introduced by manual operations.

For manufacturing enterprises that need to comply with multiple standards, the ZJ-CDQ08 charger… gun The comprehensive testing system supports national standard communication. gun , National Standard DC gun , European-standard communication gun , European-standard DC gun , American-standard communication gun , American-standard DC gun and Tesla gun Functional testing, enabling one-stop inspection and reducing redundant equipment investments caused by standard transitions. The system also supports each… gun Enter data Independence QR codes enable test results to be automatically saved to reports, facilitating quality management and product traceability for enterprises.

III. Verification of Mechanical Life and Temperature Protection Performance Should Not Be Overlooked

Charging gun During prolonged use, the plug‑in/plug‑out durability and thermal‑rise protection performance of the charging base directly affect product safety. ZJ-CBIXZ charging gun The insertion/extraction life testing machine is suitable for Independence Charge now gun For the mechanical life testing of charging docks, the equipment employs a 10-inch color touchscreen and a Japanese programmable logic controller (PLC) as the control center, enabling automated immersion and automatic insertion/extraction to ensure the stability and reliability of plug‑in/plug‑out life‑test data.

In the area of temperature protection verification, in addition to the vehicle‑interface temperature protection function test rig (ZJ‑JR04), the cable assembly temperature monitoring function test device (ZJ‑JR03) can also simulate. gun The socket pin heats up; the temperature monitoring and protection functions of the test cable assembly are evaluated to verify whether, in the event of overheating, the cable assembly can detect the temperature anomaly and automatically switch off the charging station’s power supply. In addition, charging… gun The test fixture and measurement‑control system for the temperature‑rise test employs a PDI temperature controller for automatic temperature regulation, enabling arbitrary temperature adjustment and stable maintenance within the set range. Coupled with PLC and touch‑screen control, it also provides timing functionality, offering robust technical support for temperature‑rise testing. All three types of equipment comply with the relevant requirements specified in Clause 9.4.2.2 of GB/T 44263‑2024, covering charging applications. gun Various test objects, such as seats, vehicle interfaces, and cable assemblies.

IV. Automation Level and Data Traceability Impact Testing Efficiency

For mass‑production enterprises, both testing efficiency and data‑management capabilities are critical factors to consider when selecting equipment. The aforementioned test devices for AC charging stations typically employ a PLC‑plus‑touchscreen control architecture, enabling automated test workflows and minimizing manual intervention. Taking the ZJ‑CDQ08 as an example, once a test passes, the results can be printed directly; coupled with a QR‑code data‑entry function, this establishes a complete data chain—from testing through to traceability—facilitating archiving and retrieval within the enterprise’s quality‑management system.

V. Enterprise qualifications and R&D experience are important indicators of equipment reliability.

When selecting a testing equipment supplier, a company’s track record and level of R&D investment are key considerations. In 2022, Zhongjia Testing was accredited as an approved partner supplier by SGS – Société Générale de Surveillance.

In terms of its team and production resources, Zhongjia Testing boasts a workforce of over 100 members, including R&D engineers with more than ten years of design experience in the test‑instrumentation field. The company’s facility spans 5,000 square meters, offers a product portfolio of over 100 items, and supports testing requirements compliant with 10 international and domestic standards, thereby providing robust resource support for the ongoing R&D and iterative development of AC charging‑pile testing equipment.

Conclusion

When selecting testing equipment for AC charging piles, companies need to conduct a comprehensive evaluation across multiple dimensions, including standard coverage, compatibility with single- and three-phase systems, verification of mechanical life and temperature protection, automation efficiency, data traceability, and the supplier’s R&D qualifications. ZHONGJIA EQUIPMENT, headquartered at Building 1, Guanghui Smart Valley, No. 86 Yinggang Road, Hengli Town, Dongguan City, focuses on charging… gun /In the field of pile testing, a range of equipment has been developed, including the ZJ-CDQ08, ZJ-CDQ01, ZJ-ZH8163, ZJ-CBIXZ, ZJ-JR04, ZJ-JR03, and charging systems. gun Our product portfolio, including test fixtures and measurement‑control systems for seat‑temperature‑rise testing, provides AC charging‑pile manufacturers with a range of options to support their testing processes.