Unlock High Efficiency: AC Feedback Load, Reshaping New Standards for Power Testing!

Publish Time: 2025-10-29

With the vigorous development of the new energy vehicle industry, the testing and aging verification of charging infrastructure have become key links in ensuring safety and efficiency. In traditional testing methods, energy-consuming loads not only result in energy waste but also face challenges such as high heat dissipation costs and low testing efficiency. Against this backdrop, the ZJ30K-ACH3 AC feedback load, with its energy feedback technology and high-precision control capabilities, provides an innovative solution for testing single-phase/three-phase AC charging guns and charging piles, redefining industry standards for power testing.

AC Feedback Load ZJ30K-ACH3 The ZJ30K-ACH3 AC feedback load is suitable for testing and aging single-phase and three-phase AC charging guns and charging piles. This energy-saving aging feedback load can transmit the output power of the product under test to the grid after exchange processing, thus saving energy and meeting test requirements.

I. Energy Feedback: A Breakthrough from "Consumption" to "Circulation"

In traditional testing, the electrical energy output by charging devices is typically converted into thermal energy through resistive loads, resulting in an energy utilization rate of less than 30%. The ZJ30K-ACH3 AC feedback load adopts a two-stage AC-DC-AC conversion structure, where the front-end AC/DC converter transforms AC power into DC power, and the rear-end DC/AC inverter feeds high-quality electrical energy back to the grid, achieving energy circulation. This technology increases energy utilization to over 85%, with a single device capable of saving tens of thousands of kilowatt-hours of electricity annually, significantly reducing testing costs.

For example, a charging pile manufacturer reported a 60% reduction in energy consumption costs for aging tests after introducing the ZJ30K-ACH3. Additionally, the need for dedicated heat dissipation equipment was eliminated, greatly improving the workshop environment by reducing temperature control challenges.

II. Full-Scenario Adaptability: Single-Phase/Three-Phase Compatibility for Diverse Testing Needs

The ZJ30K-ACH3 supports single-phase 220V and three-phase 380V inputs, with a power range covering up to 30kW, enabling flexible adaptation to various charging device testing requirements:

Charging Gun Testing: Simulates real-world user scenarios to verify electrical performance and thermal stability under constant current and constant voltage modes.

Charging Pile Aging Tests: Evaluates device longevity and reliability through prolonged continuous operation under full-load conditions.

Grid Compatibility Verification: Supports harmonic injection and power factor adjustment functions to ensure compliance with international standards such as IEC 61000-3-2.

Its CC/CV/CP/CR multi-mode control capability accurately simulates battery charging characteristics, assisting R&D teams in optimizing control algorithms and enhancing product market competitiveness.

III. Intelligent Control: Precision, Stability, and Ease of Operation

The ZJ30K-ACH3 is equipped with a Digital Signal Processor (DSP) and a high-speed sampling system, achieving millisecond-level response times:

Dynamic Load Regulation: Supports 0.1% precision current/voltage control to simulate dynamic changes in battery State of Charge (SOC), testing the dynamic response capabilities of charging devices.

Harmonic Analysis and Suppression: Built-in 50-order harmonic monitoring actively compensates for current harmonics, ensuring feedback power meets grid interconnection standards (THD < 5%).

Remote Monitoring and Data Management: Interfaces with LAN/CAN for real-time data recording and visualization via upper computer software, enhancing R&D efficiency.

A third-party testing institution reported a 40% reduction in charging pile testing cycles and a 99.5% improvement in data accuracy after adopting the ZJ30K-ACH3, providing reliable evidence for certification processes.

IV. Safety and Reliability: Multi-Layer Protection for Worry-Free Operation

Designed for high-power testing scenarios, the ZJ30K-ACH3 incorporates a six-layer safety protection mechanism:

Overvoltage/Overcurrent Protection: Real-time monitoring of input/output parameters with automatic circuit disconnection within 0.1ms in case of abnormalities.

Overheating Protection: Dual temperature sensors monitor power devices, automatically reducing load under overheating conditions.

Islanding Protection: Stops inversion within 0.02s during grid outages to prevent "islanding effect" safety hazards.

Phase Sequence Adaptation: Automatically identifies three-phase input phase sequences to avoid equipment damage from wiring errors.

Software Watchdog: Prevents program runaways to ensure long-term system stability.

Electromagnetic Compatibility (EMC) Design: Passes conducted and radiated interference tests for operation in complex electromagnetic environments.

These features result in an average Mean Time Between Failures (MTBF) exceeding 50,000 hours, meeting 24/7 continuous testing requirements.

V. Industry Applications: Driving High-Quality Development of Charging Infrastructure

The ZJ30K-ACH3 AC feedback load is now widely used in new energy vehicles, power electronics, energy storage systems, and other fields:

Automotive R&D Centers: Accelerates charging device development cycles and shortens product launch timelines.

Third-Party Testing Institutions: Enhances certification testing efficiency, aiding enterprises in obtaining international certifications such as CE and UL.

Charging Pile Operators: Reduces equipment maintenance costs and improves operational profitability.

Statistics show that customers using the ZJ30K-ACH3 achieve an average 55% reduction in testing costs and a 30% increase in first-pass rates, setting a benchmark for industry energy conservation and quality improvement.

Driving a Green Future Through Technological Innovation

The ZJ30K-ACH3 AC feedback load addresses challenges such as high energy consumption and low efficiency in traditional testing methods through energy feedback technology, intelligent control algorithms, and high-reliability design. It provides an efficient, precise, and safe solution for large-scale testing of charging infrastructure, becoming a core tool for ensuring product quality and accelerating energy transformation. As the new energy vehicle industry continues to expand, such devices will play a pivotal role in achieving "dual carbon" goals.