The XL-A3612 DC programmable load is our company's sincere contribution to electric vehicle charger enterprises and related institutions. This product is mainly used as a programmable, automatic gear-shifting electronic resistive load for our company's off-board charger laboratory test platform and off-board charger field test instruments. It features stepwise operation on demand and multi-box cascading; it meets the load requirements of standards and regulations such as "JJG 1149-2022 Electric Vehicle DC Charger Verification Regulations" and "NB/T 33008.1～33008.2-2018 Electric Vehicle Charging Equipment Testing Specifications."

Design Specifications

• Safety Specifications: DC1500V safety design;
• Ambient Temperature: -20℃ to 45℃;
• Operating Curve:

Functional Features

1. Capable of achieving power and energy verification points required by "JJG 1149-2022 Electric Vehicle Off-board Charger Verification Regulations" and "NB/T 33008.1～33008.2-2018 Electric Vehicle Charging Equipment Testing Specifications";
2. Equipped with automatic gear-shifting function; at rated voltage, minimum current step is 0.009A, with 262,144 levels per device;
3. Features constant power function, covering the full voltage range of 416V to 1500V in the constant power zone;
4. Capable of simulating the entire charging process of electric vehicle power batteries, such as constant current mode, constant voltage mode, constant power mode, constant resistance mode, etc.;
5. Has voltage and current calibration correction functions, allowing calibration and correction of the load's resistance levels at any time to ensure loading accuracy during long-term use;
6. Supports cascading expansion, with DC maximum expansion up to 1250kW;
7. Equipped with multiple communication interfaces such as RS-232 and CAN;
8. Can be controlled via local touch display or serial port, with a user-friendly human-machine interface for easy operation;
9. The load features powerful control algorithms and DSP digital control, suitable for various high-precision, high-speed, and high-stability load regulation requirements;
10. Features dynamic cooling mode, adjusting cooling intensity in real time based on load temperature, achieving both energy-saving quiet operation and strong cooling;
11. Uses forced air cooling, with an ARM Cortex-M4 based mainboard controlling relays to manage cooling system fans, efficiently cooling the device while saving power costs;
12. Equipped with intelligent fan temperature control; when the load box temperature is too high, it actively disconnects the load for high-temperature protection and issues an alarm; when the temperature reaches a safe level, the fan stops automatically; temperature inside the box can also be monitored via debugging serial port;
13. Features emergency stop function, allowing immediate disconnection of the charging circuit and load levels in case of emergencies; the fan continues to operate to prevent internal component damage from overheating, ensuring personnel safety and property protection;
Each load has a built-in 400A fuse for short-circuit protection and also includes overcurrent, overvoltage, and overtemperature protection functions.

Technical Specifications