DC Load Box

The AY-DC-R DC load bank is equipped with a pure resistive load module; it can simulate various power loads and meet the full-load testing requirements for generator sets, machine rooms, and other power supply systems, making it an essential testing tool for production workshops, laboratories, installation and commissioning sites, as well as scientific research and development facilities.

Get a Quick Quote Whatsapp

Category: Load Bank Series

Product Features

DC Load Box Product Features:

Load characteristics: Resistive loads utilize stainless steel alloy resistors. These stainless steel alloy resistors are custom-designed products developed independently by our company, featuring a low temperature coefficient and low inductance.
Resistor Selection: The resistors utilize high-melting-point nickel-chromium wire with a melting point of over 1200 °C; since the design load is only 50% of the material’s rated load, they can operate stably and continuously over an extended period;
The load is cooled by forced air cooling using an axial flow fan, enabling continuous long-term operation of the load.
The bottom of the cabinet is equipped with universal casters with brakes, while the top of the cabinet is equipped with a load-bearing suspension ring.
During load/unload testing, the accuracy is ≤ ±3%, the resistance temperature coefficient is low, the power variation under both cold and hot conditions is minimal, and the accuracy surpasses that of other resistive loads.
Load switching method: The system can be controlled via a local manual rotary knob, or the customer’s host computer can switch the load between various power levels.

DC Load Box Product Protection:

Load Protection: Since the load box is required to operate for extended periods, a comprehensive load monitoring and load protection system is extremely important.
Thermal Protection: During each test, the operator must first turn on the cooling fan before the system is permitted to perform load increment or decrement operations.
Fan fault protection: The system only permits load increment or decrement when the fan is running and operating normally;
Overtemperature Protection: When a system fault occurs and causes the load to exceed its temperature limit, the system automatically disconnects the load, thereby providing protection for the load.
Emergency Stop Protection: When a load fault or a fault occurs in the tested equipment, pressing the emergency stop switch will halt the test.
Short-circuit protection and overcurrent protection: A fuse is installed at the output terminal of the load box; in the event of a system short-circuit fault, the load will be automatically disconnected.

Technical Parameters

product name	DC Load Box
product model	AY-DC-R
loadtype	Resistive
bracket	Resistive load: 1W,2W,5W,10W,20W,… up to 1000 kW; load accuracy error ≤ 3±%
rated voltage	DC 24.28 V, 30 V, 50 V; 100 V, 200 V… up to 1000 V
Load accuracy	Resistance: ±3%
Load Control Method	1. Local manual control (manual adjustment of the load box) 2. Remote automatic control (provides communication ports and communication protocols)
communication mode	Ethernet
Electrical parameter measurement	It can display the load current and voltage for each group locally and upload the data to a host computer.
Load Protection	Load overtemperature protection, fan protection, emergency stop protection, heat dissipation protection, short-circuit protection, and overcurrent protection
operate mode	Suitable for long-duration continuous operation; it can operate continuously when the heat dissipation fan is running.
Load connection method	Copper busbar lead-out;
Load cooling method	Axial flow fan with forced air cooling, forward airflow, rear exhaust.
Altitude used	<6,500 meters
operating ambient temperature	－20℃～+55℃
product size	Customizable dimensions according to customer requirements
Product installation location	indoor
Total product weight	Varies with changes in power level