What are the application scenarios and daily maintenance considerations for AC load banks?

500kW Load Bank

Main application

Power equipment testing: It is used to test the load-carrying capacity, stability and efficiency and other performance indicators of power equipment such as generators, UPS (uninterruptible Power Supply), inverters, etc. By connecting AC load banks of different sizes, the working states of power supply equipment under various load conditions can be simulated to test whether it can operate normally under various working conditions and output stable voltage and frequency.

Electrical product aging test: During the production process of electrical products, AC load banks can be used to conduct aging tests on products such as lamps, transformers, and motors. By applying a certain load for a long time, the aging process of the internal components of the product is accelerated, potential quality problems are detected in advance, and the reliability and stability of the product are improved.

Power system commissioning: During the installation, commissioning and maintenance of power systems, AC load banks can be used as temporary loads to test the performance of transmission lines, substation equipment, etc. For instance, before a new line is put into operation, by connecting to an AC load banks, the current-carrying capacity of the line, voltage drop, and the operating characteristics of the protective devices, etc., are inspected.

Supplementary daily maintenance precautions

Inspection of resistance components: The resistance components in the AC load bank are the main parts that consume electrical energy. After long-term use, problems such as changes in resistance values and uneven heating may occur. Regularly inspect the appearance of the resistance components to see if there are any signs such as overheating discoloration or damage. Use a professional resistance tester to measure the resistance value and ensure it is within the specified error range. If the resistance components are found to be damaged, resistors of the same specification should be replaced in time to ensure the normal operation of the load bank.

Control circuit inspection: The control circuit of the load bank is responsible for functions such as controlling the connection and disconnection of the load and adjusting the size of the load. Regularly inspect the circuit board of the control circuit to see if there are any problems such as component damage or solder joint detachment. Check whether the control switches, buttons and other operation components are flexible and reliable. If there is any jamming or poor contact, they should be repaired or replaced in time. At the same time, clean the dust and debris on the circuit board to prevent short circuits or malfunctions caused by dust accumulation.

Safety protection device inspection: AC load banks are usually equipped with safety protection devices such as overcurrent protection, overvoltage protection, and overheat protection. Regularly check whether these protective devices are working properly. You can test whether the actions of the protective devices are sensitive and reliable by simulating fault conditions. For instance, by gradually increasing the load current, observe whether the overcurrent protection device acts promptly at the set current value to cut off the load circuit. If any problem with the safety protection device is found, it should be repaired or replaced immediately to ensure that the load bank can effectively protect the equipment and personnel safety in case of abnormal situations.