Application of Sunwin high-power high-voltage load bank in various industries

The higher the voltage in the transmission network, the less heat and work is lost during the transmission process, so high voltage electricity has a high utilization efficiency of resources. For generator sets, high voltage means higher cost performance. However, after the generator set outlet voltage is increased, the insulation requirements are also higher. Due to the manufacturing process of components, the insulation resistance of the generator set can reach a limited range, so the output voltage cannot be increased indefinitely. At present, the mainstream high-voltage generator sets are mostly capped at 10.5KV voltage.

The load detection equipment of high-voltage generator sets also faces technical difficulties. At present, most of them are tested by adding a low-voltage load cabinet to a step-down transformer. However, this method uses many devices for voltage conversion, the system is complex, the probability of failure is high, and the measured values are also biased, which is not an ideal solution.

Qingdao Sunwin Technologies Co., Ltd. has made breakthrough progress in the research and development of high-voltage loads in recent years, and has produced a number of typical products that are widely favored by users. These high-voltage loads can withstand a voltage of 10.5KV, meeting the detection requirements of mainstream high-voltage generator sets. They can be directly connected to the output end of the high-voltage generator set without the need for a transformer, avoiding various problems in previous solutions.

Sunwin puts power safety first and strictly controls the insulation standards of the load cabinet. The voltage resistance between the chassis and the neutral line and between the A phase/B phase/C phase is greater than 20,000V/minute, and the insulation resistance meets the power equipment handover test standards. The load is composed of special alloy resistors, using new power consumption components, military quality, good heat dissipation, and the operating temperature is only 1/3 of the design temperature. Special insulation boards are used in the load bank, and the contactors and cables are dedicated to high voltage electricity.

Sunwin has been engaged in the research and development and production of load banks for so many years. The company has passed the dual-soft certification of the Ministry of Information Industry and the ISO9001 international quality system certification. After Sunwin launched the high-voltage series load, it has been used in many well-known institutions and applications, showing broad adaptability.

The AC10.5KV-1760KW high-voltage AC load cabinet developed and produced by Sunwin serves the emergency mobile power supply vehicle of the State Grid. The well-known generator set manufacturer Power Generation Equipment Company also uses the AC-3000KW high-voltage intelligent test system produced by Sunwin. The system is highly intelligent, fully automatic loading, and convenient data processing. The AC10.5KV-2000KW high-voltage load bank serving the sports data center is also very cost-effective.

In addition, the AC10.5KV/6KV-9000KVA intelligent high-voltage load manufactured by Sunwin for China Development Co., Ltd. is flexible in design, can connect up to 10 loads in parallel, and can also be compatible with the user's existing old loads, with excellent expansion potential. The 14700KVA marine high-voltage load bank built for Guangzhou CSSC Huangpu Shipbuilding Co., Ltd. can be used for generator testing of various specifications from 400V to 10.5KV, which was the load system with the largest installed capacity in China at that time.

Sunwin high-voltage loads accurately test the load capacity of high-voltage generator sets for the above users, and test all electrical parameters including dynamic parameters to ensure the safe operation of the generator sets. What is particularly valuable is that the above load systems are all operated outdoors, in high temperature, strong wind, and humid environments, which further reflects the reliable quality of Sunwin high-voltage loads.