The higher the voltage in the transmission network, the less heat work is lost during the transmission process, so the high-voltage power utilization efficiency is high. For generator sets, high voltage means higher cost performance. However, after the generator group's outlet voltage is increased, the requirements for insulation are also higher. Due to the manufacturing process of components, the range of insulation resistance of the generator set can be limited, so the output voltage cannot be increased without limit. At present, the mainstream high-voltage generator sets are mostly limited to 10.5KV.

      The load detection equipment of the high-voltage generator set also faces technical difficulties. At present, the test is carried out by means of a low-voltage load cabinet plus a step-down transformer. However, this method is used for voltage conversion equipment, the system is complex, the probability of failure is large, and the measured values are also biased, which is not an ideal solution.

      Shenzhen Weirhua Co., Ltd. has made breakthroughs in the research and development of high-voltage loads in recent years, and has produced a variety of typical products, which are widely favored by users. These high-voltage loads can withstand a voltage of 10.5KV, meet the detection requirements of mainstream high-voltage generator sets, and can be directly connected to the output end of the high-voltage generator set, eliminating the need to transit through the transformer, thus avoiding various problems of the past scheme.

      Weirwa high-voltage load puts power safety first, strictly control the insulation standard of the load cabinet, and the resistance between the chassis and the neutral line and the phase A and phase B/C is greater than 20000V/min, and the insulation resistance is consistent. Power equipment handover test standards. The load consists of special alloy resistors, using new power components, military quality, good heat dissipation, and operating temperature is only 1/3 of the design temperature. Special insulation plates are used in the load box, and the contactors and cables are all dedicated to high voltage power.

      Weihua has been engaged in the research and development of load boxes for nearly 20 years. The company has passed the dual-soft certification of the Ministry of Information Industry, the ISO9001 international quality system certification and the Guangdong high-tech enterprise certification. The flagship product "High-power marine generator set intelligent AC load cabinet" won the China International Patent and Brand Expo Special Award and the Guangdong Provincial Science and Technology Achievement Certificate. After launching the high-voltage series load, Weirwa has demonstrated wide adaptability in many well-known institutions and applications.

      The AC10.5KV-1760KW high-voltage AC load cabinet developed and produced by Weihua serves the emergency power supply vehicle of the State Grid. The well-known generator set manufacturer Xingguang Power Equipment Co., Ltd. also uses the AC-3000KW high-voltage intelligent test system produced by Welch. The system is highly intelligent, fully automatic loading, and convenient for data processing. The AC10.5KV-2000KW high-voltage load box serving the Sports Color Data Center is also very cost-effective.

      In addition, Weihua's AC10.5KV/6KV-9000KVA intelligent high-voltage load manufactured by China Development Co., Ltd. is flexible in design, and can connect up to 10 loads in parallel. It is also compatible with the old load that the user has, and has excellent expansion potential. The 14700KVA marine high-pressure dry load box built for Guangzhou China Shipbuilding Huangpu Shipbuilding Co., Ltd. can be applied to 400V to 10.5KV generators of various specifications. It is the load system with the largest installed capacity in China at that time.

      Welch high-voltage load accurately tests the load capacity of the high-voltage generator set for the above-mentioned users, and tests all electrical parameters including dynamic parameters to ensure the safe operation of the generator set. Particularly valuable is that the above load systems are all operating outdoors, and in the high temperature, strong wind, and humid environment, the reliable quality of the Willow high-voltage load is reflected.