Development of Shanghai Huatong Kai Guanchang
In the mid-1950s, Huatong Kai Guanchang was able to produce low-voltage air switches, high-voltage oil circuit breakers, disconnectors and various electrical control equipment. 1955, the low-voltage air switch with plastic shell was successfully trial-produced. At the end of 1950s, a 220kV EHV multi-oil circuit breaker was manufactured. 1958 opened a new factory in pengpu. 1959 trial production 1 10 kV high-voltage low-oil circuit breaker and electronic automation device. In the early 1960s, the rapid excitation regulator for diesel generators below 1500 kW and turbo generators below 2,500 kW, and the SCR excitation regulator for generators below 300,000 kW were successfully trial-produced. In addition, 22 new products, such as various near and remote devices, remote control and telemetry devices, have been successfully trial-produced. In 1970s, 27.5/35kV sulfur hexafluoride circuit breaker and 200A electronic switch were successfully trial-produced. In 1980s, various vacuum contactors and circuit breakers such as 6 kV /600 A, 10 kV/600 A were successfully trial-produced, and 165, 438+00kV, 220 kV high-voltage fully enclosed and open sulfur hexafluoride combined appliances were successfully trial-produced. In addition to the trial production of new products, the factory has also transformed the switchboard workshop, and built a new sulfur hexafluoride combined electrical hall and a high-voltage cut-off test station. , and imported 100 ~ 3000 amp automatic switch manufacturing technology from the United States, and imported 10 ~ 35 kV sulfur hexafluoride circuit breaker, extremely low frequency high voltage circuit breaker and MNS switch board from Switzerland, which further improved the production capacity and technical level. Huatong Kai Guanchang's products are sold all over the country and more than 30 countries and regions around the world.