欧美国产日韩极速在线_A级无码毛片久久18精品_亚洲香蕉一区二区三区在线观看_程女士1v3沙发那段_亚洲黄色视频男人的天堂_老熟女富婆激情刺激对白_东方av成人在线_亚洲国产精品免费线观看_国产一级毛片视频_日韩免费一区二区

The QJR Series Flame-proof and Intrinsically-safe Vacuum AC Soft Starter for Mining Applications is the latest generation high-tech product developed and produced using BENSHAW's control technology. The device is suitable for underground coal mine pumps, fans, belt conveyors, armored face conveyors, air compressors, chain drive devices and other equipment transportation equipment with potential exposure to combustible  gas or coal dust.

The microprocessor control unit uses original BENSHAW products imported from the United States and features the latest control algorithm. It is designed to provide a wide range of state-of-the-art soft start modes and motor protection features. This device features safe and reliable operation, easy maintenance, long service life, and outstanding start-up performance, which helps to eliminate mechanical and electrical shock, extending the service life of the equipment.

1. Rated Operating Voltage: AC1140V/AC660(+10% to -25%);

2. Rated Operating Current: 400A, 200A;

3. Maximum current overload multiplier during soft start: adjustable up to 800%;

4. Current Limit: 1～8Ie;

5. Starting Voltage: 0～100% Ue;

6. Cooling Mode: Natural cooling;

7. Soft start time: 1～60s;