*Technology/project introduction (background, status, characteristics, etc.): BPJ1 -315(250)/660 mining flameproof and intrinsically safe AC frequency converter consists of a control board, power adapter board, power module, filter capacitor, reactor, filter, emergency soft start and other devices, and these devices are all imported products, ensuring the reliability and service life of the product. and has obvious energy-saving effect.  

*Main technical indicators: This product is suitable for underground coal mines containing flammable gases mixed with methane and dust. It uses an asynchronous motor with an AC of 50Hz and a rated voltage of 660V to control the process of heavy load soft starting, soft stopping and frequency conversion speed regulation to control the starting current and stable starting., reliable operation, and little impact on the power grid; complete harmonic treatment measures have small harmonic content and no impact on the power grid; motor insulation protection treatment ensures reliable operation of the motor.  

*Current application situation: PJ1 -315(250)/660 mining flameproof and intrinsically safe AC frequency converter is a high-tech product that integrates digital frequency conversion speed control devices and related heat dissipation technologies. The quick-opening structure, the color display screen is easy to maintain, and the motor protection function and alarm function are improved. It is the ideal AC motor dragging equipment at present. It is widely used in coal, papermaking, machinery, scientific research, science and technology, machinery, sales, petrochemicals, coal mining, metal processing and other fields.  

*Application prospects of "civilian joining the army" or "military conversion": Products are widely used in military equipment supporting facilities, and military units are welcome to cooperate in development and application.