*Technology/project introduction (background, current situation, characteristics, etc.): BPJ1 -315(250)/660 mining flameproof and intrinsically safe AC frequency converter is a high-tech product that integrates digital frequency conversion speed regulating device and related heat dissipation technology.  

*Main technical indicators: BPJ1 -315(250)/660 mining flameproof and intrinsically safe AC frequency converter has obvious energy-saving effects. The frequency converter has small starting current, smooth 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;3. Motor insulation protection treatment ensures reliable operation of the motor. The quick-opening structure is easy to maintain;4. The color display screen improves the motor protection function and alarm function. It is the ideal AC motor dragging equipment at present.  

*Current application situation: This product is suitable for underground coal mines containing flammable gases mixed with methane and dust. It uses an asynchronous motor with an AC 50Hz and a rated voltage of 660V to control the heavy load soft start, soft stop and frequency conversion speed regulation process. Reactors, filters, emergency soft start and other devices are added to the main circuit as needed. The control board, power adapter board, power module, filter capacitor, etc. are all imported products to ensure the reliability and service life of the product.  

*Application prospects of "civilian joining the army" or "military conversion": This product is widely used in the preparation of military production, and military units are welcome to negotiate, cooperate, develop and apply.