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In industries such as petrochemicals, coal mining, and metallurgy, flammable and explosive gases or dust are frequently present, placing stringent requirements on equipment speed control accuracy and energy consumption control. Ordinary motors cannot withstand the risk of explosion and are ill-suited to the dynamic adjustment needs of the load. The YBBP series inverter duty explosion proof electric motor integrate efficient variable frequency speed regulation with explosion-proof safety protection. With their targeted technical design, they have become the preferred power equipment for hazardous locations, balancing safety and efficiency.
A robust explosion-proof structure, building a solid safety barrier for high-risk environments. The YBBP series inverter duty atex explosion proof asynchronous electric motors strictly comply with national standards GB3836.1 and GB3836.2, with explosion-proof ratings reaching Ex dⅡA T4, Ex dⅡB T4, and Ex dⅡC T4. They are safe for use in Zone 1 and Zone 2 hazardous environments containing methane, various flammable gases or vapors that form explosive mixtures with air. Its outer shell is made of high-strength cast steel, with precision-machined explosion-proof gaps and a multi-layer sealing structure. This not only achieves an IP55 or higher protection rating, effectively preventing dust and moisture intrusion, but also blocks the spread of flames in the event of an abnormal arc inside the motor, fundamentally mitigating the risk of explosion. Key components have undergone explosion testing and can withstand harsh operating conditions from -15℃ to 40℃, making it suitable for high-risk environments such as underground coal mines and chemical workshops.
Wide-range variable frequency speed regulation balances precise control and energy efficiency. When used with a frequency converter, this series of motors can achieve stepless speed regulation within a wide range of 3-100Hz, with constant torque speed regulation from 3-50Hz and constant power speed regulation from 50-100Hz. The speed range can be further expanded in vector control mode, offering fast dynamic response and high speed regulation accuracy, precisely matching the load changes of equipment such as fans and pumps. Utilizing F-class insulation materials and proprietary processes resistant to high-frequency pulse voltage impacts, it effectively resists voltage surges under variable frequency conditions, preventing insulation aging. Compared to traditional fixed-speed motors, its energy efficiency meets the GB18613-2012 Class II standard. It can automatically adjust power output according to load requirements, achieving annual energy savings of 15%-30% in scenarios such as petrochemical fluid transportation and mine ventilation, significantly reducing long-term operating costs.
It offers stable power output, suitable for heavy-duty and long-term operation. The YBBP series motors cover power ranges from 0.12-315kW, frame sizes from 80-355mm, and pole numbers can be selected from 2-16 to meet the power adaptation needs of different equipment. Its strong overload capacity allows it to withstand 160% rated torque overload for up to 1 minute, easily handling heavy loads during equipment startup and load fluctuations during operation, preventing stalls and shutdowns. Optimized heat dissipation design for variable frequency operation; models with frame sizes of 160 and above are equipped with independent fans for forced ventilation, providing a large temperature rise margin and operating temperatures below national standard limits. Combined with precision-machined rotor components and optimized bearing structures, vibration and noise are significantly lower than similar products, extending service life by more than 30% compared to ordinary explosion-proof motors. This reduces maintenance frequency in high-risk environments, ensuring continuous production.

Flexible and adaptable design enhances maintenance convenience and versatility. The power ratings and installation dimensions of this series of motors conform to IEC international standards and are compatible with the installation dimensions of traditional YB2 series motors, facilitating equipment upgrades and replacements, and compatibility with imported equipment. Protection configurations can be customized as needed, offering outdoor versions for moderate corrosion (WF1), strong corrosion (WF2), and humid tropical (TH) environments, adapting to different regional climates and corrosive workshop environments. The junction box position can be flexibly adjusted to top-left or top-right orientation, supporting threaded steel conduit wiring or explosion-proof grate connector wiring, adapting to complex installation layouts. Some models can be embedded with intelligent sensing units to achieve remote monitoring and fault early warning, reducing the risk and labor intensity of on-site operations for maintenance personnel.
In summary, the YBBP series inverter duty explosion proof electric motors safeguard safety with reliable explosion-proof performance, enhance efficiency with precise frequency conversion characteristics, and balance stability, adaptability, and long-term performance, perfectly meeting the core power needs of hazardous locations. At a time when safe production and cost reduction/efficiency improvement have become industry consensus, this series of motors provides high-risk industries with a power solution that combines safety and efficiency, contributing to high-quality industrial development.
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