In hazardous industrial environments, motors must deliver more than powerful performance—they must provide reliable explosion protection, stable operation, and precise speed control.

The YBBP-BT4/CT4 Variable-Frequency Explosion-Proof AC Motor is specially designed for industrial facilities where methane or other combustible gases may be present. It is suitable for hazardous areas where explosive gas mixtures may occur and is available for applications requiring Ex db IIA T4 Gb and Ex db IIB T4 Gb explosion-proof protection.

With a variable-frequency design, high-performance insulation system, and independent forced ventilation, the YBBP series provides a safe, flexible, and energy-efficient drive solution for demanding industrial applications.

Designed for Variable-Frequency Operation

The YBBP series uses specialized insulation materials and an insulation system designed to withstand the high-frequency pulse voltage generated by variable-frequency drives.

Combined with a suitable VFD, the motor provides:

• 5–50 Hz constant-torque operation

• 50–100 Hz constant-power operation

• Stepless and wide-range speed regulation

• Excellent speed control performance

• Smooth and stable motor operation

• Flexible adjustment according to actual load requirements

This makes the YBBP series an ideal choice for equipment requiring frequent speed changes, precise control, or wide operating ranges.

Energy-Efficient Operation

Different industrial processes require different operating speeds. Running a motor continuously at full speed can result in unnecessary energy consumption.

The YBBP series can be operated with a variable-frequency drive to match motor speed and output to actual process requirements. By delivering power when and where it is needed, the system can help improve overall energy efficiency and reduce operating costs.

It is particularly suitable for variable-speed applications such as fans, pumps, compressors, conveyors, and industrial machinery.

Independent Forced Ventilation

Variable-frequency motors may operate at low speeds for extended periods, where the motor's self-cooling capability can be reduced.

The YBBP series is equipped with an independent cooling fan for forced ventilation, helping maintain effective heat dissipation across a wide speed range.

This design supports stable thermal performance and reliable continuous operation, especially in low-speed variable-frequency applications.

Wide Range of Power and Speed Options

The YBBP-BT4/CT4 series is available in a wide range of frame sizes and power ratings to meet different industrial drive requirements.

Main specifications include:

• 2-pole: 0.75–355 kW

• 4-pole: 0.55–355 kW

• 6-pole: 0.37–280 kW

• 8-pole: 0.18–220 kW

• Rated voltage: 380 V

• Constant-torque frequency range: 5–50 Hz

• Constant-power frequency range: 50–100 Hz

With multiple power and speed configurations, the series can be matched to a wide variety of industrial equipment and transmission systems.

Suitable for Hazardous Industrial Environments

The YBBP-BT4/CT4 motor is designed for applications where explosion-proof performance and variable-speed operation are both required.

Typical applications include:

• Oil & gas facilities

• Petrochemical plants

• Chemical processing facilities

• Coal mines and mining equipment

• Natural gas installations

• Hazardous-area ventilation systems

• Pumps

• Fans and blowers

• Compressors

• Conveyors

• Industrial production lines

• Other equipment operating in explosive gas atmospheres

Key Advantages

Explosion-Proof Design

Designed for hazardous environments where combustible gases or vapors may create an explosive atmosphere.

VFD-Compatible Insulation

Special insulation materials help withstand high-frequency pulse voltage generated during variable-frequency operation.

Wide-Range Speed Regulation

Provides 5–50 Hz constant-torque and 50–100 Hz constant-power operation for flexible speed control.

Independent Forced Cooling

An independent fan provides forced ventilation to support effective cooling, particularly during low-speed operation.

Energy-Saving Operation

Variable-speed control allows motor output to better match actual process requirements, helping reduce unnecessary energy consumption.

Reliable Industrial Performance

Built for demanding industrial applications requiring stable operation, precise control, and dependable power transmission.

YBBP-BT4/CT4

Safer Power. Smarter Speed Control. Reliable Performance.

The YBBP-BT4/CT4 Variable-Frequency Explosion-Proof AC Motor combines explosion-proof protection, wide-range variable-frequency operation, dedicated insulation technology, and independent forced cooling into one reliable industrial drive solution.

From oil and gas to chemical processing, mining, pumps, fans, compressors, and conveyor systems, the YBBP series provides safe, efficient, and flexible power for demanding hazardous-area applications.

YBBP Series — Reliable Power for Hazardous Environments.