YBBP high-voltage explosion-proof frequency motor

YBBP High-Voltage Explosion-Proof Frequency Motor — Variable Speed Drive Solution for Hazardous Industrial Environments

The YBBP high-voltage explosion-proof frequency motor covers a power range of 185–1800 kW and voltage levels from 3000 V to 11000 V, designed for applications where flameproof enclosure and variable frequency operation must work together. Engineers in chemical, petrochemical, mining, and power generation sectors select this series when standard motors cannot satisfy both explosion protection and VFD compatibility at high voltage. Shaanxi Qihe Xicheng Electromechanical Equipment Co., Ltd. (XCMOTOR) supplies this series through partnerships with more than 30 motor manufacturers, including ABB, Siemens, Wolong, and XEMC.

About XCMOTOR

Shaanxi Qihe Xicheng Electromechanical Equipment Co., Ltd. (XCMOTOR) has maintained cooperative relationships with more than 30 motor manufacturers for over 20 years. The company operates with a SAP factory management system and works with manufacturer R&D teams to match each customer's power and site requirements.

Products supplied through XCMOTOR carry certifications including CCC, CE, ISO9001:2000, CRCC, CQC, UL, GOST, and China Energy Saving Production Certification. Standard and application-specific configurations are both available, with dedicated support available Monday through Sunday.

Technical Challenges This Motor Addresses

Technical Design Features

Voltage range — Available in 3000 V, 3300 V, 6000 V, 6600 V, 10000 V, and 11000 V, each with ±5% tolerance. This covers the most common high-voltage grid standards used in industrial facilities.

Insulation system — Stator windings use Class F insulation material rated at 155°C and undergo vacuum pressure impregnation (VPI) treatment, resulting in a breakdown voltage of ≥30 kV. This level of insulation protects windings against harmonic voltages produced by variable frequency drives.

Overvoltage protection — A high-voltage zero-sequence current transformer and overvoltage protection device are integrated into the motor circuit. These components disconnect power during lightning overvoltage events or abnormal grid conditions.

Rotor construction — The rotor uses stacked high-permeability silicon steel laminations. Each rotor assembly undergoes precision dynamic balancing to maintain a speed fluctuation rate of ≤0.5% across the operating range.

Explosion-proof enclosure — The flameproof (Ex d) enclosure is integrally manufactured to maintain the required joint surface geometry: width ≥15 mm and gap ≤0.15 mm. Cable entry points are fitted with flame-retardant sealing rings.

Key Technical Specifications

Production Process

Electromagnetic design is optimized for combined high-voltage and variable frequency operation. Stator windings are wound with precision equipment, then treated with VPI technology to fully consolidate the insulation system before curing.

The rotor assembly uses stacked high-permeability silicon steel laminations. After assembly, each rotor undergoes dynamic balancing to keep speed fluctuation within ≤0.5% across the full operating range.

Junction boxes are sealed to explosion-proof standards. Cable entry points are fitted with flame-retardant sealing rings to eliminate ignition paths through cable gaps.

Industry Applications

The YBBP high-voltage explosion-proof frequency motor is used in environments where flammable gases, dust, or vapors are present alongside high-power variable speed drive systems. It handles IIB class explosive gases including methane, propane, and ethanol.

Typical driven equipment:

· Compressors — Oil refineries, natural gas processing, chemical plants

· Water pumps — Municipal water treatment, offshore platforms, desalination

· Crushers — Mining, quarrying, mineral processing

· Conveyor and transportation machinery — Coal handling, bulk materials handling

· Heavy cutting machine tools — Large-scale manufacturing facilities

Customization Options

Standard catalog specifications may not fit every installation. XCMOTOR can accommodate:

· Voltage configuration — Any level within the 3000 V–11000 V range

· Bearing selection — SKF, NSK, or FAG, chosen based on load conditions and maintenance requirements

· Dimensional adjustments — Shaft height, mounting form, and connection dimensions modified to fit your installation

· Shipping arrangements — Sea freight, air freight, road transport, or multimodal shipping based on destination and project schedule

All customization requests are reviewed by the technical team before order confirmation to verify that the final configuration matches actual site conditions.

Certifications

Certifications held by products supplied through XCMOTOR:

· CCC & CE

· ISO9001:2000 International Quality System

· CRCC (Ministry of Railways)

· CQC Quality Management System

· UL & GOST

· China Energy Saving Production Certification

· ZDHY Environmental Management System Certification

The insulation system is tested to a breakdown voltage of ≥30 kV. Overvoltage protection circuits are verified under simulated grid fluctuation conditions of ±10% before shipment.

Why Work With XCMOTOR?

· Over 20 years of industrial power equipment supply experience

· Partnerships with 30+ manufacturers including ABB, Siemens, Wolong, XEMC, SIMO, and NEC

· SAP factory management system for order accuracy and traceability

· Support available Monday through Sunday

· Customized transport solutions for international buyers

FAQ

Q: What is the explosion-proof rating of the YBBP motor?

A: The YBBP uses a flameproof (Ex d) enclosure. The explosion-proof joint surface width is ≥15 mm with a gap of ≤0.15 mm, containing internal ignition and preventing flame propagation to the surrounding atmosphere.

Q: Can this motor work directly with a variable frequency drive?

A: Yes. Stator windings are treated with VPI technology and rated to a breakdown voltage of ≥30 kV, providing protection against the harmonic voltages and transient overvoltages produced by VFD systems.

Q: What voltage levels are available?

A: The motor is available in 3000 V, 3300 V, 6000 V, 6600 V, 10000 V, and 11000 V, each with ±5% tolerance, covering the most common high-voltage grid standards used in industrial facilities.

Q: Which industries use this motor?

A: Chemical plants, oil and gas processing, mining, power generation, water treatment, and heavy manufacturing — wherever explosion protection and variable speed operation are both required.

Q: Can I specify a bearing brand?

A: Yes. SKF, NSK, and FAG are all available. You can specify the bearing brand when placing your order based on your site maintenance requirements.

Q: What are the lead time and shipping options?

A: Lead times depend on the specific configuration. XCMOTOR arranges shipping solutions including sea, air, road, and multimodal freight based on your destination and project schedule.

Contact Us

Send your YBBP high-voltage explosion-proof frequency motor power, voltage, and site requirements to xcmotors@163.com. The team reviews technical inquiries and responds to sourcing questions from buyers worldwide.