This series of motors complies with GB755-2008 "Rotating Electrical Machines - Ratings and Performance." Explosion-proof markings include EX D I MB, EX D IIB T4 GB, and EX D IIC T4 GB. The above series are suitable for locations with explosive gas mixtures; EX D IIB T4 GB is applicable for industrial use in Class IIA and IIB environments. EX D IIC T4 GB is suitable for industrial use in Class II, Groups A, B, and C. They are designed for environments containing explosive gas mixtures of temperature classes T1, T2, T3, and T4.
Core Features
The explosion-proof variable frequency motor adopts a high-strength cast iron one-piece construction. It's paired with a labyrinth seal structure. This design effectively blocks internal explosion flames from escaping to the outside. It complies with the Ex d IIB T4/T6 explosion-proof rating. Even in the event of internal sparks caused by malfunctions, they won't ignite external flammable and explosive media such as methane, hydrogen, and coal dust. The enclosure is also subjected to pressure impact testing, demonstrating superior resistance to impact and deformation. It maintains strong durability in severe settings such as coal mines and chemical plants.
Variable frequency drives offer flexible speed regulation, energy efficiency, and load adaptability. They support a broad speed regulation range. For example, chemical pumps that require flow control or coal mine conveyors in need of speed adjustments can accomplish this directly through the VFD.No additional speed control devices are needed. Compared to conventional fixed-speed motors regulated by valves or dampers, energy consumption is cut by 15%-30%.
Stator windings adopt vacuum pressure impregnation (VPI) technology. This forms a dense, corona-resistant insulation layer. The layer can withstand high-order harmonic impacts from variable frequency drives. It effectively prevents winding aging and breakdown. The rotor uses high-strength laminated silicon steel sheets. Its balance accuracy meets G2.5 grade. In variable-frequency operation, it features minimal vibration and low noise (≤75dB), preventing shaft wobble or abnormal sounds caused by speed fluctuations. It ensures continuous equipment operation.
Structurally durable with hassle-free maintenance: Internal motor components are selected for wear resistance and corrosion resistance, enabling high-speed or low-speed operation under variable frequency conditions with a service life exceeding 20,000 hours. Explosion-proof joint surfaces undergo rust-proof treatment. Daily maintenance only entails dust removal and seal inspection,there's no need to dismantle the explosion-proof structure.These tasks can be performed by regular electricians, minimizing operational hazards in dangerous environments.
Scope of ApplicationThis explosion proof variable frequency motor has dual advantages: explosion-proof performance and variable frequency function. It's mainly used in industrial settings containing flammable and explosive substances. The specific application scenarios are listed below:
| Coal Mining Industry |
For coal mines with methane gas, the motor is used on scraper conveyors, belt conveyors, underground drainage pumps, and ventilation fans. Variable frequency regulation adjusts to shifts in coal transport volume, avoiding energy waste from excessively large equipment. |
| Petrochemical Industry | The motor's explosion-proof design reduces explosion risks in petrochemical settings. It's applied to oil refinery transfer pumps, chemical workshop centrifugal compressors (handling flammable and explosive gases like hydrogen and ethylene), and reactor agitator motors (where combustible solvent vapors may leak). VFDs facilitate exact regulation of process parameters such as flow rate and agitation speed. |
| Natural Gas and Gas Industry | The motor is deployed for booster pumps in natural gas processing plants and pressurization fans in urban gas transmission and distribution pipelines. Variable frequency control adjusts operating speed according to pipeline network pressure, ensuring stable gas supply pressure.Its explosion-proof design effectively prevents safety risks arising from gas leakage. |
| Pharmaceutical and Coatings Industries | For solvent transfer pumps in pharmaceutical plants (using flammable solvents like ethanol and acetone) and mixing motors in coatings plants (where paint thinners readily evaporate into combustible vapors), the combination of explosion-proof + variable frequency drives meets safety requirements while accommodating the speed demands of diverse processes. |
Operating environment
| Temperature Conditions | Ambient temperature -15°C to 40°C (exceeding 45°C customization) |
| Altitude Restrictions | Not exceeding 1000m; higher altitudes require prior specification; |
| Power Requirements | 380V (or customization) |
| Frequency | 50Hz/60Hz |
| Power Requirements | Voltage fluctuations of ±5% and frequency fluctuations of ±2% are permitted. |
| Operating Conditions | Non-corrosive gas environments with no severe vibration |
| Explosive Hazardous Environment Requirements: |
Applicable to Class II explosive gas environments (e.g., methane, ethane, hydrogen) or combustible dust environments (e.g., coal dust, flour dust). The explosion-proof rating must match the ignition temperature of the medium. Prohibited for use in environments with highly corrosive gases (e.g., chlorine, hydrogen sulfide) to prevent corrosion of the explosion-proof enclosure and seals. |
Model Description
Taking the YBBP-200L1-6 as an example,explain the model designation of the explosion proof variable frequency motor.
| YBBP | Motor Series |
| 200 | Frame |
| l | Frame length designation |
| 1 | Core length designation |
| 6 | Poles |
Order Instructions
Please indicate the following information when placing your order:
| Motor model: YBBP-200L1-6 | ||
| 1 | Rated Voltage | 480V |
| 2 | Rated frequency | 50Hz |
| 3 | Poles | 6 |
| 4 | Rated power | 18.5kw |
| 5 | Protection level | IP55 |
| 6 | Installation type | IMB3 |
| 7 | Rotation direction | Clockwise direction (viewed from the extension end of the motor shaft) |
| 8 | Outlet box location | at the top of the motor (customization) |
| 9 | Explosion-proof rating | EX D IIB T4 GB |
| Note: If you need specific parameters for the explosion-proof variable frequency motor (e.g., frequency, voltage, ambient temperature, altitude), please state them explicitly when placing your order. In case the data sheet you require isn't available, feel free to ask about and request a customized version. | ||
Catalogue
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