Ybx3 Series High Efficiency Flameproof Three-Phase Asynchronous Motor (Exd IIB T4 GB)
| Item | Details |
|---|---|
| Model No. | YBX3-90L-2, 2.2kW |
| Phase | Three-phase |
| Type | Explosion-proof three-phase motor |
| Rotor Type | Squirrel cage |
| Enclosure Form | Totally enclosed |
| Pole Range | 2 – 30 poles |
| Starting Method | Direct-on-line (DOL) starting |
| Certifications | ISO9001, CCC, EAC |
| Brand | Changli |
| Rated Voltage | 380V |
| Rated Current | 3.2A |
| Mounting Type | IM B3 |
| Power Range | 0.12 ~ 630 kW |
| Rated Frequency | 50 Hz / 60 Hz |
| Frame Size | H63 mm – H400 mm |
| Shipping Package | Seaworthy wooden case |
| Trademark | CHANGLI |
| Place of Origin | China |
| HS Code | 8501510090 |
| Annual Output Capacity | 550,000 units |
Product Description
The design of low voltage high-efficiency IE3 three-phase asynchronous motor (explosion proof YBX3) complies with domestic and international standards, and the efficiency complies with Class 3 in the national standard GB18613-2020. Explosion proof products have obtained domestic explosion-proof certification, energy efficiency certification, CCC certification, international IECEx certification, ATEX certification, CUTR certification, etc., and have strong domestic and international competitiveness.
| Parameter | Specification |
|---|---|
| Explosion-Proof Certifications | |
| Domestic Explosion-Proof Ratings | Ex d I Mb, Ex d IIB T4 Gb, Ex d IIC T4 Gb, or non-explosion-proof |
| European Explosion-Proof Certifications | IECEx Explosion-Proof Certification, ATEX Explosion-Proof Certification |
| Core Technical Specifications | |
| Frame Size Range | H63 mm – H400 mm |
| Power Range | 0.12 kW – 630 kW |
| Number of Poles | 2 – 30 poles |
| Rated Voltage | 220 V – 1140 V |
| Rated Frequency | 50 Hz / 60 Hz |
| Energy Efficiency Level | IE3 |
| Protection & Cooling | |
| Ingress Protection Grade | IP55, IP56, IP65, IP66 |
| Cooling Methods | IC410, IC411 |
| Mounting Arrangements | IM B3, IM B35, IM B5, IM V1, and other optional configurations |
The YBX3 series low-voltage IE3 high-efficiency explosion-proof three-phase asynchronous motor is an independently upgraded high-performance motor developed by Changli Electric. It features an aesthetic streamlined structure, ultra-low energy loss, low noise, low vibration, high operational safety, outstanding reliability, and easy maintenance.
Widely used in petroleum, natural gas, chemical processing, metallurgy, and power generation industries.
Designed for hazardous locations with explosive gas atmospheres in China and European regions, including petrochemical plants, oil & gas fields, metallurgical sites, power facilities, and underground coal mines. It reliably drives fans, water pumps, compressors, centrifuges, mixers, conveying equipment and other general industrial machinery.
Frame

Winding 

In-process Inspection & Quality Control
All testing and measuring instruments are fully calibrated annually to ensure accurate and consistent inspection results. Every production procedure undergoes strict item-by-item quality inspection and control.
| Component | Inspection Items |
|---|---|
| Coil | 1. Raw material physical and chemical testing2. Winding process inspection3. Winding dimension verification |
| Iron Core | 1. Silicon steel sheet material physical and chemical inspection2. Lamination burr and paint film inspection3. Laminated core dimensional check |
| Frame | 1. Welding quality conformity verification2. Finishing machining precision inspection |
| Rotor | 1. Rotor core lamination quality check2. Conducting bar welding inspection3. Material, appearance, conductivity and dimension check of bar end rings4. Slot conducting bar fastening inspection5. Core outer diameter and overall dimension check6. Dynamic balance calibration |
| Shaft | 1. Raw material quality and annealing process inspection2. Finish machining precision check |
| Stator | 1. Core compactness inspection2. Core overall length and sectional dimension check3. Winding insertion quality inspection4. Iron loss performance testing |
| Assembly | 1. Plain bearing dimension and surface quality check2. Air gap size, stator & rotor axial alignment, internal fan and windshield gap inspection3. Internal cleaning inspection4. Shaft center height and mounting dimension verification |
| Final Test | 1. Routine factory testing2. Type testing |
Every motor undergoes complete testing before delivery. Only units that pass all inspection criteria are qualified for shipment, with an individual test report provided for each motor.
| Test Category | Test Items |
|---|---|
| Routine Tests | 1. Three2. Winding insulation resistance3. Winding high-voltage withstand4. No5.67. Three-phase no-load8. Locked-rotor9. Lock10. Maximum torque11. Rot12. Vibration test (horizontal / vertical / axial)13. Noise test |
| Type Tests | 1.3. Stator winding4. Rot58. Full-load slip9. St10. Bearing operating temperature11. W12. Overload1314. Operating efficiency |
Paintings
Standard painting thickness: 120microns (40 micron priming paint + 80micron finish paint)
With professional certified painters, we can mix and paint any color according to your requirements.
All motors are packed with standard export seaworthy packaging, adopting plywood boxes or fumigated wooden cases. The packaging is specially reinforced to adapt to long-distance ocean transportation, ensuring safe and damage-free delivery.
We provide a standard warranty of 12 months after equipment commissioning or 18 months after delivery, whichever occurs first. Extended warranty services are available upon customer request. Please contact our sales team for detailed terms.
YB Series High-Efficiency High-Voltage Explosion-Proof Three-Phase Asynchronous Motor
High efficient explosion-proof motors
Changli’s rib-cooled explosion-proof motors are engineered for maximum performance in demanding industrial environments that call for robust, reliable and safely rated motor solutions. Setting a new benchmark in high-voltage rib-cooled motor design, they deliver an industry-leading power-to-weight ratio with higher power output per unit mass. Featuring flexible configuration and easy servicing, these motors are ideally suited for continuous, efficient operation in hazardous classified locations.
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