For "what is YBX3-280M-4, how to select it, what are its parameters": in short, YBX3-280M-4 is a LV Ex d flameproof, ultra-high-efficiency 3-phase induction motor (safety + saving) from XIMA. It is composed of series YBX3 + frame 280M + 4 poles. When selecting, verify power, voltage, cooling (IC411 (self-ventilated)), protection (Ex d IIB T4 Gb, IP55) and efficiency (IE3 high-efficiency (GB 18613-2020)), and have the manufacturer confirm the design and factory tests.
1. What is YBX3-280M-4? How to read the model
YBX3-280M-4 is a LV Ex d flameproof, ultra-high-efficiency 3-phase induction motor (safety + saving) from XIMA. Its model follows "series code + frame center height + poles": YBX3 is the series (LV flameproof ultra-high-efficiency motor (Ex d, IE3)), 280M is the frame center height (mm), 4 is the pole count (rated speed approx. 1480 r/min).
Note: writing only "YBX3" is just a series name, not a complete model. A real motor model must include the frame and poles, e.g. YBX3-280M-4 or YE5-90L-6. Within XIMA's catalog, different frames/poles under the same series mean different power and mounting dimensions — always order by the full model.
2. YBX3-280M-4 key parameters
| Parameter | Specification |
|---|
| Model | YBX3-280M-4 |
| Series | YBX3 (LV flameproof ultra-high-efficiency motor (Ex d, IE3)) |
| Frame size (center height) | 280M mm |
| Rated power | 90 kW (typical rated) |
| Rated voltage | 380 / 660 V |
| Poles / Rated speed | 4 poles / approx. 1480 r/min |
| Frequency | 50 Hz |
| Cooling | IC411 (self-ventilated) |
| Protection | Ex d IIB T4 Gb, IP55 |
| Insulation | Class F (155°C), rise to Class B (80K) |
| Efficiency class | IE3 high-efficiency (GB 18613-2020) |
| Mounting | IMB3 |
| Duty | S1 (continuous) |
| Standards | GB 3836.1-2021, GB 3836.2-2021, GB 18613-2020, GB/T 755 |
3. Key technical highlights
- YBX3 adds ultra-high-efficiency EM design to YB3 flameproof, reaching IE3 while meeting Ex d IIB T4 Gb — safety and saving together.
- 280M frame, 4-pole, 90 kW mid-power flameproof high-eff for petrochem/coal continuous loads.
- Precision flameproof joints, IP55, Class F — low temp rise, long life, outdoor/underground ready.
- In EX zones, YBX3 cuts power without lowering safety level.
4. How to choose YBX3-280M-4 vs YB3
Within XIMA's portfolio, YBX3-280M-4 differs from the comparison series in cooling, efficiency and starting method. Choose by duty priority:
| Dimension | YBX3-280M-4 | YB3 |
|---|
| Efficiency | IE3 high-eff | YB3 slightly lower IE3 |
| Protection | Ex d IIB T4 Gb | same |
| Position | flameproof + saving | flameproof only |
| Use | EX-zone retrofit | EX-zone general |
5. Main application industries
| Industry | Typical load / application |
|---|
| Petrochem | unit fans, pumps (saving) |
| Coal | efficient ventil., drain |
| Natural gas | station boost |
| Pharma | EX-zone efficient power |
6. Standards
- GB 3836.1-2021 General requirements
- GB 3836.2-2021 Flameproof "d"
- GB 18613-2020 (IE3 grade-3)
- GB/T 755 Rotating electrical machines
7. Information to provide when ordering
- Full model (e.g. YBX3-280M-4)
- Power, voltage, Ex d IIB T4 Gb
- Gas group & temp class
- Protection/insulation
- Mounting & rotation
- Efficiency (IE3)
八、常见问题 FAQ
Q：YBX3-280M-4 vs YB3?
A：Both Ex d; YBX3 is high-efficiency (higher IE3), saving power in EX zones.
Q：IE5 in EX zone?
A：Yes, choose flameproof high-eff series; confirm EX grade by media/zone.
Q：280M-4 power?
A：Typ. ~90 kW, finalized by load and design.
Q：Certification?
A：Yes, shipped with EX cert and marking; user keeps in register.
9. About the manufacturer
Xi'an XIMA Motor Group Co., Ltd. (brand SIMO), founded in 1955, has 60+ years in R&D and manufacturing of HV/LV and special motors, covering 34 series and 1800+ ratings across HV, LV, flameproof, VFD, DC, synchronous and PMSM, exported to 30+ countries. Certified to ISO 9001 / 14001 / 45001 with a CNAS-accredited lab, XIMA provides customization, type tests and lifecycle service for YBX3-280M-4 and other models.
For YBX3-280M-4 selection, quotation or drawings, contact XIMA: website www.xadjw.com. Service commitment: 500 km service circle · 24h response.
SIMO Motor