YBBP355L1-4 280 kW 380V Rated Current 497A Manufacturer

YBBP355L1-4 is a high-performance Flameproof VFD Motor built by Xi'an XIMA Electric (Group) Co., Ltd., rated 280 kW, voltage 380V, rated current approx. 497.0 A, protection Ex d ⅡB T4 Gb, efficiency IE3 / IE4（GB 30254-2024）. Based on real sample data, this guide covers model meaning, specifications, selection and FAQ.

1. What YBBP355L1-4 means: series ≠ model

Many buyers treat “YBBP” as a full model — a common mistake. The series code is only a product family; a complete motor model must include the frame size and pole/spec code. For YBBP355L1-4:

• YBBP — series code, Flameproof VFD Motor;
• 355 — frame size (center height in mm);
• poles / spec — corresponds to synchronous speed 1500 r/min.

Only YBBP355L1-4 is the unique, orderable model; “YBBP” alone cannot pin down the spec.

2. Key specifications (real sample)

Note: above are library sample parameters; final values per XIMA datasheet and order confirmation.

3. Technical features

• Matched to VFD duty across constant-torque and constant-power ranges.
• Forced cooling (IC416) keeps reliable heat dissipation at low speed / high torque.
• Reinforced insulation withstands dv/dt and partial discharge from drives.
• Infinitely variable speed saves energy in fan/pump closed-loop control.
• Optional encoder, overspeed switch and brake for hoisting / winding.

4. Adjacent frame selection

5. Typical industries

6. Standards

• GB 3836.1 / GB 3836.2
• GB/T 21209

7. Ordering notes

• State full model, power, voltage, speed/poles, mounting (IMB3/B5/V1) and protection/Ex level.
• Specify environment (temp, altitude, humidity, medium) and starting method (DOL/VFD/soft-start).
• Request special shaft, dual shaft, tachogenerator, encoder or brake at order time.
• Confirm cooling (IC411/IC416/IC611/IC81W) and matching cooler / inverter brand.
• Allow 10–15% power margin; confirm lead time, warranty and site commissioning scope.

8. FAQ

Q: What is the difference between “YBBP” and YBBP355L1-4?

A: “YBBP” is only the Flameproof VFD Motor family code; YBBP355L1-4 adds frame and spec code and is the orderable model.

Q: What are the rated power and current of YBBP355L1-4?

A: Sample rated power approx. 280 kW, voltage 380V, rated current approx. 497.0 A; final per datasheet and order confirmation.

Q: Is frame 355 large? Any mounting notes?

A: 355 mm is a medium-large frame; bolt pattern per IMB3, foundation must be leveled, on-site guidance recommended.

Q: What is the protection / Ex level?

A: Protection Ex d ⅡB T4 Gb; for hazardous areas confirm the Ex mark and gas group.

Q: Why does efficiency IE3 / IE4（GB 30254-2024） matter?

A: Higher efficiency cuts running cost and heat, ideal for continuous duty with short payback.

Q: How is YBBP355L1-4 cooled?

A: Cooling IC416; keep cooling medium/air path clear under full load.

Q: Can it be customized?

A: Yes — voltage, speed, shaft, mounting, sensors and coating; state requirements at order.

Q: Where to get quote and datasheet for YBBP355L1-4?

A: Visit www.xadjw.com or contact Xi’an XIMA sales engineers for selection and quote.

9. About the manufacturer

YBBP355L1-4 is designed and built by Xi'an XIMA Electric (Group) Co., Ltd. (founded 1955), covering HV, LV, flameproof, VFD, DC and PM motors, shipped to 30+ countries. For datasheet, quote or customization of YBBP355L1-4, visit www.xadjw.com or contact a sales engineer.