OEM WOLONG YFBKK Dust-proof HV Motor Supplier, Exporters

One of Wolong Nanyang’s main Ex motor series are dust-proof type under box design three-phase asynchronous motors. YFBKK series is dust proof type Ex motors used in hazardous areas driving compressor, pump which request of higher protection grade.

Product Description

The YFBKK series high pressure box type dust explosion-proof mill with three-phase asynchronous motor integrates the advanced design concepts of high pressure box type asynchronous motors and specialized mill motors, incorporating extensive field operation experience. Developed using reliable new technologies, materials, and processes, it features a novel design, compact structure, aesthetic appearance, high starting performance, low noise, low vibration, high protection level, and safe, reliable operation.

Application Fields

The YFBKK MV motor adopts a box-type configuration designed for dust explosion protection. Conforming strictly to IEC standards, this dustproof MV Ex electromotor is engineered to drive mechanical equipment to break and grind coal into powder. It serves as a vital prime mover widely used in cement, silicate products, new building materials, refractories, fertilizers, black and non-ferrous metal processing, glass ceramics, and other production industries for the dry or wet grinding of various ores and grindable materials.
Additionally, this dust explosion motor is highly suitable for industries such as medicine, textile (including cotton fiber, flax fiber, and chemical fiber), metallurgy (such as magnesium powder, aluminum powder, and toner), grain processing (wheat, corn, and grain), feed processing (blood meal and fish meal), fertilizer, tobacco, paper, synthetic materials (plastics, dyes), and other locations where combustible dust hazard exists.

Model Description

YFBKK 500-6
  • Y Three-phase asynchronous motor
  • FB Dust proof type
  • KK Air-to-air cooling
  • 6 Poles

Implementation Standards

GB 755 rotary motor rating and performance
Ex tD A21 IP65 T130℃
GB/T 997 structure type, installation type and junction box position (IM code)
GB/T 1032 three-phase asynchronous motor test method
GB/T 1993 Rotating motor cooling method
GB 1971 rotating motor line end mark and rotation direction
GB/T 4772 rotary motor dimensions and output power class
GB/T 4942.1 Shell protection class (IP code) classification
GB 10068 Measurement and limits of mechanical vibration (center height ≥ 56mm)
GB/T 10069.1 Rotating motor noise determination methods and limits - Part 1
GB 10069.3 Rotating motor noise determination methods and limits - Part 3: Limits
Explosive atmospheres - Part 1: general requirements for equipment
Electrical equipment for use in combustible dust environments - Part 1: General requirements
Electrical equipment for use in combustible dust environments - Part 5: Enclosure protected "TDS"
GB 30254 high voltage three-phase cage asynchronous motor energy efficiency limits
GB 50058 Design of electrical installations in explosive and fire hazard environments

Basic Features

Frame Size H450 ~ 630
Rated Power 315kW ~ 2240kW
Rated Voltage 6000V ~ 10000V
Frequency 50Hz, 60Hz
Poles 6P ~ 8P
Thermal Classification 155(F)
Temperature Rise Limit 80K (Class B)
Vibration Speed 2.3 mm/s
Energy Efficiency Level 3 (GB30254)
Cooling Method IC611
Installation Method IMB3 (Optional IMB35, IMV1)
Protection Level IP65 / IP55
Operation Mode S1 Continuous Duty
Explosion-proof Level Ex tD A21 IP65 T130℃ / Ex tD A22 (IP65/IP55)
Ambient Temperature & Altitude -20℃ ~ +40℃, ≤ 1000m
Environment Options W, WF1, WF2, F1, F2, TH, TA, THW, TAW

Installation Method Reference

YFBKK Installation Method Blueprint

Frequently Asked Questions (FAQ)

Q What are the main applications of the YFBKK series high-pressure dust explosion-proof motor?
The YFBKK series motor is primarily used to drive mechanical equipment for breaking and grinding coal into powder. It is widely applied in industries like cement, silicate, refractories, fertilizers, metallurgy, grain, feed, paper, and environments featuring combustible dust hazards.
Q What cooling method and installation options are supported?
The motor utilizes the IC611 air-to-air cooling method (indicated by "KK" in the model name). The default installation configuration is IMB3, but it can also be customized for IMB35 and IMV1 setups.
Q What are the voltage and power capacity ranges of this motor series?
The YFBKK series operates within a rated voltage range of 6000V to 10000V and delivers a rated power capacity ranging from 315kW up to 2240kW, suitable for heavy-duty industrial applications.
Q How does the YFBKK series handle dust explosion-proof environments?
It features multiple explosion-proof ratings, including Ex tD A21 IP65 T130℃ and Ex tD A22 IP65/IP55 T130℃, providing robust protection in atmospheres with conductive and non-conductive combustible dust.
Q Does the YFBKK series meet modern energy efficiency standards?
Yes, the motor achieves Level 3 energy efficiency in strict accordance with the GB 30254 standard for high-voltage three-phase cage asynchronous motors.
Q Can this motor be installed in corrosive or outdoor environments?
Yes, while the standard configuration is for indoor environments, optional versions are available for outdoor use (W), medium corrosion resistance (WF1/F1), strong corrosion resistance (WF2/F2), and specific tropical or humid climates (TH, TA, THW, TAW).

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