YB3 series motors are fully enclosed, self-fan-cooled, squirrel-cage ultra-high-efficiency flameproof three-phase asynchronous motors independently developed by our company. The highest energy efficiency grade is grade 1, and it has the characteristics of excellent performance, safe and reliable use, lower vibration and noise than similar products, and meets environmental protection requirements. This product is at the leading domestic and international advanced level.
YB3 series flameproof three-phase asynchronous motors, the explosion-proof performance complies with GB3836.2 "Explosive Atmospheres Part 2: Equipment Protected by Flameproof Enclosure "d"", suitable for places where explosive gas mixtures exist, and Zone 1 with explosive atmospheres , Zone 2 hazardous area. Explosion proof mark: Ex d I Mb, Ex d IIB T4 Gb, can also be made into Ex d IIC T4Gb. It can be used in different industries such as petrochemical industry, coal mine, mining, port, power plant, machinery industry, etc. to drive various general machinery, such as fans, compressors, water pumps, crushers, hoists, centrifuges, cutting machine tools, transportation machinery , is the ideal power equipment.
GB 755 Rotating Electric Machines Rating and Performance
GB/T 997 Classification of structure type, installation type and junction box position of rotating electrical machines (IM code)
GB/T 1032 Three-phase asynchronous motor test method
GB/T 1993 cooling method for rotating electrical machines
GB 1971 Rotating electrical machines - Wire end marking and direction of rotation
GB/T 4772 Size and output power level of rotating electrical machines
GB/T 4942.1 Enclosure protection class (IP code) classification of the overall structure of rotating electrical machines
GB 10068 Mechanical vibration of motors with a center height of 56mm and above - Measurement and limit of vibration
GB/T 10069.1-2006 Noise Determination Methods and Limits of Rotating Electric Machines Part 1: Determination Methods of Rotating Electric Machine Noise
GB/T 10069.3-2008 Noise Determination Methods and Limits of Rotating Electric Machines Part 3: Noise Limits
GB 14711 Safety requirements for small and medium rotating electrical machines
GB 3836.1 Explosive Atmospheres Part 1: Equipment General Requirements
GB 3836.2 Explosive Atmospheres Part 2: Equipment Protected by Flameproof Enclosure "d"
GB 3836.3 Explosive Atmospheres Part 3: Equipment Protected by Increased Safety "e"
GB 50058 Code for design of electrical installations in explosion and fire hazardous environments
The explosion-proof structure of YBK3 explosion-proof motor is ExdI Mb.
The main body shell protection grade of YBK3 explosion-proof motor is IP55
The cooling method of YBK3 explosion-proof motor is IC410, IC411
The insulation grade of YBK3 explosion-proof motor is F grade, the temperature rise margin of the stator winding is large, and the service life is long.
The YBK3 explosion-proof motor has a cylindrical shaft extension, which is driven by a coupling or spur gear.
The rotor of YBK3 explosion-proof motor adopts cast aluminum structure. The rotor is tested by dynamic balance, and the YBK3 explosion-proof motor runs smoothly, with low vibration and low noise.
YBK3 explosion-proof motor is fixed, and the rotor punching piece adopts high-quality electrical silicon steel sheet with high magnetic permeability and low loss. YBK3 explosion-proof motor has low loss and high efficiency.
The stator winding of YBK3 explosion-proof motor is made of high-strength polyester enameled round copper wire, and is treated by VPI vacuum pressure dipping to become a complete whole. The winding insulation has good electrical, mechanical, moisture-proof performance and thermal stability.
YBK3 explosion-proof motor bearings are specially designed for low-vibration and low-noise bearings for YBK3 explosion-proof motors. Only double-sided sealed bearings are available for frame sizes below 132. A wave spring washer is installed at the shaft extension end to moderately press against the bearing and effectively inhibit the operation of the YBK3 explosion-proof motor. vibration and noise generated. The frame size above 160 adopts the inner and outer cover structure, and the retaining ring is axially fixed at the bearing part, which effectively prevents the axial movement of the rotor of the YBK3 explosion-proof motor.
YBK3 explosion-proof motor fan, the material of the hood. YBK3 explosion-proof motor adopts anti-static plastic fan, which has small moment of inertia and low loss. The air hood is a steel plate structure, which can obtain the largest area of ventilation under the premise of preventing the intrusion of foreign objects of a certain size, so that the air path is smooth.
YBK3 explosion-proof motor has the following three basic structure types: B3 has a base and no direct connection mounting flange, B5 has no base and has a direct connection mounting flange, and B35 has a base and a direct connection mounting flange.
Basic Features:
Frame size: 63～400.
Rated power range: 0.12～630KW
Number of poles: 2 to 16 poles
Rated voltage: 380, 660, 380/660, 400, 690, 400/690V, 415, 720, 415/720V, 440V, 460V. (Note: 380V for basic series voltage of 3kW and below is Y connection, and 380V for voltage above 3kW is △ connection; it can also be manufactured according to special voltage)
Rated frequency: 50Hz or 60Hz
Insulation class: 155 (F)
Efficiency: Class 2. Comply with GB18613-2012 "Minimum and medium-sized three-phase asynchronous motor energy efficiency limit value and energy efficiency grade" energy efficiency level 2.
Cooling method: Frame size 63～71 Cooling method: IC410 Frame size 80-400 Cooling method: IC411
Installation method: IMB3 (other installation methods can also be manufactured).
Protection class: IP55, can also be specially manufactured as IP56, IP65, IP66
Operation mode: S1
Explosion-proof mark: Ex d IIB T4 Gb, Ex d IIC T4 Gb.
Standard configuration: Indoor. Optional configuration: outdoor (W), outdoor moderate corrosion (WF1), outdoor strong corrosion (WF2), indoor moderate corrosion (F1), indoor strong corrosion (F2), wet tropical (TH), dry Tropical (TA), Outdoor Wet Tropical (THW), Outdoor Dry Tropical (TAW).
Main junction box:
Frame size 63-355 The main terminal box is located at the top of the motor (viewed from the motor shaft extension), and the cable outlet can be adjusted in four directions.
However, when the outlet of the junction box with a center height of 160 and above faces backward (towards the non-shaft extension end), due to the influence of the lifting ring, it is necessary to lift the motor in place at the installation site, remove the lifting ring, open the cover of the junction box, and release the junction box. Connect the bolts with the base, and adjust the outlet of the junction box to the rear.
Frame size 400 The main junction box is located on the upper right side facing down (viewed from the motor shaft extension). The standard configuration of the junction box cable entry: bell mouth entry.
Optional configuration: threaded steel pipe wiring or explosion-proof glan head entry.
Ambient conditions: Ambient air temperature: -15～+40℃. Special ambient temperature: -40～+60℃. Altitude: no more than 1000m.
YFB4 series dust explosion-proof three-phase asynchronous motors are fully enclosed self-fan cooled squirrel-cage three-phase asynchronous motors. With small size, light weight,
It has the characteristics of reliable operation, beautiful appearance, high efficiency, low noise, small vibration, large temperature rise margin, excellent performance, and explosion-proof junction.
It has the advantages of advanced, reasonable, safe and reliable use.
YBK3 explosion-proof motor is used for coal mine (below the mining face), and the explosion-proof structure of the motor is ExdI Mb. The explosion-proof mark is ExdI Mb, which is suitable for underground coal mining working faces containing gas or coal dust. This series of motors is a squirrel-cage flameproof three-phase asynchronous motor, the enclosure protection grade is IP55, and the cooling method is IC411 fully enclosed self-fan cooling. The structure and installation type of the motor are IMB3, IMB5, and IMB35. YBK3 explosion-proof motor is a special motor designed for mining face machinery in coal mines. The machine base is formed by welding steel plates. The hood, junction box and insulation structure are strengthened. It is mainly used in the harsh working environment of coal mines.
YBK3 flameproof motor requires that when the explosive mixture inside the motor explodes, the flameproof casing should not be damaged or deformed to affect the flameproof performance; the internal explosion flame is not allowed to cause the explosion of the external explosive mixture through the flameproof joint surface of the casing. this:
1. The parts that make up the flameproof enclosure, such as machine base, end cover, bearing inner cover, junction box cover, junction box seat, etc., must pass 1.5Mpa after finishing, and the duration should be at least 10S. Permanent deformation or damage that affects the explosion-proof type shall be regarded as passing the static pressure test;
2. See the length gap, surface roughness of the flameproof joint surface, the electrical clearance and creepage distance between the exposed conductors inside the junction box, between the exposed conductors and the metal shell.
3. The bolts connecting the flameproof casing are equipped with spring washers to prevent self-loosening, and the adaptability of the fasteners is greater than or equal to 640Mpa, that is, the mechanical performance level of the fastening bolts is 8.8. For mining products, retaining rings should also be provided for fasteners that are easily impacted by external forces.
4. Machine base, end cover, bearing inner cover, junction box seat, junction box cover, terminal bolt, terminal sleeve (or terminal board), shaft, and sealing ring are explosion-proof parts.
5. Under the rated working condition, the maximum surface temperature of the motor casing shall not exceed +150℃. The temperature outside the cable inlet should not be higher than the allowable temperature of the cable used to ensure reliable operation of the cable.
use:
Dust explosion-proof motors are mainly used in medicine, textile (such as cotton fiber, flax fiber, chemical fiber, etc.), metallurgy (magnesium powder, aluminum powder,
Toner, etc.), grain processing (such as wheat, corn, grain, etc.), feed processing (blood meal, fish meal), fertilizer, tobacco, paper, synthetic
Places where combustible dust exists in synthetic materials (such as plastics, dyes), building materials, etc.
YBC series flameproof three-phase asynchronous motor for cutting section of shearer (hereinafter referred to as motor) Electric motor for shearer crushing mechanism. This series of motors has a series of advantages such as high efficiency, high stall torque, high reliability, low stall current, strong overload capacity, beautiful appearance, and convenient use and maintenance.
YBX3 series high-voltage explosion-proof three-phase asynchronous motor adopts the design and manufacturing concept of today's international high-voltage high-efficiency medium-sized motor, combines the company's long-term production technology and experience in high-voltage explosion-proof motors, and adopts proven and reliable new technologies, new materials and new processes. development. The products are well-made, excellent in performance and reliable in operation.
Frame No.: 355～560
Power range: 185kW～2240kW
Voltage: 3000V～11000V
Frequency: 50Hz, 60Hz
Number of poles: 2P～12P
Heat Rating: 155(F)
Temperature rise limit: 80K (Class B), 105K (Class F) (Maximum first power for each frame number and each pole number)
Vibration speed: 2.3mm/s
Efficiency: Class 1 energy efficiency. Comply with GB30254-2013 "Energy Efficiency Limits and Energy Efficiency Grades of High-Voltage Three-Phase Cage Induction Motors" Energy Efficiency Level 1.
Cooling method: IC411
Installation method: IMB3 (also can be made into IMB35, IMV1)
Protection class: IP55
Operation mode: S1
Explosion-proof level: ExdⅠMb, Exd IIB T4 Gb Exd IIC T4 Gb
Environment: temperature -20℃～+40℃, altitude not higher than 1000m
Indoor (standard configuration)
Optional: outdoor (W), outdoor moderate corrosion protection (WF1), outdoor strong corrosion protection (WF2), indoor moderate corrosion protection (F1), indoor strong corrosion protection (F2), wet tropical zone (TH), dry Tropical (TA), Outdoor Wet Tropical (THW), Outdoor Dry Tropical (TAW).
The meaning of YBK3 motor explosion-proof mark: ExdIMb
Ex: explosion-proof mark
d: Explosion-proof type of electrical equipment (explosion-proof type)
I: Electrical Equipment Category Level (Class I)
Mb: suitable for underground coal mines
YBK3 explosion-proof motor model: the meaning of YBK3-160M-4
Y: asynchronous motor
B: flameproof type
K: mine
3: The third modification design
160: Motor center height (160mm)
M: base length (S=short, M=medium, L=long)
4: Number of poles (4 poles)
Electrical equipment classification comparison table
Class II Electrical equipment for use in explosive gas atmospheres other than coal mines. The properties of Class II explosive gases are further classified as: IIA, IIB, IIC. Class II common flammable gases, vapors, and temperature groups are shown in the table below. Class II is used in explosive dust environments other than coal mines, and Class III is reclassified: Class IIIA: flammable flying flakes; Class IIIB: non-conductive dust; Class IIIC : conductive dust;
Suitable for use in hazardous areas of Zone 1 and Zone 2 with explosive atmospheres. It can be used in different industries such as petrochemical industry, coal mine, mining, port, power plant, machinery industry, etc. to drive various general machinery, such as fans, compressors, feed pumps, crushers, hoists, centrifuges, cutting machine tools, transportation machinery etc., is the most ideal driving device.
Operating conditions of YBK3 explosion-proof motor
Rated voltage: 380V, 660V, 1140V, 380/660V, 660\1140V.
Rated frequency: 50Hz
Working mode: continuous working system S1.
Special needs need to be specified.
YBK3 explosion-proof motor environment requires the use of standards
The altitude does not exceed 1000 meters, the ambient air temperature: the minimum ambient air is -15 ℃, the maximum is 35 ℃ in the coal mine underground mining face, and the maximum relative humidity of the ambient air does not exceed 95% (when the temperature is 25 ℃)
Outlet of YBK3 explosion-proof motor junction box
Before unpacking the YBK3 explosion-proof motor, check whether the packing box is intact.
After unpacking the YBK3 explosion-proof motor, carefully remove the dust and rust-proof coating of the YBK3 explosion-proof motor, and read the instruction manual in detail.
The following inspections must be carried out before the YBK3 explosion-proof motor is installed. If it does not meet the requirements, it is not allowed to be put into use.
a. There are explosion-proof marks and explosion-proof certificate numbers, which are consistent with the requirements for the use of YBK3 explosion-proof motors;
b. The parts of the flameproof enclosure are correctly connected and fastened reliably;
c. All flameproof parts should be free of cracks and defects affecting flameproof performance (new motors that have not been dismantled may not be inspected);
d. The bearing grease injection and oil discharge device is unobstructed.
e. Insulation resistance between the stator winding and the casing: not less than 0.38MΩ when the rated voltage is 380V; not less than 0.66MΩ when the rated voltage is 660V, not less than 1.14MΩ when the rated voltage is 1140V.
The YBK3 explosion-proof motor is driven by an elastic coupling. The center of the YBK3 explosion-proof motor and the main shaft to be driven must be consistent, otherwise it will cause bearing damage and shaft fracture.
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