YBX3 explosion-proof motor - a new generation of high-efficiency and energy-saving motors,GROUP OF COMPANY SEALOCEAN,CHINA FACTORY

——Comprehensive analysis of YBX3 explosion-proof motor model, grade, characteristics, standard, installation method, parameter table

 

GROUP OF COMPANY SEALOCEAN,CHINA FACTORY YBX3 explosion-proof motor, also known as YBX3 explosion-proof three-phase asynchronous motor, is a new generation product developed through technical research and development of YB3 explosion-proof motor. The motor has high efficiency, energy saving, large temperature rise margin, long life, good performance and low noise. , Advanced explosion-proof structure, excellent starting performance, beautiful appearance, high reliability, no sparks during operation, convenient use and maintenance, etc. The YBX3 explosion-proof motor efficiency index conforms to the GB18613-2012 "small and medium-sized three-phase asynchronous motor energy efficiency limit value and energy efficiency grade" motor energy efficiency level 2 index, and is equivalent to the IE3 connection of IEC60034-30. Its power grade and installation size are in line with IEC standards and are similar to YB2 and YB3 series motors, which are conducive to the deployment of export equipment and the replacement of existing equipment. This series of motors can also be made into wet tropic type YBX3-TH, dry tropic type YBX3-TA, outdoor type YBX3-W and outdoor anti-moderate corrosion type YBX3-WF1, outdoor strong anti-corrosion type YBX3-WF2 and outdoor damp heat type YBX3- THW, outdoor dry tropical type YBX3-TAW, tropical type YBX3-T, outdoor tropical type YBX3-TW, indoor anti-medium corrosion type YBX3-F1, indoor strong anti-corrosion type YBX3-F2.

Ex d IIC T4 Gb is suitable for use in factories where Class IIC, temperature groups are T1, T2, T3 and T4 where explosive gas mixtures exist. On the basis of YBX3 basic series motors, YBX3-W outdoor type, YBX3-TH wet tropical type, YBX3-THW outdoor wet tropical type, YBX3-TA dry tropical type, YBX3-TAW outdoor dry tropical type, YBX3- T tropical type, YBX3-TW outdoor tropical type and YBX3-WF1 outdoor medium anti-corrosion type and other climatic environmental conditions. 3. Implementation standards The main implementation standards of YBX3 series high-efficiency flameproof three-phase asynchronous motors are as follows: GB 755-2008 Ration and performance of rotating electrical machines GB/T 1032-2012 Test methods for three-phase asynchronous motors GB 3836.1-2010 Explosive atmosphere Part 1 : General Requirements for Equipment GB 3836.2-2010 Explosive Atmospheres Part 2: Equipment Protected by Flameproof Enclosure "d" GB/T 4942.1-2006 Protection Level (IP Code) of Rotating Electric Machine Overall Enclosure Structure Classification GB 10068-2008 Shaft Center Height Measurement, Evaluation and Limitation of Mechanical Vibration and Vibration of Motors of 56mm and Above Motor energy efficiency limit value and energy efficiency grade

YBX3 explosion-proof motor can be used for fixed equipment in coal mine (non-excavation working face) or factory IIB grade. Due to the explosion-proof requirements that YBX3 high-efficiency explosion-proof motor must meet, there are many explosion-proof grades, including EXDI and EXDII. The ones with EXDI are used in the non-excavation face of coal mines, and the important gas is methane. EXDII is used in the workplace where the ignition temperature group is T1~T4 group of flammable gas or explosive mixture formed by steam and atmosphere. The drive motor of mechanical equipment in the place where the temperature group is T1-T4 group of combustible gas or the explosive mixture of steam and air, mainly used in coal mine, petroleum natural, petrochemical and chemical industry. As the main power equipment, explosion-proof motors are usually used to drive pumps, fans, compressors, conveyors and other transmission machinery. In addition, it is also widely used in textile, metallurgy, transportation, grain and oil processing, papermaking, medicine and other departments.

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;

The installation method of YBX3 explosion-proof motor complies with the provisions of GB997 "Motor Structure and Installation Type Code" and IEC34-7. This series of motors has the following 5 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. B14—The machine base has no feet and the end cover has a small flange; B34—The machine base has feet and the end cover has a small flange. This series of motors can be derived from the above 5 basic structures, and 15 common structures and installation types can be derived as shown in the following table:

The Ministry of Finance and the National Development and Reform Commission jointly issued the "Notice on Printing and Distributing the Implementation Rules for the Promotion of High-efficiency Motors for Energy-Saving Products Benefiting the People", which included high-efficiency motors into the implementation scope of energy-saving products Benefiting the People and promoted them by means of financial subsidies.

A subsidy of 15-40 yuan per kilowatt for low-voltage three-phase asynchronous motors with energy efficiency grades of one and two; a subsidy of 12 yuan per kilowatt for high-voltage three-phase asynchronous motors; and a subsidy of 40-60 yuan per kilowatt for rare earth permanent magnet motors.

Policy subsidy scope:

1. Low-voltage three-phase asynchronous motors with rated power ranging from 0.55 kW (inclusive) to 315 kW (inclusive) and rated voltage of 690 volts and below (referred to as low-voltage three-phase asynchronous motors).

2. Rare earth permanent magnet three-phase synchronous motor (referred to as rare earth permanent magnet motor) with rated power ranging from 0.55 kW (inclusive) to 315 kW (inclusive) and rated voltage of 690 volts and below.

3. High-voltage three-phase asynchronous motors (referred to as high-voltage three-phase asynchronous motors) with rated power ranging from 355 kW (inclusive) to 25,000 kW (inclusive) and rated voltage of 6,000 volts or 10,000 volts.

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Q: Is the YBX3 explosion-proof motor a new type of high-efficiency and energy-saving motor?

Answer: Yes, the YBX3 explosion-proof motor is a high-efficiency and energy-saving motor, and the energy efficiency level is 2.

Q: What is the difference between the YBX3 explosion-proof motor model and the YB3 explosion-proof motor model?

A: There is no difference between the two, the model, type and installation method are all universal. YBX3 explosion-proof motor is more energy-saving and efficient.

Q: Is the YBX3 explosion-proof motor expensive? How much more expensive than YB3?

A: The price is a little more expensive than the YB3 explosion-proof motor, but considering the energy saving and high efficiency, it is recommended to choose the YBX3 motor, which can save 5~15% of the total power consumption of the motor.

Q: Can YBX3 explosion-proof motors enjoy national energy-saving subsidies?

Answer: Yes, the motor power consumption of YBX3 explosion-proof motor and YBK3 explosion-proof motor belongs to the motor within the scope of the national energy-saving subsidy.

Q: What is the reason for the explosion sound of YBX3 explosion-proof motor during operation?

Answer: The motor coil is temporarily grounded or the coil is temporarily short-circuited.

Q: The motor won't start and there is no sound

A: First, check that the motor power supply has no electricity, and then check whether the fuse is blown or the starter has tripped.

Q: What is the reason for the low speed of the motor after starting?

Answer: The power supply voltage is too low, the motor is overloaded, the stator coil is short-circuited, the short-circuit ring of the rotor, the cage bar is broken or welded.

Q: The motor cannot be started normally, and there is a buzzing sound after starting

Answer: The bearing is damaged, and the air gap between the stator and the rotor is abnormal, so that the stator and the rotor collide. Stuck by the driving machine. One phase of the power line is broken, or one phase of the fuse is blown, or one phase of the motor winding is broken.

Q: The motor temperature is too high, but the current does not exceed the rated value

Answer: The ambient temperature is too high, the motor ventilation passage is blocked, and the motor sludge and dust are too much to affect the heat dissipation.

Q: The fuse blows when the motor starts

Answer: The stator coils are connected in opposite directions, the bearing is damaged, misoperation during startup, the stator coil is short-circuited or grounded, the transmission belt is too tight, and is stuck by the driving machine.