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M2JA-BP explosion-proof inverter motor

M2JA-BP80M2A

M2JA-BP80M2B

M2JA-BP90S2A

M2JA-BP90L2A

M2JA-BP100L2A

M2JA-BP112M2A

M2JA-BP132S2A

M2JA-BP132S2B

M2JA-BP160M2A

M2JA-BP160M2B

M2JA-BP160L2A

M2JA-BP180M2A

M2JA-BP200L2A

M2JA-BP200L2B

M2JA-BP225M2A

M2JA-BP250M2A

M2JA-BP280S2A

M2JA-BP280M2A

M2JA-BP315S2A

M2JA-BP315M2A

M2JA-BP315L2A

M2JA-BP315L2B

M2JA-BP355M2A

M2JA-BP355L2A

M2JA-BP80M4A

M2JA-BP80M4B

M2JA-BP90S4A

M2JA-BP90L4A

M2JA-BP100L4A

M2JA-BP100L4B

M2JA-BP112M4A

M2JA-BP132S4A

M2JA-BP132M4A

M2JA-BP160M4A

M2JA-BP160L4A

M2JA-BP180M4A

M2JA-BP180L4A

M2JA-BP200L4A

M2JA-BP225S4A

M2JA-BP225M4A

M2JA-BP250M4A

M2JA-BP280S4A

M2JA-BP280M4A

M2JA-BP315S4A

M2JA-BP315M4A

M2JA-BP315L4A

M2JA-BP315L4B

M2JA-BP355M4A

M2JA-BP355L4A

M2JA-BP80M6A

M2JA-BP80M6B

M2JA-BP90S6A

M2JA-BP90L6A

M2JA-BP100L6A

M2JA-BP112M6A

M2JA-BP132S6A

M2JA-BP132M6A

M2JA-BP132M6B

M2JA-BP160M6A

M2JA-BP160L6A

M2JA-BP180L6A

M2JA-BP200L6A

M2JA-BP200L6B

M2JA-BP225M6A

M2JA-BP250M6A

M2JA-BP280S6A

M2JA-BP280M6A

M2JA-BP315S6A

M2JA-BP315M6A

M2JA-BP315L6A

M2JA-BP315L6B

M2JA-BP355M6A

M2JA-BP355M6B

M2JA-BP355L6A

M2JA-BP80M8A

M2JA-BP80M8B

M2JA-BP90S8A

M2JA-BP90L8A

M2JA-BP100L8A

M2JA-BP100L8B

M2JA-BP112M8A

M2JA-BP132S8A

M2JA-BP132M8A

M2JA-BP160M8A

M2JA-BP160M8B

M2JA-BP160L8A

M2JA-BP180L8A

M2JA-BP200L8A

M2JA-BP225S8A

M2JA-BP225M8A

M2JA-BP250M8A

M2JA-BP280S8A

M2JA-BP280M8A

M2JA-BP315S8A

M2JA-BP315M8A

M2JA-BP315L8A

M2JA-BP315L8B

 

In hazardous areas, the correct use of explosion-proof electrical installations is extremely important. For this reason, many countries have stipulated the structure and usage of explosion-proof electrical installations. GB 3836 ~ 2000 standard for electrical equipment for explosive gas environment is equivalent to IEC60079, but higher than IEC60079 standard. According to the specific conditions in China, several key points of the original standard of China are added to IEC60079 to form the GB 3836 explosion-proof standard New features.

The M2JAX series (80 ~ 355) flameproof motor is the most advanced domestic factory developed by Shanghai ABB Electric Co., Ltd., which introduced the latest 21st century flameproof motor manufacturing technology of ABB Company and combines the characteristics of Chinese GB 3836-2000 standard Use 4-stage explosion-proof electric motor (Ex d llc) products (temperature group T1 ~ T4).

Technical characteristics:
★ high efficiency
Reached the second level value of European efficiency grade motor standard, and meet the energy efficiency limit value of small and medium three-phase asynchronous motors in accordance with the national standard of the People's Republic of China
★ Dual-bandwidth voltage
The voltage range is 220V ~ 690V, suitable for 50Hz and 60Hz power supply.
★ Low noise
By optimizing technologies such as electromagnetic design, ventilation conditions, and structural dimensions, the M2JA series motors have lower noise.
★ High bearing load capacity
The motor uses deep groove ball bearings for long life. The 80-132 center high motor is permanently lubricated. 160-355 is equipped with a refueling device.
★ Good reliability
The motor is a fully enclosed air-cooled structure with an IP55 degree of protection, and its materials and processes meet environmental requirements. The motor has high mechanical strength, strong and durable, and strong rust and corrosion resistance.
The winding has good reliability. It adopts F-level insulation structure and B-level assessment. And according to user needs, increase PTC thermistor or thermal switch.

Working conditions
Ambient air temperature varies with season but does not exceed -15 ℃ ~ 40 ℃
Above sea: no more than 1000m
Frequency: 50Hz / 60Hz
Voltage: 220V ~ 690V
Working mode: continuous (S1)
Starting method: full voltage start, Y- △ start or reactance start
Transmission method: Elastic coupling or spur gear transmission can be used for insulation and heating: Class F However, the stator winding temperature rise limit is 80K, which means that it is evaluated according to the B level (resistance method). Bearing allowable temperature does not exceed 95 ° C (thermometer method).
Cooling method: IC416

Explosion-proof variable frequency motor is a type of explosion-proof motor products, and it is the basic power equipment of industrial agriculture. We have some understanding of explosion-proof variable-frequency motors, and introduce his basic structure and principle characteristics, hoping to help everyone.

     With the rapid development of electronic technology, the use of "explosion-proof variable frequency motor + frequency converter" AC speed regulation method is making a change in the speed regulation field with its high performance and economy. The benefits he brings to the required industries Yes, it saves energy, improves product qualification rate and product quality, which greatly improves mechanical automation and production efficiency.

     Explosion-proof frequency conversion motor adopts B and temperature rise design, F-level insulation manufacturing, polymer insulation material and vacuum pressure dip paint manufacturing process and special insulation structure, which makes the electrical windings withstand voltage and mechanical strength have been greatly improved, which is enough Competent for high-speed operation of motors and resistance to high-frequency current shocks from inverters and damage to insulation caused by voltage. The balance quality is high, and the vibration level is R level (reduced vibration level). The mechanical parts have high processing precision, and the special high-precision bearings are used, which can run at high speed. Forced ventilation cooling system, all use imported axial flow fan ultra-quiet, high life, strong wind. Ensure that the explosion-proof motor is effectively cooled at any speed, and can achieve high-speed or low-speed long-term operation.

     Advantages of explosion-proof inverter motor:

1. With start function.

2. The electromagnetic design is adopted to reduce the resistance of the stator and the rotor.

3. Adapt to frequent shifting under different working conditions.

4. Energy saving to a certain extent.

Inverter is a device that converts alternating current with fixed voltage and frequency into alternating current with variable voltage or frequency. It has a very wide range of applications in actual production. So what is the working principle of the inverter? The Electrician's House will take you to share with you.

Its main circuit is composed of three parts, namely rectifier, smooth wave circuit and inverter, and is generally divided into current type and voltage type. The voltage type is an inverter that converts the DC of a voltage source into an AC, and the filtering of the DC circuit is a capacitor. The current type is a frequency converter that converts the direct current of a current source into an alternating current. Its DC loop filter is an inductor. It consists of three parts, a "rectifier" that converts a commercial frequency power supply into DC power, a "flat wave circuit" that absorbs voltage ripples generated by converters and inverters, and an "inverse" that converts DC power to AC power. Transformer. "

Rectifier

Recently, a diode converter is widely used, which converts a power frequency power supply into a DC power supply. It is also possible to use two sets of transistor converters to form a reversible converter. Because its power direction is reversible, it can perform regenerative operation.

Flat wave circuit

The DC voltage rectified by the rectifier contains a pulsating voltage that is 6 times the frequency of the power supply. In addition, the pulsating current generated by the inverter also changes the DC voltage. To suppress voltage fluctuations, inductors and capacitors are used to absorb the pulsating voltage (current). If the device capacity is small, if there is a margin in the power supply and main circuit components, the inductor can be omitted and a simple smoothing circuit can be used.

Inverter

Contrary to the rectifier, the inverter converts DC power to AC power of the required frequency, and when the 6 switching devices are turned on and off at a determined time, a 3-phase AC output can be obtained. Take the voltage type PWM inverter as an example to show the switching time and voltage waveform.

Control circuit

It is a circuit that provides control signals for the main circuit that supplies power to the asynchronous motor (voltage and frequency are adjustable). It has a frequency and voltage "calculation circuit", a main circuit "voltage and current detection circuit", and a motor "speed detection circuit". It consists of a "driving circuit" that amplifies the control signal of the arithmetic circuit, and a "protection circuit" of the inverter and the motor.

(1) Operation circuit: Compare the external speed and torque commands with the current and voltage signals of the detection circuit to determine the output voltage and frequency of the inverter.

(2) Voltage and current detection circuit: Detect the voltage and current from the main circuit potential.

(3) Drive circuit: A circuit that drives the main circuit device. It is isolated from the control circuit to make the main circuit device on and off. (4) Speed ​​detection circuit: Take the signal of the speed detector (tg, plg, etc.) installed on the asynchronous motor shaft machine as the speed signal, and send it to the calculation circuit. According to the instruction and operation, the motor can run at the instruction speed.

5 (5) Protection circuit: Detect the voltage and current of the main circuit. When an abnormality such as overload or overvoltage occurs, in order to prevent damage to the inverter and asynchronous motor, stop the inverter or suppress the voltage and current value.

The analog signal of the external potentiometer is sent to the CPU through analog-to-digital conversion to achieve the purpose of speed regulation. The external switch signal is also sent to the control CPU via the NAND gate.

Construction principle of variable frequency motor
When the speed of the asynchronous motor does not change much, the speed is proportional to the frequency. It can be seen that changing the power frequency can change the speed of the asynchronous motor. In the frequency conversion speed regulation, it is always hoped that the main magnetic flux remains unchanged. If the main magnetic flux is larger than the magnetic flux during normal operation, the magnetic circuit is oversaturated to increase the excitation current and the power factor is reduced. If the main magnetic flux is smaller than the magnetic flux during normal operation, the motor torque is reduced.

Main features of variable frequency motor
Special frequency conversion motor has the following characteristics:

Class B temperature rise design, class F insulation manufacturing. High polymer insulation material and vacuum pressure dip paint manufacturing process and special insulation structure are adopted to make the electrical windings with higher insulation withstand voltage and higher mechanical strength, which is sufficient for high-speed operation of the motor and resistance to high-frequency current shock and voltage of the inverter. Damage to insulation.

High balance quality, vibration level is R level (reduced vibration level), high precision machining of mechanical parts, and the use of special high-precision bearings, can run at high speed.

Forced ventilation and cooling system, all adopt imported axial flow fan with ultra-quiet, high life and strong wind. Ensure that the motor gets effective heat dissipation at any speed and can achieve high-speed or low-speed long-term operation.

Compared with traditional inverter motors, YP series motors designed by AMCAD software have a wider speed range and higher design quality. Special magnetic field design further suppresses high-harmonic magnetic fields to meet the requirements of wide frequency, energy saving and Low noise design index. With a wide range of constant torque and power speed regulation characteristics, the speed is stable and there is no torque ripple.

It has good parameter matching with various types of inverters. With vector control, it can achieve zero speed full torque, low frequency and large torque and high precision speed control, position control and fast dynamic response control. YP series frequency conversion special motors can be equipped with brakes and encoders to provide precise stopping, and achieve high-precision speed control through closed-loop speed control.

Using "reducer + frequency conversion dedicated motor + encoder + inverter" to achieve ultra-low speed stepless speed precise control. YP series inverter special purpose motors have good versatility, and their installation dimensions conform to IEC standards, and they are interchangeable with general standard motors.

The main circuit is the power conversion part that provides voltage and frequency regulation power for asynchronous motors. The main circuits of explosion-proof inverters can be roughly divided into two types: voltage type is an explosion-proof inverter that converts the DC of the voltage source to AC, and the filtering of the DC circuit It's a capacitor. The current type is an explosion-proof inverter that converts the direct current of a current source into an alternating current. Its DC loop filter is an inductor. It consists of three parts, a "rectifier" that converts a commercial frequency power supply into DC power, a "flat wave circuit" that absorbs voltage ripples generated by converters and inverters, and an "inverse" that converts DC power to AC power. Transformer. " (1) Rectifier: Recently, a diode converter has been widely used, which converts a power frequency power supply into a DC power supply. It is also possible to use two sets of transistor converters to form a reversible converter. Because its power direction is reversible, it can perform regenerative operation. (2) Flat wave circuit: The DC voltage rectified by the rectifier contains a pulsating voltage that is 6 times the frequency of the power supply. In addition, the pulsating current generated by the inverter also changes the DC voltage. To suppress voltage fluctuations, inductors and capacitors are used to absorb the pulsating voltage (current). If the device capacity is small, if there is a margin in the power supply and main circuit components, the inductor can be omitted and a simple smoothing circuit can be used. (3) Inverter: In contrast to the rectifier, the inverter converts DC power to AC power of the required frequency. By turning on and off the 6 switching devices at a determined time, a 3-phase AC output can be obtained. Take the voltage type PWM inverter as an example to show the switching time and voltage waveform. The control circuit is a circuit that provides control signals to the main circuit that supplies power to the asynchronous motor (voltage and frequency can be adjusted). It has a frequency and voltage "calculation circuit", a main circuit "voltage and current detection circuit", and a motor "speed detection Circuit ", a" drive circuit "that amplifies the control signal of the arithmetic circuit, and a" protection circuit "for the inverter and the motor.

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