The following application case of Sunland SBH series high-voltage inverter is a very comprehensive display of the eight development directions of high-voltage inverter
High-voltage inverters, petrochemicals, mining, electricity
Application plan 1: petrochemical occupation: the application of Sunland double-engine hot standby high-pressure inverter on the gas blower of coking plant
The third-generation SBH high-voltage inverter dual-machine hot standby system has the characteristics of high precision, fast speed, and can automatically identify the direction of motor rotation. The switching time is up to milliseconds, the system can greatly enhance the reliability of the system, the switching process is smooth without any electrical and mechanical impact, has no impact on the normal production, and truly completes the two-way idle switching without disturbance, which can greatly improve the service life of the load, and ensure the continuous stability of the production, especially suitable for the use of key loads in various occupations.
Application plan 2 mining occupation: the application of Senlan high-voltage inverter on a 25-kilometer long-distance belt conveying system
Sunland's SBH series belt conveyor special high-voltage inverter has a variety of benefits, fully meets the various working conditions of long-distance multi-machine drive belt conveyor, and deals with the problem of long-distance multi-machine drive torque balance. So far, a total of 1 million tons of coal have been transported, saving nearly 15 million yuan in freight, resulting in high economic benefits, and the entire belt can fully recover the investment cost in less than two years.
Application plan 3: power occupation: large-scale coal-fired unit boiler feed pump frequency conversion speed regulation transformation program
The application of Sunland's high-pressure inverter in the boiler feed pump of large-scale coal-fired units puts forward a new idea for the energy-saving transformation of the high-power boiler feed pump. This scheme is a typical one-to-one scheme, and QS1 and QS2 are disconnectors.
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Learn the way of inverter - Senlan inverter
The inverter is an essential accessory in industrial use, and its main function is to regulate the speed of the motor. It is widely used in various equipment such as production F-line and machine tools. Many engineering people have touches.
The functions of the inverter are many, the parameters are complex, and it is difficult to play without professionals. ...
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The cause of the leakage problem of Sunland inverter
1. The cause of inverter leakage
According to the inverter to control the operation of the motor, the three-phase electricity is supplied to the inverter bridge (IGBT) through the filter capacitor through the rectification, and then the operation of the motor is controlled by the three-phase electricity with adjustable output frequency and voltage of the inverter.
We all know that the three-phase stator winding of the motor ...
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Commonly used motor protection method - Hope Sunland
1. Install a reactor at the output of the inverter: This method is the most commonly used, but it should be noted that this method has a certain effect on shorter cables (less than 30 meters), but sometimes the effect is not ideal.
2. In the inverter ...
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Sunland inverter soft start advantages
Sunland inverter and soft start is a first-class, reliable and reliable motor control system, which is able to meet the needs of various applications. The advantages of expected Sunland inverters and soft start are:
1. Performance: Expect Sunland inverter and soft start...
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Sunland won the "well-known brand of China's domestic inverter" for the fifth time in a row
On April 15, 2011, the "Century Tour of China's Automation Industry (CAIE2011)" was held in Beijing, and Sunland inverter was once again re-elected as "China's well-known brand of domestic inverter". Dr. Chen Bin, President of Continental Hope Group and Chairman of Hope Sunland Technology Co., Ltd., personally ...
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Inverter braking resistance connection method - Senlan inverter
If the drive has a built-in braking unit and additional braking resistors, it is important to pay attention to the correct wiring of the braking resistors. The braking resistor should be connected between the P terminal and the DB terminal, but not between the P terminal and the N terminal, otherwise the three-phase rectifier bridge will operate at full load when it is not running, resulting in the equipment can not be ...
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The correct wiring of the rail power supply
The rail-rail power supply is a kind of switching power supply that is installed through the rail-type device, which is mainly used to monitor the voltage, current, temperature and other different aspects of the equipment, so that it can play a good maintenance effect. This switching power supply has a variety of different characteristics such as small size and light weight, ...
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Selection and capacity matching of inverter - Senlan
1. Select the inverter according to the load characteristics
Second, when selecting the inverter, the actual motor current value should be used as the basis for the selection of the inverter, and the extra power of the motor can only be used as a reference. Secondly, it should be fully considered that the output of the inverter contains higher harmonics, which will form the power factor of the motor.
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Ensure the normal operation of the inverter in a humid environment
Due to the heavy rain and humidity in some areas recently, in order to avoid long-term power failure and the impact of wetting on the inverter, the following points can be used as various precautions before customers resume production:
1. Look inside the electrical cabinet, e.g. ...
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Common problems in the use of inverters - Hope Sunland
1. Please clarify the maintenance function of the inverter?
(1) After detecting the abnormal situation, take the initiative to correct the action, such as overcurrent loss speed prevention, regeneration overvoltage stall prevention.
(2) Block the power semiconductors after detecting the abnormality...
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What are the peripheral equipment for inverter selection - Senlan inverter
After the inverter selection is completed, it is necessary to consider whether other peripheral equipment needs to be equipped according to the actual situation of the site. The peripheral equipment for frequency converter selection mainly includes circuit breakers, reactors, contactors, braking resistors, etc.
1. Circuit breaker
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Attention to the shortcomings of the inverter - hope Senlan
The wiring interval between the motor and the inverter is too long, causing the new motor to catch fire
Burn two new motors in a row! The output current and voltage of the inverter are balanced, the input voltage is balanced, the current is unstable, the fluctuation is 20%-50%, the inverter is burned off by a short circuit between 35Hz turns, the grid voltage is very stable, 720V, ...
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Inverter with no-load operation and commissioning - Senlan
(1) Set the power of the motor, the number of pole pairs, and check the operating current of the inverter.
(2) Set the maximum output frequency and base frequency of the inverter and set the torque characteristics of the motor. Pressure/Frequency (V/F) Operators ...
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Hope the advantages of Sunland inverter soft start
It is hoped that Sunland inverter and soft start is a first-class, reliable and reliable motor control system, which can meet the needs of various applications. The advantages of Hope Sunland inverter and soft start are:
1. **Sex: I hope that Sunland inverter and ...
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Analysis of soft start technology of asynchronous motor - Senland
The thyristor communicates the voltage regulation and soft starts
The communication and voltage regulation soft engine of the thyristor is mainly to change the connection method of the thyristor, and the traditional connection method is changed to connect to the three windings, so that the power supply of the thyristor is completed by the method of parallel connection. Thyristor soft starters have a strong ...
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The reason for the low output voltage of the inverter - Senlan inverter
1. The power supply voltage is low
The solution is to preset the active voltage adjustment function of the inverter, so that when the frequency is low and the rated frequency is dry, the inverter has the function of active voltage stabilization, and if the output voltage is low, the inverter will actively increase the output voltage
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Hope for an application example of Sunland inverter
Industrial process control: It is expected that Sunland inverters are widely used in industrial process production control, such as conveyors, tugboats, air compressors, pumps, and fans and other equipment in various control systems.
Mechanical control: It is expected that Sunland inverters are widely used in mechanical control, such as ...
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Sunland inverter overcurrent fault maintenance method
When the inverter current is too large, exceeding the limit value of the inverter, the maintenance circuit will produce action, so that the inverter trips and stops, and the phenomenon of repairing such inverter can be divided into energized ...
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PLC control belt conveyor soft start method
Belt conveyor is a kind of continuous conveyor, which is one of the main types of fixed or escorted cranes. Belt conveyor is the use of friction to convey the dynamic, with belts, steel belts, steel fiber belts and chemical fiber belts as a kind of compliance with the transmission of materials and traction operations.
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The drive panel does not display fault analysis
1. The rectifier module is damaged
It is usually caused by grid voltage or internal short circuit. In the case of excluding internal short circuits, the rectifier bridge is replaced.
2. The inverter module is damaged
It is usually caused by damage to the motor or cable and the failure of the drive circuit. After repairing the drive circuit, ...
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