High Medium Voltage Drive 3KV 1100KW VFD

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Tianjin
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1 pc
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10000 pc/month

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Energy-saving Solutions for Enterprise
1、Program Overview
◆Saving energy achieves 10% -70%
◆The enterprises do not need to pay for expense of equipment manufacture and installation.
◆Enterprises only need to pay the saving electricity expense to our company according to the actual quantity of energy saving after the equipments put into operation.
◆According thousands of the projects’ implementation experiences, such projects recover the investments in three or four years. (Equipment service life is 15 years)。
◆Our company will no longer charge the saving electricity expense after recovering the investment.


2、Implementation Process
Energy Audit
Energy Saving Program Design
Construction Design
Equipments Manufacture
Construction and installation
Maintenance and Repair
Energy Monitoring and Efficiency Insurance
Recovery of Program Investment


3、Program Features
High energy-saving efficiency
The project saving rate is generally 10% -30%, highest is up to 70%.
Clients Zero Investment
All works of design, audit, manufacturing, construction, monitoring are handled by RXPE, clients does not require investment.
Energy-saving Guarantee
RXPE promises the amount of energy saving, ensuring that clients’ cost reduction immediately.
Short Investment Recovery Period
The investment recovery period is short, average period is 3-4 years.
Low Risk
Customers do not input large sums of money also can enjoy professional energy-saving products, technologies and services, and the investment risk is very low.
Improvement of Cash Flow
Customers with the support of RXPE approve energy-saving program to improve cash flow, invest the limited funds into other priority investment areas.
Enhance competitiveness through implementing energy conservation, improving energy-saving efficiency, reducing energy costs and enhancing the quality of environment, establish green corporate image and enhance market competiveness.

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Q:My motor is a low frequency 8 pole motor, about 80W. I would like to choose a frequency converter
Poor match, the program is unreasonable Current 1.5A, choose a single-phase 220v power supply, 370-500w inverter it
Q:What is the common COM point of the PLC and the inverter? Is it positive?
It depends on your PLC and inverter I / O is what type, the most simple can be divided into two kinds of NPN and PNP, NPN COM point is negative, PNP COM is positive.
Q:What is the working principle of high voltage electrodes and frequency converters?
The general high and low methods are used in low-power high-voltage motor to do with energy-saving energy. Low-high-mode high-voltage inverter is controlled by a low-voltage inverter, the voltage directly to the motor with a step-up transformer voltage. Low-high mode is also used in low-power high-voltage motor to do with energy-saving energy.
Q:Lenovo laptop power adapter side of the feet which is positive
Power adapter is a small portable electronic equipment and electrical and electronic power supply conversion equipment, generally by the shell, power transformer and rectifier circuit, according to its output type can be divided into AC output and DC output type; by way of connection Divided into wall and desktop.
Q:What is the difference when using inverter frequency conversion ordinary motor and variable frequency inverter motor
First of all you have to understand the difference between variable frequency motor and ordinary asynchronous motor. 1, inverter motor cooling fan is not connected with the motor spindle, is independent, the fan rotation from the motor speed, to ensure that the motor cooling.
Q:Will the asynchronous motor pole change the number of speed control can also be combined with the frequency converter
Of course, because the factors that determine the speed of asynchronous motor power supply voltage, frequency and motor pole pairs, so asynchronous motor speed can be achieved by changing the number of magnetic pole pairs, but this method needs to make a greater motor changes, Trouble, and change the number of poles can only achieve a single speed change;
Q:Does the teacher know the working principle of the inverter?
The frequency converter is an AC-DC-AC power electronic device that converts 50 Hz AC sine wave into straight high voltage direct current and then converts it into an AC power that can control the voltage and frequency, driving the three-phase AC motor.
Q:Yaskawa inverter reported base blockade what is the reason?
Yasukawa compared garbage on the signal board on the small line of poor oxidation, and get like, this is a weak signal, and safety relays connected, do not use high-grade security circuit with a small line short, Yasukawa A 1000 factory is short for a long time after the oxidation of the base blockade
Q:How do I select a drive? Which brand is better
 Ampang letter company can provide different types of inverter, the user can according to their actual process requirements and the use of occasions to choose different types of frequency converter. When selecting the inverter, note the following precautions:     1, according to the load characteristics of the inverter, such as the load for the constant torque load; fan, pump load should be selected AM300 inverter.     2, select the inverter should be the actual motor current value as the basis for selection of the inverter, the motor rated power can only be used as a reference. Also should take full account of the output of the inverter contains high harmonics, will cause the motor power factor and efficiency will be bad. Therefore, with the inverter to the motor power supply and power grid power supply compared to the motor current increased by 10% and the temperature increase of about 20%. Therefore, in the choice of motor and inverter, should take into account the situation, the appropriate margin to prevent the temperature rise is too high, affecting the motor life.     3, the inverter to long cable operation, this time should take measures to suppress the long cable to the ground coupling capacitor, to avoid the inverter output is not enough. So the inverter should be amplified or selected to install the output reactor at the output of the inverter.
Q:What parts of the inverter composition
Frequency control technology is an important development direction of modern power transmission technology, with the development of power electronics technology, AC frequency conversion technology from theory to practice gradually mature. Inverter not only smooth speed, large range, high efficiency, start current is small, smooth operation, and energy saving effect is obvious. Therefore, the exchange frequency control has gradually replaced the traditional traditional slip speed, variable speed control, DC speed control system, more and more widely used in metallurgy, textile, printing and dyeing, smoke machine production lines and buildings, Water supply and other fields. However, due to the environment, the use of life and man-made operation and other factors, affecting the life of the inverter greatly reduced, while the use of a variety of failures have occurred. Here we are on the composition of the inverter and common problems and countermeasures and we discuss. Generally divided into rectifier circuit, flat wave circuit, control circuit, inverter circuit, and so on several major parts.

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