Frequency Drive 7.5kw 380v 3 Phase Inverter

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7.5kw 380v 3 phase frequency inverter for air compressor  


Reckoned to be the quality-oriented organization, we ensure that clients are served efficiently most appropriate manner. Clients appreciate our range for their quality and easy availability, besides the reasonable prices. Suggestions of clients are always welcomed and we make changes accordingly if required. We ensure that queries of clients are solved in minimum time-frame with appropriate solutions.


Introduction of SVF-G7 Series High-performance Vector General-purpose Frequency Inverter


1. Voltage class: 380V

2. Range of power: 0.4KW~450KW

3. Stable and reliable Control Mode

(1) VF control: Multiple curve could been chosen, Linear V/F curve, 2.0 times power drop torque V/F curve, custom V/F percentage(can realize manual energy saving control), multipoint VF curve. This apply to the situation that one frequency inverter drives multiple motors, such as fan, water pump, engraving machine, injection molding machine etc.

(2) Open-loop vector control: Steady speed with high precision, wide range of speed governing, as the speed ratio is 1:200 and 180% rated torque could be output in 0.5Hz. Good dynamic performance.

Open-loop vector is suitable for high-Performance universal occasions such as machine tools, centrifuges, cranes and handling equipment, rolling mill and other loads.

(3) Torque control: Fast torque response,<20ms, precision torque: <5%, applied to winding, drawing and other occasions.



Reckoned to be the quality-oriented organization, we ensure that clients are served efficiently most appropriate manner. Clients appreciate our range for their quality and easy availability, besides the reasonable prices. Suggestions of clients are always welcomed and we make changes accordingly if required. We ensure that queries of clients are solved in minimum time-frame with appropriate solutions.


Trade terms


a. Delivery term

We will delivery for you after you done the full payment within 3 to 15 working days.

b. Payment

For small order by air or by express, it is 100% T/T in advance.

For large order by ocean, 30% deposit of the order value should be paid, 70% of the balance payment should be done before delivery.

c. Packing                            

Unless otherwise stated in the offer, the prices include packing in accordance with CHINSC’S customary standard of packing.

Applicable fields

Widely used in various fields such as metallurgy, petroleum, chemical industry, textile, power, construction material, coal, pharmacy food, paper making, plastic, printing & dying, lifting, cable making, washing, water supply, heat & ventilation, sewage treatment and son on. In addition the products can also be applicable to draw benches, mixers, extruders, winding machines, compressors, fans, pumps, grinding machines, belt conveyors, hoists and centrifuges.

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Q:What is the output voltage of the laptop power adapter?
Generally have 19V of the common friends, I was 19V
Q:Three sets of batteries (540V) DC power supply U / f inverter.
It is estimated that the battery should be string - and - series connection method, and then rectifier part of the converter (which may also be caused by the switch) is actually a series of diodes in series, positive and negative after the reverse is actually the battery is Negative shorts, resulting in burning, as to burn only one of the group of a few cells, it should be string - and - string and that group, because the parallel to bear it double voltage.
Q:Is the motor having a variable frequency motor and a variable voltage motor?
According to the way to start talking about a variable frequency motor and variable voltage motor
Q:Master Hello a machine requires 500 speed matching 6-pole motor frequency converter transferred to about 28HZ
If the machine needs the same speed, constant 500r / min This can be directly with the motor, remove the inverter, but also save costs, while the motor at 50Hz, the maximum power point of rated power. Output torque is the most stable point. The pulley diameter becomes smaller and the reduction ratio increases, and the torque required by the motor becomes smaller, which is advantageous for the motor. 960/500 = 1.92, that is to say the motor pulley compared to the original tune less 1.92 times
Q:Octopus AC Servo motor can be driven with ordinary inverter?
If it is asynchronous motor, then take the power, voltage matching ordinary inverter drive no problem, you only need to enter the appropriate parameters, such as current, power size and other parameters, and then off-line parameters from the adjustment (if the vector control run), you can run
Q:How to choose the right inverter?
2, constant torque load Constant torque load equipment requires low frequency inverter torque, dynamic response speed. Inverter 0HZ vector state, to 150% of the torque, to meet the needs of various conditions. For example: a dredger owner bucket inverter system, is a constant torque load, dual motor, and the load overload time is long, so the inverter configuration configuration to enlarge the two models of the G-type machine, while the power supply for the device Machine power supply, the inverter must be configured to input AC reactor.
Q:What is the characteristic of the variable pole speed method?
Seven, hydraulic coupler speed control method The hydraulic coupler is a hydraulic drive, generally composed of a pump wheel and a turbine, which collectively referred to as a working wheel and placed in a sealed housing. The shell is filled with a certain amount of working fluid, when the pump wheel in the prime mover driven under the rotation, in which the liquid by the blade to promote the rotation, under the action of centrifugal force along the outer ring into the turbine wheel, in the same direction to the Turbine blades are thrusted to drive the production machinery. The power transfer capacity of the hydraulic coupler is consistent with the size of the relative filling fluid in the shell. In the course of work, change the liquid filling rate can change the coupler's turbine speed, made stepless speed regulation, which is characterized by: power to adapt to a large range, from several tens of kilowatts to thousands of kilowatts to meet the different power needs; Simple, reliable, easy to use and maintenance, and low cost; small size, can accommodate large; easy to control and easy to achieve automatic control. This method is suitable for fan, pump speed.
Q:The inverter flat rate transferred to 29, on the submersible pump to burn the coil ?!
1. submersible pumps are generally the problem, far away from the reflection voltage, the pump insulation breakdown, in particular, to better pump. 2. Distance away, the inverter and pump connection thicker. 3. Then on the output filter.
Q:The notebook power adapter flashes
The problem is very simple Well, used to know all the notebook Kazakhstan, the adapter has a light above, if it is lit that is the problem of the notebook, the other side of the notebook above also have a power indicator, the notebook above prompted the red, but not Rushed, that is, the problem of the notebook, the computer problem, you directly on the factory is finished, if the insurance, and casually find a place to repair a Kazakhstan, 50-80 yuan if the adapter is bad, buy a generic You can, but also more than 50 points, the last time I bought a bad 58 yuan, ASUS GM, to help people in the end, to give you a shop to buy the adapter, you ask the owner of Kazakhstan to get,
Q:5.5 kW 4-pole motor with the fastest speed can exceed the rated speed?
The speed of the AC motor is related to the frequency of the power supply. Frequency AC frequency of 50hz, asynchronous motor rated speed of about 1440 r / min, increase the frequency of course can improve the speed, naturally can exceed the rated speed, provided that the motor load to be reduced. If you need to improve more, need to replace the inverter motor, improve the motor heat dissipation characteristics.

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