AC Driver Variable Frequency Drive for 3 Phase

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Product Description:

  ac variable frequency drive for 3 phase water pump and blower with best quality and price


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




 SVF-G7 series VFD communicate with PC, PLC etc upper machines, and they need the support of standard expansion cards SC-EXT1-IO. And the cards supply RS485 communication interface. Between the upper user machine and frequency inverter communicate through the international standard ModBus communication, and the upper user machine as host machine, and the frequency inverter as slave machine. The communication content could be finished as follows: send operating command to frequency inverter, setting operating frequency, changing function code parameters, reading frequency inverter operation situation, monitoring parameters, fault information, function code etc.



Technical Parameter


VFD Capacity

Input Voltage (V)

Power Capacity (KVA)

Input Current (A)

Output Current (A)

Adapter Motor(KW)


3 Phase 380V Range:-15%~20%






















Model Size


VFD Model






Installation Aperture  

Weight (Kg)














Factory Overview


AC Driver  Variable Frequency Drive for 3 Phase.JPG



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AC Driver  Variable Frequency Drive for 3 Phase


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Q:ASUS power adapter Acer can use it
3. The size of the joint is appropriate. (If the connector is too loose, will be bad, excessive fever.) If it is for DELL and HP / Compaq and other notebook power adapter, will involve a decoding problem. Please pay attention when the pro to buy. Acer and Asus are not yet available. It is said that the market is also very popular universal adapter, a friend bought a LVSUN brand universal adapter LS-PAB90-BC10, with eight joints. Adapter has a liquid crystal display, you can also automatically switch the voltage, very smart, with more than a year, has also been used.
Q:I have a 5.5 kilowatts of 4-pole motor, want to pass through the inverter, slow down to 130 per minute use, eliminating the need for speed,
Power will drop, down to the original one-tenth
Q:Can different brands of laptop power adapters be generic?
First look at the specifications, voltage, power, current, are matched after looking at the interface, all the same can be used, or else the two are bad.
Q:The notebook power adapter flashes
1: Check the socket with a multimeter is normal, the supply voltage is 220V. If the utility voltage is not normal, it is recommended to replace the use of environmental testing. 2: Check with the multimeter whether the output voltage and current of the power adapter match the label. If the gap is very large, and the mains voltage is normal, you can determine the power adapter failure, need to replace the laptop power adapter. 3: If the above check is normal, remove the laptop battery, do not external adapter. Press and hold the notebook power button 5 seconds to repeat 3 times. After releasing the notebook residual charge, insert the power adapter separately, power on the test. 4: If the fault persists, check the notebook's power connector, whether the exception. Such as loose or the appearance of damage and so on. 5: the above checks are normal, basically can be a preliminary judgment is the notebook motherboard failure. Recommended repair service station.
Q:Is the laptop power adapter long-haul?
This is not good, If you need to shut down, then it is recommended that the power adapter plug from the board to pull down. Because if only pull the adapter and the computer plug so that the adapter will still have the internal current through, hear the small sound is actually the sound of the current. So it is recommended that the power adapter from the outlet on the unplugged, and the computer connected to the one do not have to pull, so that will not cause the power adapter power and convenient computer to open.
Q:Jd1a-40 motor speed controller and how to connect the motor
Speed ​​control motor wiring method: 3.4.5 is the terminal of the tachogenerator (U / V / W) from the right-to-left order of 1.2 for the excitation coil (F1 / F2) terminal, from the extended end of the speed motor (electromagnetic clutch) Master 7 plugs on the air plugs (governor): terminal 1.2 for the 220v input, 3.4 on the speed of the motor on the excitation coil, 5.6.7 speed motor on the tachogenerator. Motor speed control method: The speed regulating motor is to change the speed of the motor by using the series, voltage, current, frequency and so on of the motor to make the thyristor voltage regulation method the best.
Q:The emitter E of the inverter inverter module and the AC output U are not directly connected together
Pairs of modules are connected in a phase branch The phase output is derived from the neutral point between the modules
Q:Which machines are used for the frequency converter
Frequency converter is widely used in the speed regulation of AC motor.Varameter speed 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, air conditioning and other fields.
Q:Please recommend a high performance laptop power adapter?
Power adapter can recommend you what model you get what model ah he is a standard can not just recommend
Q:ASUS notebook power adapter can be universal? is it?
Yes, see the same parameters as the interface on the line

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