CNBM high Voltage Variable Frequency Drives are designed to be highly reliable with high-performance, yet easy to use.It can satisfy users' need for changing the speed of fans or pumps,as well as improve the productivity.
The series are compatible with all types of three-phase medium voltage asynchronous motors.
1. Voltage resource VFD, direct input of 3,3.3,4.16,6,606 and 10 kV,direct output of3,4.16, 6,6.6 and10 kV,no output transformer necessary. High input power factor, low harmonic current, no power factor corrective capacities and harmonic filters required. 2. Sinusoidal multi-level PWM output waveform, no output filter required, can be directly connected to standard induction motor,no harm to the insulation of the cable or the motor, low harmonics of the motor, reduction of vibration of the shafts or the vanes,with the maximal length of the output cable of 1000m.
3. Friendly human-machine interface. 4. Modular design of the power circuits simplifies maintenance routine.
Rated output current (A)
Motor power (kW)
Rted input voltage
Input power factor
0.96 with rated load
120% 1 min, 150% immediately
expanded according to requirement
<90% without condensation
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Q:Notebook plug in the power adapter lights, but can not open the machine
1. Remove the power adapter and battery, the host does not power the case, hold down the boot button does not move, keep the notebook 30 seconds to release the residual static electricity;
2. Connect the power adapter separately to try to power on;
3. Connect the battery separately to try to boot;
4. If conditions permit, you can plug the memory test.
Q:What is the frequency of `30 points
AC are frequency, China is 50 Hz, is in a second amplitude of 50 times.
To change this frequency, it is necessary to use some electronic components to change the current frequency.
General frequency conversion for the tributary motor speed more. So that some equipment can be stepless.
Principle, see the first floor just fine, copy the more detailed.
Q:Yaskawa inverter reported base blockade what is the reason?
This is the base block command, when the external input block command signal, the inverter will appear this code, the code appears, the motor will be free to rotate, does not affect the use.
Q:Quartet of the TA, TC terminals have positive and negative?
This can not be said to be positive and negative, should be called the public, TA, is the common.
Q:Laptop computer about electricity no electricity, is the power adapter problem?
"The adapter light is bright" is just a matter of line between the AC power supply and the power adapter, and the power adapter to the computer that line may be bad or the computer interface is not good. Practice shows that the adapter's computer interface where the line is most likely broken
Q:Is the laptop power adapter high temperature normal? Is there anything else?
In fact, I am also facing such a problem, but I have solved:
First: you put the battery together, together with the power adapter, 1 hour after you will feel very hot, it is estimated that you say this. Although your battery is full of electricity.
Second: the battery removed, and then use the power adapter, 1 hour after you will feel the general heat, much better than the first case.
If you follow the above operation is what I said the same situation, it shows that your power adapter is no problem, because I specifically looking for professional after-sales such a problem, and later also detected the battery, are normal, so if you want is not very Hot, you can remove the battery.
Q:What is the characteristic of the variable pole speed method?
Third, cascade speed control method
Cascade speed regulation refers to the winding motor in the rotor loop into the adjustable additional potential to change the motor slip, to speed control purposes. Most of the slip power is absorbed by the additional potential in series, and the additional device is used to return the absorbed slip power to the grid or to convert the energy. According to the slip power absorption and utilization, cascade speed can be divided into motor cascade speed, mechanical cascade speed control and thyristor cascade speed form, the use of thyristor cascade speed, which features: The process of the slip loss back to the grid or production machinery, the higher efficiency; device capacity and speed range is proportional to the investment province, for speed range in the rated speed of 70% -90% of the production machinery; Device failure can be switched to full speed operation, to avoid shutdown; thyristor cascade speed power factor is low, the greater the impact of harmonics. This method is suitable for use in wind turbines, water pumps and rolling mills, mine hoists, extruders.
Fourth, winding motor rotor series resistance speed control method
Winding asynchronous motor rotor series into the additional resistance, so that the motor slip increase, the motor running at a lower speed. The greater the resistance of the series, the lower the motor speed. This method is simple and easy to control, but the slip power is consumed in the form of heat. Is a level of speed, mechanical characteristics of soft.
Q:What parts of the inverter composition
The main converter are: rectifier module, inverter module, capacitor, driver board, motherboard, shell composed of these parts!
Q:My laptop can not use the power adapter, and can only use the battery, how is it ah,
Depending on your question may be the problem that the laptop's internal lines may be short-circuited
1, you can go to the video online to find the same type of machine disassemble video and then repair their own
2, get to the maintenance of the place to get on nothing
Q:380V 2 pole motor can use the inverter?
Of course, the stator winding can be connected with concentric
While enameled wire to be better, preferably 180 degrees or 155, and even dedicated enameled wire