60 Kw Solar Inverter

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FAQ

Speed of 3000 r / min three-phase motor how to change its speed

Voltage regulator, variable pole speed, the best inverter speed. The

Ordinary 4-pole motor Under the control of the inverter, the higher the speed, the higher the power or the slower the power

It is wrong; the higher the speed is not equal to the greater the power;

How do I select a drive? Which brand is better

???4, when the inverter is used to control several motors in parallel, be sure to consider the inverter to the motor cable length of the sum of the inverter in the allowable range. If you exceed the specified value, to enlarge one or two steps to select the inverter. In addition, in this case, the inverter control mode can only be V / F control mode, and the inverter can not protect the motor over-current, overload protection, this time in each motor on the fuse to achieve protection. ????5, for some special applications, such as high ambient temperature, high switching frequency, high altitude, etc., this time will cause the inverter derating, the inverter need to enlarge a file selection. ????6, the use of inverter control high-speed motor, due to high-speed motor reactance small, high harmonics also increase the output current value. Therefore, when selecting a frequency converter for a high-speed motor, it should be slightly larger than the inverter of an ordinary motor. ????7, the inverter for the variable pole motor, should pay full attention to select the inverter capacity, so that the maximum rated current in the inverter rated output current below. In addition, in the operation of the number of pole conversion, you should first stop the motor work, otherwise it will cause the motor idling, bad will cause damage to the inverter.

What is the meaning of the bipolar polarity in the inverter ah There is a +10V signal input is a -10V What is the meaning of ah?

Bipolar input is positive and negative. Bipolar input is generally used to directly through the external reference or potentiometer to achieve the motor forward and reverse switching, without having to switch all the way to switch the signal (switch).

Laptop power adapter problem

Third, since the book is very old, the original factory may not have such a transformer spare parts, then a reasonable idea is to let this book off, rather than the provincial money to take their own little life joke, a notebook and then expensive It will not be more expensive than your life, the money is very unreasonable province. A notebook with a decade is also completely considered the best use of the matter, you are stingy stingy Ye Hao, there are emotional sustenance worth mentioning, it should be eliminated or out of it.

Taian inverter 3.7KW 380V with 4.0KW 2 pole motor 18000 to 300HZ can it?

With green wave Jie can experience to judge, there may be two possibilities: First, the inverter power selected small. Bipolar motor, not a four-pole motor, the inverter is designed according to the four-pole motor model, so in the inverter selection, can not only look at the power, but also the rated current of the motor;

Laptop power adapter in the ring is how is it?

Notebook power adapter generally use the switch circuit, the output 12V DC power supply, as the notebook DC / DC converter circuit power supply; In the switch circuit, the most prone to "creak" sound is the switch transformer coil (ringing), or high-voltage filter capacitor (fire);

What is the common COM point of the PLC and the inverter? Is it positive?

Plc is divided into two kinds of transistor output and relay output, com side may be connected to the high level may also be connected to the low level, the general input com port then low, the output port com mouth high, specifically what to take See the data sheet. Inverter is the same, the inverter has 24v com side and 10v com side, can not be connected together, com side generally low.