1.Higher torque in low speed 2.More smooth & stable running no resonance 3.Low temperature rise, higher effeciency
BPT series frequency conversion speed regulator is your best choice for flux control air fan, water pump and compressor. This product can meet all kinds of demands, operation modes and complete protection functions.
Features: 1 Advanced space voltage vector control technology, much better than traditional wave control technology: 1.1 Higher torque in low speed; 1.2 More smooth & stable running, without resonance; 1.3 Low temperature rise, higher effeciency. 2. Perfect protection system design Special short protection technology can assure release when short and earth(ground) fault happened. 3. Long longevity The max. Temperature rise is 20º C that can prolong the service life.
Working condition Upper limit of ambient temperature is no more than +50º C; The relative humidity is no more than 85 percent. The height above sea level is no more than 2000m; It should be placed on an indoor place without obvious shake and impact, without fire and explosive dangers and the vertical gradient is no more than 5º ; There must be no conductive dust and corrosive gas.
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:380V motor addition to the inverter, but also how to change its speed?
Rotary motor rotor series resistance adjustable speed.
4. Change the slip electromagnetic speed (slip motor)
Q:Lenovo laptop power adapter side of the feet which is positive
Very simple, look carefully on the power there is a symbol on the map (relatively small, carefully looking for all the regular power above the standard), as I shown below is the positive external, most of the power is like this , If the sign on the icon is anti, that is connected to the center of the black point is negative, that is negative inside the positive. This figure is also very intuitive.
Q:What are the types of power adapter used in notebooks?
Notebook function is limited, such as power requirements of only 50-70 watts (W). In recent years, power requirements have risen above 100 W, but the expectations for weight and size have not improved accordingly. In addition, the need to meet the low standby power performance in the specification, external power (EPS) efficiency requirements and IEC1000-3-2 harmonic power requirements above 75 W make this challenge more difficult to deal with. This article explores new trends that enable power supply manufacturers to address these challenges and provide alternative solutions to choose from.
Q:Notebook power adapter on how to look at power
Power and work voltage power adapter will be identified, you only need to distinguish between input and output on the line, the input refers to the utility power supply support, and now are generally 100V ~ 240V, so you can use in most parts of the world,
Q: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;
Q:Who knows how the inverter is calculated?
There is no pole in the inverter, the electrode can be polarized, the greater the number of poles of the motor the slower the speed, please refer to.
Q:What is the adapter?
Easy Alliance Electronics (China) Co., Ltd. (eNetwork) currently has a different series, different types of adapters, original authentic, and sold at competitive prices.
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:How to choose the inverter
I was doing the inverter, you choose the words, as long as 75KW can be selected, huh, huh, because the 1440 speed is fixed, the connection can be set in the inverter itself,
Q:Laptop adapter heat
In fact, as long as the power adapter temperature is within the design range, that is, the temperature in the normal range, the general is not dangerous!
So why is the power supply hot? What kind of temperature range is the normal range? Switching power supply conversion efficiency can only reach 75% -85% or so. The answer is here. Switching power supply conversion efficiency is high enough, it is still difficult to find a better way to convert.
Switching power supply in the voltage conversion, a part of the energy loss, in addition to a small part of the loss in the form of waves, the majority of the way out of the heat. Switching power supply power is missing, the loss of energy is also missing, the power of the heat is also large. This is why the desktop power supply to add a fan for cooling reasons. We may wish to count, a 100W switching power supply, in the use of how much energy loss in the above!