Chint VFD Frequency Converter NVF2-15/PS4
Type: VFD
Brand: Chint
Type: VFD
Brand: Chint
Type: VFD
Brand: Chint
Chint VFD Frequency Converter NVF2-15/PS4
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According to the reversible principle of DC motors, DC motors are divided into DC motors and DC generators.
08/15/2020
Nowadays, in order to prevent the goods from selling well and causing economic losses, more and more businesses are using Xuzhou refrigeration equipment to store excess goods or sell them in anti-seasonal times.
08/02/2022
Hydraulic motor is a conversion element that converts the pressure energy of liquid into rotary motion machinery.
06/20/2020
What are the causes of air conditioning trip 1. The contradiction between the rated current of the air conditioner and the current carrying capacity of the wire. Here are two formulas involved: ①The rated current of air conditioner I=P÷U ÷power factor, the power remains unchanged, the smaller the voltage, the greater the current required. ② The current carrying capacity of the wire I=U÷R, the voltage is proportional to the current. So when the power supply voltage is normal, we must consider the line voltage drop. The longer the line, the greater the resistance, the greater the voltage drop, and the smaller the output current at the end. However, because the power of the load remains unchanged, the voltage becomes smaller, and the current that needs to be output will be larger. At this time, the wire is forced to overload, and the time will cause heating, and eventually cause the tripping of the open circuit. Some friends said that the heat of the wire will not cause the tripping of the circuit breaker. In fact, the manufacturer of the air switch has made it clear in the relevant manuals that the heat of the wire will cause the air switch to trip. Because the wire heats up, the crimp terminal will also heat up, and the resistance will become larger and larger. The larger the resistance, the greater the current consumption, and the hotter it will be, a vicious cycle. 2. Leakage During the daily maintenance work, we will encounter the situation that the air circuit trips due to the leakage of electricity. At least I have not experienced it once or twice. Regardless of the leakage of the neutral line or the leakage of the live line, a long time will cause the circuit breaker to trip. Why does the electric leakage cause the MCB to trip? There are two situations. ① Good grounding. At the beginning, the leakage current was not large, and as time went by, the leakage current became larger and larger, and eventually evolved into a short circuit to ground, unable to close. ②There is no ground wire. If the equipment is not connected to the protective ground, when the wire leaks to the equipment, it is equivalent to adding a large shunt resistance. Like this problem, if the air conditioner does not have a ground wire, when the wire leaks to the air conditioner, the air conditioner is a very large shunt resistor and will consume a lot of current. Eventually, the wire will heat up or trip open. How to determine whether the trip caused by the above two aspects can be done with a clamp ammeter. ① Measure the voltage at the input and output to see if there is a significant change in voltage drop. ②Measure whether the output current exceeds the standard. So my suggestion is: first measure the supply voltage to see if it is within the allowable fluctuation range. Then measure the current to see if it exceeds the rated ampacity of the wire. Finally, check the data one by one according to the measured data to find out the reason.
06/14/2020
The electronic expansion valve is a throttling element that can enter the refrigerant flow of the refrigeration device according to a preset procedure. In some occasions where the load changes drastically or the operating range is wide, the traditional th 器2 䀀 ᅵ皥 䖒皦즠Ʋ煔क़ 㲈Ʋ 䌁皦 ᮔDž༬皧煞क़Ѐ 呄ᠾ鹨់༹皧 ࠄ 00령ꐱ댁珵뛐珵Љ 䕄ྦ 뤂ᐱ뚜珵 ᴴᏩ呄ᠾ퍘ᒥ 鹨់ᩄ ꋔྦ 瑉浥 巠皱㙲皦抐皱 巠皱 ੨皦柘皱 ᅵ皥 ب 巠皱㙲皦忈皱 ੨皦柘皱 즠Ʋǜ 勁皦즠Ʋب ǜ V / 펔B䌁皦 ᮔDž '鱤džၜ먢䇨珵呈ᠾ뤂ᐱ ⿇⬿먲僧ᐱ㥲ᐲ�僬㣢ᐲ ᠾ 랖僧߀ 識 �僬㣢ᐲ 臆S㥲ᐲ ᬄğ 識 理艏S杴 識杴 㥲ᐲ
08/20/2020
In the hot and hot summer, the frequency of use of industrial chillers is the highest in a year, and summer is also the season when industrial chillers have the most frequent high temperature alarms.
08/19/2020
The cold chain has been naturally pushed to the forefront of the storm and has become a hot topic in the food logistics industry. The construction of a cold chain system is of great significance.
09/21/2020
The components of a piston air compressor that need to be cooled with water include cylinders, intercoolers, aftercoolers, and lubricating oil coolers.
09/02/2020
Centrifuge and screw air compressor are currently the air compressors with a high market share. Today, I will tell you what are the differences between centrifuges and screw air compressors. I hope this article can help you.
06/14/2020
Principle of magnetic suspension refrigeration compressor With the development of electronic technology, control engineering, signal processing components, electromagnetic theory and new electromagnetic materials and rotor dynamics, magnetic levitation t ﰸ2 䀀 ᅵ皥 䖒皦즠Ʋ娼ི 㲈Ʋ 䌁皦隆 ᮔDž༬皧婆ིЀ 呄ᠾ鹨់༹皧 ࠄ 00븹먱댁珵理뛐珵Љ 䕄ྦ 뤂ᐱ變뚜珵 ᴴᏩ呄ᠾ퍘ᒥ 鹨់變ᩄ ꋔྦ 瑉浥 巠皱㙲皦抐皱 巠皱 ੨皦柘皱 ᅵ皥 ب 巠皱㙲皦忈皱 ੨皦柘皱 즠Ʋǜ 勁皦즠Ʋب ǜ V / 펔B䌁皦 ᮔDž '鱤džቜ먢䇨珵呈ᠾ뤂ᐱ ⬿먲僧ᐱ靖㥲ᐲ�僬㣢ᐲ ᠾ 靖랖僧Ҏ ﯼ靖 �僬㣢ᐲ 臆S㥲ᐲ ᬄğ ﯼ戴 ﯤ艏S練