Kompass Vane Pump 150T+150T-94+94-LR
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06/19/2020
What are the causes of air conditioning trip
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.
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09/04/2020
The difference between ordinary asynchronous motor and variable frequency motor
1. Ordinary asynchronous motors are designed according to constant frequency and constant voltage, which cannot fully meet the requirements of variable frequency speed regulation
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01/10/2021
The importance and design application of hotel fresh air system
With people's emphasis on environmental protection and the continuous improvement of air quality requirements, the fresh air system has become a hot word that appears frequently. As a place for people to relax and entertain, the requirements for the decor 器2 䀀 ᅵ皥 䖒皦즠Ʋ㎄ᰙ 㲈Ʋ 䌁皦 ᮔDž༬皧㎎ᰙЀ 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Ծ 識 �僬㣢ᐲ 臆S㥲ᐲ ᬄğ 識 理艏S杴 識杴 㥲ᐲ
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09/04/2020
Analysis of Medical Pharmaceutical Mixer with Air Compressor
The medical mixer is a device for forced convection and homogeneous mixing of liquid and gaseous media. As early as before the industrial revolution, people were already using various mixers.
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07/04/2023
Don't Sweat It: How to Troubleshoot and Fix an AC Blowing Warm Air
When the weather gets hot, there's nothing more frustrating than an air conditioning unit that blows warm air. Not only is it uncomfortable, but it can also be a sign of a more serious problem with your AC system.
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08/06/2020
How to distinguish the authenticity of the compressor of the antifreeze chiller
The familiar "pump" is a mechanical device that can increase potential energy. For example, a water pump mainly pumps water from a low position to a high position.
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06/20/2020
Refrigeration, Air Conditioning Compressors: Reciprocating, Rotary, Screw, Centrifugal, Scroll
What is Refrigeration Compressor The compressors are one of the most important parts of the refrigeration cycle. The compressor compresses the refrigerant, which flows to the condenser, where it gets cooled. It then moves to the expansion valve, and the evaporator and it is finally sucked by the compressor again. For the proper functioning of the refrigeration cycle, the refrigerant must be compressed to the pressure corresponding to the saturation temperature higher than the temperature of the naturally available air or water. It is the crucial function that is performed by the compressor. Compression of the refrigerant to the suitable pressure ensures its proper condensation and circulation throughout the cycle. The capacity of the refrigeration or air conditioning depends entirely on the capacity of the compressor.<img src="{{media url="422C8FF7C729C6E9A7416FCA7C2EB508849153E1_large.jpg"}}" alt="" />
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08/11/2020
The name of each part of the cold storage
Compressor: It acts to compress and drive the refrigerant in the refrigerant circuit. The compressor extracts the refrigerant from the low-pressure zone, compresses it, and sends it to the high-pressure zone for cooling and condensation.
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07/14/2023
Troubleshooting a Refrigerator Compressor Running But Not Cooling: A Comprehensive Guide
The refrigerator is an essential appliance in every home, keeping our perishable food items fresh and safe for consumption. However, when the refrigerator compressor is running but the refrigerator is not cooling
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02/29/2024
A Guide to Fresh Air Ventilation System: Working Principle, Functions & Types
Fresh air ventilation system, also known as "house breathing system", is a type of indoor exhausting and ventilation system. It can discharge the dirty indoor air to the outside while also pulling fresh outdoor air into the room.