Danfoss Compressor SZ147A6CBG

06/20/2020

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.

08/13/2020

How to judge the car air conditioner expansion valve ice block What are the symptoms

If there is moisture in the system, icing and blockage will occur at the expansion valve when the air conditioner is in refrigeration. After the blockage, the air conditioner will not be cooled.

12/12/2024

Mitsubishi Vs. Panasonic Air Conditioners

Summer is so difficult to spend that people without the air conditioner are like fish out of water. It’s critical to choose a good air conditioner.

12/25/2024

Squirrel Cage Induction Motor Vs Wound Rotor Induction Motor: Rotor Structure, Pros and Cons

The three-phase induction motor consists of two basic parts: the stator and the rotor.

09/05/2020

What is the composition of the often said air compressor station

For air compressors, especially screw air compressors, they cannot be used directly. It is also necessary to establish an air compressor station with corresponding post-processing equipment.

09/07/2020

Two working methods for air filter manufacturers to reduce air pollution

Two working methods for air filter manufacturers to reduce air pollution 　　1. Air filter manufacturer: air filter 　　Air Filter Manufacturers Air filters are equipment developed based on air pollution. It can effectively reduce air pollution, but it must be known that its purification range is relatively small. Therefore, users should pay attention to actual application requirements when using them and purchase appropriate equipment.

08/11/2020

Technology Refrigeration equipment system operation analysis and energy saving measures introduction

1.Economic analysis of refrigeration equipment system operation<br></br> The amount of cold produced by refrigeration equipment is directly related to the operating conditions of the system.

06/29/2020

What is the cause of compressor pipeline vibration

10/25/2023

Mini Split vs. Window AC: Which Cooling System is Right for You?

Choosing the right cooling system for your home or office is essential for creating a comfortable and pleasant environment. Two popular options are mini-split air conditioners and window AC units. Each system has its unique advantages and considerations.

08/20/2020

Popularization of food cold storage and precautions for use

With the development of science and technology, people's living standards are improving day by day, and more and more types of food are used. It can be described as a dazzling array of items.