Danfoss Compressor SZ148A7PV

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.

08/11/2020

Want to clean the air conditioner condenser Come here i teach you

As for the core component of the air conditioner—the condenser, do you know how to clean it? Today, the editor will teach you how to clean the condenser of the okmarts.com air conditioner.

06/14/2020

Advantages of cascade cryogenic refrigeration system industrial chillers

Advantages of cascade cryogenic refrigeration system industrial chillers The cascade refrigeration system is a low-temperature refrigeration system that uses more than two refrigerants and combines them with a heat exchanger (condensation evaporator) in ﰸ2䀀
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02/24/2021

What to do if Haier refrigerator doesn't cool

In the process of using home appliances, there will be some situations. I believe many people have encountered that the refrigerator at home is not cooling. What will you do when you encounter this situation? Let’s take a look at Haier with the editor. What to do if the refrigerator is not cooling, for your reference.

08/29/2020

SPK Fluid reliable compressed air escort

SPK Fluids is a global supplier that provides highly specialized and engineered solutions, with branches in 35 countries and operations in more than 150 countries around the world.

08/19/2020

What should I do with the chiller at the end of the year

After a year of non-stop operation of the chiller, more or less debris will be generated, and it will be attached to the evaporator, condenser, cooling tower water system or filter, and the refrigerant oil will also be contaminated,

06/29/2020

How the compressor works

07/16/2022

What is a Gear Pump

Gear pump is a rotary pump that transfers liquid or pressurizes it relying on the change and movement of the working volume formed between the pump cylinder and the meshing gear.

10/26/2021

Use of Baumer Encoder HMG11 and HOG10 in Iron and Steel Smelting Industry

Inside the noisy iron and steel smelting workshop, sparks flare and machines roar, crane weighing hundreds of tons slowly moves blast furnaces filled with molten iron from one station to the next.

09/22/2020

Characteristics and trends of assembled centrifugal compressors

I. Introduction 　　 Assembled centrifugal compressor is also called assembling integral gear speed-increasing centrifugal compressor, and it has developed rapidly in the world in recent years.