Danfoss Compressor SH560A3AAP

08/28/2020

How to identify whether the gas storage tank is a simple pressure vessel

Simple pressure vessels that meet the following conditions at the same time do not need to go through the registration procedures.

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.

09/04/2020

Scientific selection of air compressor oil

Scientific selection of air compressor oil 　　 1. How is air compressor oil classified? 　　Answer: Air compressor oil is divided into reciprocating air compressor oil and rotary air compressor oil according to the structure of the compressor, each of which has three levels of light, medium and heavy load.

08/08/2020

How to prevent freezing of central air conditioning in winter

How to prevent freezing of central air conditioning in winter In winter, the temperature is getting lower and lower, even exaggeratedly saying that there is a feeling of freezing, so you should not hesitate to prepare for the cold.

01/02/2021

Global Commercial Refrigeration Compressors Market 2020 Trends, Advanced Technology, Production Analysis, Growth Factors and Forecast Overview by 2026

The study on Global Commercial Refrigeration Compressors Market, offers deep insights about the Commercial Refrigeration Compressors Market covering all the crucial aspects of theMarket. Some of the important aspects analyzed in the reportincludesMarket 器2䀀
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06/29/2020

What is the cause of compressor pipeline vibration

08/31/2020

Agent, why is your air compressor selling at a high price

Although almost everyone likes high prices in order to get more profits, many air compressor agents have gone into a misunderstanding in the process of realizing them. People who can achieve high prices by playing a good hand Rarely.

04/25/2025

Cooling Tower Troubleshooting and Solutions

Cooling towers are commonly used equipment in industry, air conditioning and other fields, and are used to remove the large amounts of heat generated during the production process.

07/11/2020

Screw air compressor structure

Screw air compressor structure Screw air compressor structure diagram Internal mechanism diagram of screw air compressor Cross-section picture of screw compression structure

06/28/2020

In a few words, make it clear how strong the Hitachi central air-conditioning compressor is

In a few words, make it clear how strong the Hitachi central air-conditioning compressor is After seeing many posts on the compressors of Science Hitachi, various parameters and terminology simply summarize the following points