Schneider Sensor XS630BLPAM12

08/25/2020

When you encounter the new crown virus in summer, please keep this air-conditioning instruction

As the weather gets hotter, it seems that the day to turn on the air conditioner and eat watermelon has arrived. But now that the epidemic prevention and control cannot be relaxed, can the air conditioner be turned on?

07/30/2021

Where will Computer Numerical Control Machines Go?

At present, the development of Computer Numerical Control (CNC) machines with each passing day, characteristics of high-speed

08/20/2020

Taboos for installing air conditioning and refrigeration pipes

Air-conditioning refrigeration pipes are used as auxiliary equipment in air-conditioning installation, but their importance cannot be ignored. If all relevant components have been

06/14/2020

Danfoss cocuses on providing energy efficient, sustainable and smart refrigeration compressors for a varied range of commercial applications such as cold rooms

08/21/2020

How should centralized air conditioners be used during epidemic prevention and control

1. Before using the centralized air-conditioning ventilation system, you should understand the type of the centralized air-conditioning ventilation system, the air supply range, and the air intake of the fresh air.

08/07/2020

High pressure failure of chiller and its treatment measures

High pressure failure of chiller and its treatment measures<br></br> Recently, many micro friends asked the editor about the causes of the high-pressure failure of the chiller. The editor recently reviewed information and sorted out some relevant measuresŒﰨ2䀀湠疌VǜV
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02/01/2023

What is Gear Ratio?

Gear ratio, i.e., the reduction ratio of the reducer, refers to the ratio of the instantaneous input speed to the output speed in the reduction mechanism, and is represented by the symbol "i".

07/02/2020

Meiyoule compressor MTZ-100 latest promotion

Meiyoule compressor MTZ-100 latest promotion Product Features of MYO100 Compressor: 1. The design plan of the US Youle compressor is environmentally friendly, and the series compressors can run smoothly and reliably. 2. The high-performance standard bearings and motors of Meyer compressors can adapt to the use of new chlorine-free refrigerants.

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.

09/09/2020

The influence of machining on fatigue life

The residual compressive stress introduced by shot blasting/shot peening is a percentage of the final tensile stress strength, and this ratio increases as the strength/hardness of the part material itself increases. High-strength/hardness metals are more brittle and more sensitive to surface defects. Shot blasting/shot peening will allow these high-strength metals to be used in fatigue-prone working conditions. Aircraft landing gear is usually designed with a fatigue strength of 300 ksi (2068 MPa), combined with shot blasting/shot peening.