SIEMENS Servo Motor 1FT5102-0AA71-1-Z
Type: Servo Motor
Brand: SIEMENS Servo Motor
Type: Servo Motor
Brand: SIEMENS Servo Motor
Type: Servo Motor
Brand: SIEMENS Servo Motor
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06/20/2020
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.
08/17/2020
1. Water magnetization treatment technology Using the magnetic field effect to treat water is called magnetization treatment of water.
06/14/2020
Analysis of the current status of refrigeration compressor technology development
04/25/2022
Set power line surge protection device at the entrance of the line into the building, the interface of the lightning protection area and the place close to the protected equipment.
08/11/2020
1. What is a static pressure box?<br></br> Static pressure box, also known as plenum chamber, is a large space box connected to the air outlet. The flow velocity of the air flow in this space decreases to close to zero, the dynamic pressure is converted into static pressure
07/11/2020
Working flow chart of screw air compressor In the first step, the air compressor sucks the surrounding air through the air filter to make it enter the compression host.
09/01/2021
The crankshaft position sensor (CKPS) is a magnetic induction sensor with 58 slots on the crankshaft
01/10/2021
The fan is running, but the compressor is not running Analysis and detection: Analysis of the cause of the failure may be the failure of the compressor starting capacitor, causing damage to the compressor winding or compressor jamming; after cutting 器2 䀀 ᅵ皥 䖒皦즠Ʋ奌ི 㲈Ʋ 䌁皦 ᮔDž༬皧奖ིЀ 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
09/06/2022
Synchronous Reluctance Motor (referred to as SynRM) is a new type of AC electric motor that forms a closed loop along the path of least magnetic reluctance
05/23/2023
Every summer people will think of using air conditioners to help lower the temperature. This will allow them to live better and more comfortably.