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Mis vahe on autotransformaatoril ja eraldustrafol?

2020-08-14
Autotrafo tutvustus
AutotrafoTermin "trafo" tähistab trafot, mille primaarmähised ja sekundaarmähised asuvad samal mähisel. Struktuuri järgi saab selle jagada reguleeritava rõhu tüübiks ja fikseeritud tüübiks. Automaatne sidestus tähendab elektromagnetilist sidestust. Tavalised trafod edastavad energiat primaar- ja sekundaarmähiste elektromagnetilise sidestuse kaudu. Primaarse ja sekundaarse külje vahel puudub otsene elektriline ühendus. Autotrafo primaarsel ja sekundaarsel küljel on otsesed elektrilised ühendused. Selle madalpinge mähised See on osa kõrgepinge mähistest. Kaitsevarustust, näiteks autotrafosid, kasutatakse ka sideliinide kaitsevahendites.
Theautotrafo is a self-coupling transformer. Theautotrafo has a relatively simple structure and low cost. Theinput/output and the neutral line are shared. Thesecondary side of the transformer is part of the primary side. Theprimary and secondary sides share a winding, like one Thetwo coils that come out of the wire, the two coils use the difference between the large and small currents to cut the magnetic lines to transform the voltage. It is generally used in the boost of DC power. Theoutput and input of the transformer are directly electrically connected, and the safety performance difference.

Isolatsioonitrafo kasutuselevõtt
Isolatsioonitrafo refers to a transformer with electrical isolation between the input winding and the output winding. Theeraldustrafo is used to avoid accidentally touching the charged body at the same time. Theisolation of the transformer is to isolate the respective currents of the primary and secondary windings. In the early days, it was used in the power industry in European countries, and it was widely used in the electronics industry or industrial and mining enterprises, machine tools and mechanical equipment in general circuit control power, safety lighting and indicator lights.
Themain function of theeraldustrafo is to isolate the electrical equipment from the grid. Used in safety occasions or occasions with anti-interference requirements. There is no direct electrical connection between the electrical equipment and the power supply. Theisolation structure has many materials and high cost. In addition to changing the voltage, the input winding and output winding can be electrically isolated from each other, and the input/output and neutral line can be isolated to avoid touching the charged body at the same time (or due to insulation damage) Metal parts that may be charged) and the ground. In addition, theeraldustrafo also has a certain effect of suppressing various interferences, with filtering performance and high safety.

Thedifference between autotrafo anderaldustrafo
1. Thedifference in structure
Isolatsioonitrafo is one of the most common transformers. Its low-voltage and high-voltage winding are wound by separate coils and are not electrically connected. Theprimary and secondary sides have no direct electrical connection, and the secondary winding are not connected to the earth. .
Theprimary side and the secondary side of the autotrafoon otsene elektriühendus. Selle madalpinge mähis on osa kõrgepinge mähisest, see tähendab, et mähis on ainult üks elektriline läbipääs, ja mähise keskel asuv kraan on kõrgepinge ja madalpinge mähiste ühine punkt. .

2. Thedifference in safety factor
Usually, one wire of the AC power supply voltage we use is connected to the earth, and the other wire has a potential difference of 220V or 380V between the earth. Human contact can cause electric shock. Thesecondary high and low voltage coils of the eraldustrafo are electrically insulated from each other and are not connected to the ground. There is no potential difference between any two wires of theeraldustrafo and the ground. People will not get an electric shock if they touch any line, so it is safer. Therefore, no matter whether the secondary voltage exceeds the safe voltage value, as long as the human body does not touch the two output points of the secondary at the same time, it will not cause harm to people. This is the advantage of theeraldustrafo. But the volume is large and the cost is high.

Theautotrafosäästab osa mähistraadi materjalist, kuna kõrg- ja madalpinge mähistel on kattuvad osad, mis pole mitte ainult väikese suurusega ja madala hinnaga. Kuid selle kõrg- ja madalpinge mähised on ühendatud, isegi kui astmelülitrafo madalpinge külje väljundpinge on väga madal, kuna kahel mähisel on ühine osa, siis "põgeneb" ka primaarse kõrgepinge teisejärgulisse, mis on inimestele väga lihtne. haiget saanud.

3. Thedifference in use
Three-phaseeraldustrafos are mainly used in power systems, power loads of industrial and mining enterprises, and the power supply that requires isolation from the power grid is magnetoelectric, which is used as a power device for precision measurement and test purification (anti-interference) power supply and power grid. Isolatsioonitrafos are safe power supplies and are generally used for machine maintenance to protect, prevent lightning, and filter.

Theprimary side and the secondary side of the autotrafoon omavahel otseselt seotud. Kui liin on kahjustatud või lekib, on inimestele väga lihtne kahju tekitada. Üldiselt kasutatakse kohtades, kus ohutusnõuded on madalad, tuleb muuta ainult pinget, et pinge vastaks seadmete nõutavale pingele, kuid seadet ei saa varustada lekkekaitseseadmega ja neutraalset joont ei saa maandada.

Theworking principle of autotrafo anderaldustrafo
Autotrafo (Three Phase)


Isolatsioonitrafo (kolmefaasiline)
 

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