Chii chinonzi E-shield?
Electrostatic shield itete isina-magnetic conductive sheet. Nhoo inogona kuva yemhangura kana aluminium. Iri pepa rakatetepa rinoenda pakati pe transformer's primary and secondary windings. Iyo shiti mune yega yega coil inobatana pamwe chete nekondukita imwe inosungirira kune transformer chassis.
Chii chinoitwa neE-shield muma transformer?
E-nhovo dzinodzosera zvinokuvadza voltage zvinokanganisa kure ne transformer's coils uye emagetsi anonzwa mumagetsi masisitimu. Izvi zvinodzivirira transformer uye system yakabatana nayo.
Ngatitarisei izvi zvakadzama tichitanga nezvinodzivirirwa neE-shields.
Attenuation
Maseketi mazhinji emazuva ano emagetsi ari pasi penguva pfupi spikes uye modhi ruzha. E-yakadzika nhovo inorerutsa (inoderedza) kukanganisa uku.
Mufananidzo uri pamusoro kuruboshwe unoratidza yakajairwa yenguva pfupi voltage spike. Rudzi urwu rwekuwedzera kwakapinza kwemagetsi emagetsi anobva kumidziyo yehofisi yakajairika semakomputa kana mafotokopi. Inverters zvakare ndiyo yakajairika sosi yenguva pfupi spikes. Mufananidzo uri kurudyi unoratidza muenzaniso wemodhiyo ruzha munharaunda yemagetsi. Mode ruzha runowanikwa mumaseketi emagetsi. Zvisina kunaka tambo masisitimu ane isina kufanira tambo yekudzivirira kazhinji inotambura nemodhiyo ruzha.
Zvino ngatitarisei kuti E-shield inobata sei nekukanganisika uku.
Capacitive Coupling
Iyo yakadzika E-nhoo inoderedza capacitive coupling pakati pekutanga uye yechipiri mamhepo. Panzvimbo pekubatana neyechipiri mhepo inomonereka, yekutanga mhepo vanoroora neE-shield. Iyo yakadzika E-shield inopa yakaderera impedance nzira yekuenda pasi. Kuvhiringika kwemagetsi kunodzoserwa kure kubva kumhepo yechipiri. Izvi zvinoshandawo kubva kune imwe mugumo we transformer (yechipiri kusvika yekutanga).
Transient spikes uye modhi ruzha zvinogona kukuvadza ma transformer uye zvimwe zvigadzirwa zvemagetsi. Electrostatic shield pakati pe high voltage uye low voltage coils inoderedza njodzi dzakadai. Iyo yakakosha kutarisisa kana uchipa simba kune sensitive electronics.
Mienzaniso yeTransformers Anoshandisa E-shield
Solar & Mhepo Transformers
Harmonic kukanganisa uye kuchinjika kwakakosha kubva kune solar inverters kunoendeswa kune utility grid. Uku kuvhiringika kwemagetsi kunogadzira mhedzisiro-senge mhedzisiro muHV inotenderera ichidyisa grid. Transient overvoltage spikes padivi rekushandisa anogona zvakare kupfuudza kune inverter. Izvi zviitiko zve overvoltage zvinogona kukuvadza inverter's sensitive components. E-nhoo inopa dziviriro kune ese ari maviri transformer, grid, uye inverter.
Dzidza zvakawanda nezve solar transformer saizi uye dhizaini zvinodiwa.
Dhiraivha Isolation Transformers
Dhiraivha yekuzviparadzanisa inoshandura inovakwa kuti imirire yakakwira frequency voltage kukanganisa (harmonics). Kuvhiringika kwakadaro kunokonzerwa nemidziyo yakaita semotor drive (kana VFDs). Saka izwi“drive”muzita. Pamusoro peharmonics, madhiraivha emota anogona zvakare kuunza kumwe kuvhiringika kwemagetsi (senge modhi ruzha). Apa ndipo panopinda E-shield. Dhiraivha yekuzviparadzanisa inoshandura inosanganisira inokwana imwe E-shield pakati peHV neLV coils. Nhoo dzakawanda dzinogona kushandiswa zvakare. E-nhoo inogona kuiswa pakati pemakoiri emukati uye core nhengo zvakare.
Zvishandiso zvine mhirizhonga yemagetsi (senge spikes yenguva pfupi uye modhi ruzha) kubatsirwa kubva kune transformer ine E-shield. E-shields haidhure, uye inopa kudzoka kwakakosha pakudyara uko nyaya dzemhando yemagetsi dziri kutyisidzira.
Nguva yekutumira: Aug-08-2024