Dab tsi yog PT's thiab CT's siv rau?

Lawv lub npe tag nrho piav qhia lawv lub hom phiaj:

PT = Muaj peev xwm Transformer(tseem hu uaQhov Voltage Transformerlos yogVT)

CT = Tam sim no Transformer

Cia peb rhuav vim li cas lawv thiaj li thuam.

1. Muaj peev xwm Transformer (PT) / Voltage Transformer (VT)

Nws ua li cas:Kev ntsuas siabhluav taws xob.

Nws ua haujlwm li cas:Nws yog ib hom tshwj xeeb ntawm transformer uas nqis los ntawm qhov hluav taws xob siab (xws li 11,000 Volts lossis 132,000 Volts) kom qis, nyab xeeb, tsim qauvtheem nrab voltage. Feem ntau tus qauv theem nrab voltage yog110Vlos yog120V.

Analogy:Xav tias nws yog qhov tseeb, hnyav- lub luag haujlwm ntawm lub tshuab hloov pauv mus txawv tebchaws uas tso cai rau lub cuab yeej tsim rau 110V kom ntsaws rau hauv lub qhov hluav taws xob 220V yam tsis raug rhuav tshem.

Lub Hom Phiaj Tseem Ceeb:

Kev nyab xeeb:Nws hluav taws xob cais cov kab hluav taws xob siab -voltage los ntawm cov ntsuas ntsuas thiab cov neeg ua haujlwm siv lawv.

Standardization:Nws tso cai rau kev siv tus qauv, pheej yig, thiab muaj kev nyab xeeb voltmeters thiab cov khoom siv tiv thaiv uas yog txhua yam tsim los rau tib lub tswv yim voltage (xws li 120V). Lub ' meter ' yog tsuas yog scaled. Piv txwv li, yog tias PT muaj qhov sib piv ntawm 1000: 1, kev nyeem ntawv ntawm 110V ntawm lub ntsuas hluav taws xob ncaj qha mus rau 110,000V ntawm thawj kab.

Powering Protective Relays:Muab qhov ntsuas qhov ntsuas - nqes hluav taws xob qis rau cov relay uas saib xyuas qhov ua txhaum (xws li dhau-voltage lossis qis dua -voltage tej yam kev mob).

Qhov twg koj pom lawv:Txuas nyob rau hauv parallel hla lub siab -voltage circuit koj xav ntsuas.

2. Tam sim no Transformer (CT)

Nws ua li cas:Kev ntsuas siabtam sim no.

Nws ua haujlwm li cas:Nws yog "donut{0}}zoo li tus" transformer uas tau muab tso rau ib ncig ntawm tus neeg xyuas pib nqa lub siab tam sim no. Qhov siab tam sim no nyob rau hauv thawj tus neeg xyuas pib (uas tuaj yeem yog ntau txhiab tus Amps) induces ib proportionally me, standardizedtheem nrab tam sim no. Cov txheej txheem thib ob feem ntau yog tam sim no5Alos yog1A.

Analogy:Xav txog kev sim ntsuas qhov ntws ntawm tus dej loj ncaj qha. Hloov chaw, koj hloov ib qho me me, kwv yees feem ntawm tus dej mus rau hauv ib qho me me sab channel. Los ntawm kev ntsuas qhov ntws hauv cov channel me me, koj tuaj yeem suav qhov ntws ntawm tag nrho tus dej.

Lub Hom Phiaj Tseem Ceeb:

Kev nyab xeeb:Nws cais qhov siab - tam sim no Circuit Court los ntawm cov ntsuas ntsuas. Qhov thib ob sab ntawm CT yuav tsumyeej tsis qhibthaum lub hauv paus muaj tam sim no, raws li nws muaj peev xwm tsim txaus ntshai heev voltages.

Practicality:Nws tso cai rau siv cov qauv, pheej yig ammeters thiab tiv thaiv relays uas yog tag nrho cov tsim los rau tib lub tswv yim tam sim no (xws li, 5A). Lub 'meter' yog scaled. Piv txwv li, yog tias CT muaj qhov sib piv ntawm 100: 5, kev nyeem ntawv ntawm 5A ntawm lub 'meter' sib raug rau 100A ntawm thawj tus neeg xyuas pib.

Powering Protective Relays:Muab qhov ntsuas qhov ntsuas - down tam sim no lub teeb liab rau relays uas mus txawv tebchaws breakers thaum lub sij hawm txhaum (xws li overcurrent los yog luv circuits).

Qhov twg koj pom lawv:Nruab ib ncig ntawm lub siab - tam sim no tus neeg xyuas pib (tus neeg xyuas pib ua raws li ib qho - tig thawj).

Summary Table: PTs vs. CTs