Roj-Immersed Transformer: Ua ntej-Operation Checklist

I. Visual & Sealing Inspection
Txheeb xyuas cov qauv kev ncaj ncees thiab sealing:

Xyuas bushings, tank, radiators, thiab conservator rau kev puas tsuaj, xau, los yog corrosion.

Xyuas kom meej tias daim ntawv teev npe / theem cim tau pom tau.

Paub meej tias desiccant yog xiav thiab roj khob tau ntim kom zoo.

Validate roj theem ntais qhov kub thiab txias nkhaus; roj yuav tsum meej.

II. Kev Tshawb Fawb Kev Nyab Xeeb Hluav Taws Xob
Ua cov tshuaj xyuas hluav taws xob tseem ceeb:

Kuaj rwb thaiv tsev tiv thaiv siv megohmmeter nyob rau hauv ib theem: HV- av, LV- av, ces HV-LV.

Xyuas kom cov av tiv thaiv tsawg dua los yog sib npaug rau 0.1Ω thiab cov tub ntxhais yog ib qho -point grounded.

III. Roj & Txias System Check
Paub meej txog kev npaj ua haujlwm:

Xyuas kom tag nrho cov roj li qub tau qhib siab rau kev ncig.

Txheeb xyuas tus kais hloov txoj hauj lwm thiab roj relay roj theem.

Paub meej tias lub siab nyem valve yog unobstructed.

IV. Cov cai tswj xyuas tseem ceeb
Ua raws li kev saib xyuas tseem ceeb:

Siv tib yam - hom roj rau kev ntxiv.

Replace desiccant when >2/3 khob hmoov nplej; kaw throttle thaum hloov.

Tswj kev sib txuas hauv av; hais txog corrosion tam sim ntawd.