Kuaj roj transformer transformer cuam tshuamKev Tshuaj Xyuas TebthiabKuajTxhawm rau ntsuas nws cov hluav taws xob, tshuaj lom neeg, thiab lub zog lub cev .}} qhov tseeb ntawm txoj kev:
1. Kev Nyab Xeeb Ua Ntej
De-energize lub transformer lossis ua raws cov kev nyab xeeb nruj nruj rau cov khoom sib xyaw .
Siv PPE (looj tes, goggles) .
Xyuas kom muaj kev ua hluav taws kub ua kom zoo .
2. Daim Ntawv Kuaj Haujlwm (Ua Ntej)
Kev Ntsuam Xyuas Pom:
Xim:Ntshiab daj daj daj=zoo .}} {.
Clarity:Cloudiness=noo .}}} sludge / paug {}}}
Tsw:Hlawv cov ntxhiab tsw ntxhiab=overheating . acid tsw {}.
Roj qib:Txheeb xyuas gauges; tsawg theem qhia kom txi lossis roj poob .
3. Kuaj (qhov tseem ceeb)
Kuaj:
Siv cov raj mis huv si, qhuav, kaw (iav / pe) .
Kos los ntawm lub hauv qab cov dej valve tom qab yaug cov kab .
Zam kev noo noo / Cua Raug Raug (Sau lub raj mis ua tiav) .
Cov Kev Ntsuam Xyuas Tseem Ceeb:
| Xeem ntawv | Lub hom phiaj | Zoo tagnrho ntau |
|---|---|---|
| Dielectric lub zog | Ntsuas kev puas tsuaj voltage (KV) - qhia tias rwb thaiv tsev zoo . | >30 kV (ASTM D877) / >50 kv (iec) |
| Yauv cov ntsiab lus | Dej ppm - tseem ceeb rau rwb thaiv tsev & oxidation . | <20–35 ppm (depends on voltage) |
| Acidity (NeutRalization Tus naj npawb) | Ziab (mg koh / g) - kuaj cov laus / oxidation . | <0.1–0.2 mg KOH/g |
| Deatolved Roj Kev Tshawb Xyuas (DGA) | Qhia txog roj av (h₂, c₂h₂, thiab lwm yam .}}, overheating) {}} | [Roj sib piv] + [abhute txwv] |
| Interfacial nro (IFt) | Rhiab heev rau cov tsis huv / sludge (mn / m) . | >25-40 mn / m (tshiab: 40-50) |
| Lub zog muaj | Kev Ntsuas Dielectric Poob - qhia txog cov kab mob sib kis . | <0.5% at 20°C |
| Viscosity & Flash taw tes | Kuaj pom kev paug lossis thermal yuam kev . | Flash point: >140 degree |
4. Kev Txhais Lus & Kev Ua Haujlwm
Piv rau Baseline:Siv tus transformer thawj qhov kev ntsuas roj thaum pib siv rau kev siv .
Qauv:Xa mus rau IEEE C57 {{. 106, IEC 60422, lossis ASTM cov qauv.
DGA kev kuaj mob: Use Duval Triangle/Rogers Ratios to identify fault types (e.g., C₂H₂ >1 ppm qhia tias arcing) .
Kev kho:
Txais Kev Txais:Tshem ya kom noo / cov khib nyiab (cov khib nyiab (pom kev, degassing) .
Rov qab ua reclamation:Restore tshuaj lom neeg (av nplaum kho) .
Hloov:Yuav tsum yog tias cov roj tseem tshaj li khaws cia .
5. Kuaj zaus
Cov niaj hnub:Txhua xyoo rau cov hloov pauv tseem ceeb .
Tom qab yuam kev:Tom qab overloads, xob laim, lossis hloov cov xwm txheej .
DGA: Every 6–12 months for transformers >69 kv .
Cov cuab yeej xav tau
Teb: Roj ntsuas cov khoom siv, pom iav, koob txhaj tshuaj rau kev ntsuam xyuas sai .
Lab: DGA tus ntsuas tub luam, DAFULITE SCHERER, KARL FISCHER SCRATOR (HMOOV XUB).
