Transformer pre-commissioning tests xyuas kom meej tias lub transformer haum rau kev pab ua ntej nws yuav energized. Cov kev ntsuam xyuas no pab txheeb xyuas cov teeb meem lossis qhov tsis raug uas tuaj yeem tshwm sim, yog li lawv tuaj yeem daws tau ua ntej lub tshuab hloov pauv tau muab tso rau hauv kev ua haujlwm. Ntawm no yog cov ncauj lus kom ntxaws transformer pre-commissioning xeem nrog cov nqi tshwj xeeb:
Kev kuaj hluav taws xob
1. Winding Resistance Test: Ntsuas winding resistance kom ntseeg tau tias kev sib txuas raug.
- Test voltage: 1-10V DC
- Kev kam rau siab: ± 1% ntawm qhov ntsuas tsis kam
Peb muaj cov qauv sib txawv ntawm transformer winding resistance testers, los ntawm 10A txog 100A, ib theem thiab peb theem, xaiv.
2. Insulation Resistance Test: Txheeb xyuas qhov kev ruaj ntseg ntawm rwb thaiv tsev.
- Test voltage: 500-1000V DC
- Yam tsawg kawg nkaus kuj: 100 ΜΩ (megohms)
BC2030 rwb thaiv tsev tiv thaiv tester tuaj yeem ua qhov kev sim rau transformer. Nws tuaj yeem tso saib PI & DAR ncaj qha.
3. Polarity Test: Paub meej tias yog theem ua ntu zus.
- Test voltage: 100-400V AC
4. Ratio Test: Txheeb xyuas qhov hloov pauv hloov pauv.
- Test voltage: 100-400V AC
- kam rau ua: ±0.5% ntawm qhov ntsuas piv
BBC-HI transformer tig ratio tester tuaj yeem ua qhov ntsuas piv thiab polarity test, nws kuj tseem tuaj yeem kuaj cov pab pawg yeej ntawm transformer ncaj qha.
5. No-Load Loss Test: Ntsuas transformer poob thaum tsis muaj load.
- Test voltage: Rated voltage
- Kev poob siab tshaj plaws: Raws li cov chaw tsim khoom tshwj xeeb
RLS-H transformer muaj peev xwm & Tsis muaj-load poob tester tuaj yeem kuaj qhov no, nws yuav tsum tau sib phim nrog cov tswj hluav taws xob thaum kuaj tsis muaj kev ntsuas.
Kev Ntsuas Dielectric
1. Dielectric Strength Test: Tshawb xyuas lub zog rwb thaiv tsev.
- Test voltage: 2-3 zaus ntsuas voltage (50/60 Hz)
- Test Duration: 1 teev
Peb AC / DC hipot tester tuaj yeem ua qhov ntsuas dielectric strenght rau transformer, koj tuaj yeem xaiv cov qauv suitabe raws li qhov yuav tsum tau ua.
2. Kev Ntsuam Xyuas Ib Feem: Tshawb xyuas qhov cuam tshuam ntawm rwb thaiv tsev.
- Test voltage: 1.5-2 zaus ntsuas voltage
- Ntau zaus: 50/60 Hz
Non-PD test system tuaj yeem ua qhov offline PD test rau transformer
3. AC Voltage Withstand Test: Txheeb xyuas cov rwb thaiv tsev tiv thaiv kev muaj peev xwm.
- Test voltage: 2-3 zaus ntsuas voltage (50/60 Hz)
- Test Duration: 1 teev
Peb AC / DC hipot tester tuaj yeem ua qhov ntsuas dielectric strenght rau transformer, koj tuaj yeem xaiv cov qauv suitabe raws li qhov yuav tsum tau ua.
Transformer Oil Tests
1. Roj Dielectric Strength Test: Ntsuas roj rwb thaiv tsev lub zog.
- Test voltage: 30-50 kV
- Tsawg kawg dielectric zog: 30 kV
Peb JYY-HI Roj BDV tester muaj ib lub khob thiab qhov hluav taws xob mus txog 80KV.
2. Roj Moisture Content Test: Ntsuas cov roj noo noo cov ntsiab lus.
- Cov dej noo siab tshaj plaws: 2% (los ntawm qhov hnyav)
YWS-2 roj av cov ntsiab lus tester muaj qhov tseeb thiab kev ua tau zoo, yooj yim rau kev khiav lag luam thiab nqa tau yooj yim.
3. Roj Acidity Test: ntsuas roj acidity.
- acidity siab tshaj plaws: 0.5 mg KOH/g
Peb muaj YSZ-H roj acidity tester los ntsuas cov kua qaub ntawm cov roj transformer. Nws yog ib qho yooj yim rau kev khiav lag luam thiab kev ua haujlwm siab.
Kev kuaj lub cev thiab pom kev
1. Kev tshuaj xyuas qhov muag: Tshawb xyuas lub cev puas tsuaj lossis qhov tsis xws luag.
2. Tightness Test: Xyuas cov hluav taws xob sib txuas.
3. Transformer Oil Level Check: Ua kom muaj roj txaus.
4. Kev Ntsuam Xyuas Qhov Cuab Yeej Cuab Yeej: Txheeb xyuas qhov ua haujlwm ntawm lub tshuab cua txias.
Kev Tswj thiab Kev Tiv Thaiv Kev Xeem
1. Kev Tiv Thaiv Relay Test: Tshawb xyuas kev tiv thaiv relay ua haujlwm.
2. Tswj Circuit Test: Kev ntsuam xyuas tswj Circuit Court ua haujlwm.
3. Tswb thiab Interlock Test: Txheeb xyuas lub tswb thiab cuam tshuam kev ua haujlwm.
Kev ntsuam xyuas kev nyab xeeb
1. Earth Fault Test: Tshawb xyuas lub ntiaj teb txhaum kev tiv thaiv. Koj tuaj yeem siv DER2571 earth resistance tester los xyuas, lossis siv lub ntiaj teb fault detector
2. Kev Ntsuas Hluav Taws Xob Hluav Taws Xob: Ntsuas kev ua haujlwm ntawm xob laim ntes. FC-2GB cov khoom siv hluav taws xob tuaj yeem siv tau.
3. Grounding Test: Txheeb xyuas qhov kev ncaj ncees hauv av.
Kev Ua Raws Cai
1. IEC 60076-1 (Power Transformers)
2. IEC 60076-2 (Tub kub nce)
3. IEC 60076-3 (Ib theem rwb thaiv tsev)
4. IEEE C57.12.
5. ANSI/IEEE C57.13 (Txoj cai yuav tsum muaj rau cov cuab yeej Transformers)
Pre-Commissioning Checklist
1. Saib xyuas cov chaw tsim khoom cov ntaub ntawv.
2. Tshawb xyuas kev sib txuas hluav taws xob.
3. Kev tswj xyuas thiab kev tiv thaiv kab ke.
4. Ua qhov kev kuaj pom.
5. Ua kev ntsuam xyuas kev nyab xeeb.