CT (tam sim no transformer) qhov chaw tam sim no yog ib qho tseem ceeb ntawm kev teeb tsa hluav taws xob thiab hluav taws xob faib hluav taws xob. CTs yog siv los ntsuas qhov tam sim no ntws hauv lub tshuab hluav taws xob, uas yog tom qab ntawd hloov mus rau hauv lub teeb liab uas tuaj yeem siv rau kev ntsuas thiab tswj lub hom phiaj. Txawm li cas los xij, qhov tseeb ntawm CT qhov chaw tam sim no yog qhov tseem ceeb rau kev ua tau zoo thiab kev nyab xeeb
(a). Qhov ntsuas thawj tam sim no yuav tsum raug xaiv los ntawm tus qauv tus nqi. Tus nqi yuav tsum raug xaiv kom nws haum rau txhua qhov tam sim no thiab tso cai tshaj qhov tam sim no hauv thawj lub voj voog.
Tam sim no transformer ua hauj lwm high-set instantaneous over-tam sim no relay tej zaum yuav raug xaiv rau siab dua cov thawj tam sim no; yog li qhov kev txwv qhov tseeb yuav raug txo kom tsawg.
Xa mus rau qhov tseem ceeb ntawm qhov ntsuas thawj zaug: 0.5 - 1 - 2.5 - 5 - 10 - 12.5 - 15 - 20 - 25 -30 - 40 - 50 - 60 - 75 - 100 - 125 - 150 - 200 - 250 - 300 - 400 - 500 - 600 - 750 -800 - 1000 - 1250 - 3000 - 4000 - 5000 - 6000 - 7500 - 10000 Amperes.
Kev siv qhov tseem ceeb ntawm qhov ntsuas thib ob tam sim no: 1-2-5 Amperes. Kev siv qhov tseem ceeb ntawm cov zis tso zis: 2.5-5-7.5-10-15-30 VA thiab nce.
(b) Rated lub sijhawm luv luv tam sim no thiab nws lub sijhawm piv txwv:
750 A rau 0.5 sec., 525 rau 1 sec., 300 rau A rau 3 sec.
Tam sim no Transformer Classification of Tests: -
Hom Kev Xeem:
Cov hauv qab no yuav yog cov kev xeem hom:
a) Cov kev xeem luv luv tam sim no
b) Kev ntsuas kub nce siab.
c) Lightning impulse test rau tam sim no transformers rau kev pabcuam hauv hluav taws xob
nthuav tawm installation
d) Hloov cov kev ntsuas hluav taws xob hloov pauv tam sim no ntawm 420 kV thiab siab dua
e) High voltage fais fab zaus ntub dej tiv thaiv qhov ntsuas hluav taws xob ntawm sab nraum zoov tam sim no
transformers mus txog thiab suav nrog 245 Kv.
f) Kev txiav txim siab ntawm qhov tsis raug lossis lwm yam ntxwv raws li qhov xav tau ntawm
cov npe tsim nyog lossis cov chav kawm raug.
Cov kev xeem niaj hnub:
Cov hauv qab no yuav yog cov kev xeem niaj hnub:
a) Kev txheeb xyuas cov cim davhlau ya nyob twg thiab polarity
b) Lub zog zaus qhuav tiv thaiv kev sim ntawm thawj windings.
c) Fais fab zaus qhuav tiv thaiv cov kev sim ntawm cov windings thib ob
d) Tshaj-voltage inter-tig kuaj
e) Kev ntsuam xyuas ib nrab tso tawm raws li
f) Kev txiav txim siab ntawm qhov yuam kev lossis lwm yam ntxwv raws li qhov yuav tsum tau ua ntawm cov qauv tsim nyog lossis cov chav kawm raug.
Optional Tests:
Cov kev ntsuam xyuas hauv qab no yog qhov tsim nyog, yuav tsum tau ua los ntawm kev pom zoo ntawm tus neeg yuav khoom thiab cov chaw tsim khoom:
a) Chopped xob laim impulse xeem raws li hom kev xeem
b) Kev ntsuas dielectric dissipation yam rau roj-immersed tam sim no
transformers ntawm 72.5 kV thiab siab dua
c) Kev ntsuas kev ntsuas ntawm cov hloov pauv tam sim no mus txog thiab suav nrog 36kV.