Cov kev cai tseem ceeb rau transformers tam sim no

1. Rated capacity: the apparent power consumed when the rated secondary current passes through the secondary rated load. The rated capacity can be expressed by the apparent power V.A or by the secondary rated load impedance Ω.

2. Thawj qhov ntsuas tam sim no: lub zog thauj khoom tam sim no tso cai rau dhau los ntawm thawj winding ntawm tam sim no transformer. Thawj qhov ntsuas tam sim no ntawm qhov tam sim no transformer siv nyob rau hauv lub hwj chim system yog 5-25000A, thiab precision tam sim no transformer siv nyob rau hauv cov khoom xeem yog 0.1-50000A. Tam sim no transformer tuaj yeem ua haujlwm raws li qhov ntsuas tam sim no tau ntev. Thaum lub load tam sim no tshaj qhov ntsuas tam sim no, nws yog hu ua overload. Lub sij hawm ntev overloading ntawm lub transformer tam sim no yuav hlawv tawm lub windings los yog txo cov kev pab cuam lub neej.

3. Secondary rated tam sim no: thawj induced tam sim no tso cai rau dhau los ntawm theem nrab winding ntawm tam sim no transformer.

4. Rated tam sim no piv (transformation ratio): tus piv ntawm thawj rated tam sim no mus rau theem nrab rated tam sim no.

5. Rated voltage: qhov siab tshaj plaws voltage uas cov thawj winding tuaj yeem tiv taus rau hauv av rau lub sijhawm ntev (tus nqi zoo yog nyob rau hauv kV), uas yuav tsum tsis txhob qis dua qhov ntsuas theem voltage ntawm cov kab txuas. Qhov ntsuas voltage ntawm tam sim no transformer yog muab faib ua 0.5, 3, 6, 10, 35, 110, 220, 330, 500kV thiab lwm yam voltage theem.

6. 10 feem pua ​​​​ntau ntau yam: nyob rau hauv cov ntaub ntawv theem nrab load thiab tej yam hwj chim, thaum tam sim no yuam kev ntawm lub transformer tam sim no yog -10 feem pua, qhov ntau yam ntawm cov thawj tam sim no rau nws rated nqi. Qhov 10 feem pua ​​​​ntau yam yog ib qho kev qhia txog kev tiv thaiv relay.

7. Qhov tseeb theem: qhia txog qib ntawm qhov yuam kev (qhov sib txawv ntawm qhov sib txawv thiab lub kaum sab xis sib txawv) ntawm lub transformer nws tus kheej. Qhov tseeb theem ntawm lub transformer tam sim no tau muab faib ua 0.001 mus rau 1 theem, thiab qhov tseeb tau zoo dua qub dua piv nrog cov thawj. Cov cuab yeej hluav taws xob siv nyob rau hauv cov chaw tsim hluav taws xob, cov chaw nres tsheb, thiab cov hluav taws xob faib hluav taws xob tswj vaj huam sib luag ntawm lub hwj chim-cov khoom siv feem ntau siv chav kawm 0.5 lossis 0.2; kev tiv thaiv relay siv rau cov khoom siv thiab cov kab feem ntau tsis qis dua chav kawm 1; thaum siv rau kev ntsuas hluav taws xob hluav taws xob, nyob ntawm qhov ntsuas lub peev xwm lossis qhov kev siv hluav taws xob raug xaiv raws li cov cai ntawm cov cai (saib thawj cov lus qhuab qhia).

8. Qhov sib txawv ntawm qhov sib txawv: qhov yuam kev ntawm lub transformer muaj ob ntu: qhov sib piv qhov sib txawv thiab lub kaum sab xis sib txawv. Qhov kev ua yuam kev yog luv luv raws li qhov sib txawv ntawm qhov sib txawv, feem ntau sawv cev los ntawm lub cim f, uas yog sib npaug ntawm qhov sib txawv ntawm qhov tseeb theem nrab tam sim no thiab cov thawj tam sim no hloov mus rau theem nrab, thiab qhov piv ntawm cov thawj tam sim no hloov mus rau theem nrab. , qhia raws li feem pua.

9. Angle difference: The phase angle error is referred to as the angle difference, generally represented by the symbol δ, which is the phase difference between the secondary current vector and the primary current vector after rotating 180 degree . It is stipulated that the secondary current vector is a positive value ahead of the primary current vector δ, otherwise it is a negative value, and the unit of calculation is the minute (').

10. Thermal stability thiab dynamic stability multis: Thaum lub hwj chim system tsis ua hauj lwm, tam sim no transformer yuav raug thermal nyhuv thiab electrodynamic kev txiav txim ntawm lub loj tam sim no tshwm sim los ntawm luv luv -circuit tam sim no. Tam sim no transformer yuav tsum muaj peev xwm tiv taus yam tsis muaj kev puas tsuaj. Muaj peev xwm yog qhia nyob rau hauv cov nqe lus ntawm thermal thiab dynamic stability ntau. Lub thermal stability ntau yog hais txog qhov sib piv ntawm qhov tam sim no uas tsis ua rau cov cua sov ntawm lub tam sim no transformer kom tshaj qhov tso cai txwv tsis pub dhau 1s ntawm lub thermally ruaj khov tam sim no mus rau qhov ntsuas tam sim no ntawm transformer tam sim no. Lub dynamic stability ntau yog qhov piv ntawm tus nqi tam sim no ntawm qhov siab tshaj plaws tam sim no uas tam sim no transformer tuaj yeem tiv taus rau nws qhov ntsuas tam sim no.