Xov xwm

1. Lub chaw thauj khoom feem ntau muaj qhov chaw nres tsheb lossis chaw faib khoom, thiab qhov nce lossis txo qhov voltage yog ua tiav los ntawm (transformer).

2, Tuam Tshoj tus "hwj chim zaus" yog (50) Hz, zaus sib txawv ntxiv los yog rho tawm (0.2) Hz, voltage sib txawv ntxiv los yog rho tawm (5%)

3, peb-theem AC fais fab system nyob rau hauv lub lag luam hom ntawm lub hwj chim mov ntawm nruab nrab (tsis nruab nrab grounding) system, ( nruab nrab grounding los ntawm impedance), ( nruab nrab direct grounding) system.

4, lub Hoobkas qis-voltage fais fab faib qhov system thaiv hom yog (radial), (ntev), (sib xyaw), (ntiv nplhaib).

5, lub dissociation ntawm arc yog (thermoelectric emission), (high electric teb emission), (kev sib tsoo dissociation), (thermal dissociation).

6. Nyob rau hauv thawj load, tshwj xeeb tshaj yog tseem ceeb load, nyob rau hauv tas li ntawd mus rau (ob) ywj siab hwj chim mov, yuav tsum tau ntxiv (xws li fais fab mov), thiab tsis muaj lwm yam load nkag.

7. Qhov ntsuas qhov ntsuas yog qhov xav tau ntawm cov khoom siv hluav taws xob xaiv raws li (cov cua sov).

8, poob yog fuse belongs rau (tsis txwv txaus) fuse.

9. Cov cuab yeej tiv thaiv xob laim Tag nrho cov khoom siv hluav taws xob yuav tsum tau txuas nrog cov cuab yeej siv hauv av los ntawm (tiav tawm).

10, cov kev cai yooj yim ntawm kev tiv thaiv relay yog (xaiv), (ceev), (kev ntseeg siab), (rhiab heev).

11, nyob rau hauv lub hwj chim mov mus rau hauv txoj kab ntawm lub tshwj xeeb metering txee, nws yog tsim nyog los nruab ib tug xam cov nqi hluav taws xob ntawm peb-theem (active) thiab (reactive) watt-teev meter.

12. Nyob rau hauv lub Hoobkas circuits, kev sib txuas ntawm lub hauv paus Circuit Court thiab theem nrab Circuit Court feem ntau yog ua los ntawm tam sim no transformer thiab voltage transformer.

13. Cov qauv kev faib tawm sab nraud feem ntau ntawm cov chaw tsim khoom thiab cov lag luam yog (kab nyiaj siv ua haujlwm) thiab (cable).

14. Kev ua haujlwm ntawm lub tshuab hluav taws xob feem ntau yog siv rau (kev ntsuas hluav taws xob ntau) thiab (kev tiv thaiv relay).

Feem ntau hom tsis ua haujlwm hauv lub tshuab hluav taws xob yog (luv luv luv).

16. Cov cuab yeej tiv thaiv overcurrent muab faib ua ob hom (tso lub sij hawm txwv) thiab (tsis zoo lub sij hawm txwv).

17. Txoj kev los txhim kho lub ntuj tsim hluav taws xob yog siv cov kev ntsuas los txo qhov yuav tsum tau (reactive zog) ntawm cov khoom siv hluav taws xob los txhim kho nws lub zog.

18. Cov kab hluav taws xob uas xa cov hluav taws xob hluav taws xob los ntawm qhov chaw thauj khoom mus rau txhua tus neeg siv khoom yog hu ua (distribution) kab.

19. Qhov tsawg-voltage tis voltage ntawm lub Hoobkas yog tsuas yog txiav txim los ntawm qhov xwm ntawm cov nroj tsuag cov khoom siv fais fab.

20, cov cim tseem ceeb ntawm cov khoom siv hluav taws xob zoo yog (voltage), (frequency), (waveform), (lub zog txuas ntxiv).