Qhov txawv ntawm DC Cables thiab AC Cables

1. Cov Txheej Txheem Siv Sib Txawv:

Cov xov hluav taws xob DCsiv rau hauv cov kab ke xa hluav taws xob ncaj qha tom qab kev kho kom raug, thaum cov cables AC feem ntau siv rau hauv cov kab ke fais fab ua haujlwm ntawm qhov zaus ntawm kev lag luam (50Hz).

2. Kev Poob Zog Tsawg Dua Hauv Kev Kis:

Piv rau cov cables AC, cov cables DC qhia tau tias muaj kev poob zog me dua thaum lub sijhawm xa xov. Kev poob zog hauv cov cables DC yog vim qhov kev tiv thaiv tam sim no ntawm cov conductors, nrog rau kev poob rwb thaiv tsev me me (nyob ntawm qhov loj ntawm kev hloov pauv tam sim no tom qab kev kho). Ntawm qhov tod tes, qhov kev tiv thaiv AC ntawm cov cables AC-voltage qis me ntsis loj dua qhov kev tiv thaiv DC, thiab rau cov cables siab, kev poob yog qhov tseem ceeb vim yog qhov cuam tshuam ze thiab qhov cuam tshuam ntawm daim tawv nqaij, qhov twg kev poob ntawm kev tiv thaiv rwb thaiv tsev ua lub luag haujlwm tseem ceeb, feem ntau yog tsim los ntawm impedance los ntawm capacitance thiab inductance.

3. Kev Ua Haujlwm Zoo Tshaj Plaws thiab Kev Poob Kab Tsawg:

DC cables muab kev xa xov zoo thiab kev poob kab tsawg kawg nkaus.

4. Yooj yim rau kev kho tam sim no thiab hloov pauv kev xa hluav taws xob.

5. Txawm hais tias tus nqi ntawm cov khoom siv hloov pauv ntau dua li cov transformers, tag nrho tus nqi ntawm kev siv DC cables qis dua li ntawm AC cables. DC cables yog bipolar, nrog rau cov qauv yooj yim, thaum AC cables yog peb-theem plaub-xaim lossis tsib-xaim systems nrog cov kev cai siab rwb thaiv tsev kev nyab xeeb thiab cov qauv nyuaj dua. Tus nqi ntawm AC cables yog ntau dua peb npaug ntawm DC cables.

6. Kev Nyab Xeeb Siab Hauv Kev Siv DC Cables:

- Cov yam ntxwv ntawm DC kis tau ua rau nws nyuaj rau induce tam sim no thiab to tam sim no, zam kev cuam tshuam electromagnetic nrog lwm cov cables co-layed.

- Cov xov hlau uas muab tso rau ib lub core tsis muaj kev poob magnetic hysteresis vim yog cov hlau structural cable trays, ua rau kev xa xov hlau zoo dua.

- Cov xov hlau DC muaj peev xwm tiv thaiv luv luv thiab overcurrent ntau dua.

- Thaum cov teb hluav taws xob tib yam raug siv rau kev rwb thaiv tsev, lub teb hluav taws xob DC muaj kev nyab xeeb dua li lub teb hluav taws xob AC.

7. Kev Teeb Tsa Yooj Yim, Kev Txij Nkawm Yooj Yim, thiab Cov Nqi Qis Dua rau DC Cables.

 

Kev rwb thaiv tsevCov Kev Cai rau Tib Lub Hwj Chim AC thiab DC thiab Tam Sim No:

Thaum tib lub zog hluav taws xob siv rau ntawm cov rwb thaiv tsev, lub zog hluav taws xob hauv cov xov hluav taws xob DC me dua li cov xov hluav taws xob AC. Vim muaj qhov sib txawv ntawm cov qauv ntawm ob lub zog hluav taws xob, lub zog hluav taws xob siab tshaj plaws thaum lub zog hluav taws xob AC cable yog nyob ze ntawm tus neeg coj hluav taws xob, thaum nyob hauv cov xov hluav taws xob DC, nws feem ntau nyob hauv txheej rwb thaiv tsev. Yog li ntawd, cov xov hluav taws xob DC muaj kev nyab xeeb dua (2.4 npaug) thaum tib lub zog hluav taws xob siv rau ntawm cov rwb thaiv tsev.