Nyob rau hauv 6-35KV AC fais fab daim phiaj hluav taws xob ntawm lub zog hluav taws xob, qhov nruab nrab ntawm daim phiaj tuaj yeem siv los ntawm txoj hauv kev xws li ungrounded, arc suppression coil grounded, high resistance grounded, thiab low resistance grounded. Nyob rau hauv lub hwj chim system (tshwj xeeb tshaj yog nyob rau hauv lub nroog fais fab mov systems uas cables yog lub ntsiab kis tau tus mob kab), lub siab hauv av capacitive tam sim no yuav tsim tshwj xeeb "tseem ceeb" tej yam kev mob rau qhov tshwm sim ntawm "intermittent" arc grounding overvoltage, ua rau cov tiam ntawm arc grounding overvoltage. Daim ntawv thov ntawm nruab nrab point kuj grounding txoj kev tsim ib tug tso tawm channel rau lub zog (them) nyob rau hauv lub grounding capacitance ntawm lub hwj chim daim phiaj, thiab injects resistive tam sim no mus rau hauv lub txhaum point, ua lub grounding txhaum tam sim no muaj resistive capacitive zog, txo lub theem kaum sib txawv nrog voltage, txo tus nqi ntawm qhov txhaum point tam sim no tom qab xoom hla thiab arc extinguishing, limiting lub overvoltage rau hauv 2.6 npaug ntawm theem voltage. Nyob rau tib lub sijhawm, nws ua kom qhov kev txiav txim siab raug thiab tshem tawm qhov tsis raug ntawm thawj thiab theem nrab hauv kab feeder ntawm high-rhiab heev grounding txhaum tiv thaiv cov cuab yeej, yog li tiv thaiv kev ua haujlwm ntawm lub cev.
Tom qab lub kaw lus yog grounded los ntawm ib tug resistor, nws muaj peev xwm txwv qhov txhaum tam sim no kom ua tau raws li nram no kev tiv thaiv los:
1. Txo kev sib tsoo thiab melting kev raug mob ntawm cov khoom siv hluav taws xob tsis zoo.
2. Txo cov tshuab hluav taws xob thaum muaj kev txhaum tam sim no hla cov kab thiab cov khoom siv.
3. Txo cov hluav taws xob vibrations thiab raug mob rau cov neeg ua hauj lwm los ntawm cov stray tam sim no nyob rau hauv txoj kev rov qab mus rau hauv av.
4. Txo qhov cuam tshuam thiab flashover puas tsuaj rau cov neeg ua haujlwm thaum ib tus neeg tshwm sim ntawm qhov txhaum.
5. Txo thiab tshem tawm cov kab hluav taws xob tam sim ntawd poob los ntawm kev ua txhaum hauv av.
6. Xyuas kom tswj tau tam sim no overvoltage.
BNR transformer nruab nrab point grounding resistor txee yog siv rau ntawm nruab nrab point ntawm transformers nyob rau hauv 6-35kV AC zog daim phiaj kom ua tiav kev siv ntawm nruab nrab point grounding los ntawm tsis kam nyob rau hauv cov hluav taws xob daim phiaj.
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