Video: Dab tsi yog qhov tsawg kawg nkaus kev nyab xeeb ntawm cov kab hluav taws xob overhead?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Kev Ua Haujlwm Kev nyab xeeb thiab Kev Tswj Xyuas Kev Noj Qab Haus Huv (OSHA) xav kom cov cuab yeej khaws cia tsawg kawg 10 feet deb ntawm kab zog nrog voltages mus txog 50kV. Rau kab nrog voltages siab tshaj 50kV, qhov yuav tsum tau nyob deb tseem ntau dua (saib hauv qab).
Tom qab ntawd, qhov kev ncua deb yog dab tsi rau 11kv fais fab kab?
Kev tshem tawm ntawm Cov Tsev HT thiab EHT cov kab hluav taws xob IE Rule 80
| Vertical Distance | |
|---|---|
| High voltage kab mus txog 33KV | 3.7m ua |
| Kab rov tav clearance nruab nrab ntawm tus neeg xyuas pib thiab Lub Tsev | |
| High Voltage mus txog 11 KV | 1.2 Meter |
| 11 KV rau 33 KV | 2.0m ib |
Tsis tas li ntawd, puas yog qhov tsis zoo nyob ze cov kab hluav taws xob? Cov kws tshawb fawb feem ntau ntseeg tias raug rau cov qib qis EMFs nyob ze cov kab hluav taws xob yog nyab xeeb , tab sis qee cov kws tshawb fawb txuas ntxiv mus nrhiav kev pheej hmoo noj qab haus huv cuam tshuam nrog cov haujlwm no. Yog tias muaj kev pheej hmoo xws li mob qog noj ntshav nrog nyob ze cov kab hluav taws xob , ces nws yog qhov tseeb tias cov kev pheej hmoo tsawg tsawg.
Raws li txoj cai, qhov tsawg kawg nkaus kev nyab xeeb nyob rau hauv crane ua haujlwm los ntawm energized overhead hwj chim kab yog dab tsi?
Kab Clearance Nyob deb 29 CFR 1910.269, OSHA's Hluav taws xob tiam, Kev sib kis , thiab Distribution standard, txwv kev ua haujlwm crane rau a yam tsawg kawg nkaus tshem tawm nyob deb ntawm 10 feet ntawm kab zog thiab lwm yam khoom siv muaj zog mus txog 50 kilovolts (50,000 volts).
Dab tsi yog qhov kev nyab xeeb nyob deb ntawm cov kab hluav taws xob UK?
Qhov no txhais tau tias nyob tsis ze tshaj 50 meters thiab zoo dua tseem 100 meters los ntawm high voltage overhead kab . Qhov kev pheej hmoo txo qis muaj feem cuam tshuam rau qee yam hu ua inverse square law uas txhais tau hais tias lub zog teb poob qis heev qhov ntau dua. nyob deb los ntawm qhov chaw.
Pom zoo:
Dab tsi yog qhov txawv ntawm kev txuag hluav taws xob thiab lub hauv paus ntsiab lus ntawm kev txuag hluav taws xob?
Lub caloric txoj kev xav tau khaws cia tias cov cua sov tsis tuaj yeem tsim los yog rhuav tshem, qhov kev txuag ntawm lub zog ua rau lub hauv paus ntsiab lus tsis sib xws uas cov cua sov thiab cov tshuab ua haujlwm sib hloov tau
Dab tsi yog cov yam ntxwv ua siab hloov hluav taws xob hloov hluav taws xob LET muaj thaum piv nrog LET hluav taws xob tsawg?
Dab tsi yog cov yam ntxwv ua kom muaj hluav taws xob hloov hluav taws xob siab (LET) hluav taws xob muaj thaum piv nrog cov hluav taws xob qis-LET? Cov huab hwm coj ntau ntxiv, txo qhov nkag mus. (Vim lawv cov nqi hluav taws xob thiab cov khoom loj heev, lawv ua rau ntau ionizations hauv cov ntaub so ntswg, sai sai poob lub zog
Puas yog hluav taws xob them nqi hluav taws xob tsuas yog hluav taws xob lossis yog tus nqi ntawm tag nrho cov atoms?
Tus nqi zoo attracts tus nqi tsis zoo thiab ua rau lwm tus nqi zoo. Puas yog hluav taws xob them nqi hluav taws xob tsuas yog hluav taws xob lossis yog tus nqi ntawm tag nrho cov atoms? Cov nqi hluav taws xob yog cov cuab yeej ntawm tag nrho cov atoms
Dab tsi yog qhov zoo ntawm kev siv lub tshuab hluav taws xob hloov hluav taws xob hauv atomic absorption?
Qhia qhov zoo thiab qhov tsis zoo ntawm lub cub tawg piv nrog kev siv cov nplaim taws hauv atomic absorption spectroscopy. Cov txiaj ntsig tseem ceeb yog ntau dua rhiab heev (concentration thiab tshwj xeeb tshaj yog loj). Lub ntsiab tsis zoo yog cov cuab yeej cuab tam ntau dua thiab cov nqi ntsuas
Kev sib raug zoo ntawm hluav taws xob thiab hluav taws xob teb yog dab tsi?
Electric teb yog txhais raws li lub zog hluav taws xob ib chav tsev nqi. Cov kev taw qhia ntawm lub teb yog coj mus rau qhov kev taw qhia ntawm lub zog nws yuav ua rau ib tug zoo kuaj nqi. Cov hluav taws xob hluav taws xob yog radially sab nraud los ntawm tus nqi zoo thiab radially mus rau qhov tsis zoo ntawm tus nqi