1. Kev cuam tshuam tsis kam
Thaum cov khoom hnyav tuaj tsoo, koj cov khau looj plab yuav tsum tau nqus cov tshuab kom tsis txhob raug mob hauv chaw ua haujlwm. Cov khau khiab uas muaj kev cuam tshuam (IR) tiv thaiv koj txhais taw los ntawm kev cuam tshuam ntawm lub ntsej muag ntawm cov khib nyiab los yog cov khoom dov - ib qho kev phom sij rau cov neeg ua haujlwm hauv ntau qhov kev lag luam, tshwj xeeb tshaj yog cov neeg ua haujlwm tsim kho.
Nws yog hais txog cov khoom muaj peev xwm tiv taus tam sim ntawd los yog hnyav zog los yog poob siab thiab yog ib qho tseem ceeb ntawm ntau yam khoom siv tiv thaiv tus kheej (PPE), xws li khau kev nyab xeeb, hnab looj tes ua haujlwm, tsom iav, thiab lwm yam. Cov khau yuav tsum muaj peev xwm tiv taus cov cuam tshuam yam tsis tso cai ntau dhau mus rau hauv qhov chaw ntiv taw, uas tuaj yeem ua rau raug mob.
Cov qauv sib txawv, xws li ASTM F-2413 kev tsim kev nyab xeeb, qhia txog qib sib txawv ntawm kev cuam tshuam rau cov khau kev nyab xeeb, nyob ntawm qhov chaw ua haujlwm thiab qhov muaj peev xwm txaus ntshai. Kev nyab xeeb ntiv taw khau looj plab hlaub uas ua tau raws li qhov yuav tsum tau muaj kev tiv thaiv feem ntau yog sau nrog tus lej uas qhia txog hom thiab qib kev tiv thaiv lawv muab.
Piv txwv li, ASTM F2413 I / 75 C / 75 txhais tau tias cov khau tuaj yeem tiv taus qhov cuam tshuam txog li 75 ko taw-phaus thiab compressive load txog li 2,500 phaus.
2. Kev Tiv Thaiv Hluav Taws Xob
Ua hauj lwm nyob ib ncig ntawm cov hlau? Kev Tiv Thaiv Hluav Taws Xob Hluav Taws Xob (EH) tsis tuaj yeem sib tham. Cov ntawv sau no qhia tias koj cov khau tiv thaiv kev ua haujlwm tuaj yeem tiv taus hluav taws xob, ua kom koj muaj kev nyab xeeb ntawm cov hluav taws xob ua rau tuag taus. Kev tiv thaiv EH yog ua tiav los ntawm kev siv cov khoom siv hluav taws xob tsawg, xws li roj hmab, tawv, lossis cov ntaub ntawv sib xyaw, los tiv thaiv cov hluav taws xob los ntawm lub cev.
Lawv kuj muaj hluav taws xob tsis zoo, uas txhais tau hais tias lawv tsis yooj yim hloov lawv cov khoom hluav taws xob thaum raug hluav taws xob lossis tam sim no. Hluav taws xob poob siab tsis kam yog lub peev xwm ntawm cov khoom siv los tiv thaiv qhov ntsuas qhov ntsuas hluav taws xob yam tsis tau tawg lossis ua rau raug mob. EH tiv thaiv kev ua haujlwm khau yuav tsum ua kom tau raws li cov kev cai ntawm hluav taws xob tiv thaiv ntawm cov qauv tsim, xws li ASTM F2413 EH (tiv thaiv kev qhib hluav taws xob mus txog 600 volts hauv cov xwm txheej qhuav), thiab feem ntau yog cim nrog EH cim lossis daim duab peb sab ntsuab nrog dawb tsab ntawv E sab hauv.
Qee zaum, CSA Dawb daim duab plaub nrog ib tsab ntawv txiv kab ntxwv Greek omega - Ω qhia tias cov khauj khaum muaj kev tiv thaiv hluav taws xob - muaj peev xwm tiv taus txog li 18, 000 Volts yam tsis muaj kev cuam tshuam txog kev nyab xeeb thiab tsis muaj qhov cuam tshuam tam sim no. Tshaj 1mA rau lub sijhawm 60 vib nas this.
3. Dielectric rwb thaiv tsev
Thaum cov khau tiv thaiv kev nyab xeeb nrog hluav taws xob muaj kev phom sij muaj kev tiv thaiv txaus rau ntau tus neeg ua haujlwm thoob plaws ntau qhov chaw ua haujlwm, cov khau dielectrically insulated (DI) yuav siv kev nyab xeeb mus rau qib tom ntej, ua kom muaj kev tiv thaiv ntxiv tiv thaiv cov nqi hluav taws xob thiab kev phom sij.
Yog li, yog tias koj tab tom taug kev mus rau qhov chaw tshawb fawb ntawm cov xov hlau nyob lossis ua haujlwm ze ze rau cov khoom siv hluav taws xob, xyuas kom koj xaiv cov khau ruaj ntseg uas muaj cov rwb thaiv tsev dielectric - nws tuaj yeem cawm koj txoj sia.
4. Kev ua haujlwm tsis zoo
"SR" acronym stands rau plam tsis kam. Nyob rau hauv qhov chaw ntub dej thiab qhov chaw ntub dej, koj cov khau kev nyab xeeb hauv chaw ua haujlwm yuav tsum yog koj cov kev ntseeg siab, tsis yog koj poob. Cov khau looj plab hlaub nrog cov khau khiab-tiv taus muab cov traction koj xav tau mus rau qhov chaw zoo nkauj yam tsis tas yuav xaus rau ntawm koj lub nraub qaum. Lawv feem ntau sau nrog lub cim grey square nrog dub "R."
Hauv thaj tsam ntawm daim ntawv pov thawj tiv thaiv plam, koj feem ntau yuav ntsib peb pawg sib txawv: SRA, SRB, thiab SRC, qhia txog qib sib txawv ntawm kev sib tw, pab koj ntsuas seb koj nkawm khau yuav ua tau zoo li cas ntawm qhov chaw sib txawv.
Piv txwv li, SRA qhia txog kev tiv thaiv kev phom sij ntawm cov nplais pobzeb hauv pem teb nrog cov tshuaj ntxuav tes, SRB qhia txog kev tiv thaiv ntawm cov plag tsev steel nrog glycerol, thiab SRC muab ob qho tib si SRA thiab SRB cov qauv, muab kev tiv thaiv thoob plaws ntau qhov chaw.
5. Puncture Resistance
Cov ntsia hlau, shards, thiab lwm yam khoom ntse ua rau muaj kev hem thawj tsis tu ncua nyob rau hauv ntau qhov chaw ua haujlwm - qhov ntawd yog qhov kev tiv thaiv ib leeg los rau hauv. Cov khau looj plab hlaub (PR) ib leeg (daim ntawv nrog daim duab peb sab ntsuab nrog "R" hauv Dawb Circle) ua ntxiv kev tiv thaiv, tiv thaiv cov kev phom sij no los ntawm kev tho thiab ua rau muaj kev puas tsuaj, yog li txo qis kev phom sij ntawm ko taw raug mob rau cov neeg ua haujlwm.
6. Compression Resistance
Raws li qhov hnyav ntawm cov tshuab hnyav, koj txhais taw xav tau txhua yam kev txhawb nqa thiab kev tiv thaiv ntxiv uas lawv tuaj yeem tau txais. Compression-resistant (CR) khau boots faib lub siab sib npaug, txo qhov kev pheej hmoo ntawm crushing raug mob. Compression resistance yog ntsuas los ntawm kev siv lub compressive load rau hauv cov ntiv taw kev nyab xeeb lub thawv thiab xyuas cov nqi nkag mus rau hauv cov ntiv taw.
Cov khau yuav tsum muaj peev xwm tiv taus lub nra tsis dhau qhov siab tshaj plaws tso cai nkag mus, uas tuaj yeem ua rau raug mob ntawm cov ntiv taw. Raws li ASTM cov qauv rau kev nyab xeeb khau, qib ntawm compression resistance yog sau npe siv tsab ntawv C, ua raws li tus lej uas qhia txog qib kev tiv thaiv.
Piv txwv li, C / 75 txhais tau tias cov khau tuaj yeem tiv taus qhov hnyav txog li 2,500 phaus. Muaj peb theem ntawm kev tiv thaiv: 30, 50, thiab 75. Chav kawm 75 yog qib siab tshaj plaws thiab pom zoo rau feem ntau cov kev xav tau kev nyab xeeb khau.
7. Tshuaj tiv thaiv
Los ntawm cov khoom corrosive mus rau cov tshuaj caustic, koj cov khau yuav tsum sawv ntsug rau txhua yam haujlwm cuam tshuam rau lawv. Chemical-resistant khau looj plab hlaub ua rau koj txhais taw kom tsis txhob muaj teeb meem, kom ntseeg tau tias koj tuaj yeem tsom mus rau txoj haujlwm ntawm tes, feem ntau yog ua los ntawm PVC, roj hmab lossis neoprene. Lawv zoo tagnrho rau kev lag luam ib puag ncig xws li cov nroj tsuag tshuaj, chaw kuaj mob, roj refineries, thiab kev ua liaj ua teb.
8. Kev Tiv Thaiv Metatarsal
Cov pob txha metatarsal ilv hauv koj txhais taw tsim nyog ntxiv TLC. Kev tiv thaiv Metatarsal (MT) tiv thaiv qhov chaw tsis zoo no los ntawm kev cuam tshuam thiab kev raug mob compression, ua rau koj txhais taw thiab hauv kev ua si, tshwj xeeb tshaj yog tias koj ua haujlwm hauv kev lag luam hnyav thiab kev tsim kho.
Cov khau tiv thaiv uas sau nrog lub duab plaub dub uas sau tsab ntawv "M" - yuav tiv thaiv koj cov metatarsals tiv thaiv kev raug mob los ntawm kev cuam tshuam ntawm cov khoom hnyav.
9. Static Dissipative Properties
Nyob rau hauv ib puag ncig qhov twg static tsub nqi ntau, static dissipative khau boots yog koj zoo tshaj plaws tiv thaiv. Dissipative khau tiv thaiv kev tsim cov hluav taws xob zoo li qub, txo qhov kev pheej hmoo ntawm qhov hluav taws xob thiab kev poob siab. Khaws ib lub qhov muag tawm rau CSA Yellow duab plaub sib tw ncaws pob ntsuab "SD +" cim nrog lub cim hauv av - nws yog ib qho qhia tau hais tias cov khauj khaum zoo li qub.
Cov khau tshwj xeeb uas tsim los ntawm cov thom khwm no khav theeb tiv thaiv kev tiv thaiv zoo li qub tsim los ua kom nrawm nrawm ntawm cov nqi hluav taws xob hauv kev tswj hwm. Kev sim nruj kom ua tau raws li ASTMF2412 tus qauv, txhua qhov qauv yuav tsum ua kom pom qhov tsis kam poob hauv qhov ntau ntawm 106 Ohms txog 3.5 x 107 Ohms. Yog li, thaum koj pom cov cim no ntawm koj lub khau, so kom paub tseeb tias lawv tau nruab los ua kom cov nqi tsis zoo li qub ntawm qhov chaw, ua kom koj nyob nyab xeeb thiab hauv av.
Hauv cov lus ASTM, cov khau zoo li qub tau poob rau hauv tus qauv ASTM F2413 thiab nthuav tawm nws tus kheej hauv peb theem kev tiv thaiv: ESD 100, ESD 35, thiab ESD 10 khav theeb kev tiv thaiv ib leeg txog li 100 megaohms, 35 megaohms, thiab 10 megaohms, ntsig txog. .