Taw qhia: Qhov tseem ceeb ntawm Kev Nyab Xeeb Hluav Taws Xob
Hluav taws xob, lub neej tsis pom kev ntawm lub neej niaj hnub, ua rau peb lub tsev, kev lag luam, thiab kev tsim kho tshiab. Txawm li cas los xij, lub zog tseem ceeb no ua rau muaj kev pheej hmoo, feem ntau yog kev phom sij ntawm hluav taws xob poob siab thiab hluav taws kub tshwm sim los ntawm kev ua txhaum. Residual Current Devices (RCDs) sawv ua cov tub ceev xwm tseem ceeb tiv thaiv cov kev phom sij no, tshem tawm cov khoom siv hluav taws xob sai sai thaum lawv pom cov hluav taws xob txaus ntshai ntws los rau hauv ntiaj teb. Thaum RCDs ruaj khov ua ke rau hauv cov neeg siv khoom muab kev tiv thaiv tseem ceeb rau tag nrho cov circuits, Socket-Outlet Residual Current Devices (SRCDs) muab ib qho tshwj xeeb, hloov tau, thiab cov txheej txheem kev nyab xeeb heev. Cov kab lus no nthuav dav rau hauv lub ntiaj teb ntawm SRCDs, tshawb nrhiav lawv cov kev ua haujlwm, kev siv ntau yam, cov yam ntxwv tseem ceeb, thiab cov khoom lag luam zoo uas ua rau lawv cov cuab yeej tseem ceeb rau kev txhim kho hluav taws xob kev nyab xeeb thoob plaws ntau qhov chaw.

1. Demystifying lub SRCD: Txhais thiab Core Concept
Ib qho SRCD yog ib hom RCD sib xyaw ncaj qha rau hauv lub qhov (socket) qhov hluav taws xob (receptacle). Nws muab cov kev ua haujlwm ntawm tus qauv hluav taws xob qhov hluav taws xob nrog kev tiv thaiv lub neej ntawm RCD nyob rau hauv ib qho, nws tus kheej-muaj plug-in unit. Tsis zoo li RCDs ruaj khov uas tiv thaiv tag nrho cov kab hluav taws xob qis los ntawm cov neeg siv khoom, SRCD muab kev tiv thaiv hauv cheeb tsamnkaus xwbrau cov khoom siv ntsaws ncaj qha rau hauv nws. Xav tias nws yog tus neeg saib xyuas kev nyab xeeb ntawm tus kheej tshwj xeeb rau lub qhov (socket).

Lub hauv paus ntsiab lus tseem ceeb tom qab txhua RCDs, suav nrog SRCDs, yog Kirchhoff Txoj Cai Tam Sim No: qhov tam sim no ntws mus rau hauv ib lub voj voog yuav tsum sib npaug ntawm qhov ntws tawm. Nyob rau hauv ib txwm ua hauj lwm tej yam kev mob, tam sim no nyob rau hauv lub nyob (theem) conductor thiab nruab nrab conductor yog sib npaug zos thiab opposite. Txawm li cas los xij, yog tias muaj teeb meem tshwm sim - xws li cov kab hluav taws xob puas, ib tus neeg kov qhov chaw nyob, lossis cov dej noo nkag - qee qhov tam sim no yuav pom txoj hauv kev tsis xav tau rau hauv ntiaj teb. Qhov kev tsis txaus ntseeg no yog hu ua residual tam sim no lossis lub ntiaj teb to tam sim no.

2. Yuav ua li cas SRCDs ua hauj lwm: Lub Sensing thiab Tripping Mechanism
Cov ntsiab lus tseem ceeb ua rau SRCD kev ua haujlwm yog tam sim no transformer (CT), feem ntau yog toroidal (ntiv nplhaib-shaped) core nyob ib ncig ntawm ob qho tib si nyob thiab nruab nrab conductors muab lub qhov (socket) qhov hluav taws xob.

1. Kev soj ntsuam tas li: Lub CT tas li saib xyuas cov vector sum ntawm cov dej ntws hauv cov neeg ua haujlwm nyob thiab nruab nrab. Raws li ib txwm muaj, tsis muaj txhaum, cov dej ntws no sib npaug thiab sib npaug, ua rau muaj qhov sib nqus sib nqus ntawm xoom hauv CT core.
2. Residual Current Detection: Yog tias qhov txhaum ua rau tam sim no xau rau lub ntiaj teb (xws li, los ntawm ib tus neeg lossis cov khoom siv tsis raug), qhov tam sim no rov qab los ntawm tus neeg xyuas pib nruab nrab yuav tsawg dua qhov tam sim no nkag los ntawm tus neeg xyuas pib nyob. Qhov kev tsis sib haum no tsim cov hlau nplaum sib nqus hauv CT core.
3. Lub Cim Tseem Ceeb: Hloov cov hlau nplaum sib nqus induces ib qhov hluav taws xob nyob rau hauv ib tug thib ob winding qhwv ib ncig ntawm lub CT core. Qhov induced voltage yog proportional rau qhov loj ntawm qhov seem tam sim no.
4. Kev Siv Hluav Taws Xob: Cov teeb liab induced yog pub rau hauv hluav taws xob hluav taws xob hauv hluav taws xob hauv SRCD.
5. Kev Txiav Txim Siab & Ua Haujlwm: Cov khoom siv hluav taws xob sib piv cov ntsuas qhov seem tam sim no tiv thaiv SRCD qhov kev teeb tsa ua ntej rhiab heev (piv txwv li, 10mA, 30mA, 300mA). Yog hais tias qhov seem tam sim no tshaj qhov pib, lub circuitry xa ib lub teeb liab mus rau ib tug ceev-acting electromagnetic relay los yog solid-state hloov.
6. Fais fab Disconnection: Lub relay / hloov tam sim ntawd qhib cov kev sib cuag muab ob qho tib si nyob thiab nruab nrab conductors rau lub qhov (socket) qhov hluav taws xob, txiav tawm lub hwj chim hauv milliseconds (feem ntau tsawg dua 40ms rau 30mA cov khoom siv ntawm cov khoom seem tam sim no). Qhov kev cuam tshuam sai no tiv thaiv kom tsis txhob muaj hluav taws xob ua rau tuag taus lossis nres qhov hluav taws kub uas tshwm sim los ntawm cov hluav taws xob tsis tu ncua arcing los ntawm cov khoom siv hluav taws xob.
7. Rov pib dua: Thaum qhov ua txhaum raug tshem tawm, SRCD feem ntau tuaj yeem rov pib dua siv lub pob ntawm nws lub ntsej muag, rov ua kom lub zog rau lub qhov (socket).

3. Lub luag haujlwm tseem ceeb ntawm SRCDs niaj hnub
Niaj hnub SRCDs suav nrog ntau yam kev ua tau zoo tshaj li qhov tseem ceeb ntawm kev tshawb pom tam sim no:

• rhiab heev (IΔn): Qhov no yog qhov ntsuas qhov seem ntawm kev khiav hauj lwm tam sim no, qib ntawm SRCD yog tsim los mus ncig. Common rhiab heev muaj xws li:
  • High Sensitivity (≤ 30mA): Feem ntau rau kev tiv thaiv hluav taws xob poob siab. 30mA yog tus qauv rau kev tiv thaiv tus kheej. 10mA versions muaj kev tiv thaiv zoo dua, feem ntau siv hauv cov chaw kho mob lossis qhov chaw muaj kev pheej hmoo siab.
  • Nruab nrab rhiab heev (piv txwv li, 100mA, 300mA): Feem ntau yog siv rau kev tiv thaiv hluav taws kev pheej hmoo los ntawm kev pheej hmoo ntawm lub ntiaj teb leakage faults, feem ntau siv qhov chaw siab dua tom qab to yuav tsum tau (xws li, ib co industrial machinery, cov laus installation). tuaj yeem muab kev tiv thaiv kev poob siab.
• Hom Fault Current Detection: SRCDs yog tsim los teb rau ntau hom kev seem seem:
  • Hom AC: Txheeb xyuas qhov hloov pauv sinusoidal seem tam sim no nkaus xwb. Feem ntau cov khoom siv thiab kev lag luam, tsim nyog rau kev tiv thaiv dav dav, capacitive, thiab inductive loads yam tsis muaj hluav taws xob.
  • Hom A: Tshawb xyuas ob qho AC seem tam sim nothiabpulsating DC residual tam sim no (xws li, los ntawm cov khoom siv nrog ib nrab-yoj rectification zoo li qee cov cuab yeej hluav taws xob, lub teeb dimmers, tshuab ntxhua khaub ncaws). Qhov tseem ceeb rau niaj hnub ib puag ncig nrog cov khoom siv hluav taws xob. Nce ua tus qauv.
  • Hom F: Tshwj xeeb yog tsim los rau cov khoom siv hluav taws xob uas muaj ib theem sib txawv ntawm qhov ceev tsav (inverters) pom hauv cov khoom siv xws li tshuab ntxhua khaub ncaws, cua txias, thiab cov cuab yeej hluav taws xob. Muab kev tiv thaiv kev tiv thaiv zoo rau kev cuam tshuam tsis zoo tshwm sim los ntawm cov hluav taws xob ntau zaus uas tsim los ntawm cov tsav no.
  • Hom B: Pom AC, pulsating DC,thiabdu DC residual tam sim no (xws li, los ntawm PV inverters, EV chargers, loj UPS systems). Feem ntau siv hauv kev lag luam lossis kev lag luam tshwj xeeb.
• Lub Sijhawm Tshav Dav Hlau: Lub sijhawm siab tshaj plaws ntawm qhov seem tam sim no tshaj IΔn thiab kev sib txuas hluav taws xob. Tswj los ntawm cov qauv (piv txwv li, IEC 62640). Rau 30mA SRCDs, qhov no feem ntau yog ≤ 40ms ntawm IΔn thiab ≤ 300ms ntawm 5xIΔn (150mA).
• Rated Tam sim no (Nyob rau hauv): Qhov siab tshaj plaws tsis tu ncua tam sim no lub SRCD lub qhov (socket) muaj kev nyab xeeb (piv txwv li, 13A, 16A).
• Kev tiv thaiv overcurrent (Optional but Common): Ntau SRCDs suav nrog kev tiv thaiv kev tiv thaiv overcurrent, feem ntau yog ib qho fuse (piv txwv li, 13A BS 1362 fuse hauv UK plugs) lossis qee zaum me me Circuit Court breaker (MCB), tiv thaiv lub qhov (socket) thiab ntsaws-hauv cov khoom siv los ntawm overload thiab luv-circuit tam sim no.Qhov tseem ceeb, qhov fuse no tiv thaiv SRCD Circuit Court nws tus kheej; SRCD tsis hloov qhov kev xav tau ntawm MCBs nyob rau hauv cov neeg siv khoom.
• Tamper-Resistant Shutters (TRS): Yuav tsum tau ua nyob rau hauv ntau thaj tsam, lub caij nplooj ntoos hlav-loaded shutters thaiv kev nkag mus rau cov neeg nyob, tshwj tsis yog tias ob lub pins ntawm lub ntsaws ntsaws rau tib lub sijhawm, txo qhov kev pheej hmoo ntawm hluav taws xob poob siab, tshwj xeeb tshaj yog rau cov menyuam yaus.
• Kuaj Khawm: Ib qho yuav tsum tau ua kom cov neeg siv sijhawm ib ntus simulate qhov kev ua txhaum tam sim no thiab xyuas kom meej tias lub tshuab ua haujlwm tsis zoo. Yuav tsum tau nias tsis tu ncua (piv txwv li, txhua hli).
• Kev Taw Qhia: Cov cim pom pom (feem ntau lub pob xim lossis tus chij) qhia seb SRCD puas nyob rau hauv "ON" (lub zog muaj), "OFF" (manually switched off), los yog "Tripped" (tuaj kuaj pom) xeev.
• Mechanical & Hluav Taws Xob Durability: Tsim los tiv thaiv ntau tus neeg kho tshuab kev ua haujlwm (plug insertions / tshem tawm) thiab kev ua haujlwm hluav taws xob (tripping cycles) raws li cov qauv (xws li IEC 62640 yuav tsum tau ≥ 10,000 mechanical operations).
• Kev tiv thaiv ib puag ncig (IP Ratings): Muaj nyob rau hauv ntau yam IP (Ingress Protection) kev ntsuas rau qhov chaw sib txawv (xws li, IP44 rau kev sib tsoo hauv chav ua noj / chav dej, IP66 / 67 rau kev siv sab nraum zoov / kev lag luam).

4. Ntau hom kev siv ntawm SRCDs: Kev Tiv Thaiv Lub Hom Phiaj Qhov Xav Tau
Qhov tshwj xeeb plug-and-play xwm ntawm SRCDs ua rau lawv muaj ntau yam zoo kawg nkaus rau kev txhim kho kev nyab xeeb hauv suav tsis txheeb:

• Chaw nyob:
  • Cov cheeb tsam uas muaj kev pheej hmoo siab: Muab kev tiv thaiv tseem ceeb hauv chav dej, chav ua noj, chaw nres tsheb, chaw ua haujlwm, thiab cov qhov (sockets, patios) uas muaj kev pheej hmoo ntawm hluav taws xob poob siab vim muaj dej nyob hauv av, cov khoom siv hauv tsev, lossis cov khoom siv nqa tau. Qhov tseem ceeb yog cov neeg siv khoom tseem ceeb RCDs tsis tuaj, ua yuam kev, lossis tsuas yog muab kev tiv thaiv thaub qab (S Hom).
  • Retrofitting Older Installations: Txhim kho kev nyab xeeb hauv tsev yam tsis muaj kev tiv thaiv RCD lossis qhov tsuas yog qhov kev pab cuam nkaus xwb, tsis muaj nqi thiab cuam tshuam ntawm kev xa rov qab lossis hloov cov neeg siv khoom.
  • Kev Tiv Thaiv Cov Khoom Siv Tshwj Xeeb: Tiv thaiv cov khoom muaj txiaj ntsig zoo lossis cov khoom siv tseem ceeb xws li cov cuab yeej hluav taws xob, tshuab txiav nyom, tshuab ntxhua khaub ncaws, lub tshuab tso cua sov, lossis cov twj tso dej thoob dej yug ntses ncaj qha ntawm qhov chaw siv.
  • Kev xav tau ib ntus: Muab kev nyab xeeb rau cov cuab yeej siv thaum kho dua tshiab lossis DIY tej yaam num.
  • Kev Nyab Xeeb Rau Me Nyuam: TRS shutters ua ke nrog RCD kev tiv thaiv muaj kev ruaj ntseg tseem ceeb hauv tsev nrog cov menyuam yaus.
• Kev lag luam ib puag ncig:
  • Cov Chaw Ua Haujlwm: Tiv thaiv cov khoom siv IT rhiab heev, cov khoom siv hluav taws xob, lub tshuab hluav taws xob, thiab cov tshuab ntxhua khaub ncaws, tshwj xeeb tshaj yog nyob rau hauv cov cheeb tsam uas tsis tau them los ntawm RCDs ruaj khov lossis qhov chaw tsis txaus siab ntawm lub ntsiab RCD yuav ua rau muaj kev cuam tshuam loj heev.
  • Khw Muag Khoom & Tsev Kho Mob: Ua kom muaj kev nyab xeeb rau cov khoom siv, cov khoom siv ua noj ua haus (khoom noj sov), cov khoom siv tu, thiab cov teeb pom kev zoo / khoom siv sab nraum zoov.
  • Kev kho mob (tsis tseem ceeb): Muab kev tiv thaiv hauv chaw kho mob, kev phais hniav (tsis yog IT), chav tos, thiab chaw tswj hwm rau cov cuab yeej txheem. (Nco tseg: Kev kho mob IT systems hauv kev ua yeeb yam yuav tsum muaj kev sib cais tshwj xeeb hloov pauv, tsis yog tus qauv RCDs / SRCDs).
  • Cov Tsev Kawm Ntawv Kev Kawm: Qhov tseem ceeb hauv chav kawm, chav kuaj (tshwj xeeb yog cov khoom siv nqa tau yooj yim), kev cob qhia, thiab IT suites los tiv thaiv cov tub ntxhais kawm thiab cov neeg ua haujlwm. TRS yog qhov tseem ceeb ntawm no.
  • Cov Chaw Ua Si: Tiv thaiv cov cuab yeej hauv gyms, thaj chaw ua luam dej (raws li IP-rated), thiab chav hloov pauv.
• Muaj & Kev Tsim Kho Chaw:
  • Kev Tsim Kho & Demolition: Qhov tseem ceeb tshaj plaws. Fais fab cov cuab yeej nqa tau yooj yim, teeb pom kev zoo, lub tshuab hluav taws xob, thiab chaw ua haujlwm hauv chaw ua haujlwm hnyav, ntub dej, thiab hloov pauv ib puag ncig uas muaj kev puas tsuaj ntawm cable. Portable SRCDs lossis cov kev sib xyaw ua ke rau hauv cov khoom faib khoom yog cov cawm siav.
  • Kev cob qhia & Kev Tu: Tiv thaiv cov cuab yeej nqa tau yooj yim, cov cuab yeej ntsuas, thiab cov tshuab hauv cov chaw tu lub Hoobkas lossis cov chaw ua haujlwm me me.
  • Kev teeb tsa ib ntus: Cov xwm txheej, kev nthuav qhia, cov yeeb yaj kiab - txhua qhov chaw yuav tsum muaj lub zog ib ntus nyob rau hauv qhov chaw muaj kev phom sij.
  • Kev tiv thaiv thaub qab: Muab cov txheej txheem ntxiv ntawm kev nyab xeeb qis los ntawm RCDs ruaj khov, tshwj xeeb tshaj yog rau cov khoom siv nqa tau yooj yim.
• Cov ntawv thov tshwj xeeb:
  • Marine & Caravans: Qhov tseem ceeb rau kev tiv thaiv hauv nkoj, yachts, thiab caravans / RVs qhov twg cov tshuab hluav taws xob ua haujlwm nyob ze rau dej thiab cov hulls / chassis.
  • Cov Chaw Cov Ntaub Ntawv (Peripheral Equipment): Tiv thaiv cov saib, cov khoom siv ntxiv, lossis cov khoom siv ib ntus ntsaws rau hauv ze ntawm cov neeg rau zaub mov racks.
  • Kev Siv Hluav Taws Xob Txuas Ntxiv (Portable): Tiv thaiv cov cuab yeej siv tau yooj yim siv thaum lub sij hawm teeb tsa lossis kev saib xyuas cov hnub ci vaj huam sib luag lossis cov cua turbines me me.

5. Cov khoom lag luam zoo ntawm SRCDs
SRCDs muab cov txiaj ntsig sib txawv uas ua rau lawv lub luag haujlwm hauv cov tswv yim kev nyab xeeb hluav taws xob niaj hnub:

1. Targeted, Localized Protection: Lawv qhov zoo tshaj plaws. Lawv muab kev tiv thaiv RCDnkaus xwbrau cov khoom siv ntsaws rau hauv lawv. Ib qho txhaum ntawm ib qho khoom siv mus ncig tsuas yog tias SRCD, tawm hauv lwm cov circuits thiab cov khoom siv tsis cuam tshuam. Qhov no tiv thaiv qhov tsis tsim nyog thiab cuam tshuam lub zog poob thoob plaws tag nrho lub voj voog lossis lub tsev - qhov teeb meem tseem ceeb nrog RCDs ruaj khov ("kev tsis sib haum xeeb").
2. Retrofit Simplicity & Flexibility: Kev teeb tsa feem ntau yog yooj yim li ntsaws SRCD rau hauv tus qauv qhov (socket-outlet) uas twb muaj lawm. Tsis xav tau cov kws tshaj lij hluav taws xob tsim nyog (hauv ntau thaj tsam rau hom plug-in), kev hloov pauv kev sib txuas, lossis kev hloov kho cov neeg siv khoom. Qhov no ua rau kev txhim kho kev nyab xeeb yooj yim heev thiab siv tau zoo, tshwj xeeb tshaj yog nyob rau hauv cov khoom qub.
3. Portability: Plug-in SRCDs tuaj yeem txav tau yooj yim mus rau txhua qhov chaw uas xav tau kev tiv thaiv ntau tshaj. Nqa nws los ntawm chav nres tsheb mus rau lub vaj, lossis los ntawm ib txoj haujlwm tsim kho mus rau lwm qhov.
4. Tus Nqi-Kev Ua Tau Zoo (Ib Qhov Kev Siv): Thaum lub tsev nqi ntawm SRCD siab dua li tus qauv qhov (socket), nws yog qhov qis dua tus nqi ntawm kev txhim kho RCD Circuit Court tshiab lossis hloov kho cov neeg siv khoom, tshwj xeeb tshaj yog thaum kev tiv thaiv tsuas yog xav tau ntawm ob peb lub ntsiab lus tshwj xeeb.
5. Txhim khu kev nyab xeeb rau cov chaw muaj kev pheej hmoo siab: Muab kev tiv thaiv tseem ceeb uas qhov kev pheej hmoo loj tshaj (chaw da dej, chav ua noj, sab nraum zoov, kev cob qhia), ntxiv lossis hloov rau RCDs ruaj khov uas yuav tsis npog cov cheeb tsam no ib leeg.
6. Ua raws li Cov Qauv Niaj Hnub Nyoog: Ua kom muaj kev sib ntsib nruj kev nyab xeeb hluav taws xob (xws li IEC 60364, cov kev cai hauv lub tebchaws xws li BS 7671 hauv UK, NEC hauv Asmeskas nrog GFCI cov khoom siv uas zoo sib xws) uas tswj RCD kev tiv thaiv rau cov qhov hluav taws xob tshwj xeeb thiab qhov chaw, tshwj xeeb tshaj yog nyob rau hauv kev tsim kho tshiab thiab kho dua tshiab. SRCDs tau lees paub meej hauv cov qauv xws li IEC 62640.
7. User-Friendly Verification: Lub pob ntsuas kev sib koom ua ke tso cai rau cov neeg siv tsis yog cov cuab yeej siv tau yooj yim thiab tsis tu ncua paub meej tias lub cuab yeej tiv thaiv kev ua haujlwm tau ua haujlwm.
8. Tamper-Resistant Shutters (TRS): Integrated me nyuam txoj kev nyab xeeb yog ib qho qauv zoo, txo qhov kev pheej hmoo ntawm kev poob siab los ntawm cov khoom raug tso rau hauv lub qhov (socket).
9. Device-Specific Sensitivity: Tso cai xaiv qhov pom kev zoo (piv txwv li, 10mA, 30mA, Hom A, F) rau cov khoom siv tshwj xeeb raug tiv thaiv.
10. Txo qhov tsis zoo rau kev tsis txaus siab: Vim tias lawv tsuas yog saib xyuas cov dej ntws tam sim no ntawm ib qho khoom siv xwb, lawv feem ntau tsis tshua muaj kev cuam tshuam los ntawm kev sib xyaw ua ke, tsis muaj teeb meem tom qab xau ntawm ntau yam khoom siv hauv Circuit Court tiv thaiv los ntawm ib qho RCD ruaj khov.
11. Kev Nyab Xeeb Lub Hwj Chim Ib Nrab: Qhov kev daws teeb meem zoo tshaj plaws rau kev ua kom muaj kev nyab xeeb thaum siv txuas txuas ntxiv los yog cov tshuab hluav taws xob rau kev xav tau hluav taws xob ib ntus ntawm cov chaw lossis cov xwm txheej.

6. SRCDs vs. Tsau RCDs: Lub luag haujlwm ntxiv
Nws yog ib qho tseem ceeb kom nkag siab tias SRCDs tsis yog hloov pauv rau RCDs ruaj khov hauv cov neeg siv khoom, tab sis yog qhov kev daws teeb meem ntxiv:

• Tsau RCDs (hauv Consumer Unit):
  • Tiv thaiv tag nrho cov kab hluav taws xob (ntau lub qhov (sockets, teeb).
  • Yuav tsum muaj kev tshaj lij installation.
  • Muab qhov tseem ceeb tiv thaiv kev tiv thaiv kab mob thiab cov khoom siv ruaj khov.
  • Ib qho txhaum cai tuaj yeem cuam tshuam lub zog rau ntau qhov hluav taws xob / khoom siv.
• SRCDs:
  • Tiv thaiv tsuas yog ib qho khoom siv txuas rau hauv lawv.
  • Ib qho yooj yim plug-in installation (portable hom).
  • Muab cov phiaj xwm tiv thaiv rau qhov chaw muaj kev pheej hmoo siab thiab cov khoom siv nqa tau yooj yim.
  • Ib qho txhaum cais tsuas yog cov khoom siv faulty xwb.
  • Muab portability thiab retrofit yooj yim.

Txoj kev ruaj ntseg hluav taws xob muaj zog tshaj plaws feem ntau siv kev sib xyaw ua ke: ruaj RCDs muab kev tiv thaiv hluav taws xob hauv hluav taws xob (muaj peev xwm ua RCBOs rau ib tus neeg xaiv hluav taws xob) ntxiv los ntawm SRCDs ntawm cov ntsiab lus muaj kev pheej hmoo siab lossis rau cov khoom siv tshwj xeeb. Qhov txheej txheem txheej txheem no txo ​​qis kev pheej hmoo thiab cuam tshuam.

7. Cov Qauv thiab Cov Cai: Ua kom muaj kev nyab xeeb thiab ua haujlwm zoo
Kev tsim, kev sim, thiab kev ua haujlwm ntawm SRCDs yog tswj hwm los ntawm cov qauv nruj thoob ntiaj teb thiab lub teb chaws. Tus qauv tseem ceeb yog:

• IEC 62640 Ua raws li nram no:Residual tam sim no cov khoom siv nrog lossis tsis muaj kev tiv thaiv overcurrent rau qhov hluav taws xob-qhov hluav taws xob (SRCDs).Tus qauv no txhais cov kev cai tshwj xeeb rau SRCDs, suav nrog:
  • Kev tsim kho vaj tse
  • Cov yam ntxwv ntawm kev ua tau zoo (rhiab heev, lub sijhawm tripping)
  • Cov txheej txheem kuaj (mechanical, hluav taws xob, ib puag ncig)
  • Kos npe thiab cov ntaub ntawv

SRCDs yuav tsum tau ua raws li cov qauv tsim nyog rau cov khoom siv hluav taws xob (xws li BS 1363 hauv UK, AS / NZS 3112 hauv Australia / NZ, NEMA configurations hauv Teb Chaws Asmeskas) thiab cov qauv RCD dav dav (xws li IEC 61008, IEC 61009). Kev ua raws cai ua kom lub cuab yeej ua tau raws li qhov tseem ceeb ntawm kev nyab xeeb thiab kev ua haujlwm zoo. Nrhiav cov ntawv pov thawj los ntawm lub cev lees paub (xws li CE, UKCA, UL, ETL, CSA, SAA).

Xaus: Ib txheej tseem ceeb hauv Kev Nyab Xeeb Net
Socket-Outlet Residual Current Devices sawv cev rau kev hloov pauv muaj zog thiab ua tau zoo hauv kev siv tshuab hluav taws xob. Los ntawm kev sib koom ua ke ntawm kev txuag hluav taws xob tam sim no ncaj qha mus rau hauv qhov hluav taws xob qhov hluav taws xob, SRCDs xa cov phiaj xwm siab, hloov tau yooj yim, thiab yooj yim deployable tiv thaiv kev pheej hmoo ntawm hluav taws xob poob siab thiab hluav taws. Lawv qhov zoo - kev tiv thaiv hauv cheeb tsam tshem tawm kev cuam tshuam tag nrho-circuit mus ncig, kev siv zog rov qab, kev txav mus los, kev ua haujlwm tau zoo rau cov ntsiab lus tshwj xeeb, thiab ua raws li cov cai niaj hnub kev nyab xeeb - ua rau lawv tseem tsis tau muaj nyob hauv thaj chaw, kev lag luam, kev lag luam, thiab chaw tshwj xeeb.

Txawm hais tias kev txhim kho lub tsev laus uas tsis muaj RCDs, kev tiv thaiv cov cuab yeej hluav taws xob ntawm qhov chaw tsim kho, tiv thaiv lub vaj lub pas dej, lossis tsuas yog ntxiv txheej ntxiv ntawm kev nyab xeeb rau menyuam yaus chav pw, SRCD sawv ua tus saib xyuas ceev faj. Nws tso cai rau cov neeg siv los tswj hwm lawv cov hluav taws xob kev nyab xeeb ntawm qhov chaw siv. Raws li cov tshuab hluav taws xob tau dhau los ua qhov nyuaj thiab cov qauv kev nyab xeeb txuas ntxiv mus, SRCD yuav tsis xav txog qhov tseem ceeb ntawm cov thev naus laus zis, kom ntseeg tau tias kev siv hluav taws xob tsis tuaj ntawm tus nqi ntawm kev nyab xeeb. Kev nqis peev hauv SRCDs yog kev nqis peev hauv kev tiv thaiv kev kub ntxhov thiab tiv thaiv qhov tseem ceeb tshaj plaws.