Ob peb qhov teeb meem kub hauv qhov tam sim no tiv thaiv cov khoom tiv thaiv SPD
1. Kev faib cov kev ntsuas ntawm kev ntsuas ntsuas
Rau cov txheej txheem tiv thaiv txheej txheem tiv thaiv SPD kuaj, muaj kev sib cav sib cav hauv tsev thiab txawv teb chaws txog cov xeem pawg ntawm Chav I (Chav B, Hom 1), feem ntau yog nyob ntawm txoj kev ntawm simulating ncaj xob laim impulse paug, kev tsis sib haum xeeb ntawm IEC thiab IEEE pawg neeg :
(1) IEC 61643-1, hauv Chav I (Chav B, Hom 1) kev ntsuas tam sim no ntawm cov khoom siv tiv thaiv kev nrawm, 10 / 350µs yoj yog qhov ntsuas yoj.
(2) IEEE C62.45 'IEEE Cov hluav taws xob tiv thaiv hluav taws xob tiv thaiv qis - Ntu 11 Tshaj tawm cov khoom siv tiv thaiv txuas nrog cov hluav taws xob muaj hluav taws xob tsawg - Cov kev xav tau thiab kev sim ua qauv' txhais tau meej txog 8 / 20µs raws li qhov ntsuas ntsuas.
Kev tawm tsam ntawm 10 / 350µs waveform ntseeg hais tias yuav kom 100% kev tiv thaiv thaum lub sij hawm xob laim, qhov tsis muaj teeb meem loj tshaj plaws yuav tsum tau siv los ntsuas cov khoom tiv thaiv xob laim. Siv 10 / 350µs yoj siv los ntsuas LPS (Txoj Kev Tiv Thaiv Xob Tiv Thaiv) kom paub tseeb tias nws tsis ua rau lub cev puas los ntawm xob laim. Thiab cov neeg tshaj tawm ntawm 8 / 20µs waveform ntseeg hais tias tom qab ntau tshaj 50 xyoo ntawm kev siv, yoj tawm qhia tau qhov kev ua tau zoo heev.
Lub Kaum Hlis 2006, cov neeg sawv cev ntawm IEC thiab IEEE sib koom tes thiab tau teev ntau cov ncauj lus txog kev tshawb nrhiav.
GB18802.1 lub zog muab hluav taws xob SPD muaj cov kab kev ntsuas ntawm chav kawm I, II, thiab III kev faib tawm, saib Daim Ntawv 1.
Kem 1: Qeb I, II thiab III xeem pawg
| xeem | Cov phiaj xwm sim | Kuaj tsis |
| Chav Kawm I | Iimp | Incov, Q, W / R |
| Hoob II | Imax | 8 / 20µs |
| Chav Kawm III | Uoc | 1.2 / 50µs -8 / 20µs |
Tebchaws Asmeskas tau txiav txim siab ob qho xwm txheej hauv qab peb qhov qauv kawg no:
IEEE C62.41. 1 'IEEE Phau Ntawv Qhia Txog Qhov Kev Ua Kom Muaj Kev Nyuaj Siab Thaj Chaw hauv Cov Hluav Taws Xob uas tsis tshua muaj hluav taws xob (1000V thiab Tsawg Me Me)'
IEEE C62.41. 2 'IEEE ntawm Kev Pom Zoo Kev Coj Tus Cwj Pwm ntawm qhov nce siab nyob hauv qhov tsis tshua muaj hluav taws xob (1000V thiab Tsawg Dua) AC fais fab voj voog', 2002
IEEE C62.41. 2 'IEEE ntawm Kev Pom Zoo Ntawm Kev Coj Ua rau Kev Ntsuas Ntsuas rau Cov Khoom Siv Txuas nrog Qhov Hluav Taws Xob Qes Qes (1000V thiab Tsawg Dua) AC Lub Hwj Chim Kev Ncig', 2002
Qhov xwm txheej 1: Xob laim tsis ncaj qha cuam tshuam lub tsev.
Qhov xwm txheej 2: Nws yog qhov tsis tshua muaj tshwm sim: xob laim ntaus ntawm lub tsev ncaj qha lossis hauv av ntawm lub tsev yog ntaus hluav taws xob.
Rooj ntawv 2 pom zoo kom ua tus sawv cev rau cov qauv hloov, thiab Cov Lus 3 muab cov txiaj ntsig sib thooj sib xws ua raws txhua qeb.
Rooj ntawv 2: Chaw AB C (Rooj Plaub Zaum 1) Siv Tau Cov Qauv Txuj thiab Cov Lus Kuaj Dua Ntxiv thiab Cov Qub 2 Cov Lus Cim.
| Qhov xwm txheej 1 | Qhov xwm txheej 2 | ||||||
| Hom Chaw | 100Khz co nthwv dej | Ua ke yoj | Cais voltage / tam sim no | EFT impulse 5/50 ns | 10/1000 µs ntev-yoj | Inductive txuas | Kev sib txuas lus ncaj qha |
| A | Standard | Standard | - | ntxiv | ntxiv | Lub nplhaib ntawm B hom | Kev sojntsuam los ntawm tus kheej-ib-tus-kis |
| B | Standard | Standard | - | ntxiv | ntxiv | ||
| C qes | yeem | Standard | - | yeem | ntxiv | ||
| C siab | yeem | Standard | yeem | - | |||
Rooj 3: SPD qhov xwm txheej thaum tawm 2 Xeem cov ntsiab lus A, B
| Raug qib | 10 / 350µs rau txhua hom SPD | Xaiv 8 / 20µs rau SPD nrog nonlinear voltage limiting Cheebtsam (MOV) C |
| 1 | 2 kA | 20 kA |
| 2 | 5 kA | 50 kA |
| 3 | 10 kA | 100 kA |
| X | Ob tog sib tham los xaiv qhov tsawg dua lossis ntau dua | |
Nco ntsoov:
A. Qhov kev ntsuas no tsuas yog txwv rau SPD tau nruab rau ntawm txoj kev tawm, uas txawv ntawm cov qauv thiab cov ncauj lus ntxiv hais hauv qhov kev pom zoo no, tsuas yog SPD.
B. Cov nqi saum toj no siv rau txhua qhov kev ntsuas qib ntawm cov theem ntau SPD.
C. Cov kev ua haujlwm zoo tshaj lij ntawm SPD nrog C qis dua qib qis tshaj 1 qhia tias ntsuas qis dua tuaj yeem xaiv.
"Nws tsis muaj qhov tshwj xeeb tshaj tawm yauv uas tuaj yeem sawv cev rau txhua qhov chaw ib puag ncig, yog li cov teeb meem tiag tiag hauv ntiaj teb yuav tsum tau yooj yim piv rau qee qhov yooj yim-rau-siv tus qauv ntsuas yoj. Yuav kom ua tiav qhov no, thaj chaw ib puag ncig raug faib los muab cov kab hluav taws xob thiab qhov tam sim no Cov duab hluav taws xob thiab qhov loj me tau raug xaiv thiaj li tsim nyog rau kev ntsuam xyuas qhov txawv kev muaj peev xwm ntawm cov khoom siv txuas nrog rau qhov hluav taws xob tsawg AC fais fab mov, thiab cov khoom siv dag zog thiab chaw puag ncig yuav tsum ua kom haum tau. ”
"Lub hom phiaj ntawm kev qhia tseeb cov kev faib tawm cov qauv ntsuas yog muab cov qauv tsim khoom siv thiab cov neeg siv khoom nrog cov qauv thiab cov qauv ntsuas yoj yuaj ntxiv thiab cov thaj tsam ib puag ncig. Cov txiaj ntsig zoo uas pom zoo rau cov qauv txheem kab yog yooj yim cov txiaj ntsig tau los ntawm kev ntsuam xyuas ntawm qhov ntau ntawm cov ntsuas ntsuas. Qhov yooj yim yuav ua kom rov ua dua thiab tau txais cov lus qhia tshwj xeeb rau qhov kev nce ntawm cov cuab yeej txuas nrog rau cov khoom siv hluav taws xob AC tsawg zog. "
Qhov ntsuas hluav taws xob voltage thiab tam sim no siv rau SPD impulse txwv voltage kuaj ntsuas ntawm kev sib txuas lus thiab xov tooj sib txuas tau pom muaj nyob hauv Rooj 4.
Rooj 4: Qhov ntsuas thiab qhov nthwv dej tam sim ntawm qhov cuam tshuam sim (Cov Lus 3 ntawm GB18802-1)
| Qeb tooj | Hom xeem | Qhib Circuit Court voltage UOC | Luv luv Circuit Court tam sim no Isc | Cov naj npawb ntawm cov ntawv thov |
A1 A2 | Qaug qeeb heev AC | ≥1kV (0.1-100) kV / S (Xaiv los ntawm Rooj 5) | 10A, (0.1-2) A / µs ≥1000µS (qhov dav) (Xaiv los ntawm Rooj 5) | - Ib hlis xwb |
B1 B2 B3 | Maj mam sawv | 1kV, 10/1000 1kV, lossis 4kV, 10/700 ≥1kV, 100V / µs | 100A, 10/100 25A, lossis 100A, 5/300 (10, 25, 100) A, 10/1000 | 300 300 300 |
Peb C1 C2 C3 | Cauj sawv | 0.5kV lossis 1kV, 1.2 / 50 (2,4,10) kV, 1.2 / 50 ≥1kV, 1kV / µs | 0.25kA lossis 0.5kA, 8/20 (1,2,5) kA, 8/20 (10,25,100) A, 10/1000 | 300 10 300 |
D1 D2 | Siab zog | ≥1kV ≥1kV | (0.5,1,2.5) kA, 10/350 1kA, lossis 2.5kA, 10/250 | 2 5 |
Nco tseg: Qhov cuam tshuam yog thov nruab nrab ntawm kab ntawv davhlau ya nyob twg thiab qhov davhlau ya nyob twg. Seb puas yuav ntsuas ntawm cov kab xaus yog txiav txim siab raws li haum. SPD rau kev siv hluav taws xob thiab SPD rau kev sib txuas xov tooj thiab lub teeb liab sib txuas ua ke yuav tsum tsim ib qho kev sib koom ua ke ntsuas kev ntsuas lub zog uas tuaj yeem sib phim nrog lub ntsuas hluav taws xob ntawm cov khoom siv.
2.Voltage hloov hom thiab voltage txwv hom
Hauv keeb kwm ntev, qhov hloov hluav taws xob thiab hom kev txwv voltage yog kev tsim kho, kev sib tw, kev ua tiav, kev tsim kho tshiab, thiab rov tsim kho dua. Huab cua qhov sib txawv ntawm hom hloov hluav taws xob tau siv dav dav hauv kaum xyoo dhau los, tab sis nws kuj ua rau ntau qhov kev puas tsuaj. Lawv yog:
(1) Qib qib (qib B) siv 10 / 350µs cov txim hluav taws xob hom SPD ua rau ntau cov chaw nres tsheb sib txuas lus cov cuab yeej sau cia txog kev puas tsuaj hluav taws xob loj heev.
(2) Vim lub sijhawm teb ntev ntawm lub txim hluav taws xob SPD ua rau xob laim, thaum lub hauv paus chaw nres tsheb tsuas yog muaj qhov sib txawv SPD, thiab tsis muaj lwm yam SPD siv rau qib thib ob (qib C) kev tiv thaiv, xob laim tam sim no yuav ua rau xob laim. pab hauv lub cuab yeej puas tsuaj.
(3) Thaum lub hauv paus pib siv B thiab C kev tiv thaiv ob-theem, qhov kis sib txawv SDP lub qeeb teb lub sijhawm rau xob laim yuav ua rau txhua tus xob laim hluav taws xob dhau ntawm C-qib voltage-txwv tus tiv thaiv, ua rau C-qib tus tiv thaiv puas los ntawm xob laim.
(4) Yuav muaj qhov muag tsis pom kev ntawm lub txim hluav taws xob ntawm kev sib koom tes ntawm lub zog sib txawv ntawm qhov sib txawv thiab lub siab-qhov txwv (qhov muag tsis pom txhais tau hais tias tsis muaj lub txim hluav taws xob hauv qhov tawm ntawm lub txim hluav taws xob), uas ua rau lub txim hluav taws xob txawv SPD tsis ua yeeb yam, thiab qib thib ob (theem C) tus tiv thaiv yuav tsum ua kom siab dua. Lub xob laim hluav taws xob tam sim no ua rau C-qib tus tiv thaiv raug puas los ntawm xob laim (txwv los ntawm thaj chaw ntawm lub chaw nres tsheb hauv paus, qhov kev txiav txim siab nyob nruab nrab ntawm ob tus ncej SPD xav tau txog 15 meters). Yog li, nws yog tsis yooj yim sua rau thawj qib los txais kev sib txawv hom SPD kom muaj kev koom tes zoo nrog C qib SPD.
(5) Qhov inductance tau txuas nrog hauv kev tiv thaiv ntawm ob theem ntawm kev tiv thaiv los ua qhov decoupling kev daws teeb meem los daws cov teeb meem ntawm kev tiv thaiv nyob deb ntawm ob theem ntawm SPD. Tej zaum muaj qhov tsis pom kev lossis qhov teeb meem xav txog ntawm ob qho. Raws li cov lus qhia: “Inductance yog siv los ua depletion tivthaiv thiab waveform Cov duab muaj qhov sib raug zoo. Txog qhov ntev ib nrab-tus nqi waveforms (xws li 10 / 350µs), qhov cuam tshuam rau qhov ntsuas tsis ua hauj lwm zoo tsis muaj txiaj ntsig (qhov tawg qhov sib txawv ntxiv rau cov inductor tsis tuaj yeem ua raws li kev tiv thaiv raws li cov hluav taws xob sib txawv thaum xob laim). Thaum noj cov khoom sib txuas, lub sijhawm nce siab thiab tus nqi siab ntawm cov ntsuas hluav taws xob yuav tsum raug txiav txim siab. " Ntxiv mus, txawm hais tias qhov inductance ntxiv, qhov teeb meem ntawm qhov sib txawv ntawm hom SPD voltage txog li 4kV tsis tuaj yeem daws tau, thiab kev ua haujlwm ntawm kev ua haujlwm qhia pom tias tom qab cov kis hom SPD thiab cov kis sib xyaw hom SPD txuas nrog hauv koob, C- qib 40kA module teeb tsa sab hauv lub tshuab hluav taws xob hloov hluav taws xob poob rau SPD Muaj ntau cov ntaub ntawv ntawm kev raug rhuav tshem los ntawm xob laim.
(6) Qhov nqi di / dt thiab du / dt ntawm qhov sib txawv ntawm hom-SPD yog qhov loj heev. Qhov cuam tshuam rau cov semiconductor Cheebtsam hauv cov khoom siv tiv thaiv nyob tom qab thawj theem SPD yog tshwj xeeb pom tau.
(7) Txim txawv SPD tsis muaj qhov tsis ua kom tsis muaj nuj nqi
(8) Lub txim hluav taws xob hom SPD tsis tuaj yeem paub txog lub luag haujlwm ntawm kev ceeb toom kev puas tsuaj thiab qhov txhaum ntawm lub teeb liab (tam sim no nws tsuas yog pom tau los ntawm LED los qhia qhov ua haujlwm ntawm nws txoj haujlwm pabcuam, thiab tsis cuam tshuam qhov tsis zoo thiab puas tsuaj ntawm lub xob laim hluav taws xob. tiv thaiv), yog li nws yog Rau cov chaw nres tsheb tsis siv neeg, tiv thaiv SPD tsis tuaj yeem siv tau.
Cov ntsiab lus xaus: ntawm qhov pom ntawm cov tsis sib xws, ntsuas, thiab cov haujlwm ua haujlwm xws li cov siab seem, qhov deb ntawm qhov chaw nyob, lub txim hluav taws xob, lub sijhawm teb, tsis muaj lub suab ceeb toom puas tsuaj, thiab tsis muaj txhaum rau cov chaw taws teeb, kev siv hluav taws xob SPD hauv chaw nres tsheb nres kev khiav haujlwm nyab xeeb ntawm kev sib txuas lus Cov Teeb Meem.
Txawm li cas los xij, nrog kev tsim kho txuas ntxiv ntawm cov thev naus laus zis, qhov khoob khoob-hom SPD txuas ntxiv kom kov yeej nws qhov kev ua tsis tiav, kev siv SPD hom no tseem qhia txog qhov zoo dua. Hauv 15 lub xyoo dhau los, ntau cov kev tshawb fawb thiab kev tsim kho tau ua tiav ntawm cov huab cua qhov sib txawv (saib Cov Lus 5):
Hais txog kev ua tau zoo, lub cim tshiab ntawm cov khoom muaj qhov zoo ntawm qhov tsis tshua muaj hluav taws xob, muaj peev xwm ntws loj, thiab muaj qhov loj me. Los ntawm kev thov cov micro-kis ua rau thev naus laus zis, nws tuaj yeem paub qhov "0" nrug sib piv nrog SPD lub zog ntsuas thiab qhov sib xyaw ntawm qhov siab-txwv rau SPD. Nws kuj them rau nws qhov tsis muaj peev xwm teb tau zoo thiab ua rau muaj txiaj ntsig zoo ntawm kev teeb tsa ntawm kev tiv thaiv xob laim lub nruab. Hauv kev ua haujlwm, lub zog tiam tshiab ntawm cov khoom tuaj yeem lav qhov kev nyab xeeb zoo ntawm tag nrho cov khoom los ntawm kev saib xyuas kev ua haujlwm ntawm cov kis hauv Circuit Court. Cov cuab yeej ua kom sov tsis zoo raug ntsia hauv cov khoom kom tsis txhob hlawv ntawm lub plhaub sab nraud; lub tshuab qhib qhov loj ntawm cov cuab yeej tau saws nyob rau hauv qhov ntsuas hluav taws xob kom tsis txhob ntws tawm mus txuas ntxiv tom qab xoom hla. Nyob rau tib lub sijhawm, nws tseem tuaj yeem muab cov teeb liab ua kom pom lub suab ceeb toom kom xaiv qhov sib npaug ntawm lub xov hluav taws xob sib xws, thiab txuas ntxiv lub neej.
Rooj ntawv 5: Kev tsim kho ntawm qhov sib txawv
| S / N | xyoo | Main nta | lus hais |
| 1 | 1993 | Tsim kom muaj qhov sib txawv "V" uas hloov los ntawm me me mus rau loj, thiab teeb tsa cov kua paug tawm ntawm cov kwj deg kawg raws li qhov cais kom pab tau qhov ua haujlwm tsis tshua muaj hluav taws xob thiab tawm kom txog thaum muaj qhov sib txawv, siv hluav taws xob thiab qhov chaw qauv thiab cov khoom hauv lub xyoo 1993. . Ua cov khoom siv lev mus rau sab nraud, tsim kev sib quas ntus thiab tua cov arc. Cov khoom siv hluav taws xob thaum ntxov sib txawv muaj qhov hluav taws xob ntau thiab qhov sib txawv loj. |  |
| 2 | 1998 | Kev siv hluav taws xob teeb meem hluav taws xob, tshwj xeeb tshaj yog siv cov hloov pauv, kom paub txog cov txiaj ntsig kev pabcuam. Nws zwm rau lub nquag ua rau muaj qhov sib txawv, uas yog kev txhim kho ntawm qhov ua kom lub siab ua paug tawm. Ua tau zoo txo qhov tawg voltage. Nws belongs rau cov mem tes trigger thiab tsis ruaj khov. |  |
| 3 | 1999 | Qhov sib txawv paug tawm los ntawm lub thoob qhov hloov (nquag ua los ntawm lub tshuab hloov hluav taws xob), tus qauv tsim raws li tus qauv kaw ua ib nrab, thiab zoo li lub tshuab raj zoo li lub voj voos lossis arc zoo li hloov tau los ntawm me me rau loj, thiab phau ntawv qhia huab cua zawj muab nyob rau sab kom pab txhawb kev kos duab thiab raug elongated Cov hluav taws xob arc yog extinguished thiab cov qauv kaw tuaj yeem tau sau nrog arc extinguishing roj. Nws yog txoj kev txhim kho ntawm qhov ntxov tawm kis hluav taws xob. Piv nrog rau qhov ib txwm kaw qhov sib txawv ntawm qhov khoob, arc-puab lossis lub voj voos ua kom zoo dua qhov chaw thiab electrode, uas yog qhov tsim kom muaj qhov ntim tsawg dua. Cov hluav taws xob electrode yog qhov me me, lub peev xwm cuam tshuam tsis txaus, |  |
| 4 | 2004 | Koom tes nrog cov micro-gap triggering thev naus laus zis, txais yuav qhov chaw deb deb chaw electrode thiab kauv channel txias arc extinguishing tshuab, Txhim kho tau zoo dua tuaj yeem siv tshuab thev naus laus zis thiab cuam tshuam lub peev xwm, kev siv lub tshuab thev naus laus zis yog qhov ruaj khov dua thiab ntseeg tau. |  |
| 5 | 2004 | Txhim kho cov hluav taws xob tiv thaiv hluav taws xob txhawm rau los tsim cov txheej txheem tiv thaiv hluav taws xob tiv thaiv uas ua tau raws li qhov yuav tsum tau ua ntawm Class B thiab Class C kev tiv thaiv. Cov qauv tsim los ntawm kev tawm ntawm cov qhov khoob, cov qauv ua los ntawm kev ntsuas hluav taws xob, lub hauv paus thiab cov cuab yeej tsis zoo yog cov kev sib koom ua ke rau ntau txoj hauv kev los ua overvoltage tiv thaiv cov cuab yeej |  |
Daim ntawv qhia kev loj hlob khiav
3. Cov khoom zoo sib xws thiab sib txawv ntawm kev sib txuas xov tooj SPD thiab kev siv fais fab SPD
Rooj 6: Qhov zoo sib xws thiab qhov sib txawv ntawm kev sib txuas lus hauv xov tooj SPD thiab kev siv fais fab SPD
| project | Lub Zog SPD | Telecom SPD TSO |
| Xa | zog | Cov ntaub ntawv, analog, lossis digital. |
| Cov qeb fais fab | Fais fab tuag zaus AC lossis DC | Ntau cov kev khiav hauj lwm zaus los ntawm DC rau UHF |
| Kev khiav hauj lwm Voltage | High | Qis (saib cov lus hauv qab) |
| Txoj cai tiv thaiv | Rwb thaiv tsev ua kom sib haum SPD tiv thaiv qib ≤ qib siab thev kom txog khoom | Electromagnetic compatibility surge kev tiv thaiv kab mob SPD tiv thaiv qib ≤ qib siab tiv thaiv cov cuab yeej tsis tuaj yeem cuam tshuam txog teeb liab kis |
| Standard | GB / T16935.1 / IEC664-1 | GB / T1762.5 IEC61000-4-5 |
| Kuaj waveform | 1.2 / 50µs lossis 8 / 20µs | 1.2 / 50µs -8 / 20µs |
| Circuit Court impedance | Tsawg | High |
| Neeg Txhaum Txim | muaj | Tsis yog |
| Lub Nroog Cheeb Tsam | MOV thiab hloov hom | GDT, ABD, TSS |
Rooj 7: Feem ntau ua hauj lwm voltage ntawm kev sib txuas lus SPD
| Tsis | Kev sib txuas lus kab hom | Ua hauj lwm voltage (V) | SPD ntau qhov ua haujlwm voltage (V) | Feem pua (B / S) | interface hom |
| 1 | DDN / Xo25 / Ncej Txuas | <6, lossis 40-60 | 18 los yog 80 | 2 M lossis tsawg dua | RJ / ASP |
| 2 | xDSL | <6 | 18 | 8 M lossis tsawg dua | RJ / ASP |
| 3 | 2M Digital tshaj tawm | <5 | 6.5 | 2 M | Coaxial NCO |
| 4 | ISDN | 40 | 80 | 2 M | RJ |
| 5 | Analog tus xov tooj kab | <110 | 180 | 64 K | RJ |
| 6 | 100 M Ethernet | <5 | 6.5 | 100 M | RJ |
| 7 | Coaxial Ethernet | <5 | 6.5 | 10 M | Coaxial BNC Coaxial N |
| 8 | RS232 | <12 | 18 | SD | |
| 9 | RS422 / 485 | <5 | 6 | 2 M | ASP / SD |
| 10 | Video kab | <6 | 6.5 | Coaxial NCO | |
| 11 | Coaxial NCO | <24 | 27 | ASP |
4. Kev koom tes ntawm kev tiv thaiv sab nraud-tshaj tam sim no thiab SPD
Yuav tsum muaj rau kev tiv thaiv dhau-tam sim no (Circuit Court breaker lossis fuse) hauv lub tshuab hluav taws xob:
(1) Tau raws li GB / T18802.12: 2006 "Surge Protection Device (SPD) Tshooj 12: Kev Xaiv thiab Siv Cov Lus Qhia ntawm Cov Hluav Taws Xob Kev Tawm Tsam Hluav Taws Xob tsawg tsawg", "Thaum SPD thiab dhau tam sim no tiv thaiv kev koom tes, cov npe hauv qab cov tawm tam sim no Hauv, nws tau pom zoo tias tus tshaj tiv thaiv tam sim no tsis ua haujlwm; thaum lub tam sim no loj dua Nyob Hauv, tus tiv thaiv tam sim no tuaj yeem ua haujlwm. Rau kev rov kho dua-tam sim no tus tiv thaiv, xws li lub cav hluav taws xob, nws yuav tsum tsis muaj kev puas tsuaj los ntawm qhov kev nce siab no. "
(2) Qhov ntsuas tus nqi tam sim no ntawm cov khoom siv tiv thaiv tshaj-tam sim no yuav tsum raug xaiv raws li qhov siab tshaj qhov luv luv-tam sim no uas yuav tsim tawm ntawm SPD kev teeb tsa thiab luv luv-tam sim no muaj peev xwm tiv thaiv SPD (muab los ntawm SPD cov chaw tsim khoom ), uas yog, "SPD thiab dhau-tam sim no tiv thaiv txuas nrog nws. Lub sijhawm luv-Circuit Court tam sim no (tsim los thaum SPD tsis ua tiav) ntawm lub cuab yeej sib npaug los yog ntau dua qhov siab luv luv-tam sim no qhov kev cia siab ntawm qhov kev teeb tsa. "
(3) Qhov kev xaiv sib raug zoo yuav tsum muaj kev txaus siab ntawm qhov tam sim no tiv thaiv ntaus F1 thiab SPD sab nraud txuas hluav taws xob F2 ntawm lub zog hluav taws xob. Daim duab thaiv ntawm qhov ntsuas muaj raws li nram no:
Kev tshawb fawb soj ntsuam muaj li nram no:
(a) Qhov ntsuas hluav taws xob ntawm kev sib txuas ntawm Circuit Court thiab fuses
U (Circuit Court breaker)) 1.1U (fuse)
U (SPD + dhau-tam sim no tus tiv thaiv) yog cov vector tawm ntawm U1 (dhau-tam sim no tus tiv thaiv) thiab U2 (SPD).
(b) Qhov muaj peev xwm tam sim no uas cov fuse lossis Circuit Court breaker tuaj yeem tiv thaiv
Nyob rau hauv qhov xwm txheej uas tus tiv thaiv dhau tam sim no tsis ua haujlwm, nrhiav qhov siab tshaj tam sim no uas lub fuse thiab Circuit Court breaker nrog sib txawv tam sim no tuaj yeem tiv taus. Kev ntsuas hluav taws xob yog li pom hauv daim duab saum toj no. Cov qauv ntsuas yog raws li hauv qab no: qhov thov inrush tam sim no yog kuv, thiab qhov fuse lossis hluav taws xob hluav taws xob tsis ua haujlwm. Thaum 1.1 lub sij hawm inrush tam sim no kuv thov, nws ua hauj lwm. Los ntawm kev sim, peb pom qee qhov tsawg tshaj tawm tam sim no qhov muaj nuj nqis xav kom tiv thaiv dhau-tam sim no kom tsis txhob ua haujlwm tsis muaj hluav taws xob (8 / 20µ yoj tam sim no lossis 10 / 350µs yoj tam sim no). Saib cov lus:
Cov lus 8: Qhov tsawg kawg nkaus tus nqi ntawm fuse thiab Circuit Court breaker nyob rau hauv qhov hluav taws xob tso nrog qhov yoj ntawm 8 / 20µs
| dej siab tam sim no (8 / 20µs) kA | Tam sim no tus tiv thaiv yam tsawg kawg nkaus | |
| Fuse nyob tam sim no A | Circuit Court breaker nyob tam sim no A | |
| 5 | 16gq ua | 6 Hom C |
| 10 | 32gq ua | 10 Hom C |
| 15 | 40gq ua | 10 Hom C |
| 20 | 50gq ua | 16 Hom C |
| 30 | 63gq ua | 25 Hom C |
| 40 | 100gq ua | 40 Hom C |
| 50 | 125gq ua | 80 Hom C |
| 60 | 160gq ua | 100 Hom C |
| 70 | 160gq ua | 125 Hom C |
| 80 | 200gq ua | - |
Cov lus 9: Qhov tsawg kawg nkaus tus nqi ntawm fuse thiab Circuit Court breaker tsis ua hauj lwm nyob rau hauv qab tam sim no ntawm 10 / 350µs
| Inrush tam sim no (10 / 350µs) kA | Tam sim no tus tiv thaiv yam tsawg kawg nkaus | |
| Fuse nyob tam sim no A | Circuit Court breaker nyob tam sim no A | |
| 15 | 125gq ua | Pom zoo kom xaiv cov pwm rooj plaub Circuit Court breaker (MCCB) |
| 25 | 250gq ua | |
| 35 | 315gq ua | |
Nws tuaj yeem pom los ntawm cov lus saum toj no tias qhov tseem ceeb yam tsawg kawg nkaus rau kev tsis ua haujlwm ntawm 10 / 350µs fuses thiab Circuit Court tej fais fab yog loj heev, yog li peb yuav tsum xav txog kev tsim tshwj xeeb tiv thaiv cov cuab yeej siv
Hais txog nws txoj haujlwm thiab kev ua haujlwm, nws yuav tsum muaj qhov cuam tshuam loj thiab ua kom sib haum nrog lub cav hluav taws xob (Circuit Court) lossis fuse.
