Ungazilinganisa Njani Izixhobo Zokukhusela Ezikhuselekileyo?
Indlela Yokwenza Ubungakanani Obufanelekileyo Izixhobo zoKhuselo oluKhulu?
Ndiqhotse irakhi ye-PLC ye-$20,000 kuba ndikhethe ngendlela engafanelekanga I-SPD.
Ndilinganisa i-SPD nganye ngokuthelekisa i-Uc yayo ne-voltage yenkqubo, i-Imax yayo ne-overge embi kakhulu, kwaye ifikelela kwi-standard yesixhobo; emva koko ndijonga amanani amathathu kwitheyibhile enye.
Qhubeka ufunda kwaye ndiza kukubonisa itheyibhile ukuze ungaphindi impazamo yam.
Kutheni Kufanelekile I-SPD Ubungakanani bubalulekile?
Ndiphulukene nosuku lonke lokuvelisa xa i-40 kA SPD yaqhuma kwisaqhwithi se-100 kA.
Ukuba i-SPD incinci kakhulu iyatsha; ukuba inkulu kakhulu uhlawula kakhulu; ubungakanani obufanelekileyo bugcina umgca uhleli kwaye umgcini zincwadi uzolile.
Iindleko Zokwenyani ze-SPDs Ezingaphantsi Kobukhulu
Ii-SPD ezingaphantsi kobukhulu aziphumeleli nje kuphela; ziyasilela ngamandla.
Ndibone enye iqhuma yaza yathumela iplastiki enyibilikisiweyo kwibhasi.
Isityalo sayeka iiyure ezili-14 ngelixa sasitshintsha yonke iphaneli.
Ibhili yokwenyani yayiyi-$18,000 kwimveliso elahlekileyo, hayi i-$200 SPD.
Iindleko Ezifihliweyo Zee-SPD Ezinkulu Kakhulu
Ii-SPD ezinkulu kakhulu zibonakala zikhuselekile, kodwa zibiza kakhulu kwangaphambili kwaye zivumela amandla amaninzi ukuba adlule.
Iyunithi ye-200 kA kwinkonzo ye-20 kA inokuphakama okuphezulu.
Loo 200 V eyongezelelweyo inokubulala igalelo le-1,200 V PLC.
Uhlawula kabini: kube kanye ngebhokisi enkulu, kube kanye ngekhadi eliqhotsiweyo.
Indlela Endijonga Ngayo "Ubungakanani Obufanelekileyo" Kwimibuzo Emithathu
- Yeyiphi intaba enkulu enokufikelela apha?
- Yeyiphi i-voltage enokusinda umthwalo wam?
- Ngawaphi amanani eephepha zedatha ze-SPD agubungela zombini?
Ukuba ndingaziphendula ezi zintathu, ubungakanani bulungile.
Inkcazo yeSPD ebalulekileyo: Uc, Imax, Iimp, kunye ne-Up
Bendisoloko ndidibanisa i-Imax kunye ne-Iimp; ngenye imini umhloli akaphumelelanga kwiphaneli yam.
Ndikhetha ii-volts ze-Uc ≥ system, i-Imax ≥ local surge, i-Iimp ≥ lightning class, kunye ne-Up ≤ 80% yezixhobo ezimelana nayo; ndibhala amanani amane kumqolo omnye ngaphambi kokuba ndithenge.
I-Uc - I-Voltage enokuhlala kuyo i-SPD ngonaphakade
I-Uc yinombolo yengcambu.
Yikhethe phantsi kakhulu kwaye i-SPD ijika ibe yifutshane.
Yikhethe phezulu kakhulu kwaye inqanaba lokhuseleko liyanyuka.
Ndisebenzisa iTheyibhile 1 ukuze ndilinganise i-voltage yenkqubo kwi-Uc encinci.
| Inkqubo yeVoltage (LL) | UbuncinciUc |
| Isigaba sokwahlulahlula se-120/240 V | 150V |
| 208 Y/120 V | 150V |
| I-delta engama-240 V | 255 V |
| 380 Y/220 V | 255 V |
| 480 Y/277 V | 320V |
Imax - Utyando olukhulu kakhulu olunokuthatyathwa yi-SPD kanye
I-Imax yinombolo efumaneka ngesantya esinye.
Ndijonga imephu yoxinano lwefleshi yendawo.
Ukuba imephu ibonisa ukukhanya oku-8 nge-km² nganye, ndiyayilinganisa i-100 kA.
Ukuba imephu ibonisa ukukhanya oku-4, ndinika ireyithi ye-60 kA.
Andikaze ndibe ngaphantsi kwe-40 kA nokuba ndikwindawo engenamngcipheko uphezulu.
Iimp - Isitampu seKlasi yoMbane
I-Iimp ivavanywa nge-10/350 µs wave.
Iklasi yoku-1 ifuna i-25 kA ngepali nganye.
Iklasi yesiBini ifuna i-12.5 kA.
Ukuba inkonzo inentonga yombane, ndongeza iKlasi yoku-1 kwimitha.
Phezulu - I-Voltage Ekhohlo Yomthwalo
Yinto ebonwa yi-PLC yam.
Ndithatha eyona mali incinci iphezulu evunyelwa yibhajethi, kodwa ndiyigcina ingaphantsi kwama-80% enqanaba le-impulse yezixhobo.
I-2,000 V PLC ifumana i-SPD ene-Up ≤ 1,600 V.
Ukuba intambo inde ndiyilahla kwi-1,200 V kuba intambo yongeza i-200 V ngokwayo.
Isikhokelo seNyathelo ngeNyathelo sokulinganisa isixhobo sakho sokukhusela i-Surge
Ndilinganisa yonke i-SPD kwiphepha elinye le-A4.
Ndizalisa iibhokisi ezintlanu: ii-volts zenkqubo, i-flash level, ubude bentambo, ukumelana nomthwalo, kunye nebhajethi; emva koko ndifunda ikhowudi yemodeli kwikholamu yokugqibela yetafile yam yokujonga.
Inyathelo 1 - Bhala phantsi iVolthi yeNkqubo kunye noCwangciso
Ndiqala ngepleyiti yegama kwi-main breaker.
Ndibhala oku: 480 Y/277 V, enezigaba ezi-3, eneengcingo ezi-4.
Oko kundixelela ukuba i-Uc ≥ 320 V isuka kwiTheyibhile 1.
Inyathelo lesi-2 - Fumana ubuninzi beFlash
Ndivula imephu yeNASA yasimahla ndize ndicofe kwisityalo sam.
Imephu ithi ukukhanya oku-6 kwi-km² nganye.
Nditshintshela kwiTheyibhile yesi-2.
| Ubuninzi beFlash | Ubuncinane be-Imax ngemodi nganye | Iklasi |
| 0–2 | 40 kA | II |
| 3–5 | 60 kA | II |
| 6–10 | 100 kA | Mna |
| >10 | 160 AD | Mna |
Ndikhetha i-100 kA kunye neKlasi I.
Inyathelo lesi-3 - Linganisa Ubude beCable ukusuka kwiNkonzo ukuya kuLayisha
Ndihamba endleleni ndiphethe iteyiphu.
Ukuba ukubaleka kukude kune-30 m ndongeza i-SPD yesibini kwi-sub-panel.
Iintambo ezinde zongeza i-10 V ngemitha nganye ye-induction spike.
Inyathelo lesi-4 - Jonga ukuba izixhobo ziyamelana naso
Ndivula incwadi yemiyalelo ye-PLC.
Ithi “impembelelo imelana ne-1,500 V”.
Ndiphinda-phinda ngo-0.8 kwaye ndibeka i-Up ≤ 1,200 V.
Inyathelo lesi-5 - Khetha iModeli kunye neXabiso
Ndivula iphepha lam langaphakathi eliboniswe kwiTheyibhile 3.
| Inombolo yendawo | I-Uc | Imax | Iimp | Phezulu | Ixabiso1kpcs |
| I-LKX-480-40 | 320V | 40 kA | 12.5 kA | 1,400V | $18 |
| I-LKX-480-100 | 320V | 100 kA | 25 kA | 1,100V | $28 |
| I-LKX-480-160 | 320V | 160 kA | 50 kA | 900V | $42 |
Umqolo ophakathi uhambelana nebhokisi nganye, ngoko ke ndikhetha i-LKX-480-100.
Inyathelo lesi-6 - Beka uMyalelo kwaye Uphawule Umhla
Ndongeza umhla wokuhanjiswa kwikhalenda yam.
Ndikwaseta i-alamu yokutshintshana yeminyaka emihlanu kuba nee-SPD ezilungileyo zikhula.
Ukhetho lwe-SPD kwizicelo ezahlukeneyo: zokuhlala, ezorhwebo, kunye nezemizi-mveliso
Ndihlala endlwini ene-120 V, ndinevenkile ene-480 V, kwaye ndiqhuba isityalo se-22 kV.
Ndikhetha i-20 kA Uhlobo 3 kwifriji yam, i-100 kA Uhlobo 1+2 kwivenkile yam, kunye ne-160 kA Uhlobo 1+2+3 kwisityalo; uhlobo olufanayo, itafile efanayo yokujonga, umqolo owahlukileyo.
Indawo yokuhlala - Gcina ilula kwaye ingabizi
Izindlu zibona ukunyuka kwe-40 kA ubukhulu becala.
Ndisebenzisa uhlobo olunye lwesibini kwiphaneli kunye nohlobo olunye lwesithathu kwiTV.
Ixabiso lilonke lingaphantsi kwe-$60.
Ndisalala xa kufika isaqhwithi.
Ezorhwebo - Gquma Umthwalo Oxutyiweyo
Ivenkile inezibane, i-HVAC, kunye nezifundi zamakhadi.
Ndibeka uHlobo loku-1 kwinkonzo, uHlobo lwesi-2 kwiphaneli nganye engaphantsi, kunye noHlobo lwesi-3 kwiPOS.
Ndihlala nosapho olufanayo lwase-Up ngoko ke iimilo zamaza ziyanda, kungekhona ukulwa.
Imizi-mveliso - Bala iiLoops kunye neeMoto
Iimoto ziphosa i-1,500 V kwakhona emgceni xa zicima.
Ndongeza i-RC snubber kunye ne-SPD ene-200 V margin kwi-Up.
Ndisebenzisa neeyunithi ze-DIN-rail ukuze ndikwazi ukuzitshintsha ziphila; ixesha lokungasebenzi libiza ngaphezulu kunelo lisetyenziswayo.
Iindawo ezikhethekileyo - Eziyingozi Nezonyango
Kwiindawo eziqhumayo zeZone 2 ndikhetha ii-SPD ezingenazo iintlantsi ezifihliweyo.
Kwizibhedlele ndisebenzisa izihluzi zenqanaba lezonyango ezine-
Itheyibhile iyafana; kuphela isimamva esitshintshayo.
Isiphelo
Ii-SPDs zokulinganisa ubungakanani bazo zinamanani amane: i-Uc, i-Imax, i-Iimp, i-Up.
Vula iitafile, zalisa iibhokisi, khetha umqolo, kwaye awusayi kuphinda uthenge ibhokisi engalunganga.
Ndithumelele ipleyiti yakho yegama lephaneli kwaye ndiza kukuthumelela inqaku elifanelekileyo ngomso.