Ukuqinisekisa uKhuseleko oluLungileyo kwi-DC Circuit Breakers

Kwintsimi yeenkqubo zombane, ukhuseleko luhlala luhamba phambili. Njengoko imfuno yamandla avuselelekayo iqhubeka ikhula, ukusetyenziswa kwe-direct current (DC) kuya kuba yinto eqhelekileyo. Nangona kunjalo, olu tshintsho lufuna oonogada abakhethekileyo ukuqinisekisa ukhuseleko lwabasebenzi kunye nezixhobo. Kule post blog, siza kuphonononga amacandelo abalulekileyo aDC wesekethe umaphulikunye nendlela abasebenza kunye ngayo ukunika ukhuseleko oluthembekileyo.

1. Isixhobo sokukhusela ukuvuza kwe-AC terminal:
Icala le-AC le-DC ye-circuit breaker lixhotyiswe nge-residual current device (RCD), eyaziwa ngokuba yi-residual current circuit breaker (RCCB). Esi sixhobo sijonga ukuhamba kwangoku phakathi kweengcingo eziphilayo kunye nezingathathi hlangothi, ukufumanisa ukungalingani okubangelwa yimpazamo. Xa oku kungalingani kufunyenwe, i-RCD iphazamisa ngokukhawuleza isiphaluka, ikhusela umngcipheko wokutshitshiswa kombane kunye nokunciphisa umonakalo onokuthi ubekho kwinkqubo.

2. Impazamo yetheminali ye-DC idlula kwi-detector:
Jikela kwicala le-DC, sebenzisa isixhobo sokujonga isitshixo esingalunganga (isixhobo sokujonga i-insulation). I-detector idlala indima ebalulekileyo ekubekeni iliso okuqhubekayo kokumelana nombane we-insulation system. Ukuba iphoso lenzeka kwaye ukuchasana kwe-insulation kwehla ngaphantsi komda omiselweyo, umtshini wesiteshi ophosakeleyo uchonga ngokukhawuleza iphoso kwaye uqalise isenzo esifanelekileyo ukucima impazamo. Amaxesha okuphendula ngokukhawuleza aqinisekisa ukuba iimpazamo azinyuki, zikhusela iingozi ezinokubakho kunye nomonakalo wezixhobo.

3. DC terminal grounding isaphuli sesekethe ekhuselayo:
Ukongeza kwi-detector ye-fault channel, i-DC icala le-DC ye-circuit breaker nayo ixhotyiswe nge-grounding protection circuit breaker. Eli candelo linceda ukukhusela isistim kwiimpazamo ezinxulumene nomhlaba, njengokuqhekeka kwe-insulation okanye umbane owenziwe ngumbane. Xa isiphoso sifunyenwe, i-breaker circuit circuit i-ground protection breaker ivula ngokuzenzekelayo isiphaluka, ngokufanelekileyo ikhuphe icandelo eliphosakeleyo kwinkqubo kunye nokukhusela umonakalo ongaphezulu.

Ukulungisa ingxaki ngokukhawuleza:
Ngelixa izaphuli zesekethe zeDC zibonelela ngokhuseleko oluluqilima, kufanelekile ukuba uqaphele ukuba isenzo esikhawulezileyo kwisiza sibalulekile ekuxazululeni iingxaki kwangethuba. Ukulibaziseka ekusombululeni iziphene kunokubeka esichengeni ukusebenza kwezixhobo zokukhusela. Ngoko ke, ukugcinwa rhoqo, ukuhlolwa, kunye nokuphendula ngokukhawuleza kuyo nayiphi na into ebonisa ukungaphumeleli kubalulekile ukuqinisekisa ukuthembeka okuqhubekayo kwenkqubo.

Imida yokhuseleko kwiimpazamo ezimbini:
Kubalulekile ukuqonda ukuba nangona la macandelo akhuselayo akhoyo, i-DC breaker yesekethe ayinakuqinisekisa ukhuseleko xa kukho impazamo ephindwe kabini. Iimpazamo ezimbini zenzeka xa iimpazamo ezininzi zenzeka ngaxeshanye okanye zilandelelana ngokukhawuleza. Ubunzima bokucoca ngokukhawuleza iimpazamo ezininzi kunika imingeni kwimpendulo esebenzayo yeenkqubo zokukhusela. Ke ngoko, ukuqinisekisa uyilo olufanelekileyo lwenkqubo, ukuhlolwa rhoqo, kunye namanyathelo okuthintela kuyimfuneko ukunciphisa ukwenzeka kokungaphumeleli kabini.

Isishwankathelo:
Njengoko ubuchwephesha bamandla ahlaziyekayo buqhubeka nokuvela, ukubaluleka kwamanyathelo okhuseleko afanelekileyo afana nabaphuli beesekethe ze-DC abanakugxininiswa kakhulu. Idibaniso ye-AC yecala le-residual device yangoku, i-DC side fault channel detector kunye ne-ground protection circuit breaker inceda ekuphuculeni ukhuseleko jikelele kunye nokuthembeka kwenkqubo yombane. Ngokuqonda umsebenzi wala macandelo abalulekileyo kunye nokusombulula ngokukhawuleza ukungaphumeleli, sinokwenza indawo yombane ekhuselekileyo kuwo wonke umntu ochaphazelekayo.