Ukhetho oluchanekileyo lwe-full yesekethe

Ngokufuthi, kufika ixesha lokuba endaweni iintambo zombane kunye umaphuli yesekethe kufuneka kufakwe ngexesha ukulungisa okanye ukwakha ezintsha. Xa utyelele zombane ivenkile phantse sisoloko sibona ukuba 99% uluhlu kwisekethe okuchasene up izixhobo kunye nokukhubeka igophe C. Ngenxa yoko, kusenokubonakala ngathi oku kuphela uguqulelo kunokwenzeka kwaye ichanekile. Eli nqaku lunikezelwa ngokutsha enye ebalulekileyo iimpawu yesekethe-ungumgqithi - nokukhubeka igophe.

Amathanga nokukhubeka kwisekethe okuchasene luqulathe izahlulo ezimbini:

• kuvusa ukhuseleko omninzi (thermal): xa ephezulu lwangoku, ixesha elifutshane, ixesha;
• nokukhubeka phezu iziphaluka elifutshane (release magnetic) ukuba yangoku kune iseti ingongoma ixesha uhambo wokhuseleko kukuba ngaphantsi kwe esine-10.

Kuba imisinga short-beesekethe ngasentla amaxesha 20, iimpawu rated ixesha langoku langoku (off ezigoso) musa ukunika ngqo ukubonisa olwaneleyo.

Ikhubaza ezinkulu imisinga elifutshane-beesekethe luphawulwa ezigoso mda yangoku (kwesidingo current namandla). Ixesha lilonke asuswayo kunokuba malunga ulingana ngokuphindwe kahlanu ixabiso ratio (I2t) / (I) 2.

Ukukhangela le selectivity phakathi yesekethe okuchasene ezimbini

Xa superimposing full yesekethe igophe ku egopheni emantla ndingumgqithi yesekethe Ungajonga ukuba le indibanisela izixhobo emane xa ukucima kombane (selectivity kuwo onke amaxabiso olukhoyo, kude kube setpoint iswitshi magnetic ophezulu). yokuqinisekisa olunjalo unengqiqo xa omnye olamlo beesekethe ezimbini ine iseti indawo adjustable; izixhobo ngezakhelo rhoqo, le nkcazelo inokufumaneka ngqo kwi selectivity itafile. Ukuze yokuvavanya selectivity ukuya elifutshane beesekethe kuyimfuneko ukuthelekisa amandla iimpawu izixhobo ezimbini.

Umzekelo: uwunike nokukhubeka igophe kulo mzobo, ukuba ungumgqithi yesekethe iC60 Schneider Electric weyo 9 (curve C, ngoku ngama-20 A) ukukhubaza zangoku 100 A (ngamanye 5-ulisonge kayi yangoku E) ye:
• seconds ubuncinane 2;
• ubuninzi imizuzwana 7.

Time iimpawu zangoku

Ukukhetha ixesha iimpawu zangoku kufuneka ouschestvlyatsya ngokodidi sikhusela inkqubo njengokuba ekukhuseleni iimfuno zendlela yombane sisoloko ezahlukeneyo. Kule meko, kumanqanaba izixhobo ezi-6 ezigoso ezahlukeneyo.

curve B

Decoupling: 3 ukuya 5 (rated lwangoku) IEC 60898
Kujoliswe ikakhulu ngokhuseleko umbane kwaye apho kungekho kwincopho inrush yangoku

ijika C

Decoupling: 5 ukuya 10 (rated lwangoku) IEC 60898
Kujongwe ukuba ukukhusela iintambo kwimeko injongo jikelele

LwaManqaku D ne K

Decoupling: 10 ukuya 14 (rated lwangoku) IEC 60947,2
Kujongwe ukuba ukukhusela iisekethe eliphezulu lokuqalisa ngoku, kwaye ukukhusela abaguquli imennoo kunye Motors.

curve Z

Decoupling: ukusuka 2.4 ukuya 3.6 Ngo (rated lwangoku) IEC 60898
Yenzelwe ngokuyintloko ukukhusela izixhobo electronic.

ijika MA

Decoupling: 12 (rated lwangoku) IEC 60898
Eyenzelwe ukukhusela kuphela izixhobo kuvusa njengoko apha akukho isixhobo thermal nokukhubeka.

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