Mokokotlo oa leeto la sekhechana sa potoloho

Tšimoloho ea mothinya oa leeto

Mohopolo oa mothinya oa leeto o simolohile lefatšeng la IEC 'me o sebelisoa ho arola li-micro-circuit breakers (B, C, D, K le Z) ho tloha ho litekanyetso tsa IEC.Tekanyetso e hlalosa meedi e tlase le e ka hodimo bakeng sa maeto, empa bahlahisi ba na le bokgoni ba ho lekanya dintlha tse nepahetseng ka hara meedi ena tse ka etsang hore dihlahiswa tsa bona di kgoptjwe.Lits'oants'o tsa maeto li bonts'a libaka tsa mamello moo moetsi a ka behang libaka tsa maeto a sekhechana sa eona sa potoloho.

Mokokotlo oa leeto la sekhechana sa potoloho

Litšobotsi le ts'ebeliso ea curve ka 'ngoe, ho tloha ho tse bonolo haholo ho isa ho tse bobebe, ke:

Z: Leeto la makhetlo a 2 ho isa ho a 3 le lekantsoe hajoale, le loketse lits'ebetso tse hlokolosi haholo joalo ka lisebelisoa tsa semiconductor

B: Leeto ka makhetlo a 3 ho isa ho a 5 le lekantsoe hona joale

C: Leeto ka makhetlo a 5 ho isa ho a 10 a lekantsoeng hona joale, a loketse bakeng sa hona joale inrush e mahareng

K: Leeto la makhetlo a 10 ho isa ho a 14 le lekantsoe hona joale, le loketse meroalo e nang le inrush e phahameng hona joale, e sebelisetsoang li-motors le li-transformer.

D: Leeto ka linako tse 10 ho isa ho tse 20 tse lekantsoeng hona joale, tse loketseng ho qala hona joale

Ho hlahloba chate ea "Papiso ea li-curve tsohle tsa IEC Trip", u ka bona hore maqhubu a phahameng a qholotsa maeto a potlakileng.

Bokhoni ba ho mamella hona joale ke taba ea bohlokoa khethong ea li-curve tsa maeto.Meroalo e itseng, haholo-holo li-motor le li-transformer, e ba le liphetoho tsa nakoana tsa hona joale, tse tsejoang e le impulse current, ha likhokahano li koetsoe.Lisebelisoa tsa ts'ireletso tse potlakileng, joalo ka li-b-trip curves, li ka lemoha phallo ena e le ho hloleha ebe li bulela potoloho.Bakeng sa mefuta ena ea meroalo, li-curve curve tse nang le lintlha tse phahameng tsa makenete (D kapa K) li ka "feta" har'a phallo e potlakileng ea hona joale, ho sireletsa potoloho leetong le fosahetseng.