Gịnị bụ ihe RCD

Enweghị ihe ọmụma nke ihe RCD (mmapụta ugbu a ngwaọrụ), iji hụ na mma ọrụ nke eletriki ngwa siri ike. I nwere ike na-na-anụ akụkọ banyere otú serviceable saa igwe electric ịtụnanya mgbe metụrụ n'oge ọrụ. The otu ihe na-eme ma ọ bụrụ na n'otu oge ahụ na-emetụ n'ahụ na-arụ ọrụ na kọmputa na radiators. Nke a na onu ka adị, na ọ bụghị a malfunction, kama a atụmatụ nke ọkụ na ngwá enweghị grounding.

Budata dịkwuo ọkụ ekwe RCD.

Gịnị bụ ihe RCD? Nke a ngwaọrụ bụ a elu na-agba circuit emebi, nke dabeere na atụnyere okwukwo na-ederịta akwụkwọ ozi na ibu ma na-aga azụ na netwọk, na-arụ na-emeghe circuit mgbe inequality (esi ugbu a na-egosi). Nke ahụ bụ, ma ọ bụrụ na ebe na-echebe ngalaba nke akara na-eri eri n'ala, ngwaọrụ achọpụta na ọ na edepuchaala ume akara.

Ịtụle ụkpụrụ nke RCD. The obi nke ngwaọrụ bụ a ugbu a transformer, na-akpọ esi. Ọ mejupụtara atọ windings: isi (L1) na abụọ (L2), karị, gụnyere ke adọ discontinuities na-anọpụ iche wires, nke atọ (L3) na jikọọ na akpalite na usoro. Dabere na-egbu usoro nwere ike nyere na elu uche agba anọ (RCD electromechanical ụdị) ma ọ bụ kọmputa mmiri, a na a comparator na ihe ampilifaya (E-ụdị). Nke a kpatara nsogbu usoro a na mechanically tinyere na-eduzi uche mbanye na ike ezumike kọntaktị.

Mgbe ibu na jikọọ na RCD site asọfe L1 na L2, a ugbu a aga. Ebe ọ bụ na nkịtị ọrụ uru nke ugbu a nyere n'ji hà exiting, mgbe ahụ, ha na-magnetik agbanwe oge eme na-neutralized na bụ efu (na windings nso, ugbu a na-eduzi oppositely). N'ihi ya, eriri igwe L3 abụghị mmetụta ọ bụla. Mode nke ọrụ adi-agbanwe n'otu oge na-emetụ n'ahụ mmadụ n'ala na mebiri emebi unit n'okpuru voltaji. Na nke a, ndị na-adọ eduzi (L1 asọfe) ihe ọzọ ugbu a uku na nke ugbu a asọfe L2. N'ezie, e nwere ọdịiche dị, n'ihi na nke ugbu a na-aga n'ime sekit nke na-adọ-eduzi, ga-aga n'ime ala site na onye, na alaghachikwurughị RCD. The magnetik agbanwe oge karịa ndị compensating eriri igwe L1 L2 eruba edinam, karị, N'ịbụ magnetik agbanwe oge na-emepụta a asọfe L3 obere ugbu a zuru ezu maka ọrụ nke agba anọ ma ọ bụ na kọmputa circuitry na actuation nke actuator maka ịda ike kọntaktị.

A nwoke maara ihe RCD, na-maara otú ịrụ a dị mfe ego nke ya ịrụ ọrụ. Na ikpe nke ọ bụla RCDs chee "Ule" button, na ịpị na nke ị nwere ike nwalee arụmọrụ nke ngwaọrụ. Na ịpị nkenke shunts otu n'ime windings, wepụ ya na circuit N'ịbụ ụgwọ magnetik agbanwe oge, otú ahụ na ngwaọrụ na-triggered.

A ngosi ajụjụ - esi jikọọ na RCD? The ngwaọrụ nwere na-n'ịnyịnya na tandem na akpaka mgba ọkụ, n'ihi na ọ dịghị ebu kwes na akpa releases, karị, anaghị echebe megide bufee (thermal) na elu-ugbu a mkpụmkpụ-circuit (SC). Nsogbu ugbu a nwere ike imebi RCD, dị ka nke a mode nke ọrụ ndị leakage adịghị ime, ma na nke ugbu a bara uru na-ụba na elu ụkpụrụ. Site n'ụzọ, nke a bụ ya mere na ọ bụ ihe dị mkpa na-ahọrọ mgbe ịzụrụ a na ngwaahịa na RCD gosiri na ugbu a. Ka ihe atụ, ọ bụrụ na igwe na-zubere maka 16 Amp, na RCD ga-erughị 25 amperes. Ndị dị mfe, ndị gosiri na ugbu a nke RCD - bụ ime ugbu a maka mmiri nke ya na-eduzi.

O doro anya na, n'oge anyị, ọ bara uru ọ bụghị naanị ịghọta ajụjụ, ihe bụ RCD, ma-enwe ike iji ya na gị onwe gị n'ụlọ. Mgbe niile, nke a bụ nche ọzọ niile ndị òtù ezinụlọ.