A Inoshanda Nhungamiro Yekuumbwa Nyaya Yese Circuit Breakers

2026-08-25 0 Ndisiire meseji

Chii chinonzi MCCB?

MCCB —molded case circuit breaker- i-low-voltage protective device iyo inobvisa dhigirii pakarepo kana ichiona kuwandisa kana kupfupika kwemamiriro ezvinhu. Kusiyana nefuse, inogona kugadziridzwa uye kushandiswa zvakare mushure merwendo. Mukati mekesi yakaumbwa, thermal-magnetic trip mechane inobata mabasa maviri: chinhu chinopisa chinopindura kune yakaramba ichiremerwa, nepo magineti chinhu chinodaira ipapo kune pfupi-yedunhu kukanganisa. Mhedzisiro ndeyedziviriro inoenderana nemabatiro chaiwo emagetsi emagetsi.

Inguva yekusarudza MCCB: mafeeders makuru anouya, mapaneru ekugovera-nhatu-chikamu, maseketi makuru emota, kana chero nzvimbo iyo inotarisirwa kupfupi-sekiti ikozvino inodarika iyo MCB inogona kukanganisa.

Kana MCB yakwana: ekupedzisira madiki-maseketi ane mitoro ine mwero uye yakaderera mazinga - mabhodhi ekugara, mwenje uye socket maseketi.

250A three-pole MCCB

Nzira yekusarudza MCCB chaiyo

Yakatemerwa ikozvino (Mu)

1. - fananidza mutoro unoramba uripo, uye bvumidza headroom yekutanga mafungu emotor.

Kutyora simba (Icu / Ics)

2. - inofanira kuva yakakwirira kudarika inotarisirwa nguva pfupi-yekutenderera ikozvino panzvimbo yekuisa. Iyo yakakwirira yekukanganisa mwero, iyo yakakwirira Icu yaunoda.

Poles

3. - 3P yematatu-phase system, 4P apo iyo isina kwayakarerekera inodawo kubviswa.

Voltage ratings

4. - cheki rated operational voltage (Ue), insulation voltage (Ui) uye impulse inomira (Uimp) inopesana nehurongwa.

Standards uye certification

5. - IEC/EN 60947-2 kutevedza uye kucherechedzwa kweEC ndiyo hwaro hwezvirongwa zvepasi rose.

Application

6. - Dziviriro yemota, kugovera magetsi uye kuisirwa kwemaindasitiri kunogona kudiwa akasiyana furemu ratings uye rwendo maitiro.

Iyo yakanyatsotsanangurwa 250A MCCB inoita senge:

Kugadzira kongiri iyi, funga nezveDAM3-250 kubva kuC·DADA Electric - 250A matatu-pole MCCB inotaridza zvekutarisa mukirasi yemudziyo uyu:

3P kugadzirisa

● ine 250A yakarongwa ikozvino (In), yakakodzera mabhodhi ekugovera matatu-phase

Voltage ratings:

● 690V~; Ue AC400/415V, Ui 750V, Uimp 8kV

Kuputsa simba kusvika ku50kA

● — Icu ye18/25/36/50 kA mhiri kweB/C/N/S akasiyana, kuti vanoisa vakwanise kuenzanisa mwero wekukanganisa panzvimbo dzakasiyana dzenetiweki.

IEC/EN 60947-2 uye GB 14048.2 kutevedzera

● CE yakanyorwa, ine yakajeka ON / OFF yekushandura mubato wekuona maitiro ekushanda

● Yakagadzirirwa kugovera simba, kudzivirira motokari uye kushandiswa kwemaindasitiri

Mafungiro ari kuseri kweichi chirevo: 250A, 3-pole furemu ine 50kA kirasi yekupwanya simba inovhara ruzhinji rwepaneru yekuvaka uye inodiwa nekontrakta - kubva pamabhodhi makuru ekugovera kuenda kune mota feeder maseketi - nepo akawanda eIcu akasiyana anokutendera iwe saizi yekurudyi mutengo uchipesana nekukanganisa chaiko mazinga.

Kurudziro yesarudzo

● Kumaseketi ekupedzisira kusvika ~ 125A ane mazinga akaderera, MCB ndiyo sarudzo yehupfumi.

● Pakugovera kukuru, dziviriro yemota uye switchgear yemuindasitiri, sarudza MCCB ine breaking capacity inodarika inotarisirwa kuisirwa short-circuit current.

● Kana usina chokwadi, saizi imwe kirasi kumusoro pakupwanya simba: mutengo musiyano idiki, nepo kudzivirira margin inogona kuva musiyano pakati pechikanganiso chidiki nekudzima kukuru.

Mibvunzo inowanzo bvunzwa

Mubvunzo: Chii chinonzi MCCB?

A: Amolded case circuit breakeriri resettable yakaderera-voltage inodzivirira mudziyo unobvisa dunhu pakuremerwa kana pfupi-dunhu, rakagadzirirwa yakakwirira mafungu uye kukanganisa mazinga pane miniature wedunhu breaker.

Mubvunzo: Icu inorevei paMCCB?

A: Icu ndiyo yekupedzisira ipfupi-sekete yekutyora simba - iyo yakanyanya kukanganisa ikozvino iyo breaker inogona kukanganisa. Ics ndiyo sevhisi yekutyora simba, iyo nhanho yainogona kukanganisa kakawanda uye kuramba ichishanda.

Mubvunzo: Ndinosarudza sei simba rekupwanya reMCCB yangu?

A: Sarudza iyo Icu chiyero chepamusoro pane inotarisirwa ipfupi-yedunhu ikozvino panzvimbo yekuisa. Mabhodhi ekugovera ane yakakwira transformer simba kana marefu maindasitiri ekudyisa kazhinji anoda 36-50kA kirasi zvishandiso.

Q: Chii chinonzi DAM3-250 MCCB?

A: Iyo DAM3-250 ndeye 250A matanda matatu akaumbwa nyaya inotyora kubva kuC · DADA Electric, yakayerwa kusvika ku690V nekupwanya kugona kusvika ku50kA, yekugovera magetsi, kudzivirira mota uye maindasitiri ekushandisa.