I-MCCB 250A/400A/630A I-Selection Logic – Ucwaningo Lwendaba Lwabantu Ugesi lwe-RDM5 Series

I-250A, i-400A kanye ne-630A yizilinganiso ezintathu ezisetshenziswa kakhulu ze-MCCB (ama-molded case circuit breakers) ekusatshalalisweni kwamandla ezimbonini, ekusakazweni kwesakhiwo esikhulu kanye nokuvikelwa kwemishini.I-RCB yochungechunge lwe-RDM5 enamandla amakhuluNjengesibonelo esisebenzayo, lesi sihloko sichaza indlela ecacile nesebenzayo yokukhetha ukusiza onjiniyela nabathengi ukuthi basheshe babone imodeli efanele.

Izimiso Zokukhetha Okuyinhloko

1.Isilinganiso samanje (ngaphakathi):Khetha ngokuya ngomthamo womthwalo ophelele ophindwe ngo-1.25, ohambisana namandla emishini noma amasekethe.

2.Umthamo wokuphuka (Icu/Ics):Khetha ngokusekelwe ku-current short-circuit yesistimu ukuqinisekisa ukuthi i-drip ithembekile ngaphansi kwezimo zamaphutha.

3.Inani lezinsika:I-2P yamasekethe esigaba esisodwa, i-3P yemishini yesigaba sesithathu, i-4P yezinhlelo zezintambo ezine zesigaba sesithathu ezinokuvikelwa okungathathi hlangothi.

4.Uhlobo lokuvikela:Ukuvikelwa kokusabalalisa noma kwenjini, okuhambisana nama-curve ahlukene okukhubeka.

5.Izesekeli:Uhambo lwe-shunt, ukukhululwa kwe-undervoltage, oxhumana nabo abasizayo noma be-alamu bangangezwa ukuze kulawulwe kude futhi kubuyekezwe isimo.

Amacala Okufaka Isicelo se-RDM5 Series 250A/400A/630A

I-RDM5-250 (Uhlaka lwe-250A)

● Umthamo wamanje olinganiselwe: 100–250A

● Umthamo wokuphuka (AC400V): Icu 35–50kA, Ics 25–35kA

● Izicelo ezijwayelekile: Ukusatshalaliswa kwamagatsha ezimbonini ezincane neziphakathi, ama-motor anezigaba ezintathu (abalandeli, amaphampu, ama-air compressor), iziteshi ezincane ze-PV box.

● Amathiphu okukhetha: Okubalulekile ku-3P/4P enokukhishwa kwe-thermal-magnetic; inguqulo yokuvikela i-motor yemithwalo ye-motor, ene-assistance/alamu contacts ezingakhethwa.

I-RDM5-400 (Uhlaka lwe-400A)

● Umthamo wamanje olinganiselwe: 200–400A

● Umthamo wokuphuka (AC400V): Icu 50–70kA, Ics 35–50kA; Icu 20–25kA ku-AC690V

● Izinhlelo zokusebenza ezijwayelekile: Ukusatshalaliswa okuyinhloko ezindaweni zokusebenzela, izikhungo zedatha eziphakathi nendawo, ukushintsha okuyinhloko ezakhiweni zezentengiselwano

● Amathiphu okukhetha: I-3P/4P enconyiwe enohlobo lwe-M (ukuphuka okuphakathi); inguqulo ephezulu yohlobo lwe-H yezinhlelo ezinkulu, enokukhishwa kwe-shunt/undervoltage yokuvikela okukude kanye nokungaphenduki kwamandla kagesi.

I-RDM5-630 (Uhlaka lwe-630A)

● Umthamo wamanje olinganiselwe: 400–630A

● Umthamo wokuphuka (AC400V): Icu 50–100kA, Ics 50–75kA; Icu 20–35kA ku-AC690V

● Izinhlelo zokusebenza ezijwayelekile: Ukungena okuyinhloko kwemishini emikhulu, ukuphuma kweziteshi ezincane okune-voltage ephansi, amasekethe okuhlanganisa amabhasi ezimboni

● Amathiphu okukhetha: Ukubaluleka kwe-3P/4P enomthamo we-H-high-breaking; oxhumana nabo abasizayo/alamu ababalulekile bezifunda ezibalulekile, abatholakala ngezinguqulo ezihleliwe nezikhishwayo.

Isifinyezo Sokukhetha Okusheshayo

● 250A: Imithwalo emincane nephakathi nendawo / ukusatshalaliswa kwegatsha → RDM5-250

● 400A: Ukusatshalaliswa okuphakathi nendawo / iswishi enkulu yesakhiwo → RDM5-400

● 630A: Amasekethe angenayo/abalulekile anomoya ophezulu → RDM5-630

Ukukhetha okuphelele nokuvumelana nezimo kungenziwa ngezinyathelo ezintathu:ukulinganisa kwamanje okulinganiselwe → qinisekisa amandla okuphuka → khetha izinti kanye nezesekeli.