Nkhani

Chingwe cha Shanghai Dingzun chapeza mgwirizano wofunika kwambiri wa zaka 5 ndi gulu la migodi atatu apamwamba ku Australia, lomwe limapereka 70% ya zosowa zawo za zingwe zotetezeka (IS). Dziwani momwe zingwe zathu zovomerezeka za Ex-ia, zopanda mphamvu zambiri zimathetsera mavuto azachilengedwe.

Phunzirani zofunikira ndi zosiyana.

Yankho Lolunjika ndi: Ayi.

Phunzirani zofunikira ndi zosiyana.

Inde, malinga ndi IEC 60079-14, zingwe zotetezeka mwachibadwa ZIYENERA kukhala ndi chivundikiro chakunja cha buluu (RAL 5015) kuti zizindikire malo oopsa.

Khodi yamtundu yofunikira iyi imalola kuzindikira mwachangu ma circuits a IS, kuletsa kulumikizana mwangozi kwa mphamvu yosakhala ya IS.

Pali zochepa zomwe zingagwiritsidwe ntchito pa zingwe zazing'ono kwambiri komanso zomwe zilipo kale.

Phunzirani zofunikira ndi zosiyana.

Chingwe chotetezeka cha SWA (Steel Wire Armour) chimaphatikiza mphamvu zoletsa (IS) ndi chitetezo cha makina (chitsulo choteteza waya). Kukana kuphwanya mpaka 4,000 N/10cm, chitetezo cha makoswe/zilombo zolusa, komanso mphamvu yayikulu yolimba kuti zigwiritsidwe ntchito moopsa. Chigoba cha LSZH chabuluu chopepuka chimasunga kutsata kwa IS pomwe chitetezo chimawonjezera kulimba.

Phunzirani zofunikira ndi zosiyana.

Chingwe choteteza moto chomwe chili ndi chitetezo chamthupi chimaphatikiza kuchepetsa mphamvu (kuletsa kuyaka) ndi umphumphu wa dera (kumasunga ntchito yake panthawi ya moto).

Yovomerezeka m'malo oopsa (Zone 0/1/2) yokhala ndi ma ratings monga FE180 (kupulumuka kwa moto kwa mphindi 180) ndi LSZH sheathing.

Dziwani momwe zingwe zozimitsira moto za IS zimadziwira moto popanda kuuyambitsa.

Zingwe zotetezeka mkati mwake zimakhala zabuluu (RAL 5015) malinga ndi IEC 60079-14 kuti zidziwike mwachangu m'malo oopsa. Khodi yofunikira iyi yamitundu imalola akatswiri amagetsi kusiyanitsa nthawi yomweyo ma circuits a IS ndi zingwe zamagetsi zomwe si za IS—kuletsa kulumikizana mwangozi kwa mphamvu zoopsa. Phunzirani muyezo, zosiyana, ndi njira zosankhira.

M'malo oopsa a mafakitale komwe mpweya woyaka, nthunzi ndi fumbi loyaka limayambitsa ngozi zophulika nthawi zonse, mawaya otetezeka mkati (IS) ndi njira yofunikira kwambiri yowongolera chitetezo cha zida zamagetsi zochepa, kulumikizana, ndi ma circuits owongolera. Mosiyana ndi mawaya wamba, mawaya otetezeka mkati mwake amapangidwa kuti achepetse kutulutsa mphamvu zamagetsi pansi pa magwiridwe antchito abwinobwino komanso olakwika, kuchotsa magwero omwe angayatse.

Zingwe zotetezeka mkati mwake ziyenera kukhala zopepuka ngati buluu (RAL 5015) malinga ndi IEC 60079-14 kuti zizindikire malo oopsa.
Khodi yofunikira iyi ya utoto imalola akatswiri amagetsi kusiyanitsa nthawi yomweyo ma circuits a IS ndi zingwe zamagetsi zomwe si za IS, kupewa kulumikizana mwangozi kwa mphamvu zoopsa.
Phunzirani zofunikira ndi zosiyana.

Chingwe chotetezeka mwachilengedwe (IS) chapangidwa kuti chizinyamula mphamvu zamagetsi zochepa zomwe sizingayambitse kuyaka m'mlengalenga wophulika.

Mosiyana ndi zingwe zosaphulika zomwe zimakhala ndi kuphulika, zingwe za IS zimaletsa kuphulika konse. Dziwani tanthauzo la chingwe cha IS, zofunikira pa kapangidwe kake, mtundu wa sheath wabuluu, ndi magawo a chinthu malinga ndi IEC 60079-11.

Chingwe chotetezeka mwachibadwa sichingathe kupanga kapena kusunga mphamvu zamagetsi zokwanira kuti ziyatse moto m'mlengalenga wophulika. Dziwani tanthauzo, momwe zotchinga zochepetsera mphamvu zimagwirira ntchito, chifukwa chake mphamvu zochepa (C) ndi inductance yochepa (L) ndizofunikira, komanso chifukwa chake mtundu wabuluu umafunika padziko lonse lapansi pakukhazikitsa malo oopsa.