He aha te mea: nekeneke autō tuatea iahiko
Ēnei tuatea iahiko tiaki tipu i iahiko poto i roto i te rohe o to ratou kaha pakaru me te tikanga o pāngia e autō (tetahi ia wāhanga). pakaru taiawhio autō ko katoa-pou i te tīmatanga: wā kotahi ka kotahi keu autō whakatuwhera nga amo katoa.
Hoki iti ngā poto-iahiko, mahi tere atu i fuses tuatea iahiko. e ü ana tēnei tiaki ki te paerewa IEC 60947-2. Hei te wahi i te nāianei poto-iahiko tika, i reira e toru mau titauraa:
· Te kitenga wawe o te nāianei hē,
· Wehenga Rapid o nga hoapā,
· Naianei o te nāianei poto-iahiko.
motors AC - Parenga ki iahiko poto
Katoa pūkaha hiko he rohe whakahaere. Overshooting enei rohe e faifai whakangaromia ai me nga pūnaha pei reira, te pānga tonu te whakaweto whakahaere me te parekura. He ara iahiko poto ko te whakapā tika i waenganui i rua ngā o rerekē pūmanawa hiko:
- tauutuutu nāianei : wāhanga-ki-wāhanga whakapā, wāhanga-ki-kūpapa whakapā, wāhanga-ki-whenua whakapā whakapā i waenganui i kopiko i roto i te wā, ranei
- Direct current: contact between two poles or between the ground and the pole insulated from it.
Ka taea e whai i te maha o take tenei: kino ki te wanihi te tuuraa i te conductors, wewete, whati huia waea ranei taura, whakarewa tinana ke, whakahaere putunga (puehu, makuku, me ētahi atu), e papii o te wai ranei te tahi atu fluids whakahaere ranei, he waea i roto i te whakaminenga tiaki ranei.
He hua taiawhio poto i roto i te ngaru ohorere o nāianei e taea tae e rave rahi rau nga wa te nāianei mahi i roto i hākonamano. Ka taea e te ara iahiko poto i pānga kino, me te nui taputapu kino. Kei te typified reira e rua ari.
tītohunga Thermal
He āhuatanga waiariki e ōrite ana ki te pūngao tukua ki te ara iahiko hiko whiti e te ara iahiko poto nāianei ahau mo i wa t i runga i te tātai ahau 2 t a faaite rite te 2 s. Ka taea e tēnei pānga waiariki meinga:
· Te rewanga o nga hoapā kaiwhakahaere,
· Te whakangaromanga o nga āhuatanga waiariki i roto i te tānga bimetal ki he momo 1 ruruku,
· Generation o arcs hiko,
· Calcination o te tuuraa rauemi,
· Ahi i roto i te taputapu.
· fuses , e whati i te ara iahiko i te rewa, a me whakakapi muri,
· Taiawhio autō tuatea e whati i aunoa i te ara iahiko, me te anake rapu ki te kia tautuhi anō.
taea hoki te hanga tiaki Poto-iahiko ki ngā pūrere multifunction pērā i te tiaki nekeneke hei timata me tuatea contactor.
Whakamāramatanga me ngā āhuatanga
Ko te āhuatanga matua o ngā pūrere tiaki poto-iahiko ko:
· Breaking kaha : te uara teitei i roto i te nāianei poto-iahiko tata e taea te pūrere tiaki whatiia i te ngaohiko i homai,
· Te kaha Whakakapi : te uara teitei taea te pūrere tiaki tae ki tona ngaohiko tauanga i roto i ngā āhuatanga i tohua. Ko te uara kati ko ngā wā k te kaha break rite whakaaturia i roto i te ripanga i raro nei.
kaha Break (BC) |
φ Koha |
Kati te kaha (CC) |
4.5kA <BC <6kA |
0.7 |
1.5 BC |
6kA <BC <10kA |
0.5 |
1.7 BC |
10kA <BC <20kA |
0.3 |
2 BC |
20kA <BC <50kA |
0.25 |
2.1 BC |
50kA <BC |
0.2 |
2.2 BC |
Whatiia me kati aravihi mō te iahiko tuatea i te paerewa IEC 60947-2
fuses
Fuses mahi wāhanga-e-wāhanga (pou kotahi) tiaki ki te kaha whati tiketike i rōrahi iti. whakawhāiti ratou I2t me te ahotea electrodynamic (Icrête).
E eke ratou:
· I tautoko motuhake huaina fuseholders,
· Ranei i runga i isolators i te wahi o nga turanga, me te hononga.
Kia mahara taua haerenga tohu taea te waeahia cartridges wiki ki te pūrere whakawhitinga katoa-pou (te nuinga o te contactor mana nekeneke) ki te ārai i mahi singlephase ina rewa ratou.
He motuhake i roto i taua tukua ratou i roto i te nga fuses whakamahia mō te tiaki nekeneke overcurrents tika ki te nāianei magnetising ina e whakakāngia i runga i motors. E kore e tika ana mō te tiaki ki kikī (pērā fuses GG) pera me te tāpiri i te tānga kikī ki te ara iahiko motor supply mana ratou. I roto i te whānui, kia waiho ratou rahi noa ki runga ake i te nāianei kawenga tonu o te nekeneke.
Post time: Aug-13-2018