Me pēhea te whiriwhiri i te taputapu tiaki ngaru kotahi-wāhanga tika?

Me pēhea te whiriwhiri i te taputapu tiaki ngaru kotahi-wāhanga tika?

I paraihia e au ētahi mīhini kawhe e rua me tētahi kaiwhakahaere CNC $3,800 i mua i taku whakaae kāore au i te mōhio he aha te āhua o te ngaru.

Ka whiriwhiria e au he SPD kotahi-wāhanga mā te tirotiro i ngā tau e toru: te iahiko ngaru mōrahi (kA), te taumata tiaki ngaohiko (VPR), me te whakatauranga ara iahiko poto (SCCR). Tātaitia ēnei ki te rahi o tō pūwāhi me te aro o te kawenga, ā, ka roa ake te ora o te taputapu i te taputapu e tiakina ana e ia.

Pānuihia tonu mēnā kei te hiahia koe ki te tātari toru meneti te roa e whakamahia ana e au, kia kore ai au e moumou taima ki te pepa raraunga hē anō.

Te Mārama ki te Mana Wāhanga Kotahi?

I mahara ahau i mua ko te tikanga o te "wāhanga-kotahi" he kotahi te waea tae noa ki te wā i pakaru ai te fuse ka kite ahau i ngā waea e rua me te oneone i roto i te panera.

Ko te hiko kotahi-wāhanga ko te ratonga waea-rua 230 V, 120 V rānei e whāngai ana i ngā kāinga me ngā toa iti. Kotahi te ara iahiko wera, kotahi te ara iahiko kore, me te ngaru sine e whakahoki ana ka hoatu ki a koe te kaha katoa e hiahiatia ana e koe mō ngā rama, ngā pona, me ngā mīhini huri hiko.

He aha te hiranga o te āhua o te ngaru

Ka pā te ngaru sine ki te tihi 325 V i roto i te pūnaha 230 V. Ka eke te ngaru ki runga i taua tihi, ā, ka taea te eke ki te 600 V i roto i ngā maikorohekona. Mena he 275 V RMS te whakatauranga o tō SPD, ka mura wawe, ka tapahia te tihi o te ngaru. Mena ka hopukina e koe he tauira 420 V nā te mea he iti ake te utu, ka rere tika te ngaru ki roto i tō VFD. Kei roto i taku pouaka taputapu he oscilloscope pute; mā te titiro kotahi ki te ngaru kua tapahia ka mōhio ahau mena kua whiriwhiria e au te akomanga ngaohiko tika.

Ripanga 1: Ngā ngaohiko kotahi-wāhanga noa vs. te akomanga ngaohiko SPD kua tūtohutia

He aha te Parenga Ngaru Kotahi-Wāhanga?

I kī atu ahau ki taku kaihoko he momo whiri hiko whakapaipai noa iho te parenga ngaru; i tukuna mai e ia te pire whakatika mō te taputapu tapahi taiaho.

He taputapu ārai ngaru kotahi-wāhanga he mea hanga kiato e mau ana i te taha o tō papa pakaru. I roto, ka hurihia e ngā momo momo whakarewa-waikura (MOV) me ngā ngongo hau te iahiko nui ki te whenua i roto i te iti iho i te 25 nanohekona, ka noho tonu ō kawenga i raro i tō rātou ngaohiko ātete.

Ngā wāhanga ka taea e koe te kite

Whakatuwheratia te pouaka kirihou, ā, ka kitea e koe ētahi kōpae e toru e āhua rite ana ki ngā moni. Ko ngā MOV ēnā. Kei te taha o ia kōpae he fiusi wera; ki te wera rawa te MOV, ka puare te fiusi, ā, ka mate te rama rama matomato. I tapahia e au tētahi waeine pakaru; kua ngaro te waea fiusi, ā, kua mangu te MOV. Nā taua tirotiro tirohanga i whakaora ahau i te tāuta anō i tētahi parenga mate.

Ripanga 2: Ngā wāhanga o roto me ngā āhuatanga e whakamate ana i a rātou

Me pēhea te mahi a te Pūrere Tiaki Ngaru Wāhanga Kotahi (SPD Wāhanga Kotahi)?

I mātakitaki ahau i te pānga o te 40 kA ki taku pūhiko hiko; ko te pikinga o te ngaohiko i te putanga hiko he 90 V anake, kaua ki te 1,200 V.

Kei te tū te SPD i runga i te rārangi-kore me te rārangi-whenua. Ina tae mai te ngaru, ka huri ōna wāhanga o roto ki te āhua iti-ārai i roto i ngā nanohekona. Ka haere te ia ngaru mā roto i te SPD, ehara i tō pūreretā, ā, ka noho te ngaohiko kume i raro i te paepae kino o te kawenga tairongo.

Te pihi whakapūmau

He kōpiko kei ia MOV e whakaatu ana i te ngaohiko me te iahiko. I te 1 mA ka tīmata te MOV ki te kawe i te hiko; i te 1 kA ka teitei ake te ngaohiko i te 50%. Ka whakatakotoria e au taua kōpiko ki runga i te whakatakotoranga ātete o taku CNC. Mena ka mate te CNC i te 800 V, ā, ka eke te MOV ki te 820 V i te 3 kA, ka neke atu ahau ki tētahi MOV nui ake, ka tāpirihia rānei tētahi wāhanga tuarua. Kāore au e whakawhirinaki ki te rārangi anake; ka tuhia e au ngā rārangi e rua, ka rapu i te āputa.

Te Mātāpono Mahi o te Kaitiaki Ngaru Wāhanga Kotahi?

I mahara ahau i mua ko te "mātāpono mahi" he mahi noa iho i te hokohoko, ā, tae noa ki taku kitenga i tētahi mura i peke atu i tētahi poraka whakamutunga.

Ko te kaupapa mahi he hinganga ātete māmā noa. I raro i te ngaohiko noa, he rite te SPD ki tētahi ara iahiko tuwhera. Ina tāpirihia he kaha tāpiri e te ngaru, ka pakaru ngā kakano MOV, ka hanga he ara poto, ka arahi i te kaha ki te whenua. Kia mutu te ngaru, ka tautuhi anō te MOV ka tatari mō te pānga e whai ake nei.

Te tiritiri pūngao i roto i te waeine

Kāore te ngaru hiko 20 kA e tau ki runga i tētahi MOV. E toru ngā MOV e whakamahia ana e te waeine i te wā kotahi, nō reira ka pau i ia kōpae te hautoru. Ki te tere ake te pakeketanga o tētahi MOV, ka heke tōna ātete, ā, ka tahaetia he iahiko, ka wera ake, ā, ka mate i te whakakā wera. Mā taua matenga ataahua ka ora tonu ngā mea e rua. Ka tirohia tonutia e au ngā waehere rā; ko ngā MOV mai i te tau kotahi i te tere kotahi, nō reira kei aku kete whakakapinga ngā tohu rā e ōrite ana.

Me pēhea te tāuta i tētahi parenga ngaru kotahi-wāhanga?

I honoa whakamuri e au tētahi SPD; i noho matomato tonu te LED engari i memeha haere te parenga pērā i te paoa.

Whakawetohia te pūwāhi matua. Honoa te aho SPD ki te taha kawenga pūwāhi, te aho kūpapa ki te pae kūpapa, me te aho whenua ki te pae whenua. Kia poto ake ngā taura i te 30 cm, takaihia ngātahi, ka whakapūmau i te taipana ki te 2 Nm. Katia te panera, whakakāhia, ā, whakaū kia mau tonu ngā rama LED matomato.

Whakamātautau roa arahi ka whakahaerehia e au i runga i ngā mahi katoa

Ka whakamahia e au he kaihanga tohu 1 MHz, ā, ka tapahia he waea 10 cm te roa puta noa i ngā pito SPD. Ka takirua te hekenga ngaohiko ina tāpirihia e au tētahi atu 10 cm. Mā taua whakamātautau ka kitea e au ko te 30 cm te rohe mārō; mā ia henimita tāpiri ka tāpirihia te 40 V ki te tuku-ā-roto. Mena he kī tonu te panera, ka whakairihia e au te SPD ki te tatau, ka whakamahia he parahi whiri; ka tapahia e te āhua papatahi te inductance mā te haurua.

Te Whakamahinga o ngā Parenga Ngaru Takitahi-Wāhanga i roto i ngā Pakihi Iti?

E toru ngā oumu i ngaro i te toa tunu kai a taku kiritaki i roto i te tupuhi kotahi; i whakapae te tangata inihua i te "pōuri" tae noa ki te wā i whakakitea atu ai e mātou ki a ia te SPD rewa i whakahoutia e mātou i te rā i muri mai.

Ka tiakina e ngā SPD wāhanga-kotahi ngā rehita moni, ngā mīhini kawhe, ngā pouara CNC, me te CCTV i roto i ngā toa iti. Ka uru ki roto i tētahi whatanga 1U, ka whakairihia rānei ki runga i tētahi reera DIN i te taha o te mita. Mā tētahi waeine 20 kA ka taea te whakahaere i te raina tunu katoa i te wā o te whatitiri.

Te mahi tinihanga mō te utaina o te rōpū e whakamahia ana e au

Ka whakarārangihia e au ia taputapu i raro i te 16 A, ka tohua he "tairongo" he "uaua" rānei. Ka tohaina e ngā kawenga tairongo pērā i ngā PLC te kotahi SPD me te 550 V VPR. Ko ngā kawenga uaua pērā i ngā whakamahana ka noho i muri i te tuarua o ngā SPD me te 650 V VPR. Mā te wehewehenga ka whakaitihia te utu nā te mea he 30% te iti ake o te tauira 650 V. E whakaatu ana taku ripanga tātai ki te rangatira he penapena $210 me te wā arahi poto ake mai i tā mātou wheketere Wenzhou.

Ngā Ture Tāutanga hei Whai?

I tapahia e au ngā kokonga kotahi, ā, i whakamātauria ngā taura 50 henemita te roa nā te mea he ātaahua ake te āhua o te reera DIN; i mea te kaitirotiro kia haehaea e au.

Whāia ēnei ture e whā: kia mau ngā taura ki raro i te 30 cm, whakamahia te parahi 16 mm², tāpirihia he whati hiko 32 A ki runga, ā, tāutahia te SPD i muri i te mita engari i mua i te RCD. Whai i te waehere ā-rohe: i Tiamana whakamahia te VDE 0100-443, i te UK whai i te BS 7671 534.

Ripanga 3: Rārangi arowhai tere ka tukuna e au ki taku kapa

Whakamutunga

Kōwhiria ngā tau, tapahia ngā taura, whakakāhia ngā tīwiri, ā, ka mate tō SPD wāhanga-kotahi, kia kore ai ō mīhini e mate.

Tukua mai he mēra ki caroline@leikexing.com mō tētahi whakatau utu whārangi kotahi, ā, ka tukuna atu e mātou tō puranga ritenga mai i Wenzhou i roto i ngā rā 15.