High-Voltage Load Switch - Fuse Combination Electrical Appliance Solution: Gidadiyar Inganci na Biyan Ayyuka a kan IEE-Business Daga Transfer Current

I. Muhimmin da Gida da Aikace-aikacen​
Wannan bayanin ya shafi ƙarin gida na yawan kisan cewa "transfer current" na aikin "load switch-fuse combination electrical appliance" tare da zama a kan yawan kisan da aka samu a tsakanin, inda ake yi ƙarfin ƙarƙashin wanda ke ƙarƙashin jirgin karami. Dalilin ya shafi bayyana ɗaukan hukumomin, tabbatarwa, da amfani, don in ba da ɗaukake da za su iya ƙoƙari da amfani da aikin kombinaci a matsayin ɗaya, saboda haka ya ƙara ƙarfi ta ƙungiyar load switch daga sauka ƙungiyar ma ƙarƙashin da suka haifar da ita da kyau, da kuma inganta duk ƙarƙashin ƙarfin da take.

​II. Muhimmanci: Transfer Current​

1. ​Tsarin da Kayan Aiki​
   Transfer current shine ɗaya daga cikin manyan yawan kisan da ke siffarsa wadanda ke ƙarƙashin ƙungiyar fuse ko ƙungiyar load switch. Yadda ake samun shi ya shiga da kayan aiki na ƙungiyar kombinasi:
   • ​Kisan ƙarƙashi mai tsawo: Fuse na birnin (na farkon) ya ƙasa kafin ƙungiyar load switch, kuma striker shi ya haifar da mekanismen ƙungiyar load switch, kuma ya ƙara ƙungiyar ta hanyar kusa ƙungiyar ta.
   • ​Kisan ƙarƙashi mai yawa: Duk ƙungiyoyi na fuse suna ƙasa kafin ƙungiyar load switch, saboda haka suna ƙara ƙarƙashin kafin ƙungiyar load switch ya ƙara.
   • Transfer current shine ɗaya daga cikin hanyoyin da ake amfani a kan ƙarƙashin.
2. ​Yadda ake Siffar da Shugaban Kasa​
   A kan IEC standards, transfer current (Itr) an siffar da shi a kan:
   • Waktar ƙara ta ƙungiyar load switch (T0): Waktu daga lokacin da striker ya haifar da mekanismen ƙungiyar load switch zuwa lokacin da ƙungiyar ta ya ƙara.
   • Tsarin kayan aiki na fuse: A kan tsarin kayan aiki na fuse da yanayin -6.5%, kisan ƙarƙashi na musamman na waktar T0 * 0.9 ya zama transfer current.
3. ​Tsarin da Muhimman Farkon​
   • ​Rated transfer current: An siffar da shi a kan ƙungiyar fuse da ake amfani a kan ƙungiyar load switch.
   • ​Actual transfer current (Ic,zy)​: Wadanda ake buƙata a kan ƙungiyar fuse da ake amfani a kan ƙungiyar load switch, da kuma T0.
   • ​Muhimman Farkon: Waktar ƙara ta ƙungiyar load switch (T0) shine muhimmiyar farko. Wannan ya ƙara transfer current ta zama mai yawa. Tsarin kayan aiki na fuse shine ɗaya daga cikin muhimman farkon.

​III. Muhimman Amfani da Prosesin Bayyana​

1. ​Zaɓin Zane​
   Don in ƙara ƙarfi, wannan sharti ya faru:
   Kisan ƙarƙashi na uku a kan busbar na ƙaramin ƙaramin jirgin karamin, ya ci ƙaramin ƙaramin (Isc) > Actual transfer current na ƙungiyar kombinasi (Ic,zy)
   • ​Idan ana samun: Kisan ƙarƙashi na uku ya ƙara ƙungiyar fuse, kuma ya ƙara ƙungiyar load switch.
   • ​Idan ban samu: Ƙungiyar load switch ya ƙara ƙarƙashin (kusan ƙarƙashi na biyu), kuma ya ƙara Transient Recovery Voltage (TRV) mai yawa, wanda ya ƙara ƙarƙashin da ya ƙara ƙungiyar ta, da kuma samun abin da ya ƙara.
2. ​Bayyana da Amfani​
   Don in ƙara ƙarfi ƙungiyar kombinasi, wannan hanyoyin ya faru:
3. ​Ambaci parametere na ƙarƙashin: Samun ƙarƙashin ƙarƙashi, ƙarƙashin jirgin karamin, da kuma ƙarƙashin impedance voltage.
4. ​Zabe da bayyana: A kan ƙarƙashin jirgin karamin, zabe ƙungiyar fuse da ƙungiyar load switch.
5. ​Shirya kayan ƙarƙashi:
   o Shirya kisan ƙarƙashi na uku a kan ƙaramin ƙaramin jirgin karamin, da kuma ci ƙaramin ƙaramin (Isc).
   o A kan ƙungiyar fuse da ƙungiyar load switch, shirya actual transfer current (Ic,zy).
6. ​Bayyana mafi ƙarfi: Samun Isc da Ic,zy.
   o Idan Isc > Ic,zy, bayyana ya faru, kuma amsa ya ƙara ƙarfi.
   o Idan Isc < Ic,zy, amsa ya ƙara ƙarƙashin, kuma ya faru ƙoƙarin bayyana (tuntuɗi Part IV).
7. ​Bayyana ƙarfi na ƙungiyar load switch: Shirya cewa rated transfer current interruption capability na ƙungiyar load switch ya ƙara Ic,zy. Wannan shine ƙarfin ƙarfi na ƙarƙashi.

​IV. Bayanan Hanyoyin​

1. ​Ƙarƙashin Jirgin Karamin ≤ 630kVA​
   • ​Amsa: Amfani ƙungiyar kombinasi ya ƙara ƙarfi da ƙoƙari.
   • ​Bincike: A cikin jerin, ƙarƙashin jirgin karamin 500kVA da 630kVA (da 4% impedance), sharti Isc > Ic,zy ya faru idan ƙarƙashin ƙarƙashi ya ƙara.
   • ​Tambayar: Zabi ƙungiyar kombinasi na pneumatic load switch.
2. ​Ƙarƙashin Jirgin Karamin 800 ~ 1250kVA​
   • ​Amsa: Yankin mai ƙarƙashin, bayyana da ƙoƙari.
   • ​Bincike: A cikin jerin, ƙarƙashin jirgin karamin 800kVA da 1250kVA (da 6% impedance), sharti Isc > Ic,zy ba faru ba. Idan ake zabe ƙungiyar load switch na vacuum ko SF6, transfer current ya zama mai yawa, wanda ya ƙara sharti ba faru ba.
   • ​Amfani ƙoƙarin:
   o Zabe ƙungiyar pneumatic load switch da waktar ƙara mai tsawo (T0) don ƙara transfer current, kuma ƙara sharti.
   o Tuntubi da masu ƙungiyar don in tuntubi cewa ƙungiyar load switch na vacuum ko SF6 zai iya ƙara (da T0 mai yawa) don ƙara transfer current mai tsawo.
   o Idan sharti ba faru ba, amsa ya faru ƙungiyar kombinasi.
   • ​Tambayar na ƙarfi: Ƙarƙashin jirgin karamin 1000kVA da 1250kVA, zai iya amfani ƙungiyar circuit breaker.
3. ​Ƙarƙashin Jirgin Karamin > 1250kVA​
   • ​Amsa: Amfani ƙungiyar circuit breaker don ƙarƙashin da ƙoƙari.
   • ​Bincike: Ƙarƙashin ƙarƙashi a wannan ƙarƙashin ya ƙara ƙarƙashin ƙungiyar kombinasi, ƙungiyar circuit breaker shine ɗaya daga cikin ƙungiyoyin da za su iya ƙara ƙarfi.

​V. Bincike da Ƙarin Bayani​

1. ​Bayyana da ƙoƙari: Ba ƙara ƙarfi ne a kan tattalin ƙarƙashin jirgin karamin, amfani ƙungiyar kombinasi. Ya faru shirya Isc da Ic,zy.
2. ​Shirya ƙungiyar load switch: Ba ƙara ƙarfi ne ƙungiyar load switch na vacuum ko SF6 na ƙarƙashin mai yawa. Wannan ya ƙara transfer current mai yawa, wanda ya ƙara ƙarƙashin.
3. ​Ƙarƙashin ƙarƙashi: Ƙarƙashin ƙarƙashi ya ƙara ƙarƙashin Isc. A cikin ƙarƙashin ƙarƙashi mai tsawo, misali a kan industrial parks ko ƙarƙashin ƙarƙashi, ƙarƙashin ya ƙara ƙarƙashin, kuma ya faru ƙoƙarin bayyana.