Zithunzi Zamalonda

Zambiri Zamalonda

Shunt Resistor ya KWH Meter

1. Kufotokozera Kwazonse

Shunt ndi imodzi mwama sensor omwe amagwiritsidwa ntchito pa kWh mita, makamaka mu gawo limodzi la kWh mita.
Pali mitundu iwiri ya shunt-Braze weld shunt ndi electron beam shunt.
Electron beam weld shunt ndi chinthu chatsopano chaukadaulo.
EB weld amafunikira kwambiri manganin ndi zida zamkuwa, shunt ndi EB weld ndi yapamwamba kwambiri.
EB shunt ndiyotchuka kwambiri ndipo imagwiritsidwa ntchito kwambiri m'malo mwa braze weld shunt yakale padziko lonse lapansi.

2. Mbali

Kulondola kwakukulu: Kulakwitsa kuli pa 1-5%. Ndikosavuta kupanga kalasi ya 1.0 mita pogwiritsa ntchito EB shunt
Mzere wapamwamba: Mzerewu ndiwokwera kwambiri kotero kuti kusintha kwa mtengo wotsutsa kuli pa gulu lopapatiza. Mtengo wopangira ukhoza kuchepetsedwa chifukwa kuwongolera mita ndikosavuta komanso mwachangu.
Kudalirika kwakukulu: Manganin ndi mkuwa zidasungunuka kuti zikhale m'thupi limodzi ndi mtengo wa elekitironi wotentha kwambiri, kotero kuti mkuwa ndi manganin sizidzachoka pakugwira ntchito kwa mita.
Kudzitenthetsa pang'ono: Palibe solder pakati pa mkuwa ndi manganin, kotero palibe kutentha kwina pa shunt. Mkuwa wogwiritsidwa ntchito mu EB shunt ndi woyera, Umakhala ndi luso loyimirira; kwambiri ngakhale makulidwe kupanga kukana kukhudzana ndi kochepa kwambiri; Gawo lokwanira la gawo ndi pamwamba lidzapereka kutentha kwa slef mwamsanga.
Kutentha kotsika coinfidence: kutentha coinfidence ndi yaying'ono kuposa 30ppm kuchokera -40 ℃–+140 ℃, pali zochepa kukana kusintha kusintha pa kutentha osiyana.
Kugonjetsedwa ndi okosijeni: zinthu zapadera zimakutidwa pa mkuwa kuti zitetezedwe kuchokera ku okosijeni.
Kukhazikika kwanthawi yayitali: magwiridwe antchito abwino amakhala okhazikika mkati mwa zaka 20
Kukana kugunda kwamphezi: Imatha kuyesa mayeso a 3000A 10ms mphezi.
Kukula kwakung'ono ndi kulemera kochepa kumapangitsa msonkhano wa shunt kukhala wosavuta, mayendedwe otsika mtengo.
Mtengo wa EB shunt umagwirizana ndi kapangidwe kake. Kupanga koyenera ndikofunikira pamtengo wotsika.