Zviteshi zvine zvinhu zvitatu zvinonyanya kukosha: zvinhu zvemagetsi, zvivakwa zvemagetsi uye zvimiro zvezvakatipoteredza.

　　1. Magetsi anoshanda

　　Kana terminal ichishandiswa sewaya yekubatanidza, chekutanga, kushanda kunofanirwa kunge kuri kuita kwemagetsi.

　　Zvinonyanya zvinosanganisira: contact resistance, insulation resistance uye dielectric simba.

　　1. Kuramba kubata, zvinobatanidza magetsi zvemhando yepamusoro zvinofanira kuva nechepasi uye zvakadzikama kuonana kuramba.

　　2. Insulation resistance, chiyero chekushanda kwekudzivirira pakati peterminal. macontacts uye pakati pemabatiki negoko.

　　3. Simba redhielectric ndiyo inomira voltage uye dielectric inomira voltage.

　　　 2. Mechanical properties

　　Kuitwa kwemechani kunonyanya kusanganisira simba rekupinza uye hupenyu hwemuchina we chibatanidza. Iyo yekuisa uye yekubvisa simba uye hupenyu hwemuchina weiyo terminal ine hukama neiyo yekubata chimiro (yakanaka kudzvanywa), iyo yekubikira yemhando yechikamu chekubata (inotsvedza friction coefficient) uye kurongeka kwedimensional (kurongeka) kweiyo yekubata.

3. Kuitwa kwezvakatipoteredza

　　Zvakajairwa kwezvakatipoteredza zvinosanganisira: kusamira tembiricha, kusanzwa kunyorova, kusada kupfapfaidza munyu, kuzunguzika uye kusatya kuvhunduka, nezvimwe.