Hoʻokahi - Hiki ke hoʻopili ʻia ka pale Leakage Phase i ka ʻekolu - Phase Four - Wire Circuit

ʻĀpana hoʻokahimea mālama leakage(hana ʻia eminiature-circuit-breaker) ʻaʻole hiki ke hoʻopili ʻia i ka ʻāpana ʻekolu ʻehā uea kaapuni.He loea ka ʻenehana,hoʻololi leakage hoʻokahi MCBi ka leakage mea mālama i loko o ka zero-sequence current transformer detection is a phase line (mua) and a null line of the left current vector, once the leakage current oi 30mA, through the terminal to execute the tripping device, forcing the internal tripping. hana ʻōnaehana, e hoʻokō i ka hana mālama.

ʻO ke kiʻi uea o2P leakage kuapoe like me ka mea i hōʻike ʻia ma lalo nei:

Hiki ke hoʻopili ʻia ka pale leakage hoʻokahi i ka ʻekolu - ʻehā - kaapuni uea

Hoʻololi leakage hoʻokahiLoaʻa ka mana laina laina a me ka laina null, aia nā mana laina kaʻawale.ʻOiai aia kahi laina null i loko o ka mana lako ʻehā ʻehā, hiki ke haku ʻia me ka volta 220V me nā laina laina ʻekolu me ka ʻole, akā ʻaʻole hiki iā ia ke hoʻomalu i nā laina ʻelua ʻelua.

Hōʻike ʻia ke kiʻikuhi uea o ʻekolu ʻāpana leakage ʻehā ʻehā ma ke kiʻi ma luna.

He mea pono e hoʻomaopopo i kaʻekolu manawa leakage switch ua maheleia i 3P a me 3P+N, kahoʻololi leakageʻOi aku ke kumukūʻai o kēia hale ma mua o ka hoʻololi leakage hoʻokahi.

3P + N mana lako hoʻokomo uea wale pono e ike i ka neutral uea ua pili ia N, a me kekahi L1, L2, L3 hiki ke hoʻopili i ka uwea terminal.

3 p + N leakage o ka mālama ʻana i ka laina N pololei (ʻaʻohe mea ʻokoʻa i ka mokuʻāina o ke kahawai), pono ka pilina ma mua ma ka ʻaoʻao hema, ʻo ka laina null ma ka laina ma ka N, inā hewa uea N i mua. 'a'ole hiki ke ho'omau i ke kaapuni tripping ho'omau i ka mālama 'ana i ka uila.