Tus naj npawb ntawm tus ncej (P tus naj npawb) hauv Circuit Court breaker txiav txim seb tus naj npawb ntawm cov kab hluav taws xob nws tuaj yeem tswj tau thiab txiav tawm ib txhij. Nws yog ib qho tseem ceeb tsim parameter rau kev ua kom muaj kev nyab xeeb ntawm kev sib cais thiab kev ua haujlwm ruaj khov.
Cias muab, tus naj npawb ntawm tus ncej txiav txim siab "yuav muaj pes tsawg cov xov hlau uas lub Circuit Court breaker tuaj yeem txiav tawm." Cov lej sib txawv sib txawv raws li txoj hauv kev sib txawv thiab daim ntawv thov scenarios, cuam tshuam ncaj qha rau hluav taws xob kev nyab xeeb, kev tiv thaiv cov cuab yeej siv tau zoo, thiab qib ntawm kev sib cais hluav taws xob thaum tu.
Lub ntsiab lus tseem ceeb thiab Hom Hom Ncej Tus naj npawb ntawm cov ncej hauv Circuit Court breaker feem ntau yog sawv cev los ntawm "P", xws li 1P, 2P, 3P, thiab 4P, sawv cev rau tus naj npawb ntawm cov conductors uas tuaj yeem tswj tau 1, 2, 3, thiab 4 ncej, raws li:
Table Number of Poles Controlled Circuit Description
1P Live Wire nkaus xwb (L) Tsuas yog cov hlau nyob tsuas yog raug txiav; cov kab nruab nrab (N) tseem txuas nrog. Tsim nyog rau tsawg- qhov pheej hmoo circuits xws li teeb pom kev zoo.
1P + N Live Wire + Neutral Wire Ob lub xov hlau raug txiav ib txhij, tab sis tsuas yog cov hlau nyob muaj kev tiv thaiv; lub nruab nrab hlau yog passively disconnected.
2P Live Wire + Tsis Siv Neeg Hlau (Double-Pole Protection) Ob tus ncej muaj ntau dhau thiab luv luv- tiv thaiv Circuit Court, ua tiav kev sib cais fais fab. Haum rau cov keyboards loj lossis siab - cov khoom siv fais fab.
3P Peb Cov Hlau Nyob (L1/L2/L3) Siv nyob rau hauv peb -theem 380V systems, xws li lub cev muaj zog, kiv cua, twj tso kua mis, thiab lwm yam khoom siv fais fab.
4P Peb Cov Hlau Nyob + Cov Hlau Tsis Zoo (L1/L2/L3+N) Siv los ua lub hauv paus hloov lossis khi hloov hauv peb-theem plaub-kab hlau, nws tuaj yeem txiav cov xaim nruab nrab los tiv thaiv cov xwm txheej tshwm sim los ntawm cov hlau tsis huv.
Lub luag haujlwm tseem ceeb ntawm tus lej ntawm tus ncej
Ua kom muaj kev sib cais hluav taws xob thiab ua kom muaj kev ruaj ntseg: Siv 2P lossis 4P Circuit Court breaker kom tshem tawm cov xov hlau nyob thiab nruab nrab thaum tawg lub voj voog, kom tsis txhob muaj kev pheej hmoo ntawm hluav taws xob poob vim yog cov xaim nyob nruab nrab thaum tu.
Matching Power Supply System Hom
Tib -theem 220V System: Feem ntau siv yog 1P, 1P + N, lossis 2P.
Peb-theem 380V System: Yuav tsum siv 3P lossis 4P kom ntseeg tau peb-theem sib npaug thiab tswj tsis tau cov xaim nruab nrab.
Tiv thaiv cov xwm txheej tshwm sim los ntawm cov hlau tsis zoo: Hauv TN-S, TT, thiab lwm yam hauv av, yog tias cov hlau nruab nrab tawg lossis qhov hluav taws xob rau hauv av yog qhov txawv txav, 4P Circuit Court breaker tuaj yeem cuam tshuam cov hlau nruab nrab los tiv thaiv cov khoom puas lossis raug mob.
Lub Rooj Sib Tham Yuav Tsum Tau Ua: Raws li "Low-Voltage Power Distribution Design Code," plaub-ncej keyboards (4P) yuav tsum tau siv rau hauv cov xwm txheej hauv qab no:
TT system nkag kab hloov pauv
Hloov cov hloov pauv ntawm cov khoom siv hluav taws xob ib txwm muaj thiab cov tshuab hluav taws xob standby
IT system hloov nrog tus neeg nruab nrab nruab nrab
