I. Cov Ntsiab Lus Tseem Ceeb ntawm Cov Thawv Xa Khoom
Lub thawv xa khoom yog cov khoom siv tseem ceeb hauv lub zog siv hluav taws xob siv rau hauv nruab nrab ntawm kev faib hluav taws xob hluav taws xob, kev tswj cov circuits thiab kev tiv thaiv cov khoom siv hluav taws xob. Nws faib hluav taws xob hluav taws xob los ntawm cov khoom siv hluav taws xob (xws li transformers) rau ntau yam khoom siv hluav taws xob thiab koom ua ke tiv thaiv kev ua haujlwm xws li overload, luv Circuit Court thiab to.

Main siv:

Kev faib tawm thiab tswj cov hluav taws xob hluav taws xob (xws li cov khoom siv hluav taws xob rau cov teeb pom kev zoo thiab cov khoom siv hluav taws xob).

Kev tiv thaiv Circuit Court (overload, luv Circuit Court, to).

Saib xyuas cov xwm txheej hauv Circuit Court (voltage thiab tam sim no zaub).

Ii. Kev faib tawm ntawm cov thawv ntim khoom
Los ntawm daim ntawv thov scenarios:

Lub thawv ntim khoom hauv tsev: me me, nrog rau qib kev tiv thaiv qis, kev sib xyaw ua ke tiv thaiv, cua hloov pauv, thiab lwm yam.

Lub thawv ntim khoom lag luam: Lub peev xwm loj, qib kev tiv thaiv siab (IP54 lossis siab dua), txhawb kev tswj xyuas kev sib tw.

Sab nraum zoov faib lub thawv: Waterproof thiab plua plav pov thawj (IP65 lossis siab dua), haum rau qhov chaw qhib cua.

Los ntawm txoj kev installation:

Exposed installation hom: Ncaj nraim rau phab ntsa, yooj yim rau nruab.

Hom zais cia: Embedded nyob rau hauv phab ntsa, nws yog aesthetically pleasing tab sis kev tsim kho yog complex.

Los ntawm kev tsim qauv:

Tsau hom: Cov khoom xyaw yog ntsia rau hauv ib qho kev ruaj khov, nrog tus nqi qis.

Drawer-type (modular faib lub thawv): Modular tsim, yooj yim rau kev txij nkawm thiab nthuav dav.

Iii. Cov qauv tsim ntawm cov thawv ntim khoom
Box lub cev:

Khoom siv: Hlau (txias-rolled steel phaj, stainless hlau) los yog non-hlau (engineering yas).

Kev tiv thaiv qib: IP codes (xws li IP30, IP65) qhia tias muaj peev xwm tiv taus plua plav thiab dej.

Internal hluav taws xob Cheebtsam:

Circuit Court breakers: Overload / luv-circuit tiv thaiv (xws li cua keyboards, molded case Circuit Court breakers).

Disconnector: Manually txiav tawm lub hwj chim mov.

Cov cuab yeej tiv thaiv cov dej xau (RCD): Tshawb xyuas cov dej xau tam sim no thiab kev mus ncig.

Hluav taws xob ntsuas: ntsuas hluav taws xob.

Contactor: Tej thaj chaw deb tswj lub hauv thiab tawm ntawm Circuit Court.

Surge protector (SPD): Tiv thaiv xob laim lossis overvoltage.

Auxiliary Cheebtsam:

Busbars (tooj liab los yog txhuas busbars), lub davhlau ya nyob twg thaiv, taw qhia teeb, cua txias kiv cua, thiab lwm yam.

Iv. Technical Parameters ntawm lub thawv xa khoom
Rated tam sim no: xws li 63A, 100A, 250A, uas yuav tsum tau xaiv raws li tag nrho lub zog ntawm lub load.

Rated voltage: Feem ntau 220V (ib-theem) lossis 380V (peb-theem).

Kev tiv thaiv qib (IP): xws li IP30 (pov thawj), IP65 (dej-pov thawj).

Short-circuit endurance: Lub sijhawm tiv thaiv luv luv tam sim no (xws li 10kA / 1s).

Kev muaj peev xwm tawg: Qhov siab tshaj plaws tam sim no uas lub Circuit Court breaker tuaj yeem txiav tawm yam xyuam xim.

V. Phau ntawv qhia txog kev faib cov thawv
Raws li hom load:

Teeb pom kev zoo: Xaiv lub 10-16A me me Circuit Court breaker (MCB).

Cov khoom siv lub cev muaj zog: Cov thermal relays lossis lub cev muaj zog tshwj xeeb Circuit Court breakers yuav tsum tau muab sib xyaw.

Cov chaw siab heev (xws li chav dej): Ib qho khoom siv tiv thaiv dej (30mA) yuav tsum tau nruab.

Kev suav suav

Tag nrho tam sim no yog ≤ qhov ntsuas tam sim no ntawm lub thawv xa khoom × 0.8 (kev nyab xeeb margin).

Piv txwv li, tag nrho lub zog load yog 20kW (peb-theem), thiab tam sim no yog kwv yees li 30A. Nws raug nquahu kom xaiv lub thawv 50A faib.

Environmental adaptability

Qhov chaw ntub dej: Xaiv lub thawv stainless hlau lub cev + qib siab tiv thaiv (IP65).

Kev kub kub ib puag ncig: Cov cua kub dissipation qhov los yog kiv cua yuav tsum tau.

Extended xav tau:

Khaws 20% ntawm qhov chaw khoob los pab txhawb kev sib ntxiv ntawm cov kab hluav taws xob tshiab tom qab.

Vi. Kev txhim kho thiab kev saib xyuas ceev faj
Installation xav tau:

Qhov chaw yog qhuav thiab zoo-ventilated, deb ntawm cov ntaub ntawv flammable.

Lub thawv muaj kev ntseeg siab hauv av los tiv thaiv kev pheej hmoo ntawm hluav taws xob.

Hlau xim specifications (nyob hlau liab / daj / ntsuab, nruab nrab hlau xiav, av xaim yellowish ntsuab).

Maintenance cov ntsiab lus tseem ceeb:

Tsis tu ncua xyuas seb cov hlau puas xoob lossis oxidized.

Ntxuav cov plua plav (kom tsis txhob muaj luv luv).

Ntsuam xyuas cov cuab yeej tiv thaiv (xws li nias lub pob tiv thaiv kev tiv thaiv ib zaug ib hlis).

Vii. Tej teeb meem thiab kev daws teeb meem
Nquag tripping

Ua rau: Overload, luv Circuit Court lossis to.

Troubleshooting: Disconnect tus load kab los ntawm kab thiab nrhiav qhov faulty circuit.

Tripping ntawm cov khoom tiv thaiv to

Muaj peev xwm: Kev puas tsuaj rwb thaiv tsev ntawm lub Circuit Court, xau hluav taws xob los ntawm cov khoom siv.

Kev Kho Mob: Siv ib lub megohmmeter los kuaj cov rwb thaiv tsev.

Lub thawv yog overheating.

Ua rau: Tshaj dhau lossis kev sib cuag tsis zoo.

Kev daws: Txo cov load los yog zawm cov terminal blocks.

Viii. Txoj Cai Kev Nyab Xeeb
Nws yuav tsum ua raws li lub teb chaws cov qauv (xws li GB 7251.1-2013 "Low-voltage Switchgear Assemblies").

Thaum txhim kho thiab tswj xyuas, lub zog yuav tsum raug txiav tawm thiab kev ua haujlwm yuav tsum tau ua los ntawm cov kws tshaj lij hluav taws xob.

Nws raug txwv tsis pub hloov kho cov kab hluav taws xob sab hauv ntawm lub siab nyiam lossis tshem tawm cov khoom siv tiv thaiv.