Yuav ua li cas mus cuag cov RCD

Tsis ntev los no, nyob rau hauv lub qhov rais ntawm hluav taws xob khw muag khoom noj, koj yuav saib tau ib tug xav paub ntaus ntawv, denoted los ntawm lub acronym RCD. Txawm tias lub hauv paus ntawm nws ua hauj lwm tsis muaj dab tsi revolutionary, cia li tam sim no nws muab tau incredibly nrov. Nws yog yooj yim: Yog hais tias ua ntej qhov hluav taws xob nruab nrab cov tsev apartment muaj xws li ib tug ob peb incandescent teeb, muaj hwj huam hlau thiab lub TV receiver, tam sim no rau hauv daim ntawv loj hlob considerably. Raws li, nws tau nce thiab lub peev xwm yuav ua rau muaj hluav taws xob poob siab rau cov neeg. Raws li koj paub, qhov zoo tshaj plaws kev tiv thaiv nyob rau hauv no qhov teeb meem yog rau nruab ib grounding Circuit Court thiab xov hluavtaws rau cov tag nrho cov hluav taws xob khoom rau nws. Txawm li cas los, qhov no yog tsis ib txwm tau. Nyob rau hauv tas li ntawd, ntau yooj yim nyob ze ntawm lub qhov hluav taws xob 'meter' meej txuas lub RCD, es kos cov kab los ntawm tag nrho cov kev ntsuas rau tus tiv thaiv Circuit Court.

tsis muaj dab tsi nyuab

Lub hauv paus ntsiab lus ntawm cov lag luam ntawm lub ruaj ntseg ntaus ntawv yog raws li nyob rau hauv muab piv tiag tiag qhov tseem ceeb ntawm lub ob currents - ntws los ntawm cov theem thiab pes tsawg ceg. Feem ntau lawv yog muaj sib npaug (los yog delta yog nyob rau hauv lub permissible ntau), tab sis cov tsos ntawm cov sib txawv tswvyim yog kho raws li ib tug txaus ntshai los, thiab cov RCD yog muab tua. Yuav kom to taub dab tsi yog qhov kev twb kev txuas daim duab ntawm lub RCD thiab cov cav tov, koj yuav tsum to taub kom meej meej rau saum toj no tej ntsiab cai. Yog li ntawd, cia peb siv lub analogy nrog lub ntim thiab cov kua. Cia paub daws teeb pa ntauwd - nws yog ib qho chav tsev nrog rau tag nrho cov hluav taws xob kev pab. Los ntawm no ob hlab tshem tawm - "tswv yim" rau cov dej thiab cov "tawm los" rau ntws. Nws yog pom tseeb tias thaum tus pej thuam yog lawm, tus xov tooj ntawm cov khoom thiab rov qab kua sib npaug zos. Tab sis sai li sai tau raws li cov qhov tso zis dej yog ua tsawg - koj yuav tham txog ib tug los. Thiab lub biggest txawv yuav kov txiav txim loj npaum li cas cov kev puas tsuaj ntawm lub siab ntauwd. Nws yog ib qho yooj yim to taub hais tias lub hluav taws xob tam sim no yuav tsum tsis txhob yuav nyob qhov twg los tawm rau hauv Circuit Court. Yog hais tias qhov no tshwm sim, ces qhov chaw muaj ib tug los, los yog, tej zaum, lub tswvyim "unwinding" counter. Realizing no, koj yuav kawm tau ntau raws li koj txuas lub RCD.

Hluav taws xob cov Philosophy

Xav txog tej yam uas muaj kev puas tsuaj rau cov hlau rwb thaiv tsev, thiab cov theem (tam sim no) nyob rau hauv lub Circuit Court ntawm lub tshuab ntxhua khaub ncaws nyob rau hauv lub hlau casing. Thaum koj kov nws tshwm sim hauv lub to tam sim no los ntawm tib neeg lub cev, uas yog tsis tshua muaj txaus ntshai. Yuav kom tiv thaiv no, koj yuav tsum mus cuag lub RCD. Nyob rau hauv cov ntaub ntawv no, tus ntaus ntawv yuav sau qhov txawv ntawm cov khoom thiab ntsaws currents thiab instantly kaw tawm lub zuag qhia tag nrho mov saw.

Siv cov RCD

Installation ntawm tus dais no yog tej yam yooj yim thiab tsis ua teeb meem txawm rau cov novice electrician. Txawm li cas los, koj yuav tsum xub txiav txim siab nyob qhov twg nws yuav muab ntsia tau rau ib tug RCD. Muaj peb qho kev xaiv: ncaj qha rau ntawm lub hwj huam mov kab ntawm ib lub tsheb; rau ib ceg pab pawg neeg ntawm pab kiag li lawm; tag nrho lub tsev. Tus thawj txoj kev yog yus muaj los ntawm siab kev ruaj ntseg, tab sis nws muaj peev xwm coj ib tug ntau ntawm kev tiv thaiv pab kiag li lawm. Ob - nruab nrab, zoo peb kawg tus nqi, tab sis muaj tus nqi qis tshaj rhiab heev rau txia. RCDs yog tam sim no nyob rau hauv ib yam ntawm cov plaub-output terminals: ob rau mov theem thiab pes tsawg thiab ob tso zis. Tom ntej no mus rau lawv muaj yog ib txwm ib tug coj cim, li ntawd, sib tov ib yam dab tsi yuav luag tsis yooj yim sua. Yog li, cov theem yog nqa tawm nyob rau hauv lub suab thiab tib lub npe - tso zis los ntawm lub RCD. Rau xoom qhov teeb meem no yog zoo sib xws. Thov nco ntsoov tias koj yuav tsis cia lub "xoom" mus rau bypass ib RCD (nco ntsoov lub hauv paus ntsiab lus ntawm cov lag luam).

Ib tug yooj yim txoj kev uas yuav

Raws li ib qho piv txwv, xav txog ib tug yooj yim txoj kev. Nws yog nws feem ntau siv, txuas lub RCD nyob rau hauv lub teb chaws. Lub rhiab heev ntawm lub ntaus ntawv rau mounting nyob rau inlet yuav tsum nyob nruab nrab ntawm 100 mus rau 300 MA (rau me me qhov tseem ceeb yog ua tau cuav positives). Piv: kev tiv thaiv ntawm lub tshuab (e.g., tshuab ntxhua khaub ncaws) yog yuav tsum tau RCD nrog tam sim no ntawm 10 MA; thiab rau kev tiv thaiv ntawm tag nrho cov pab pawg neeg - tsis tsawg tshaj li 30 ma. Yog li, tsis hais seb puas los yog tsuas yog siv RCD differential automatic (hloov, nrog rau txoj kev ruaj ntseg ntaus ntawv), cov kev txiav txim siab yog ib txwm cob cog rua tom qab cov thawj induction tshuab. Muaj ob nyob ntawm tej los ntawm tus tes hloov qhov yog nyob rau hauv lub RCD tswv yim thiab nws cov zis - nyob rau hauv. Nrog xws li ib tug txuas ua ke feem ntau yog ua nyob rau hauv lub txee vaj huam sib luag.