Zipangizo zodzitchinjiriza momwe mungasankhire

Monga aliyense amadziwira, zida zodzitetezera kapena zida zoteteza (SPD) zimateteza zida zamagetsi pamagetsi omwe amabwera chifukwa cha mphezi. Izi zati, sizovuta nthawi zonse kudziwa zomwe mungasankhe.

Kusankha womanga woyenera womenyera komanso otetezera oyenda kumatanthauza kulingalira magawo osiyanasiyana okhudzana ndi mitundu yazida zotetezera, kukonzekera kwa oyendetsa dera, komanso kuwunika koopsa.

Tiyeni tiyesere kuwona zinthu momveka bwino…

Tumizani fomuyo, kuti mumve zambiri za chitetezo (Circuit Breaker kapena Fuse) chokhudzana ndi Surge Protective Device.

Choyambirira, miyezo yapano imafotokoza magulu atatu azida zotetezera zamagetsi amagetsi otsika:

Ndi zida ziti zotetezera zomwe ziyenera kusankhidwa ndipo ziyenera kuikidwa kuti?

Kuteteza mphezi kuyenera kuyandikira kuchokera pamalingaliro athunthu. Kutengera momwe ntchitoyo imagwiritsidwira ntchito (malo akuluakulu ogulitsa mafakitale, malo opangira ma data, zipatala, ndi zina zambiri), njira yoyeserera zoopsa iyenera kugwiritsidwa ntchito kuwongolera posankha chitetezo chokwanira (chitetezo cha mphezi, zida zoteteza) Malamulo adziko lonse, atha kupangitsa kuti kukakamizidwa kugwiritsa ntchito muyezo wa EN 62305-2 (Kuwunika Zowopsa).

Nthawi zina (nyumba, maofesi, nyumba zosaganizira zoopsa zamakampani), ndikosavuta kutsatira mfundo zotsatirazi:

Nthawi zonse, chida choteteza ku Type 2 chidzaikidwa mu switchboard yamagetsi yomwe ikubwera. Kenako, mtunda wapakati pazida zotetezera ndi zida zomwe ziyenera kutetezedwa ziyenera kuyesedwa. Mtunda uwu ukadutsa mita 30, chida chowonjezera choteteza (Mtundu 2 kapena Mtundu 3) chiyenera kukhazikitsidwa pafupi ndi zida.

Ndi kukula kwa zida zotetezera?

Kenako, kuyeza kwa zida zodzitetezera za Type 2 kumadalira makamaka malo owonekera (ocheperako, apakatikati, okwera): pali kutulutsa kosiyanasiyana kwamitundu iliyonse (I_Max = 20, 40, 60 kA (8 / 20μs)).

Kwa zida zodzitchinjiriza za Type 1, chofunikira chofunikira ndikutulutsa mphamvu kwa I_Ndondocha = 12.5 kA (10 / 350μs). Makhalidwe apamwamba angafunike pakuwunika zowopsa pakafunsidwa izi.

Kodi mungasankhe bwanji zida zodzitetezera zogwirizana ndi zida zotetezera?

Pomaliza, chida chodzitchinjiriza chokhudzana ndi chida choteteza (chosemphana ndi fiyuzi) chimasankhidwa malinga ndi makono azizunguliro zaposachedwa pamalo opangira. Mwanjira ina, chosinthira magetsi, chida chodzitchinjiriza ndi I_SC <6 kA idzasankhidwa.

Kugwiritsa ntchito maofesi, I_SC nthawi zambiri <20 kA.

Opanga ayenera kupereka tebulo yolumikizirana pakati pazida zoteteza ndi chida chogwirizira. Zowonjezera zowonjezera zida zophatikizira kale zimaphatikizira chida chotetezeracho m'malo omwewo.