Fashewar Shenhai-Hujja
The “Ex” a farkon cikakkiyar alamar fashewar alamar fashewa yana nuna cewa yana cikin takamaiman nau'in kayan aikin fashewa, amma duk da haka bai yi cikakken bayani game da abubuwan da ke tabbatar da fashewarsa ba.
Alamar Fashe-Tabbatar Kayan Kayan Wutar Lantarki
| Nau'in | Nau'in Hujjar fashewa | Ƙarfafa Nau'in Tsaro | Nau'in Tsaro na Cikin Gida | Nau'in Matsi mai Kyau | Nau'in Cika Mai | Yashi Cika Mold | Spark Free Type | Exm | Nau'in iska |
|---|---|---|---|---|---|---|---|---|---|
| Alama | d | e | i da ib | p | o | q | n | m | h |
Waɗannan alamomin suna nuna nau'in tabbatar da fashewa ta hanya, matakin, da kuma category. Misali:
Ex d ii yana nufin Class II, Matakin B, Rukuni T3 na'urar lantarki mai hana wuta;
Ex ia II AT5 yana nuna Class II, Darasi A, Rukuni T5 ia matakin intrinsically amintaccen na'urar lantarki;
Ex ep II BT4 yana ƙaddamar da ƙarin nau'in aminci nau'in lantarki tare da abubuwan da aka matsa don kariya ta fashewa;
Exd II (NH3) ko Ex d II ammonia ya gano a hana wuta na'urar lantarki da aka ƙera don mahallin gas na helium;
Ex d I yana wakiltar ƙayyadaddun na'urar lantarki mai hana wuta ta Class I;
Ex d/II BT4 yana nuna na'urar lantarki mai hana wuta da ke aiki ga Class I da Class II, Matakin B, Rukuni T4.
Ana yiwa na'urorin lantarki masu hana fashewar kura da DIP (Hujjar Ƙarfafa ƙura) alama. Misalai sun haɗa da:
DIP A20 da DIP A21, don Nau'in A na'urori masu hana fashewar ƙura a Yankuna 20 kuma 21, bi da bi;
DIP A22 don Nau'in A na'ura mai hana fashewar ƙura a Yanki 22;
DIP B22 don Nau'in B mai hana fashewar ƙura a Yanki 22, da sauransu.