關於防爆管件在美國UL認證跟歐洲IECex認證的材質規定是什麼?

關於防爆管件在歐洲/國際/IECex 認證上 對於鑄鐵材質的相關規定是什麼? 

答:

IEC 60079-1  12.4 章節對於鑄鐵材質的內文如下 : 

 12.4  When cast iron is used, the material shall be not less than the quality 150.        當使用鑄鐵(Cast Iron)時,其材料等級不得低於 150 級

           ( Cast iron quality 150 is defined by ISO 185)   鑄鐵 150 級的定義依據 ISO 185 標準 

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關於美國  UL 1203  對於防爆材質的相關規定是什麼?

答:


PART I – EXPLOSIONPROOF EQUIPMENT  第一部分-防爆設備(Explosionproof Equipment)

CONSTRUCTION

8 Enclosure Material

8.1 The enclosure housing the electrical components, except those portions for viewing or light transmission, shall be made of iron, steel, copper, brass, bronze, or aluminum or aluminum alloys containing a minimum of 80 % aluminum, or shall be made of nonmetallic material which complies with the requirements in Section 33, Non-Metallic Enclosure Materials Tests. A metal such as zinc or zinc alloy, or magnesium or magnesium alloy, shall not be used.


用於容納電氣元件的外殼(觀察窗或透光部分除外),應由下列材料製成:

  • 鐵(Iron)
  • 鋼(Steel)
  • 銅(Copper)
  • 黃銅(Brass)
  • 青銅(Bronze)
  • 鋁(Aluminum)
  • 含鋁量至少 80% 的鋁合金

或者可採用符合第 33 節「非金屬外殼材料試驗(Non-Metallic Enclosure Materials Tests)」要求的非金屬材料。

不得使用下列金屬:

  • 鋅或鋅合金(Zinc / Zinc Alloy)
  • 鎂或鎂合金(Magnesium / Magnesium Alloy)


8.2 Copper and copper alloys shall not be used for the enclosure of a device for use in Class I, Group A locations containing acetylene unless it is coated with tin, nickel, or other coating that has been determined to comply with the requirements or by limiting the maximum copper content of the alloy to 30 %.


對於使用於 Class I、Group A(乙炔 Acetylene)危險場所 的設備外殼,不得使用銅或銅合金。

除非:

  1.   表面鍍有錫(Tin)、鎳(Nickel)或其他經證明符合要求的塗層;或
  2.    將合金中的銅含量限制在最高 30%。


8.3 A part for viewing or light transmission shall be made of glass or similar material.

8.3
供觀察或透光用途的部件,應由玻璃或類似材料製成。



9 Enclosure Thickness  外殼厚度

9.1 Except as noted in 9.3 and 9.4, the minimum thickness of the metal enclosure walls shall be in accordance with Table 9.1.

除 9.3 與 9.4 另有規定外,金屬外殼壁厚不得小於表 9.1 所規定的最小厚度。

9.2 A machined or a threaded joint in the walls of a cast-metal enclosure shall be not less than the minimum thickness specified in Table 9.1 through the overlap.

鑄造金屬外殼(Cast-Metal Enclosure)壁上的機加工接合面或螺紋接合面,其重疊部分(overlap)厚度不得小於表 9.1 所規定的最小厚度。

在UL 規範上使用鑄鐵材質只有要求要符合最小厚度 ...

結論:


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