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    The protection measures for dust explosion-proof motor shell

    作者:admin時間:2019-06-29 17:01瀏覽:

      With regard to the explosion-proof form "tD", there are two different schemes in this section, both of which provide a level of energy efficiency protection.

      Enclosure for type A and all other equipment

      The temperature requirements are as follows:

      - confirm the lowest touching temperature of dust layer according to the rule GB12476.8;

      - the highest surface temperature shall be confirmed in the dust-free state according to the rule of 23.4.4.1 in 12476.1;

      - the maximum allowable surface temperature for equipment with a dust layer thickness of no more than 5mm shall be calculated in accordance with the rule of 6.3.3.3.

      Special case type B

      - the temperature requirements are as follows:

      - confirm the lowest touching temperature of dust layer according to the rule GB12476.8;

      - the maximum surface temperature under dust cover is in accordance with iec61241-1:2004 8.2.2.2;

      - the maximum surface temperature allowed for equipment with a dust layer thickness of no more than 12.5mm shall be calculated in accordance with the rules of 6.3.3.3.2.

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    俄罗斯18一19SEX性