{"id":10368,"date":"2018-07-10T18:42:29","date_gmt":"2018-07-10T16:42:29","guid":{"rendered":"https:\/\/www.kromschroeder.de\/process-heat\/products\/kromschroeder-system-technology\/gas-systems\/standards\/en-746-22010\/5-2-gaseous-fuels\/5-2-5-burners\/5-2-5-3-start-up-and-ignition\/5-2-5-3-4-safety-time\/"},"modified":"2018-07-27T19:40:35","modified_gmt":"2018-07-27T17:40:35","slug":"5-2-5-3-4-safety-time","status":"publish","type":"page","link":"https:\/\/www.kromschroeder.de\/en\/kromschroeder-system-technology\/gas-systems\/standards\/en-746-22010\/5-2-gaseous-fuels\/5-2-5-burners\/5-2-5-3-start-up-and-ignition\/5-2-5-3-4-safety-time\/","title":{"rendered":"5.2.5.3.4 Safety time"},"content":{"rendered":"

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    5.2.5.3.4.1 General<\/h1>\n

    The safety time and total closing time shall not vary by more than 20 % when the electrical supply voltage is varied between 85 % and 110 % of the nominal value.<\/p>\n<\/div>\n

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    5.2.5.3.4.2 Maximum safety times for natural draught burners<\/h1>\n
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    The safety time and total closing time for natural draught burners shall not exceed the values given in Tables 1 and 2.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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    Maximum safety times for natural draught burners operating in open air<\/caption>\n
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    Maximum safety times for natural draught burners operating in combustion chamber<\/caption>\n
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    5.2.5.3.4.3 Maximum safety times for forced and induced draught burners<\/h1>\n

    The maximum start gas rate and the corresponding safety time for forced and induced draught burners shall not exceed the values given in Table 3.<\/p>\n

    The total closing time shall not exceed 3 s.<\/p>\n

    Burner start-up shall be achieved in accordance with one of the following methods:<\/p>\n