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Experts, I have a question: how is the power supply duration for emergency power in chemical processing plants determined? Thank you

2023-02-19View Original

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Experts, I have a question: how is the power supply duration for emergency power in chemical processing plants determined? Thank you. Is there any relevant standard specifying 30 minutes or something like that? Please provide the relevant standards; I would be extremely grateful
Reply #22023-02-20
HG/T 20509-2014 Code for Design of Instrument Power Supply 7.1.3 Power supply duration of backup batteries: not less than 30 min.

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