UPS power supply for toxic, hazardous, and flammable gas alarm detectors
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In the petrochemical industry, is it necessary to equip gas alarm detectors with a UPS? If necessary, what is the minimum duration of power supply that must be guaranteed, and where can I find the relevant laws and regulations? Thank you~!
Under normal circumstances, the power supply for instruments and systems constitutes a special type of load; specifically, it consists of one source of mains power (two electrical inputs in total) and one UPS supply. A higher configuration consists of two UPS units, plus one mains power supply. The time is 30 minutes. The above is specified in the instrument power supply design specifications or system design specifications
If it goes into the controller, the controller’s power is supplied via a circuit from the cabinet UPS； If a card insertion module is used, the cabinet itself has two power supply circuits
GB50493-2009 3.0.11
It is specified in GB50493-2009 3.0.11; as for the power supply duration, this should be determined in accordance with the enterprise’s relevant management requirements for uninterruptible power supplies. Select the battery capacity as required