The Not-So-Shocking Truths About UPS Safety
The parameters of a potential arc flash event—how much force/fire are likely and how long it will last—are functions of how much power is being connected in the unit and how quickly the
The use of an uninterruptible power supply ( UPS) to comply with standby power requirements shall not be permitted ... of the emergency electrical system and connected to the uninterruptible power supply ( UPS ). [99B:4.5.1.11] ... be in accordance with Article 480.
The standard applies to permanently installed emergency and standby power systems including generators, transfer equipment, controls, supervisory equipment, and associated electrical and mechanical auxiliary systems. NFPA 110 uses three parameters to classify Emergency Power Supply Systems:
Another common way of providing a secondary power supply for a fire alarm system is the use of an emergency generator designed, installed, and maintained in accordance with NFPA 110, Standard for Emergency and Standby Power Systems, which provides power to the fire alarm system through an automatic transfer switch.
Texas Electrical Code 2020 > 6 Special Equipment > 645 Information Technology Equipment > 645.11 Uninterruptible Power Supply (UPS) An approved procedure has been established and maintained for removing power and air movement within the room or zone.
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