IEEE Std 1584-2018 (''Guide for Performing Arc-Flash Hazard Calculations'') is a standard of the
Institute of Electrical and Electronics Engineers that provides a method of calculating the incident energy of
arc flash event.
Purpose
IEEE 1584-2018 is an update to IEEE 1584-2002 and was developed to help protect people from arc-flash hazard dangers. The predicted arc current and incident energy are used in selecting appropriate overcurrent protective devices and
personal protective equipment
Personal protective equipment (PPE) is protective clothing, helmets, goggles, or other garments or equipment designed to protect the wearer's body from injury or infection. The hazards addressed by protective equipment include physical, e ...
(generally abbreviated as PPE), as well as defining safe working distance. Since the magnitude of the arc current is inherently linked with the degree of arc hazard, the arc is examined as a circuit parameter. Furthermore, since estimations are often useful, simple equations for predicting ballpark arc current, arc power, and incident energy values and probable ranges are presented in this work.
Procedure
Arc Flash Hazard calculations are currently implemented in most of the industry plants due to
OSHA
OSHA or Osha may refer to:
Work
* Occupational Safety and Health Administration, a federal agency of the United States that regulates workplace safety and health
* Occupational Safety and Health Act (United States) of 1970, a federal law in the Un ...
regulations. The IEEE 1584
empirically
In philosophy, empiricism is an epistemological theory that holds that knowledge or justification comes only or primarily from sensory experience. It is one of several views within epistemology, along with rationalism and skepticism. Empir ...
derived model accurately accounts for a wide variety of setup parameters including:
*
Voltages
Voltage, also known as electric pressure, electric tension, or (electric) potential difference, is the difference in electric potential between two points. In a static electric field, it corresponds to the work needed per unit of charge to mo ...
in the range of 208–15,000 V, three-phase.
*
Frequencies of 50 Hz to 60 Hz.
* Bolted fault current in the range of 700–106,000 A.
* Grounded or ungrounded.
* Equipment enclosures of commonly available sizes with various conductor configurations, or open air.
* Gaps between
conductors.
* Faults involving three phases.
For cases where voltage is over 15 kV or gap is outside the range of the model, the theoretically derived Lee method can be applied.
IEEE 1584.1 is a guide published in July 2022 for the specification of requirements for an Arc Flash Hazard Calculation study in accordance with the IEEE 1584 Standard.
References
Electrical safety
IEEE standards
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