IEEE 1584

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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.

Contents

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 (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. [1]

Procedure

Arc Flash Hazard calculations are currently implemented in most of the industry plants due to OSHA regulations. [2] The IEEE 1584 empirically derived model accurately accounts for a wide variety of setup parameters including:

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. [3]

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<span class="mw-page-title-main">Circuit breaker</span> Automatic circuit protection device

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In an electric power system, a fault or fault current is any abnormal electric current. For example, a short circuit is a fault in which a live wire touches a neutral or ground wire. An open-circuit fault occurs if a circuit is interrupted by a failure of a current-carrying wire or a blown fuse or circuit breaker. In three-phase systems, a fault may involve one or more phases and ground, or may occur only between phases. In a "ground fault" or "earth fault", current flows into the earth. The prospective short-circuit current of a predictable fault can be calculated for most situations. In power systems, protective devices can detect fault conditions and operate circuit breakers and other devices to limit the loss of service due to a failure.

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References

  1. "IEEE 1584-2018 - IEEE Guide for Performing Arc-Flash Hazard Calculations". Archived from the original on March 21, 2019.
  2. http://ecmweb.com/mag/electric_calculating_arc_flash here
  3. "IEEE 1584.1-2022". IEEE Standards Sale. IEEE Petroleum and Chemical Industry Committee. Retrieved 16 November 2022.