IEEE 28-1974

IEEE 28-1974 is a superseded standard for surge arresters used in alternating current power circuits. It addresses the technical expectations for protecting electrical equipment from overvoltage events by guiding arrester design, rating, and performance considerations. For power, energy, and industrial applications, this document helps define a consistent basis for evaluating surge protection equipment and understanding how arresters fit into AC system protection practices.

Overview of IEEE 28-1974

IEEE 28-1974 focuses on surge arresters intended for alternating current power circuits, where transient voltages can threaten insulation and equipment integrity. The standard provides a technical framework for describing and assessing arrester characteristics in a power-system context. As a historical IEEE specification, it is useful when reviewing legacy equipment, comparing older procurement documents, or interpreting design and compliance references tied to AC surge protection requirements.

Typical use cases

This standard is most relevant in settings where surge arresters are selected or reviewed for AC power networks, substations, and connected industrial equipment. It may support specification work for protection devices installed to limit transient overvoltages on lines, transformers, switchgear, and related components. Engineers, maintenance teams, and procurement staff may consult IEEE 28-1974 when working with legacy installations or when aligning documentation for power-system protection assets.

Why it matters

Clear arrester requirements help reduce uncertainty in design and procurement, especially for equipment exposed to switching or lightning-related surges. IEEE 28-1974 supports more consistent evaluation of performance expectations, which can improve protection strategy, equipment coordination, and reliability planning. For organizations maintaining older AC power infrastructure, the standard can also help preserve documentation continuity and support comparisons between legacy and replacement surge protection solutions.

• Surge arresters for AC power circuits
• Legacy IEEE technical reference
• Protection against transient overvoltages
• Relevant to power and industrial equipment
• Superseded standard status