IEEE C37.23-1969

IEEE C37.23-1969 is an ANSI/IEEE guide for calculating losses in isolated phase bus, helping engineers evaluate electrical efficiency and thermal behavior in enclosed high-current power conductors. It is relevant to power, energy, and industrial systems where isolated phase bus is used to move large currents with controlled impedance and reduced exposure. By providing a common basis for loss calculation, this standard supports more consistent design review, performance assessment, and equipment comparison.

IEEE C37.23-1969 overview

This standard addresses how losses in isolated phase bus may be calculated and considered in engineering practice. In that context, IEEE C37.23-1969 is useful when reviewing conductor losses, enclosure-related effects, and the impact of operating conditions on bus performance. The document is tied to an electrical power systems environment, where predictable losses matter for thermal design, system efficiency, and equipment rating. Its guidance helps create a more uniform basis for analysis across projects and installations.

Typical use cases

IEEE C37.23-1969 is typically consulted during the design or evaluation of isolated phase bus for generators, transformers, and large power distribution connections. It may also support thermal studies, loss estimates, and procurement specifications for enclosed bus systems in utility and industrial facilities. Engineers and specifiers can use it when comparing proposed bus arrangements, checking operating limits, or documenting expected performance under load. The standard is especially useful where accurate loss calculation affects cooling, layout, and system reliability.

Why this standard matters

Accurate loss calculation is important because isolated phase bus carries substantial current and can influence both efficiency and temperature rise. IEEE C37.23-1969 helps bring consistency to design decisions, technical reviews, and acceptance criteria for these systems. Using a recognized guide can reduce uncertainty in engineering calculations, improve comparison between alternatives, and support more reliable procurement and compliance workflows. For projects where bus performance affects overall plant operation, that consistency can lower risk and improve long-term maintainability.

• Isolated phase bus loss calculation
• Thermal and efficiency assessment
• Power system design reference
• Load-related performance review
• Engineering and procurement support