IEEE 117-1974

117-1974 is a technical standard for wound AC electric machinery, providing a focused reference for components, design expectations, and performance considerations in alternating-current machines. In the context of Power, Energy and Industry Applications, it is relevant to equipment where winding construction and electrical characteristics affect reliability, efficiency, and serviceability. This standard helps define a common basis for evaluating wound AC machinery in engineering, procurement, and compliance work.

Overview of 117-1974

This standard addresses wound AC electric machinery in a way that is useful for technical review and product specification. It generally supports consistent interpretation of machine construction, winding-related requirements, and related electrical behavior. For buyers and engineers working with rotating equipment, 117-1974 can serve as a reference point when comparing designs or checking whether a machine aligns with established expectations for components, circuits, devices, and systems. Its inactive status makes it especially relevant for legacy documentation and historical reference.

Typical use cases

117-1974 is commonly used when specifying or reviewing wound AC machines for industrial power systems, equipment drives, and electrical assemblies that depend on defined winding performance. It may also support maintenance teams evaluating older machinery, manufacturers documenting legacy designs, and procurement groups comparing technical requirements for replacement units. In practice, the standard can be useful where winding construction, insulation-related details, and machine behavior must be understood within a controlled engineering workflow.

Why it matters

Even as an inactive standard, 117-1974 can still matter for consistency, traceability, and informed technical decision-making. It helps organizations interpret older drawings, test records, and procurement references without relying on vague assumptions. For wound AC electric machinery, having a stable specification reference can reduce mismatch risk, support clearer acceptance criteria, and improve communication between design, maintenance, and sourcing teams. That can be especially important when managing legacy equipment or replacement parts.

• Wound AC electric machinery
• Legacy engineering reference
• Design and inspection support
• Industrial power equipment