IEEE 14-1925

14-1925 is the AIEE Instrument Transformers standard, a technical document focused on transformer types used to adapt current and voltage signals for measurement and protection. It addresses the engineering context of power, energy, and related electrical systems, where accurate instrument transformer performance supports reliable metering, relay operation, and system oversight. For buyers and engineers, this standard matters because it helps define a consistent basis for design, evaluation, and specification.

About 14-1925

The 14-1925 standard provides guidance in the area of instrument transformers, which are commonly used to scale high electrical quantities to levels suitable for instruments and control equipment. In this context, the document is relevant to AIEE technical practice and to the broader requirements of electrical components and systems. As a superseded standard, 14-1925 may still be useful for historical reference, legacy equipment review, or comparison with later technical requirements in transformer design and testing.

Where is 14-1925 used?

This standard is typically associated with power-system environments where instrument transformers support measurement, monitoring, and protective functions. That can include substations, switchgear assemblies, metering panels, and utility or industrial electrical installations. Because the subtitle points to instrument transformers, 14-1925 is most relevant where current transformers or potential transformers are selected, installed, or evaluated for use with meters, relays, and control circuits in energized power networks.

Importance in practice

In practice, 14-1925 helps create a common technical reference for choosing and assessing instrument transformers. That can improve consistency in procurement, reduce interpretation issues in engineering specifications, and support more reliable performance in measurement and protection duties. For legacy systems, the standard may also help teams understand original design expectations and compare equipment behavior during maintenance, replacement, or compliance reviews. Using a defined standard can lower risk in critical electrical applications.

• Instrument transformer context
• Measurement and protection support
• Power and energy system use
• Legacy technical reference
• Superseded standard status