IEEE C57.12.25-1990
Voltage Connectors: High Voltage (34 500 GrdY/19 920 Volts and Below) and Low-Voltage (240/120 Volts; 167 kVA and Smaller)
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About This Item
C57.12.25-1990 addresses voltage connectors used in power and energy applications, with coverage for high-voltage service up to 34 500 GrdY/19 920 volts and low-voltage service at 240/120 volts for 167 kVA and smaller equipment. This technical standard is relevant where connector design, rating, and interchangeability affect transformer and distribution equipment performance. For engineers, procurement teams, and manufacturers, C57.12.25-1990 helps define a common basis for compatible and dependable connector selection.
Overview of C57.12.25-1990
This specification focuses on voltage connectors associated with electrical power apparatus, particularly in transformer and related distribution equipment. It provides a defined framework for connectors used on high-voltage and low-voltage applications, helping ensure that the parts selected are suited to the intended electrical service. C57.12.25-1990 is useful as a reference point when evaluating connector construction, ratings, and application fit within power system components.
Typical use cases
This standard is commonly used when specifying connectors for utility transformers, pad-mounted equipment, and other power components that require dependable high-voltage or low-voltage terminations. It may also support procurement and quality review for equipment rated at 167 kVA and smaller, where connector compatibility is important. In practice, C57.12.25-1990 can help align design and purchasing decisions for service connections, field replacement parts, and standardized equipment builds.
Why it matters
For power equipment, connector details can influence safety, reliability, and maintenance consistency. C57.12.25-1990 helps reduce ambiguity by setting a clearer technical reference for voltage connector applications, which can improve compliance checks and limit mismatches during assembly or replacement. Using a defined standard also supports more consistent testing, specification review, and product comparison across different manufacturers and projects.
- High-voltage connector applications
- Low-voltage service up to 240/120 volts
- Equipment rated 167 kVA and smaller
- Power apparatus and distribution components
- Design and procurement reference
- Publication Date: 2003
- Standard Status: Inactive
- Publisher: IEEE
- Subject: Power, Energy and Industry Applications; Components, Circuits, Devices and Systems
- Official IEEE: Doi link
- This Version: C57.12.25 (2003)
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