IEEE 400.2-2004

IEEE 400.2-2004 is a field-testing standard for shielded power cable systems using very low frequency (VLF) methods. It provides a structured approach for evaluating cable insulation and related components in power, energy, and industrial applications. By focusing on practical test procedures for installed or assembled cable systems, it helps users obtain more consistent results and make better decisions about serviceability, maintenance, and electrical condition.

About IEEE 400.2-2004

This technical document addresses field testing of shielded power cable systems with VLF equipment, a method commonly used when lower-frequency test signals are preferred for cable insulation assessment. IEEE 400.2-2004 helps define how such testing is carried out so results are more repeatable and easier to interpret. It is relevant to engineering teams responsible for cable verification, diagnostic testing, and maintenance planning, especially where shielded medium-voltage cable systems require controlled on-site evaluation.

Where is IEEE 400.2-2004 used?

IEEE 400.2-2004 is typically used in field environments where shielded power cables are installed and need non-destructive or controlled testing before return to service, after maintenance, or during condition assessment programs. It is relevant to utilities, industrial facilities, and contractors working with cable test sets, VLF instrumentation, and related diagnostic workflows. The standard supports testing of cable systems in power distribution and energy infrastructure where insulation condition and system reliability are important.

Importance in practice

In practice, IEEE 400.2-2004 matters because field testing needs a clear and consistent method to reduce uncertainty and improve decision-making. Using a recognized approach helps support compliance efforts, procurement specifications, and maintenance records while lowering the risk of inappropriate test application. For shielded power cable systems, a defined VLF procedure can improve comparability between tests, support safer inspection practices, and help engineers identify cables that may need repair, further evaluation, or replacement.

• Shielded power cable systems
• Very low frequency field testing
• Insulation condition assessment
• Maintenance and acceptance workflows
• Power and energy applications