IEEE PC37.20.6/D4, Sept 2014 is an IEEE approved draft standard for 4.76 kV to 38 kV rated ground and test devices used in enclosures. It addresses the design and application of equipment intended to provide grounding and testing functions within medium-voltage assemblies, helping define a common technical basis for safe operation, consistent construction, and practical use in power and industrial systems.

Overview of IEEE PC37.20.6/D4, Sept 2014

This technical document focuses on ground and test devices associated with enclosed medium-voltage equipment in the 4.76 kV to 38 kV range. IEEE PC37.20.6/D4, Sept 2014 is relevant where engineered enclosures require controlled methods for grounding conductors and supporting test procedures during installation, maintenance, or inspection. By setting expectations around ratings and application context, the standard helps align equipment design with dependable field use and system safety.

Typical use cases

This standard is commonly relevant for medium-voltage switchgear and related enclosures used in power distribution, industrial facilities, and utility installations. IEEE PC37.20.6/D4, Sept 2014 may be used when specifying ground and test devices for equipment that must be safely de-energized, grounded, or prepared for verification work. It is also useful in engineering, procurement, and maintenance workflows where device compatibility and enclosure-level application need to be clearly understood.

Why it matters

Grounding and testing devices play an important role in reducing operational risk, especially in higher-voltage enclosed systems. IEEE PC37.20.6/D4, Sept 2014 supports clearer design control by helping manufacturers, specifiers, and maintenance teams work from the same technical reference. That can improve consistency in ratings, installation expectations, and compliance checks while also supporting safer testing and servicing practices across power and industry applications.

• 4.76 kV to 38 kV rating range
• Ground and test devices for enclosures
• Medium-voltage power and industrial applications
• Design, application, and safety context