IEEE C37.20.6-2015

IEEE C37.20.6-2015 is a technical standard for 4.76 kV to 38 kV rated ground and test devices used in enclosures. It addresses the design and application of equipment that supports grounding and testing activities in medium-voltage power systems, helping engineers define suitable ratings and performance expectations. For utilities, industrial facilities, and switchgear-related projects, the document is important because it supports safer maintenance practices and more consistent equipment selection.

Overview of IEEE C37.20.6-2015

This standard provides guidance for ground and test devices intended for use inside enclosures associated with medium-voltage power, energy, and industrial equipment. IEEE C37.20.6-2015 helps frame the technical requirements for devices rated from 4.76 kV through 38 kV, where grounding and testing functions must be handled with care. It is relevant to engineers, specifiers, and procurement teams that need a clear reference for evaluating device suitability, electrical ratings, and expected service conditions.

Typical use cases

IEEE C37.20.6-2015 is commonly used when specifying ground and test devices for metal-enclosed switchgear, motor control centers, and other medium-voltage enclosures that require controlled access for testing or grounding. It may support commissioning, maintenance isolation, and verification work in utility substations, industrial plants, and large commercial power distribution systems. The standard is especially useful where equipment must be selected to match enclosure design, voltage class, and operating procedures.

Why it matters

Using IEEE C37.20.6-2015 helps promote consistency in how ground and test devices are designed, rated, and evaluated for enclosed medium-voltage applications. That matters in practice because incorrect device selection can increase operational risk during maintenance, testing, or fault-related work. A clear standard can also improve procurement comparisons, support compliance checks, and reduce ambiguity between designers, manufacturers, and end users. For critical electrical infrastructure, that consistency is often essential.

• 4.76 kV to 38 kV rated devices
• Grounding and testing functions in enclosures
• Medium-voltage power and industrial applications
• Selection support for switchgear-related equipment
• Reference for design and compliance review