IEEE PC37.62/D6.1, Sept 2018 is an IEEE draft standard focused on pad mounted, dry vault, submersible fault, and overhead fault interrupters for alternating current systems up to 38 kV. It addresses equipment used in medium-voltage power distribution, where dependable interruption, insulation coordination, and installation suitability are important. For utilities, engineers, and procurement teams, this technical document helps define the design and performance expectations for fault interrupter equipment in field applications.

IEEE PC37.62/D6.1, Sept 2018 overview

This draft standard provides a technical basis for fault interrupters intended for AC systems at voltages up to 38 kV. IEEE PC37.62/D6.1, Sept 2018 is relevant to equipment that may be installed in pad mounted, dry vault, submersible, or overhead configurations, each of which presents different environmental and operational demands. The standard commonly supports consistent evaluation of construction, rating, insulation, and functional performance so that devices can be specified and compared with greater confidence.

Typical use cases

This standard is typically used when selecting or reviewing fault interrupters for distribution circuits in utility and industrial power systems. It is especially relevant for underground networks, vault installations, pad mounted enclosures, and overhead feeder applications where interruption capability must align with the system voltage and installation method. IEEE PC37.62/D6.1, Sept 2018 can also support engineering teams working on equipment coordination, replacement planning, and specification review for medium-voltage switching and protection hardware.

Why this standard matters

Fault interrupters must operate reliably under demanding electrical and environmental conditions, so clear requirements are important for safety and system continuity. IEEE PC37.62/D6.1, Sept 2018 helps reduce ambiguity in design and procurement by defining a common technical reference for performance and application. That can improve consistency across projects, support testing and acceptance decisions, and lower the risk of mismatched equipment in power distribution systems. It is also useful when comparing products intended for different installation environments.

• Pad mounted, dry vault, submersible, and overhead applications
• AC systems up to 38 kV
• Fault interruption equipment for distribution networks
• Design, rating, and performance reference
• Specification and compliance support