PC37.122.2/D9, Aug 2022 is a technical standard focused on insulated substations rated from 1 kV to 52 kV, providing guidance for power and energy applications where enclosed or insulated equipment must operate reliably at medium-voltage levels. It is relevant to the planning, design, and evaluation of substation installations where insulation performance, spacing, and safety are critical. For engineers, specifiers, and purchasers, PC37.122.2/D9, Aug 2022 helps define a clearer basis for consistent technical decisions.

About PC37.122.2/D9, Aug 2022

This document addresses insulated substations within a defined voltage range, making it useful for projects that require controlled electrical clearances and dependable insulation behavior. As a standard in the power, energy, and industry applications space, PC37.122.2/D9, Aug 2022 is generally used to support uniform requirements and engineering expectations for substation equipment and related assemblies. It may assist with technical alignment between design intent, procurement needs, and compliance review for medium-voltage installations.

Where is PC37.122.2/D9, Aug 2022 used?

PC37.122.2/D9, Aug 2022 is typically used in insulated substation projects serving utility, industrial, and infrastructure electrical systems operating from 1 kV to 52 kV. It is especially relevant where compact switchgear arrangements, enclosed substation layouts, or insulated components are selected to support reliable power distribution. The standard may also be consulted during equipment specification, project engineering, and acceptance activities for facilities that need controlled insulation performance in medium-voltage service.

Importance in practice

In practice, PC37.122.2/D9, Aug 2022 helps reduce ambiguity in the design and selection of insulated substations by setting a common technical reference. That supports safer installations, more consistent procurement, and better coordination between engineering teams and suppliers. For projects in power and industry applications, using a clearly defined standard can improve review efficiency and lower the risk of mismatched ratings, insulation issues, or performance shortfalls during testing and operation.

• Insulated substations rated 1 kV to 52 kV
• Medium-voltage insulation requirements
• Power and industry application context
• Design, procurement, and review reference
• Inactive standard status