Conformance tests and requirements for the integrity of above-grade pad-mounted enclosures that contain apparatus energized in excess of 600 V and that may be exposed to the public, including but not limited to the following types of equipment enclosures--pad-mounted capacitors or inductors, pad-mounted distribution transformers, pad-mounted junction enclosures, pad-mounted metering equipment, and pad-mounted switch gear--are covered.

This standard covers conformance tests and requirements for the integrity of above grade pad mounted enclosures containing apparatus energized in excess of 600 volt that may be exposed to the public including, but not limited to, the following types of equipment enclosures: a. Pad-mounted distribution transformers; b. Pad-mounted capacitors or inductors; c. Pad-mounted junction enclosures; d. Pad mounted metering equipment; e. Pad mounted switchgear This standard does not cover installations that are under the exclusive control of electric utilities and are located in such a manner that access to the equipment is controlled exclusively by the utility.

The purpose of this standard is to describe the requirements for a comprehensive integrity system for pad-mounted enclosures providing long field life with minimum maintenance and features required to prevent access to live parts by unauthorized personnel. This standard was originally published by ANSI in 1988 (Revised and republished in 1999) with NEMA as the secretariat. The copyright of this document is now being shared between IEEE and NEMA with IEEE responsible for the maintenance of this standard. This PAR is being submitted for approval so that the C57.12.28 standard can be converted to the IEEE format for publication and future development. The other objective is to review all aspects of this standard and evaluate the corrosion paint tests to better reflect current technology.