Standards Development

Scope

This part of IEC 62586 describes a procedure used for maintenance tests of individual power quality instruments. Users of these instruments need to ensure the conformity of the individual power quality instrument with the requirements of IEC 62586 1. This is achieved by periodical maintenance tests as defined in this document.

Reference instruments used for these tests must be calibrated periodically to maintain traceability as required by ISO/IEC 17025. This document describes a calibration programme matching the needs of users carrying out maintenance tests.

The procedure for maintenance tests described here is a suggestion intended to be sufficient in most practical cases for the common principles of implementation of power quality instruments. This document is informative and does not limit the freedom of users with advanced knowledge of their instruments or with special needs to implement specific programmes in any way. 

This document is applicable to power quality instruments complying with IEC 62586 1 and whose compliance with IEC 61000 4 30 has been certified based on a type test according to IEC 62586 2.

Adjustment, type test and routine test are out of scope of this document.

Purpose

A type test as defined in IEC 62586 2 shows the compliance with the requirements of IEC 61000 4 30 based on a small sample of instruments that are deemed representative of the type. Such a type test demonstrates that a manufacturer can build instruments that comply with the requirements.

Maintenance tests are required periodically to verify that an instrument complied with the requirements since the previous maintenance test and that it is likely to comply with the requirements until the next maintenance test.