UL 62446-1 PDF

1 Scope

This part of IEC 62446 defines the information and documentation required to be handed over to a customer following the installation of a grid connected PV system. It also describes the commissioning tests, inspection criteria and documentation expected to verify the safe installation and correct operation of the system. It can also be used for periodic retesting.

This part of IEC 62446 is written for grid connected PV systems that do not utilize energy storage (e.g. batteries) or hybrid systems.

This part of IEC 62446 is for use by system designers and installers of grid connected solar PV systems as a template to provide effective documentation to a customer. By detailing the expected commissioning tests and inspection criteria, it is also intended to assist in the verification/inspection of a grid connected PV system after installation and for subsequent reinspection, maintenance or modifications.

This part of IEC 62446 defines the different test regimes expected for different solar PV system types to ensure that the test regime applied is appropriate to the scale, type and complexity of the system in question.

NOTE This part of IEC 62446 does not address CPV (concentrating PV) systems, however many of the parts may apply.

This part of IEC 62446 is written for grid connected PV systems that do not utilize energy storage (e.g. batteries) or hybrid systems. However, many of the clauses may apply.

NOTE The scope of this document is limited to residential and commercial-scale systems, as well as the low-voltage equipment up to the medium voltage transformers in utility-scale systems. The scope does not cover medium voltage equipment.

Summary of Topics

First Edition of the UL IEC-Based Standard for Photovoltaic (PV) Systems – Requirements for Testing, Documentation and Maintenance – Part 1: Grid Connected Systems – Documentation, Commissioning Tests and Inspection, ANSI/UL 62446-1, dated October 20, 2022. UL 62446-1 is an adoption of IEC 62446-1 (Edition 1.1, issued August 2018). The IEC standard consists of the first edition (2016-01) and its amendment 1 (2018-08). Please note that the National Difference document incorporates all of the U.S. national differences for UL 62446-1.