IEC 62933-2-1-2017 cor1-2019 PDF

Full title and description

IEC 62933-2-1:2017/COR1:2019 — Corrigendum 1 to "Electrical energy storage (EES) systems — Part 2-1: Unit parameters and testing methods — General specification". This corrigendum issues formal corrections and clarifications to the first edition (2017) of the Part 2-1 general specification for unit parameters and standardized test methods for electrical energy storage systems (EES).

Abstract

This corrigendum makes editorial and technical corrections to IEC 62933-2-1:2017 to ensure the unit parameter definitions, test method descriptions and reporting requirements are consistent and unambiguous. The underlying standard defines how to describe, measure and report unit-level performance of EES systems (for example nominal and actual energy capacity, input/output power ratings, round-trip efficiency, response characteristics and life-related parameters). The corrigendum itself is short (published as a single corrigendum document) and should be applied together with the 2017 edition.

General information

• Status: Published (corrigendum to IEC 62933-2-1:2017).
• Publication date: 8 January 2019 (IEC publication date for Corrigendum 1).
• Publisher: International Electrotechnical Commission (IEC), TC 120.
• ICS / categories: 13.020.30 (Electrical energy systems).
• Edition / version: Edition 1.0 + Corrigendum 1 (IEC 62933-2-1:2017/COR1:2019).
• Number of pages: Corrigendum published as a short 1-page corrigendum document (applies to the 2017 edition).

Scope

Applies to unit-level parameters and test methods for electrical energy storage systems. The document standardizes definitions, measurement and verification methods for unit performance (energy capacity, power ratings, efficiencies, response times, expected service life and other key metrics) and is intended to be technology‑neutral — it addresses the EES system as a unit rather than specific storage device technologies (cells, flywheels, thermal stores, etc.). The corrigendum corrects and clarifies items in the original 2017 text so that the specification can be applied consistently.

Key topics and requirements

• Standardized definitions of unit parameters: nominal vs. actual energy capacity, input/output power rating, usable energy, state-of-charge definitions and reporting conventions.
• Test methods for measuring performance: energy throughput tests, round‑trip efficiency measurement procedures, power and ramp-rate tests, response and step response characterizations.
• Classification of typical EES applications and duration classes (example Class A short‑duration, Class B long‑duration, Class C backup).
• Reporting formats and required metadata to ensure repeatability and comparability of test results (operating conditions, test setup, ambient conditions, preconditioning).
• Editorial/technical corrections to the 2017 edition (clarifications that affect interpretation or test procedure steps).

Typical use and users

Used by EES system manufacturers, independent test laboratories, certification bodies, project developers, grid operators, consultants and regulators when specifying, testing, verifying and procuring EES units. It is referenced in technical specifications, procurement documents and conformity assessment activities where consistent unit-level performance metrics and test procedures are required.

Related standards

This corrigendum is part of the IEC 62933 series on Electrical Energy Storage systems. Closely related documents include IEC 62933-2-1:2017 (the base document), regional/adopted versions such as EN IEC 62933-2-1:2018 (identical adoption), and other parts of the series covering vocabulary (Part 1), application/performance tests (Part 2-2), safety (Parts 5-1 and 5-2), and multiple technical reports and technical specifications addressing specific technologies and use cases. Users should consult the full IEC 62933 series for lifecycle, safety and application-specific requirements.

Keywords

electrical energy storage, EES, unit parameters, test methods, round‑trip efficiency, capacity, power rating, IEC 62933, corrigendum, performance testing.

FAQ

Q: What is this standard?

A: It is Corrigendum 1 to IEC 62933-2-1:2017 — a formal correction document that updates and clarifies the Part 2-1 general specification for unit parameters and testing methods for electrical energy storage systems. Apply it together with the 2017 edition.

Q: What does it cover?

A: It covers editorial and technical corrections to the definitions, test procedures and reporting requirements used to measure and report unit-level EES performance (energy, power, efficiency, response characteristics, life-related parameters). The base Part 2-1 standard itself addresses unit parameters and test methods; the corrigendum refines that content.

Q: Who typically uses it?

A: Manufacturers, test laboratories, certification bodies, utilities, project developers, consultants and regulators who need consistent, repeatable unit-level performance definitions and test methods for EES procurement, verification and compliance activities.

Q: Is it current or superseded?

A: The corrigendum (published 8 January 2019) amends the 2017 edition; it is a correction (not a replacement). The corrected 2017 edition with Corrigendum 1 remains the normative document until officially superseded by a later edition. The IEC webstore lists the corrigendum as published and indicates stability planning for the parent document (reference stability information on IEC listings).

Q: Is it part of a series?

A: Yes — it belongs to the IEC 62933 series on Electrical Energy Storage (EES) systems (Part 1: vocabulary; Part 2-1: unit parameters and test methods; Part 2-2: application and performance testing; Parts 5-x: safety; and other technical reports and specifications). The corrigendum specifically amends Part 2-1 (2017).

Q: What are the key keywords?

A: Electrical energy storage, EES, unit parameters, testing methods, corrigendum, IEC 62933-2-1, round-trip efficiency, capacity, power rating.