ANSI/NETA ATS–2025 NEW RELEASE AVAILABLE IN THE NETA BOOKSTORE
The ANSI/NETA ATS-2025, Standard for Acceptance Testing Specifications for Electrical Power Equipment and Systems, received formal approval from the American National Standards Institute (ANSI) on February 20, 2025.
This standard defines the field tests and inspections recommended to evaluate the suitability of electrical power equipment and systems prior to their initial energization. These specifications are designed to confirm that equipment is properly installed in accordance with design requirements, is operational, and performs within applicable industry standards and manufacturers’ tolerances.
The 2025 edition introduces significant new content, including:
- Section 7.28: Battery Energy Storage Systems (BESS)
- Section 7.29: Solar Photovoltaic (PV) Systems
- Table 100.6: Medium-Voltage Cables Acceptance Test Values (Tables 100.6.1 – 100.6.6)
- Appendix B: Guidance for Circuit Reliability Considerations for Medium- and High-Voltage Cable Testing Methods (Pictured below).
A noteable revision in ANSI/NETA ATS-2025 is found in Section 7.4.D.2.a-b., Metal-Enclosed Busways. This update introduces separate formulas for low-voltage and medium-voltage systems and replaces the previous nominal 1,000-foot run length with the actual busway length in feet, enhancing the applicability of testing procedures.
Example: A 340-foot low-voltage busduct was tested for insulation resistance, and the result was 5.4 megohms. The minimum value for this length of busduct would be calculated as follows:
Formula: Minimum Megohm Value = 100 / [busway length in feet]
Minimum Megohm value / 340 = 100 / 340 = 0.294 Megohms
Conclusion: Therefore, this 340 busduct would be acceptable.
The ANSI/NETA ATS-2025 is available for purchase through the NETA Bookstore, offered in bound print, PDF download, and a Redline PDF (with all changes highlighted) download.
ANSI/NETA ETT–2022 REVISION UNDERWAY
The revision of the ANSI/NETA ETT-2022, Standard for Certification of Electrical Testing Technicians, is currently underway. The initial ballot closed July 13, 2025, followed by the end of the public comment period on July 28, 2025. The updated edition is scheduled for release at PowerTest 2026 and will replace the 2022 edition.
Among the key updates is a revised Detailed Content Outline (DCO), which was published in 2023. The BSR-8 for the recirculation ballot is expected to be released on September 12, 2025, coinciding with the public comment period.
The ANSI/NETA ETT standard defines the minimum qualifications for electrical testing technicians, including requirements for certification, training, and experience. It also outlines the criteria for documenting these qualifications and specifies the standards for an independent and impartial certifying body.
ANSI/NETA MTS–2023 REVISION BEGINS SUMMER 2025
The next revision cycle for the ANSI/NETA MTS–2023, Standard for Maintenance Testing Specifications for Electrical Power Equipment and Systems, will begin in Summer 2025. To support this process, the NETA Standards Review Council will convene a series of Working Groups composed of subject matter experts from across the industry. These Working Groups are to pilot a new approach to early-stage comment review. This beta initiative will also serve to refine procedures in preparation for the upcoming revisions of other ANSI/NETA standards.Details regarding the application process, eligibility criteria, and participation guidelines for future Working Groups will be published on the NETA Standards webpage once available.
The ANSI/NETA MTS–2023 establishes specifications for field testing and inspections to evaluate the continued serviceability and reliability of electrical power equipment and systems. These specifications help ensure that tested equipment operates within applicable industry standards and manufacturers’ tolerances and remains suitable for continued operation.
Key updates in the 2023 edition included a comprehensive overhaul of the Cables section and the introduction of a new section addressing Electric Vehicle Charging Systems, reflecting evolving technologies and industry needs. ANSI/NETA MTS–2023 is available for purchase at the NETA Bookstore at www.netaworld.org.
ANSI/NETA ECS–2024
ANSI/NETA ECS-2024, Standard for Electrical Commissioning of Electrical Power Equipment & Systems, 2024 Edition, completed the American National Standard revision process. ANSI administrative approval was received on July 2, 2024. ANSI/NETA ECS–2024 supersedes the 2020 Edition.
ANSI/NETA ECS describes the systematic process of documenting and placing into service newly installed or retrofitted electrical power equipment and systems. This document shall be used in conjunction with the most recent edition of ANSI/NETA ATS, Standard for Acceptance Testing Specifications for Electrical Power Equipment & Systems. The individual electrical components shall be subjected to factory and field tests, as required, to validate the individual components. It is not the intent of these specifications to provide comprehensive details on the commissioning of mechanical equipment, mechanical instrumentation systems, and related components.
The ANSI/NETA ECS revision includes the following new sections for Source-Specific Systems Commissioning: Photovoltaic (PV), Uninterruptible Power Supply (UPS), and Automatic Transfer Switches (ATS).
PARTICIPATION
Comments and suggestions on any of the standards are always welcome and should be directed to NETA. To learn more about the NETA standards review and revision process or to purchase these standards, please visit www.netaworld.org. To get involved and be considered as a ballot pool member please visit https://www.netaworld.org/standards/standards-get-involved or contact the NETA office at 888-300-6382.