The Bureau of Indian Standards (BIS) has notified six critical revisions to Indian Standards under Rule 15(1) of the BIS Rules, 2018, aimed at enhancing safety, design, and reliability in photovoltaic (PV) systems and nuclear power plant equipment.
All revised standards are effective from 9 June 2025, and the previous versions will be withdrawn on 9 December 2025, offering a six-month transition window for the industry.
🔍 Key Highlights:
- Standards align with the latest IEC international guidelines for photovoltaic modules, arrays, and reference devices.
- Enhanced safety and testing protocols introduced for PV modules.
- Nuclear sector receives updated spec for three-phase induction motors.
- Significant revisions improve compliance, reliability, and global harmonization.
📊 Summary Table of Revised BIS Standards:
| Sl. No. | Revised Standard | Title & Details | Withdrawn Standard | Withdrawal Date |
| 1 | IS 12762 (Part 2) : 2025 IEC 60904-2 : 2023 | Photovoltaic Devices — Requirements for Reference Devices (3rd Rev.) | IS 12762 (Part 2) : 2018 IEC 60904-2 : 2015 | 09 Dec 2025 |
| 2 | IS 14578 : 2025 | Three Phase Induction Motors for Use in Nuclear Power Plants (1st Rev.) | IS 14578 : 1999 | 09 Dec 2025 |
| 3 | IS/IEC 61730-1 : 2023 | PV Modules — Safety Qualification Part 1: Requirements for Construction (2nd Rev.) | IS/IEC 61730-1 : 2016 | 09 Dec 2025 |
| 4 | IS/IEC 61730-2 : 2023 | PV Modules — Safety Qualification Part 2: Requirements for Testing (2nd Rev.) | IS/IEC 61730-2 : 2016 | 09 Dec 2025 |
| 5 | IS/IEC 62548-1 : 2023 | PV Arrays Part 1: Design Requirements (1st Rev.) | IS/IEC 62548 : 2016 | 09 Dec 2025 |
| 6 | IS/IEC TS 62915 : 2023 | PV Modules — Retesting for Type Approval, Design & Safety Qualification (1st Rev.) | IS/IEC TS 62915 : 2018 | 09 Dec 2025 |
⚙️ Industry Impact:
Manufacturers, EPC contractors, and testing agencies in the solar energy and nuclear sectors must update processes, documentation, and quality assurance systems in line with the new standards.
This update ensures that India’s renewable energy infrastructure and critical power systems remain on par with global safety and design benchmarks.
