IEC 61730-2:2023

Overview

IEC 61730-2:2023 - Photovoltaic (PV) module safety qualification Part 2: Requirements for testing - specifies the test sequence and criteria used to verify the safety of PV modules whose construction has been assessed under IEC 61730-1. Edition 3.0 (2023-09) with Corrigendum 1 (2024-10) defines the basic safety tests and additional tests tied to intended end-use, aimed at detecting failures that could lead to fire, electric shock, or personal injury. The standard is for safety qualification only and is used together with IEC 61730-1; it also recognizes additional requirements from relevant ISO documents and national/local codes.

Key technical topics and requirements

The document organizes tests into clear categories and specifies test procedures, sampling and pass criteria:

• Test categories: environmental stress tests, general inspection, electrical shock hazard, fire hazard, mechanical stress.
• Test sequence and pass criteria: procedures to detect internal/external component breakdown that may cause hazardous conditions.
• Representative test procedures (identified by MST numbers) include:
  • Visual inspection (MST 01) and performance checks at STC (MST 02/MST 03)
  • Insulation and leakage tests (MST 04, MST 16, MST 17)
  • Fire and ignitability tests (MST 23, MST 24)
  • Mechanical tests: static mechanical load, module breakage, peel and lap shear (MST 21/32/34/35/36)
  • Thermal and environmental durability: thermal cycling, damp heat, humidity-freeze, UV, hot-spot endurance (MST 51–54, 22, 52–53)
  • Termination and connector robustness, bypass diode and reverse current overload tests (MST 25–26, 33, 42)
• Documentation: sampling plans, detailed test reports and final pass/fail criteria are defined to support certification.

Practical applications and who uses this standard

IEC 61730-2 is essential for anyone involved in PV safety assessment and certification:

• PV module manufacturers - design validation and safety qualification prior to market release
• Test laboratories and certification bodies - standardized test procedures and reporting for safety certification
• System designers, EPC contractors and installers - understanding module safety limits for system integration and risk mitigation
• Regulators and code authorities - reference for compliance with electrical safety and fire-safety requirements
• Insurance and risk assessors - evidence of tested safety performance for underwriting

Related standards

• IEC 61730-1 (construction and qualitative requirements) - mandatory companion to Part 2
• Relevant ISO documents and national/local electrical and fire codes - may add application-specific testing or installation requirements

Keywords: IEC 61730-2:2023, PV module safety, photovoltaic module testing, safety qualification, test sequence, fire hazard, electrical shock, environmental stress tests, pass criteria.