IEC 62109-1

Safety of power converters for use in photovoltaic power systems — Part 1: General requirements

Applies to PCS
Issuing body
International Electrotechnical Commission
Current edition
Ed. 1.0 (2010)
Published
2010-04-28
Last verified
2026-09-05

Edition 2 is at FDIS (Sep 2026). The current Ed. 1.0 remains in force until it publishes. The IEC 63285 series (dedicated storage converter safety) is under preparation but has not published.

What it covers

The general safety standard for power conversion equipment in photovoltaic systems — and, by extension, the one most often cited for BESS PCS safety in IEC-aligned markets. It covers protection against electric shock, energy hazards, fire, mechanical and thermal risks for converters up to 1500 V DC and 1000 V AC. Applied to storage converters in practice until the dedicated IEC 63285 series takes over.

Editions

  1. Ed. 1.0 (2010) In force 2010-04-28

Next edition & pipeline

Targeted2026

Edition 2 at FDIS ballot (proof sent to secretariat September 4, 2026). Publication expected late 2026 or early 2027. The revision removes transportable/handheld equipment, adds PV arc-fault and earth-fault protection requirements, and updates battery-circuit provisions.

  • 2025-11-21 — DIS approved for FDIS
  • 2026-09-04 — FDIS proof to secretariat

Official source

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View IEC 62109-1 at International Electrotechnical Commission ↗

Related standards

IEC 62477-1UL 1741IEEE 1547

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