BS EN IEC 61558‑2‑3:2025 ✓ Most Recent

This part of IEC 61558 deals with the safety of ignition transformers for gas and oil burners. Ignition transformers incorporating electronic circuits are also covered by this document.

NOTE 1 Safety includes electrical, thermal and mechanical aspects.

Unless otherwise specified, from here onward, the term transformer covers ignition transformers for gas and oil burners.

For switch mode power supply units IEC 61558-2-16 is applicable together with this document. Where two requirements are in conflict, the most severe takes precedence.

This document is applicable to fixed single-phase, air-cooled (natural or forced) associated dry-type transformers used in the ignition systems of gas and oil burners. The windings can be encapsulated or non-encapsulated.

The rated supply voltage does not exceed 1 000 V AC and the rated supply frequency and the internal operating frequencies do not exceed 500 Hz.

The rated short-circuit output current does not exceed 500 mA AC.

The no-load output voltage or the rated output voltage does not exceed 15 000 V AC.

This part is not applicable to external circuits and their components intended to be connected to the input and output terminals or socket-outlets of the transformers. See more