IEC 61558-2-12:2011 PDF

Scope: This part of IEC 61558 deals with the safety of constant voltage transformers for general applications and power supply units for constant voltage for general applications. Constant voltage transformers incorporating electronic circuits are also covered by this standard. This standard is applicable to transformers and power supply (linear) with internal operating frequencies not exceeding 500 Hz. This standard used in combination with Part 2-16 for switch mode power supply (SMPS) units is also applicable to power supplies with internal operating frequencies higher than 500 Hz. Where the two requirements are in conflict, the most severe take precedence. The rated supply voltage does not exceed 1 000 V a.c., the rated supply frequency does not exceed 500 Hz, the internal operating resonant frequency does not exceed 30 kHz and the internal operating frequency does not exceed 100 MHz.

IEC 61558-2-12:2011 history

0000 IEC 61558-2-12:2024 RLV
2011 IEC 61558-2-12:2011 Safety of transformers, reactors, power supply units and combinations therof - Part 2-12: Particular requirements and tests for constant voltage transformers and power supply units for constant voltage
2001 IEC 61558-2-12:2001 Safety of power transformers, power supply units and similar devices - Part 2-12: Particular requirements for constant voltage transformers