GB/T 19212.9-2016
ActiveSafety of transformers, reactors, power supply units and combinations thereof—Part 9: Particular requirements and tests for transformers and power supply units for bells and chimes
变压器、电抗器、电源装置及其组合的安全 第9部分：电铃和电钟用变压器及电源装置的特殊要求和试验
Application Summary AI generated
This standard specifies safety requirements and test methods for transformers and power supply units designed specifically for bells and chimes. It is applied in the manufacturing and certification of low-voltage power supplies used in residential and commercial doorbell systems, alarm chimes, and similar signaling devices. The standard ensures these components meet electrical insulation, thermal, and mechanical safety criteria to prevent fire or electric shock hazards during normal use and fault conditions.
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Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.