This chapter of GB/T 19212.1-2016 applies to short-circuit voltage In addition to the following provisions, this chapter of GB/T 19212.1-2016 applies to heating: the following clause is added to this chapter: 14.101 For SMPS of internal transformers with an internal frequency higher than 1kHz, thermocouples or equivalent methods can be used to measure the temperature to determine the temperature of the winding and insulation materials. When using thermocouples for measurement, the maximum temperature value of the winding in Table 1 of GB/T19212.1-2016 should be subtracted by 10C. The thermocouples should be installed on the surface that is easily accessible to the internal transformer. Note: Thermocouples should not be combined with windings. Short circuit and overload protection: In addition to the following clauses, this chapter of GB/T 19212.1-2016 applies: the design and application of electronic circuits should not cause electric shock or fire in the event of faults within the SMPS range, and unintentional operation of equipment should not weaken safety. Inspect whether the requirements are met by evaluating the fault conditions specified in Appendix H of GB/T19212.1-2016
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