Hazard Classification
Safety standards for audio and communication technology require hazard-based engineering to protect users from electric shock and thermal injuries. Under the framework of en 62368-1, electrical energy sources are classified into three distinct categories based on their potential to cause pain or injury. This classification system determines what level of safeguard is necessary between the power source and both skilled and ordinary persons.
Safeguard Architecture
Designing printed circuit boards to meet these hazard categories requires specific creepage and clearance distances between conductive traces to prevent dielectric breakdown. Engineers must incorporate appropriate solid insulation or protective earthing to prevent the spread of flames from high-energy circuits. Test protocols involve simulated fault conditions to verify that the protective systems remain functional under extreme stress or during component failures.
Compliance must be documented in a structured technical file before the electronic assembly can receive its safety certification for commercial sale.
Compliance Lifecycle
Systematic safety assessments must begin during the initial layout and schematic design phases of the printed circuit board assembly. Retrofitting safeguards after fabrication is finished adds high cost and delays the product launch. This safety standard replaces older prescriptive rules with a performance-based approach that accommodates new technologies more fluidly.
