Ключевые слова:
All-or-nothing relays, Relays, Switches, Switchgear, Electromechanical devices, Quality assurance systems, Electronic equipment and components, Assessed quality, Qualification approval, Approval testing, Inspection, Specification (approval), Contaminants, Particulate materials, Noise (spurious signals), Endurance testing, Vibration testing, Marking, Non-destructive testing, Electrical testing, Testing conditions, Performance testing, Environmental testing, Electric load cycling tests, Chemical-resistance tests, Test equipment, Circuits