Ключевые слова:
Communication equipment|Analogue signals|Electric power networks|Circuits|Electrical insulation|Noise (spurious signals)|Reliability|Signals|Performance|Interfaces|Impulse voltages|Warning devices|Testing conditions|Electrical protection equipment|Data security|Telecommunication|Test equipment|Safety devices|Electrical testing|Withstand voltage|Performance testing|Electric power systems|Remote control systems|Type testing|Telecommunication systems|Environment (working)