Title :
Electromagnetic interference examples of telecommunications system in the frequency range from 2kHz to 150kHz
Author :
Murakawa, Kazuo ; Hirasawa, Norihito ; Ito, Hidenori ; Ogura, Yasunori
Author_Institution :
EMC Eng. Group, NTT EAST Corp., Tokyo, Japan
Abstract :
Recently malfunctions of telecommunication installations caused by switching noises of electric equipment or devices have been increasing. The switching noises usually have low frequencies between 2 kHz and 150 kHz. This paper shows some electric interference examples of telecommunication system cause by ac mains noises in frequency range from 2 kHz to 150 kHz. This paper also shows a necessity of emission requirements below 150 kHz for all equipment against EMC problems.
Keywords :
electrical installation; electromagnetic interference; telecommunication equipment; ac mains noises; electric devices; electric equipment; electric interference; electromagnetic interference; emission requirements; frequency 2 kHz to 150 kHz; switching noise; telecommunication installations; telecommunications system; Acoustic noise; Modems; Noise; Optical fiber cables; Resistance heating; Shape; Telecommunications; 2kHz to 150kHz; EMI examples on telecommunication equipment; ac mains conduction noise; emission requiremet; switching noise;
Conference_Titel :
Electromagnetic Compatibility, Tokyo (EMC'14/Tokyo), 2014 International Symposium on
Conference_Location :
Tokyo
