Audible telephone noise from small harmonic sources on single-phase distribution
- Resource Type
- Conference
- Authors
- Jewell, W.; Miller, W.; Casey, T.
- Source
- 8th International Conference on Harmonics and Quality of Power. Proceedings (Cat. No.98EX227) Harmonics and quality of power Harmonics and Quality of Power Proceedings, 1998. Proceedings. 8th International Conference On. 2:890-895 vol.2 1998
- Subject
- Power, Energy and Industry Applications
Telephony
Acoustic noise
Earth
Wire
Power system harmonics
Voltage
Probes
Circuit noise
Hospitals
Conductors
- Language
Telephone company customers reported audible noise in their telephone service. Through measurements, analysis, and simulations, 540 Hz noise was found to be coupling from power distribution to telephone cables in a shared underground right-of-way. The source of the noise was small single-phase electronic loads dispersed throughout the power distribution system in the area.