Electromagnetic interference from fluorescent lighting operated with solid-state ballasts in various sites

Conference · Fri Jun 01 04:00:00 EDT 1984

OSTI ID:6539434

Harms, M G; Leung, L P; Verderber, R R

Solid-state ballasts with 20 to 30 kHz fundamental frequencies were used to operate fluorescent lamps in office, screen room, and open-field sites. The test equipment and layout are described and the radiated and conducted electromagnetic interference (EMI) data are given for six commercially available ballasts from different manufacturers. EMI data from each location are presented that indicate the suitability of using an office site for future EMI measurements. Broadband EMI data are compared with data from a spectrum analyzer, which justifies the use of an RMS voltmeter in these measurements. A reduction in radiated EMI of 36 dB is achieved by replacing a strip fixture with an EMI-hardened fixture that has a wire grid embedded in its lens. Results of increasing lamp/antenna distance are given; we verify that, for distances greater than 1 meter, the radiated EMI amplitude drops off as a function of 1/d/sup 3/.

• Research Organization: Lawrence Berkeley Lab., CA (USA)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 6539434
• Report Number(s): LBL-17998; CONF-8409108-5; ON: DE84016902
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320100* -- Energy Conservation
Consumption
& Utilization-- Buildings
BALLASTS
BUILDINGS
ELECTRONIC CIRCUITS
ENERGY SYSTEMS
FLUORESCENT LAMPS
INTERFERENCE
LIGHT BULBS
LIGHTING SYSTEMS
OFFICE BUILDINGS