ANSI C82.77-2002 pdf download Harmonic Emission Limits— Related Power Quality Requirements for Lighting Equipment
1 Scope
This standard specifies harmonic limits and methods of measurement for lighting equipment. This standard covers all types of lighting equipment that is used for general illumination (typically found in residential, commercial, and industrial applications) and which is connected to any of the following commonly distributed 60 Hz alternating current (AC) power line systems:
1 20V, Single Phase
220/230V, Single Phase
208/240V, Single Phase
277V, Single Phase
480V, 3 Phase
Note: These line voltages are nominal and include commonly encountered nameplate variations of the above. As an example, products rated at either 117, 120, or 125 Volts AC would be covered as being inclusive of nominal 120V systems. This standard summarizes the de-facto limits that have been employed successfully by the industry thus far and establishes them as appropriate for lighting equipment used in the United States (used in conjunction with US local wiring, building, distribution and lighting practices).
This standard also covers certain special use lighting areas: roadway, sports arena,convention center, stage, and studio.
Limits are only applicable to the specific categories of lighting equipment defined in the standard. All other types of lighting equipment, although covered, do not have limits at this time and do not need to be measured or tested, but shall be deemed to be in compliance with this standard without measurement or testing by the manufacturer or any third party.
Harmonic emission limits, where they are defined by this standard, shall include both harmonic and interharmonic emissions over the low frequency range 0 – 9 kHz. At this time, limits for interharmonics are not specified.
This standard covers lighting equipment regardless of wattage (operating input power level) or operating input current. However, emission limits will only be specified over a range of power or current deemed to be warranted at this time.