HANDBOOK REQUIREMENTS - Central Maine Power Company
HANDBOOK REQUIREMENTS - Central Maine Power Company
HANDBOOK REQUIREMENTS - Central Maine Power Company
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93<br />
93<br />
1104. HARMONIC LOADS<br />
Equipment that draws current with a high harmonic content<br />
can have a serious impact on the quality of the <strong>Company</strong>'s service.<br />
The <strong>Company</strong> requires that any service comply with the<br />
maximum harmonic current distortion limits given in IEEE<br />
Standard 519-1992. Table 10.3 of that standard provides the<br />
limits for individual harmonic distortion and Total Demand<br />
Distortion as a percent of maximum demand load current. A<br />
maximum Total Demand Distortion of 5% is generally required at<br />
the point of common coupling as defined in IEEE Standard 519-<br />
1992.<br />
Examples of equipment that draw high harmonic content<br />
current include variable speed and variable frequency drives,<br />
computer power supplies, electronic lighting ballasts and<br />
rectifiers.