AMETEK MXCTSH Administrator Manual - Manual (Page 19)

MX Compliance Test System System Administrator Manual
3.2 Configuration Limits - Voltage Distortion
During current harmonics testing, the voltage distortion of the AC Source or Line voltage is
constantly monitored by the MXCTS system. The EN 61000-2-3 and EN 61000-3-12 voltage
distortion test limits are displayed in this screen and can be modified if and when a new standard
is issued that applies different limits. The measured voltage distortion is used by the software to
compensate for any distortion that may occur as a result of the EUT harmonic currents.
The data is shown in percentage of the fundamental. This 0.1 is equivalent to 0.1 % of the
fundamental voltage at 50 or 60 Hz. The limits shown are applied to the measured voltage
harmonics. The maximum number of harmonics supported is 50 but only 40 are covered by the
EN 61000-3-2 and EN 61000-3-12 standards.
Note that as of this date, the harmonic voltage distortion limits for IEC 61000-3-12 have not been
established as the test standard has not been published yet. It may be necessary to change the
data in the CTSMXH database once final limits have been established.
Harmonics for which no limit applies are set to zero.
Revision B 19