AMETEK MX CTSL - Manual (Page 71)

User Manual MX-CTSL Compliance Test System
California Instruments Revision J 71
The following checklist shows all available setup options for a Harmonics test.
Field Description / Purpose
Test Type Select between Steady State Harmonics or Transitory Harmonics. EUT's that have a
constant load pattern can be tested using the steady state mode. If you select
Amendment 14, you can also enable or disable inter harmonics evaluation. With the
pending new revision of EN 61000-4-7, current interharmonics have to be evaluation in
addition to the harmonics.
Frequency Choose 50 Hz or 60 Hz. This choice will be used to program the AC source output
frequency. If no AC source is available or the AC source control option has not been
selected, the measured frequency is checked against the user setting and an error
message is generated if a discrepancy is detected. For IEC compliance testing, 50 Hz
should be selected.
Test Class Select the appropriate test class for the equipment under test. See paragraph 2.4.1
for test class selection.
Voltage Select the correct line voltage. Default choices are 115 and 230 V RMS Line to
neutral. A user-defined value may be entered by selecting the "Other" option. This
setting is used to program the AC power source output voltage. If no AC source is
available or the AC source control setting in the advanced setup screen has not been
selected, the operator is responsible for ensuring the correct line voltage is applied to
the EUT.
Load Selects single or three phase mode. On single-phase CTS systems, the three phase
selection is not available. For three-phase CTS systems, a wye connection to the
PACS-3 must be used.
Test Limit The CTSMXL retains a database of harmonic current test limits. This setting selects
the limit set to use. Available options are European and Japanese. For normal IEC
testing, the European option should be selected.
Cycles per
window The present standard requires the use of a 10 period acquisition window at 50 Hz and
12 periods at 60 Hz for a 200 msec at either line frequency.
EUT This field may be used to enter information about the equipment under test. This field
is used to hold a default value.
Tested by This field may be used to enter operator information. This field is used to hold a default
value.
Comment Comment field for general use. This field is used to hold a default value.
Customer If the test is performed on behalf of a third party, information about the entity for which
the test is performed may be entered here. This field is used to hold a default value.
Test Margin Determines at what scale factor the harmonic test limits will be applied. For most
situations, this value should be set to 100 %. If testing is done for pre-compliance,
setting a lower margin will provide an extra margin of safety against system tolerances
of different test systems. This field is used to hold a default value.
Test Duration Enter the total test time. For Steady State Harmonics, the default test time is 1.0
minute. For Transitory Harmonics, the default test time is 2.5 minutes. For flicker
tests, the default time is 10 minutes. Maximum test time is 1440 minutes or 24 hours.
This field is used to hold a default value.
Table 5-1: IEC Harmonics Setup Parameters