METREL MD 9273 - Imax - Inrush Current Recording

MD 9273 Leakage Clamp Imax – Inrush Current Recording
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Figure D.8: Current test menu
Measurement parameters
h
Harmonic setup [1 to 19, 1
st
is fundamental frequency]
Connection diagram
Use Current test connection scheme from MD 9273 Manual.
Measurement procedure
• Connect MD 9273 to the item to be tested and set Bluetooth
®
mode.
• Enter the Current function and wait for active Bluetooth
®
communication sign.
• Set test parameter.
• Start the continuous measurement.
• Stop the measurement.
• Save results (optional).
Figure D.9: Current test results
Measurement results / sub-results
Irms
Effective current value – last obtained result
Irms min
Minimum effective current value during measurement time duration
Irms max
Maximum effective current value during measurement time duration
THDi [A]
Effective current value of all harmonics
THDi [%]
Total harmonic distortion
Ih
Effective current value of set harmonic (5
th
onFigure C.7: Voltage test resultsFigure D.9)
CFI
Current Crest factor – peak current to effective current ratio
Freq
Fundamental frequency
Appendix E I
max
– Inrush Current Recording
Inrush current function records current and voltage transients that occur when load is turned on. Recorded
values display on the screen of the master instrument in separate charts. MD 9273 voltage input should be
connected to supply circuit so that voltage dip threshold trigger event is effective. MD 9273 calculates the
minimum circuit effective voltage during recorded transient. Only one trigger event can be active at the same
time, Inrush current or Voltage dip threshold; when one is set, the other is switched off automatically.