METREL MD 9273 - I - Online current measurement

MD 9273 Leakage Clamp I – Online current measurement
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Connection diagram
Use Voltage test connection scheme from MD 9273 Manual.
Measurement procedure
• Connect MD 9273 to the item to be tested and set Bluetooth
®
mode.
• Enter the Voltage function and wait for active Bluetooth
®
communication sign.
• Set test parameter.
• Start the continuous measurement.
• Stop the measurement.
• Save results (optional).
Figure C.7: Voltage test results
Measurement results / sub-results
Urms
Effective voltage value – last obtained result.
Urms min
Minimum effective voltage value during measurement time duration.
Urms max
Maximum effective voltage value during measurement time duration.
Udc
DC voltage value.
THDu [V]
Effective voltage value of all harmonics.
THDu [%]
Total harmonic distortion.
Uh
Effective voltage value of set harmonic (5
th
on Figure C.7: Voltage test results).
CFU
Voltage Crest factor – peak voltage to effective voltage ratio.
Freq
Fundamental frequency.
Appendix D I – Online current measurement