Glossary and Abbreviations
© b2 electronic GmbH
DHV0086 Rev06
102
11 Glossary and Abbreviations
The following alphabetical list explains abbreviations and selected terms
used in this document.
Term
Explanation
Arc
Self-maintained gas conduction for which most of the charge carriers are
electrons supplied by primary-electron emission. (source: IEC)
Auto adjust frequency
“0.1 Hz/Auto”
Mode that maximizes output frequency to highest allowable value up to 0.1 Hz.
• Greatest allowable frequency depends on the test load and test voltage
applied.
• For loads greater than 0.5 µF, the instrument automatically reduces the
frequency.
DUT
Device Under Test
Duty (continuous)
Load state in which the unit operates for an extended period.
Continuous means: no limitation in operating time based on temperature
limits
Fault
An unplanned occurrence or defect in an item which may result in one or
more failures of the item itself or of other associated equipment (source: IEC)
Frequency [Hz]
Number of cycles per unit of time; f=1/period (time), units = Hz
1Hz = 1cycle / 1 second
0.1 Hz = 1cycle / 10 second , etc.
MWT
Monitored withstand test
HV
High Voltage:
Voltage levels used in power distribution:
• Medium Voltage: up to 36 kV
• High Voltage: up to 110 kV
• Extremely High Voltage: 220 kV, 380 kV or higher
(according to IEC/International Electrotechnical Vocabulary)
IEC
International Electrotechnical Commission
Peak value
Maximum Voltage = Vmax
RMS value
Root mean square voltage
•
Vrms = Vmax / √2
