b2 electronic PD30-E - Page 63

Glosary and Abbreviations
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Term Explanation
IEC International Electrotechnical Commission
Peak value Maximum Voltage = Vmax
RMS value Root Mean Square voltage
• Vrms=Vmax/√2
To Short Forcingtheelectricpotentialdi󰀨erencesbetweentwoormoreconductivepartstobeequalto
or close to zero
(Innitecurrentowsinashortcircuit)
To Trip Opening the circuit
(nocurrentowsinopencircuit)
SFL Sheath Fault Location
ST Sheath Test
TD Tan Delta
TDTS Tan Delta Time Stability (TD Temporal Stability)
DTD Di󰀨erentialTanDelta
VLF Very Low Frequency
• Typically between 0.01 -0.1 Hz