B2 HVA90 - Page 29

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Design and Construction
© b2 electronic GmbH
DHV0078 b2 EN
29
Output modes
The HVA can carry out HV test in the following output modes:
Output mode Characteristics
DC [-/+] Single polarity output. DUT is polarized
(negative/positive) with respect to ground
• Not recommended for testing extruded cables
(e.g. XLPE cables)
• Measured valued: dielectric loss of the DUT
(including leakage current across terminations)
• DC: Most commonly used DC output mode
VLF Withstand
Test (VLF)
sine-/square wave
• Suitable for testing extruded cables
(e.g. XLPE cables) and other DUTs
• Measured values shown as RMS
Vacuum bottle
testing
• Not suitable for testing with DC above DUT voltage
rating (X-ray Hazard)
• Possible in manual and automatic test modes
• Trip current and rise rate are user defined
• Measured valued: peak voltage
Sheath test
• Suitable for sheath test
• Duration is user defined
• Max. test voltage: 10 kV
Sheath fault
location mode
• Suitable for sheath fault location
• Duration is user defined
• Pulse user defined
(1:3 / 4 s, 1:5 / 4 s, 1:5 / 6 s, 1:9 / 6 s)