Megger ADX15, User Manual

Page: 177 / 179

DC Insulation Resistance and HiPot Test Specifications
Table 18: DC IR and HiPot test specifications.
Parameter Variant Value
Voltage accuracy ± 2% ± 5 V
Maximum output current 1.2 mA
Displayed current resolution 1 nA
Current measurement resolution 16 pA
Current accuracy Test voltage 0–2 kV ± 4% ± 5 nA
Test voltage 2–4 kV ± 4% ± 10 nA
Test voltage 4–8 kV ± 4% ± 25 nA
Over current trip settings Adjustable to 1.2 mA
IR measurement range 100 kΩ–1 TΩ
Surge Test Specifications
Table 19:
Surge test specifications.
Parameter Variant Value
Nominal surge capacitance 100 nF
Typical surge energy 11.25 J at 15 kV
Typical short circuit current 700 A
Repetition rate 4 Hz nominal
Minimum inductance 4 kV 70 µH
6 kV 100 µH
12 kV 120 µH
15 kV 170 µH
Voltage accuracy ±10%
Table 20: Surge through Impedance Transformer test specifications.
Parameter Value
Maximum voltage 1.5 kV
Short circuit current 2000 A
Minimum inductance 3 µH
Voltage accuracy (Voltages < 1 kV) ±12% ±3 V
Table 21: Surge with Partial Discharge (PD) test specifications.
Parameter Value
Inception and extinction voltages (PDIV, PDEV) Measured per IEC 61934
Repetitive inception and extinction voltages (RPDIV, RPDEV) Measured per IEC 61934
Programmable PD threshold range (Resolution to 0.1 mV) 1.0–999 mV
PD time scaling 1.024–26,400 µs
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DC Insulation Resistance and HiPot Test Specifications