User manual

GMC-I Messtechnik GmbH 19

6.7.1 Absorption Index (DAR) – DC Charging Test

The absorption index test is part of the polarization index test.

Insulation resistance measurements are placed in relationship to

one another after 30 and 60 seconds.

Applications:

Faster version of the polarization index test.

Set Parameters

Start Measurement

The selected polarization index menu is only displayed until the

rotary switch is activated or the parameter is changed.

7 Test Resistor for Insulation Measurement for

Checking the Insulation Measuring Instrument

According to section 5.3.1.2 of VDE 0105-100 (EN 50110-1), the

following applies: “These measuring instruments must be tested

before, and if applicable after use.”

The two outermost jacks on the connection panel must be con-

nected to each other internally via a 10 MΩ test resistor to this

end.

The sum of test resistor and cable resistance (for both cables),

including test probes, amounts to 10 MΩ ±5%. This value allows

for quick self-testing.

➭ Connect the measurement cables to the + and COM jacks.

➭ Insert the test probes into the above described jacks.

➭ Select the RiSO/iNS measuring function with the rotary

switch, as well as the desired test voltage, e.g. RiSO 100V.

➭ Press the start key and view the measurement results.

DAR

60s

30s

---------=

Polarization Index

Test voltage switch position:

50 V / 100 V / 250 V / 500 V / 1000 V

Absorption index

Insulation resistance

START

COM

10M

COMSHIELD

ISO

INS

10 MΩ