Operation Manual

TeraOhm 5kV

Legend of displayed symbols:

INSULATION RESISTANCE

Name of selected function

SETTING PARAMETERS:

Unominal

1000V

Set test voltage – step 50 V

Timer 10min 00s

Duration of measurement

Timer on/off ON

ON: timer enabled, OFF: timer disabled

Time1 01min 00s

Time to accept and display first Rmin and

Rmax result

Timer and Time1 are independent timers. Maximum time for each of them is

30 min 60 s.

Warning!

• Refer to Warnings chapter for safety precautions!

5.6. Diagnostic test

Selecting this function displays the following states (initial state and state with results

after the completion of the measurement).

Initial display Display with results

Fig. 11. Diagnostic test display states

This is a long duration test for evaluating the quality of the insulation material under test.

The results of this test enable a decision to be made on the preventive replacement of

the insulation material.

DIELECTRIC ABSORPTION RATIO (DAR)

DAR is ratio of Insulation Resistance values measured after 15s and after 1minute. The

DC test voltage is present during the whole period of the measurement (also Insulation

Resistance measurement is running). At the end DAR ratio is displayed:

(

)

()

DAR

iso

min1