MI 3205 TeraOhm XA 5kV
Measurements
49
5.9 Withstanding Voltage Test
This function offers Withstanding Voltage Test of insulation material. It covers two types
of tests:
Breakdown voltage testing of high voltage device, e.g. transient suppressors.
DC withstanding voltage test for insulation coordination purposes.
Both functions require breakdown current detection. In the function, the test voltage is
increased from the starting voltage to the stop voltage over a predefined time (set by the
parameters). The Stop voltage is then maintained for a predefined test time.
Figure 5.21: Withstanding Voltage Test menu
Test parameters for Withstanding Voltage Test
Itrigg
Set trigger leakage current step – 100
A (max 1.00 mA).
Ustart
Stop test voltage – step 50 V (50 V – 1 kV) and 100 V (1 kV – 5 kV).
Uend
Start test voltage – step 50 V (50 V – 1 kV) and 100 V (1 kV – 5 kV).
Tramp
Duration of the test ramp voltage (mm:ss) – step 1 s (max time 99 min).
Tstart
Duration of the start test voltage (mm:ss) – step 1 s (max time 99 min).
Tend
Duration of constant test voltage after reaching stop value (mm:ss) – step 1
s (max time 99 min).
Keys:
Selects the field to be changed.
Modifies selected field.
MEM
Enters Save custom test menu.
Saves results (if present).
START/STOP
Start or Stop the Withstanding Voltage test.
ESC
Exits to Measurements menu.
Withstanding Voltage test procedure:
Select the
Withstanding Voltage test
function.
Set the test parameters (voltage, timer …).
Connect the test leads to the instrument and to the test object.
Press the
START/STOP
key to start the measurement.
Wait until the set timer runs out or until breakdown occurs, (the result will be
displayed).
Wait for the object under test to discharge.
Store the result by pressing
MEM
key (optional).
