HT instruments HT7052 - Manual (Page 31)

HT7052
EN - 29
6.8.2 Perform the measurement
1. Switch on the instrument by pressing the ON/OFF key
2. Select with arrow keys  or  the item “WITHSTANDING VOLTAGE DC” on main
menu and confirm with SELECT key. The screen of Fig. 43 is shown by the meter
3. Connect the red part of the Test lead 1 or Test leads 2 (see § 4.2) to the +OUTPUT
input and the black part of the Test leads 2 (see § 4.2) to the –OUTPUT input
4. Connect the tip of Test lead 1 or Test leads 2 (positive) and the black cable of Test
leads 2 (negative) to the object on test (see Fig. 46)
Fig. 46: Connection of instrument for withstanding test
5. Press START/STOP key to activate the measurement
6. Wait until the set timers run out or until breakdown occurs. The result of test is shown
at display (see Fig. 44) with meaning of items descript in Table 10
7. Wait for the object under test to discharge
8. For saving the result see § 7
Parameter at display Description
2000V Start test voltage
7000V Stop test voltage
7221V Applied test voltage
I=0.002mA Measured leakage current
Tm:01min 00s Timer information
Table 10: Meaning of parameters of withstanding test
CAUTION
 Breakdown is detected when the measured current reaches or exceeds the
set current level Itrigg (see § 6.8.1)
 The timer shows the time needed to complete each step during the
measurement and it shows the total measurement period after the
completion of the measurement
 A high-voltage warning symbol appears on the display during the
measurement to warn the operator of a potentially dangerous test voltage