22
,120 V
Fig. 30. Expected voltage on discharge input
How to carry out the measurement
STEP 1. Set rotary switch to DISC.TIME (discharge time) position. The heading according to fig.26 is displayed.
STEP 2. Select internal system measurement by pressing SYST. key (inter. 60 V 5 s or inter. 120 V 5 s is displayed).
STEP 3. Select 60 V or 120 V measuring system using Ulim key.
STEP 4. Connect test cables to equipment under test and the tested item to line voltage as shown in figure below.
C
U :
U
:
t
:
R :
in
lim
lim
in
t:
∆
0 Vp...8 0 0 Vp
6 0 V / 1 2 0 V
5 s
9 6 M
Ω
0s...10s
Fig. 31. Connection of test cables
STEP
5. Press START/STOP key to prepare the instrument for switching off mains voltage. Ready is displayed after 1 s approx.
Low Voltage message is displayed if the voltage on input mains is not appropriate (less than min working voltage)
or not connected (check input circuit, mains voltage).
STEP 6. Pull out power supply connector and wait for the result to be displayed. If the disconnection voltage is high enough to
carry out a measurement, (see fig. 25) Start message is displayed and the measurement will be performed. If the
voltage is not high enough then the result 0.0 s and Repeat message are displayed. In this instance repeat
measurement from STEP 3. If the result 0.0 s and Repeat message reappears repeat measurement 5 to 10 times
successively, the result 0.0. it can be accepted as valid. Timeout is displayed if the double connection element is not
pulled out in 10 s, or discharging time is higher than 10 s.
STEP 7. Save displayed results for documentation purpose (see instruction in chapter 5.2. on how to save displayed results).
4.8. LEAKAGE CURRENTS
4.8.1. LEAKAGE CURRENT
A PP LIA N C E M U LTIT EST ER
C .A 6160
T E S T
S O C K E T
O B JECT U N DER T EST
F2
F1
Fig. 32. Test circuitry
