Operation manual of TH2685/TH2686 Electrolytic Capacitor Leakage Current Meter
6
measurement on the DUT.
12
Voltage-adjustment
knob
On the status of discharge, the tested voltage can be
adjusted freely, no available on the other status
13
Test terminal
Connect the tested capacitor
，
the right black connector post
is the voltage output
（
negative voltage output
），
connect
the negative pole of capacitor, and the left red connector
post is the positive pole of capacitor.
14
Ground terminal
Be used to connect the shielding ground of tested capacitor
15
Power switch
Press to ON
，
and the power is connected.
4. Operational step
1
．
Insert the plug
，
and the switch is pressed to ON
，
there is digit display in the display
window
：（
1
）
TH2685
：
current window displays 26
，
voltage window displays 85
，
delay 1s
，
current window displays the current leakage current value, and the voltage
window displays the current output voltage value
；（
2
）
TH2686
：
current window
displays 26
，
voltage window displays 86
，
delay 1s
，
current window displays the current
leakage current value, and the voltage window displays the current output voltage value.
The initiated status is
：（
a
）
The voltage of TH2685 is 200V bin
，
200V indicator lights
；
the indicator of TH2686 with the voltage of 500V lights
；（
b
）
when the instrument is on
the status of measurement
，
correction indicator is dark
；（
c
）
the display data is the
unlock status
，
lock indicator is dark
；
（
d
）
when the instrument is on the status of
measurement, the measurement indicator lights. After 5 min warm-up, the instrument
begins to test.
2
．
On the status of discharge, the suitable voltage can be adjusted using potentiometer
，
and
the tested voltage value can be displayed correctly in the voltage display window. After
the adjustment of voltage, please don’t adjust the potentiometer randomly
；
set suitable
charge time using time drive plate
，
the range of charge time is 0 ~ 99.9s
，
if the setting
is 546
，
and the charge time is 54.6s
；
Set the max. allowing leakage current value using
the current drive plate on the panel
，
the range of leakage current value is 0 ~ 19.99mA
，
and the format is AB
×
10
n
nA
，
if the set leakage current value is 324
，
then max. allowing
leakage current value is 32
×
10
4
nA=320
μ
A
。
3
．
Press correction key to make the instrument being on the status of correction
，
current
indication window display is OP-
，
and the voltage indication window displays current
drive plate and the value of time drive plate respectively
，
so now can check if the set
charge time and current limit is correct. Press start key, then instrument can perform
open calibration on test fixture. After the end of calibration, the current indication
window displays OPC
，
press correction key
，
then the instrument can be on the
measurement status
，
now the bin base number of each range should all be zero.
4
．
Connect the tested capacitor
：
（
1
）
when the instrument is on the discharge status
，
press start key or discharge key to
make the instrument on the discharge status
，
the charge indicator lights
，
according to the
set charge time of drive plate, the instrument can execute charge on the tested
capacitor
；
