another part of measuring object.
d. Then the digital display voltage is the AC voltage of the metrical object in fact.
(3) Insulation resistance testing
a. Connection of measuring lead
I
nsert the big plug of lead with probe to measuring terminal “
L
”, the plug of lead with clip to
measuring terminal “
E
”, and the black plug of AC measuring lead with a small clip to
measuring terminal
“
COM
”, respectively.
b. Testing lead connected
The lead with the big measuring clip is the leads connected with the earth. The lead with the
high voltage’s probe is the highest-voltage leads. The lead with connecting in “
COM
” socket
is the shield leads meeting on the surface of the testing resource to preventing the surface
leak affecting testing resistance. Using the rotary switch select the “
OFF
” position, connect
the clip of lead to the other side of measuring object, and the AC measuring lead’s small clip
to the surface of measuring object.
c. Rating Voltage select
Select the Rating Voltage adapt to the insulation resistance you want to test .
Turn the rotating switch to the voltage segment
needed.
d. Testing
Connect the probe to object, press the button “
TEST/STOP
”, “
HV
” indicator light, which
indicates measuring voltage happen.
After testing begins, the number displayed on LCD is the insulation value of object tested.
e. End
After the measurement completed, push down the switch of the “
TEST/STOP
” once
more .When the red LED off, means the output testing high voltage has been cut. Turn the
rotary switch to “
OFF
” position. If measure the contain nature load, please short the
residually electric of the testing resource first before move the testing leads.
(4) Data hold
On any range, press the
“
HOLD
” key to lock display value, and the “
HOLD
” sign will
appear on the display, press it again to exit.
(5) Back light
On any range, press the
“
LIGHT
” key to light the back light. The light can wink
automatically after approx. 10 seconds.
8. Battery replacement
1) When the battery voltage drop below proper operation range,
the
“
” symbol will appear on the LCD display and the
battery need to changed (or charge the battery by the charger).
2) Before changing the battery, set the selector switch
to “
OFF
” position.
3) Open the cover of the battery cabinet by a screwdriver.
4) Replace the old battery with the same type battery.
5) Close the battery cabinet cover and fasten the screw.
Caution:
Dispose the used batteries according to the rules, which are defined by each
community.
9. Maintenance
This is a precise instrument and needs careful maintenance.
a. Don’t open the back lid at will. Don’t use it if the back lib not fixed.
b. Put it in the place dry and airiness if the meter will be leave unused for long term.
c
. Don’t change the inner circuit at will or the meter maybe out of use.
If there is any problem, contact with us please.
10. Accessories