INSULATION TESTER INSTUCTION MANUAL
1. Introduction
The digital megohmmeter uses the DC-excited transducer to convert DC 12V to DC high voltage 1000V/2500V. The main
amplifier tests the insulation voltage by the current ratio measurement of traditional megger. The input terminal uses micro-
current to test anti-interference circuit and the output terminal adopts the division function of double integrating digital
voltmeter to process the data conversion. It is characteristic of strong loading capacity, high anti-interference of electric field,
portable operation, wide range, backlight display and so on. It could also be used to test commercial electric power. With its
stable performance and high grade appearance, it is widely used to test the insulated voltage resistance for electrical equipment,
instrumentation, cables and so on.
2. Appearance Description
1.2.3.4. Voltage Selection Switch (It includes
AC750V/200M/ 2GΩ/20GΩ
)
5. Voltage Selection Switch (
1000V/2500V
) (except AC750V)
6. Power Switch: Self-locking power switch (POWER).
7. High voltage indication: LED display.
8. Test Switch
9. LCD display: display the measuring value and unit symbol.
10. Instrument mode
11. L: jack for circuit under test.
12. G: Protection jack. When the object under test is requested to add
the protection ring to eliminate leakage effects, the electrode wire
of protection ring should be connected to "G" jack.
13. ACV: Input end for AC voltage measurement.
14. E: Jack for object under test.
15. Power adapter jack
（
）.
3. Technical Features
3.1. General Features
(1) Display: 84.8×59.8mm LCD display. The max display “1999”.
(2) Over range indication: the MSD shows "1" when it is over ranged.
(3) Alarm function: the meter will alarm automatically when the tested resistance is below the lower range and the reading is
invalid.
(4) Power supply: #5 batteries LR6 (1.5) ×8.
(5) Low battery indication:
“
”
displays
(6) Operation environment: temperature 0
～
40
℃
，
30% R.H- 85% R.H
(7) Weight: Approx. 630g (including batteries)
3.2 Technical index
Basic function
Range
Basic accuracy
Output Voltage
1000V/2500V
±10%
Short-circuit current
<4mA
√
Insulated Resistance 1000V
200MΩ:6.0-199.9MΩ
±(5%±5 digit
）
2GΩ:0.06-1.999GΩ
±(5%±5 digit
）
20GΩ:0.6-19.99GΩ
±(5%±5 digit
）
Insulated Resistance 2500V
200MΩ:5-199.9MΩ
±(5%±5 digit
）
2GΩ:0.05-1.999GΩ
±(5%±5 digit
）
20GΩ:0.5-19.99GΩ
±(5%±5 digit
）
200GΩ:5.0-199.9GΩ
±(5%±5 digit
）
Voltage Measurement
AC750V
±
（
1% +6 digit
）
Jack Position
Insulated Resistance: L
、
E AC750V: ACV G
ACV750V input impedance: 1MΩ.
15
