Foreword

1. It is a must to confirm the instrument is connected to ground!! Because the instrument testing of high voltage, high output, measured object is often with the power frequency leakage or induction on the interference of high voltage electric energy, the energy could be enough to cause danger to the personal and equipment safety!!

2. Please don't use artificial discharge to check the instrument!! After the test is finished,you should also wait for the automatic discharge of the instrument, the voltage meter is back to zero, then you can use artificial discharge ! Because the short-circuit spark discharge of strong electric pulse wave if fleeing into the instrument, it is integrated circuit damage the instrument!!

Overview

Digital Insulation resistance tester embedded real-time industrial microcomputer operating system, ultra-thin wire-shaped sheets header with the perfect combination of dot matrix liquid crystal display, the instrument is with a variety of voltage output level (250V,500V, 1000V, 2500V, 5000V, 10000V,15000V, 20000V), high capacity, strong anti-interference, simple operation, automatic calculation of various insulation index (absorption ratio, polarization index), all measured characteristics with the anti-power-down function . It is suitable for measuring high capacity transformers, transformers, generators, high voltage electric motors, power capacitors, power cables, surge arresters and other ideal insulation resistance test equipment.

Advantage

1.It has the ability of strong electric field induction anti interference , anti interference is up to 2mA (50Hz), it can be used to measure insulation resistance of 500000 volt substation without disconnection.

2.Short-circuit current, >5mA, max short circuit of 15mA. To adapt to the large capacity, high inductance test, as well as the need for strong interference.

3.Wide resistance measurement:0.5MΩ～200GΩ (Range of Model no.GM-15kV、GM-20kV: 2000GΩ），accuracy of reading and good resolution.

4.Wide measurement voltage: 0.25, 0.5, 1, 2.5, 5, 10, 20kV for optional, it can be also available adjusting from 0 V smooth tone to the required voltage continously.

5.It has time time keeping function, it is convenient for user  to record/ analysis s absorption ratio and polarization index.

Specification & Technical Parameter

1.Specification

Test voltage can be continously adjusted from 0 volts smooth to the required value.

1.Measurement range & accuracy

  * MΩ: 0.5kV calibration

   GΩ: 2.5kV calibration

   Resistance measurement accuracy of the test voltage range: more than

   20% voltage range nominal value.

   When test voltage is above 8kV, in order to test accurately resistance of

   above 20GΩ, high-voltage electrode conductor exposed in the air should

   be shielded, to avoid impact air ionization.

2.Anti interference: 2mA(50/60Hz)

3.Timekeeping, alarm function: the stopwatch display the maximum value is 19 minutes   

and 59 seconds. 20 minutes in cycle. Sound report for 15 seconds, 60 seconds, every

minute. To report to awaken, resistance readings for 5 seconds, the measured

resistance is lower than the lower limit of the range, reading is invalid in a continuous

sound alarm.

4.Display: 3 pieces of three and a half LCD digital meters, showing test voltage,

resistance, time respectively.

5.Power supply: 1.2V/2000mAh Ni-MH rechargeable battery 10 pieces, total DC12V; AC

220V (50/60Hz) for recharging.

6.Working environment: temperature: 0 ~ 40 ℃, relative humidity: 20 ~ 90%

7.Dimension: 315 * 240 * 155mm,

8.Net weight:5kg

Principle

The equivalent of the traditional shake table flow insulation ratio method of measuring resistance by using the instrument, it makes an ohmic -- digital conversion to double-integrating digital voltage meter division function, the technology has very high anti-interference ability, can make ohmic readings during the test voltage is substantially low frequency interference wave.

The test voltage 0-5-10-20kV is generated by the feedback it excited DC voltage converter circuit. The test voltage is high, with automatic adjustment ability strong and the meter has the ability to not generally similar instrument anti-interference.

Accessaries

1.Host...................................................................1unit

2.HV Cable...........................................................1 unit

3.Connection wire.................................................3 units

4.Power supply cable...........................................1 unit

5.Reference resistor（100MΩ、1GΩ、10GΩ）..1 unit each

6.Storge bag.........................................................1 unit

7.Operating manual..............................................1 unit

8.Calibration.........................................................1 unit