China Insulation Test Resistance Measuring Instrument

GD3126A Insulation Resistance Tester 5kV

General Information

GD3126A Insulation Resistance Tester is widely used in maintenance of electrical equipment in transformer substation, power plant, etc. It is suitable for carrying out measurement of insulation resistance (IR), absorption ratio (DAR) and polarization index (PI) of all kinds of high voltage equipment, including switchgear, transformers, reactors, capacitors, motors, generators and cables, etc.


FeaturesAdopts microcomputer control, menu operation and large LCD screen dot matrix display with stable performance.Strong anti-interference ability, suitable for measuring in strong electromagnetic interference environment.Large capacity, can meet the requirements of high voltage, high resistance, large capacity load test.With shockproof, moisture-proof and dust-proof structure, adapt to the harsh working environment.User friendly, display accurate results and data change trends.Perfect protection function, able to withstand impact of short circuit and the measured capacitance residual voltage.7 voltage output steps of 50V, 100V, 250 V, 500V, 1.0kV, 2.5kV, 5.0kV.Output high voltage can also be continuously adjusted.Automatic measurement of R15, R60, R600, automatic calculation of absorption ratio, polarization index.Maximum resistance measurement range is 0~10TΩ, automatic switching range.Automatic measurement of ambient temperature, air humidity and test time.Displays the test time, buzz tips at every 15 seconds, 5 minutes without operation will prompt shutdown.Automatically discharge high voltage after measurement is completed, the discharge time is no more than 30 seconds.Storage of 60 groups of measuring results, nonvolatility.With RS232 serial interface, able to data communicate with computer.With external printer, can print measuring results. (optional)Able to detect leakage current Ix and absorption capacitance Cx. (Optional)
Specifications

Rated test voltage stepsGD3126A(5kV)GD3126B(10kV)50V,100V,250 V,500V,1.0kV,2.5kV,5.0kV50V,100V,250 V,500V,1.0kV,2.5kV,5.0kV,10.0kVOutput voltage error±5%Resistance rangeUpper limit100GΩ~10TΩ100GΩ~20TΩLower limit0.1MΩ0.1MΩAccuracy class5.0 class High voltage display error±( 5%•Ux + 1d )Temperature measuring error±0.5ºCHumidity measuring error±2%RHShort circuit currentApprox. 6mAVoltage ripple<3% Insulation resistance> 500 MΩ (between test wire and case)Withstand voltage AC10.0kV 50Hz 1min (between test wire and case)Power supply14.8V lithium batteryBattery service time after one charging30days 10times DAR & 5times PI test per dayWorking temperature and humidity0ºC ~ + 40ºC< 85%RHStorage temperature and humidity- 20ºC ~ + 50ºC < 90%RHDimension (mm)325 (L)*250(W)*130(H)Weight 3.7kgResistance measuring errorVoltage steps50 V100 V250 V500 V1.0 kV 2.5 kV5.0 kV10.0 kV±( 3%·Rx + 1d )0.2GΩ0.4GΩ1GΩ2GΩ4GΩ10GΩ20GΩ40GΩ±( 5%·Rx + 1d )2GΩ4GΩ10GΩ20GΩ40GΩ0.1TΩ0.2TΩ0.4TΩ±( 10%·Rx + 2d )20GΩ40GΩ100GΩ200GΩ0.4TΩ1TΩ2 TΩ4TΩ±( 25%·Rx + 2d )100GΩ200GΩ500GΩ1TΩ2TΩ5TΩ10TΩ20TΩ

Packing List

Insulation resistance tester1 setTest connecting cable for L terminal (Red wire and joint)1 rootTest connecting cable for G terminal (Green wire and joint)1 rootTest connecting cable for E terminal (Black wire and joint)1 root3APower adapter (For printer power supply and instrument charging)1 pcRS232 Serial communication line1 rootPrinter (optional)1 setData transfer software disc (PC communication software)1 pcUser's guide1 copyTest Report1 copy

Panel Structure

1. L terminal socket2. G terminal socket 3. E terminal socket 4. LCD screen
5. Buzzer 6. Temperature & humidity sensor 7. ESC button 8. UP button
9. Contrast knob 10. DOWN button11. OK button
12. High voltage adjusting knob13. RS232 interface 14. Power switch
15. Charging socket