Transformer Ground Resistance Tester
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- Details
Insulation Resistance Tester is widely used in maintenance of electrical equipment intransformer 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 transformer sreactors,capacitors,motors,generators and cables,etc.
1. Microcomputer oontrol,menu operation and LCD screen dot matrix display.
2. Output high voltage of each range can be continuously adjusted from zero.
3. Able to withstand impact of short circuit and residual voltage of the measured capacitance.
4. Maximum resistance measurement range up to 10TΩ,automatic switching range.
5. Automatic measurement of ambient temperature,air humidity and test time.
1. Microcomputer oontrol,menu operation and LCD screen dot matrix display.
2. Output high voltage of each range can be continuously adjusted from zero.
3. Able to withstand impact of short circuit and residual voltage of the measured capacitance.
4. Maximum resistance measurement range up to 10TΩ,automatic switching range.
5. Automatic measurement of ambient temperature,air humidity and test time.
6. Storage of 60 groups of measuring results,and the data will not be ost for 20 years.
| Rated test voltage | GD3126A(5KV) | GD3126B(10kV) | |||||||
| 50V,100V,250 V,500V,1.0kV, 2.5KV,5.0kV | 50V,100V,250 V,500V,1.0kV, 2.5KV,5.0kV,10.0kV | ||||||||
| Output voltage error | ±5% | ||||||||
| Resistance range | Upper limit | 100GQ-10TΩ | 100GΩ-20TΩ | ||||||
| Lower limit | 0.1MΩ | 0.1MΩ | |||||||
| Accuracy | Class 5.0 | ||||||||
| High voltage display error | ±(5% ·Ux+1d) | ||||||||
| Temperature measuring error | ±0.5ºC | ||||||||
| Humidity measuring error | ±2%RH | ||||||||
| Short circuit current | Approx.6mA | ||||||||
| Voltage ripple | <3% | ||||||||
| Insulation resistance | >500 MQ(between test wire and case) | ||||||||
| Withstand voltage | AC10.0kV 50Hz 1min(between test wire and case) | ||||||||
| Power supply | 14.8V lithium battery | ||||||||
| Batter service time after one charging | 30 days 10 times DAR &5 times Pl test per day | ||||||||
| Working temperature and humidity | 0ºC~+40ºC<85%RH | ||||||||
| Storage temperature and humidity | -20ºC~+50ºC<90%RH | ||||||||
| Dimension(mm) | 325(L)*250(W)*130(H) | ||||||||
| Weight | 3.7kg | ||||||||
| Resistance measuring error | |||||||||
| Voltage steps | 50 V | 100 V | 250 V | 500 V | 1.0 kV | 2.5 kV | 5.0 kV | 10.0 kV | |
| ±(3% ·Rx+1d) | 0.2GΩ | 0.4GΩ | 1GΩ | 2GΩ | 4GΩ | 10GΩ | 20GQ | 40GQ | |
| ±(5% ·Rx+1d) | 2GΩ | 4GQ | 10GΩ | 20GQ | 40GQ | 0.1TQ | 0.2TQ | 0.4TΩ | |
| ±(10% ·Rx+2d) | 20GΩ | 40GΩ | 100GΩ | 200GΩ | 0.4TQ | 1TΩ | 2TQ | 4TQ | |
| ±(25% ·Rx+2d) | 100GΩ | 200GΩ | 500GΩ | 1TΩ | 2TQ | 5TΩ | 10TQ | 20TΩ | |
