This insulation resistance meter calibration device is mainly used to calibrate various types of insulation resistance meters with rated voltage ≤ 10kV, and can also be used as a standard instrument in the production and repair of insulation resistance meters. The resistor part can be used separately. The digital meter can measure a maximum DC voltage of 10000V.
The main technical performance of this verification device is as follows:
(1) Standard Number Table
1. Measurement range: Voltage range: 0-10000V
2. Basic error:
| DC voltage U |
≤1000V： ±(0.4% reading+0.1% full degree)
>1000V： ±(0.5% reading+0.5% full degree) |
| Peak Voltage (Uf) |
≤1000V： ±(1% reading+0.5% full degree)
>1000V： ±(0.5% reading+0.5% full degree) |
3. The response time of the digital meter is about 25 seconds.
（2） Standard resistor
1. A standard resistor consists of a string of 900G fixed resistors and nine resistor disks, namely: 100G Ω+2 × 200G Ω+400G Ω+9 × (104+103+102) M Ω+10 (10+1+0.1+0.01+0.001+0.0001) M Ω, with a resistance range of 0-1000011.1110 M Ω, a minimum step of 100 Ω, and a maximum withstand voltage of 10kV.
| Decimal disc resistance |
Fixed resistors |
×10000
MΩ |
×1000
MΩ |
×100
MΩ |
×10
MΩ |
×1
MΩ |
×0.1
MΩ |
×10
kΩ |
×1
kΩ |
×0.1
kΩ |
grade
index |
5 |
2 |
1 |
0.5 |
0.2 |
| The maximum voltage and current can be used |
10kV |
5000V |
2500V |
500V |
8 mA |
20 mA |
50 mA |
2. The level index and maximum operating voltage or current of each ten inch disk
3. The residual resistance value is less than 1 Ω, and the variation is not greater than 0.1 Ω.
4. Environmental reference conditions: 20+2-3 ℃, relative humidity: 50% ± 10%
5. Nominal operating environment: temperature 23 ± 5 ℃, relative humidity 25% to 60%.
6. The insulation resistance of the circuit to the shell is ≥ 1 × 1011 Ω.
7. Power supply voltage: AC220V 50HZ.
8. Dimensions: 600mm × 323mm × 220mm.
9. Weight: Approximately 10kg.
