1、 Overview this instrument is developed and produced according to jjg622-1997 verification regulation of insulation resistance meter, jjg005-2005 verification regulation of electronic insulation resistance meter, jjg690-2000 high insulation resistance (megger) measuring instrument and jjg1072-2011 verification regulation of DC high voltage high value resistor
The instrument is designed with independent leakage * terminal button and grounding terminal button
It can not only be used to verify the standards of various types of imported and domestic analog and electronic insulation resistance meters and insulation resistance testers, as well as the open circuit voltage, median voltage and peak voltage of insulation resistance meters
In order to broaden the scope of application, the device can partially meet the needs of verifying the megger, and the resistance output terminal button and voltage measurement terminal button for verifying the megger are added, The resistance measurement range is expanded
It can be used as DC standard high value resistor
It has long technical life and mechanical life
2、 Main technical parameters 1 Accuracy level and working voltage (current) 1
1 Resistance output part 1
1 1 Adjustable resistance (common resistance) part ,
| blocking , Value | & times; 10GΩ td> | × 1GΩ td> | × 100MΩ td> | × 10MΩ td> | × 1MΩ Td> |
| accuracy level | 5 | 2 | 1 | 0 2 | 0 2 |
| nominal voltage | 5000v | 5000V | 5000V | 2500V | 1000V |
| Resistance , Value | & times; 100kΩ td> | × 10kΩ td> | × 1kΩ td> | × 100Ω Td> |
| accuracy level | 0 2 | 0 2 | 0 2 | 0 2 |
| nominal current | 1mA | 5mA | 10mA | 10mA |
1
1
2 fixed resistance part 1
1
2
1 check the insulation resistance meter
| resistance value | 100GΩ Td> |
| accuracy level | 5 |
nominal voltage | 5000V |
1
1
2
2 high insulation resistance tester ,
| blocking , Value | 100g & omega td> | 400GΩ td> | 900GΩ Td> |
| accuracy level | 5 | 5 | 5 |
| Nominal voltage | 1000V | 1000V | 1000V |
2 Adjustment range 2
1 When used as the standard for checking insulation resistance meter, the adjustment range is 100 & omega; ~ 200GΩ 2
2 when used as the standard of high insulation resistance tester, the adjustment range is 1K & omega; ~ 1TΩ 3
Voltage Measurement Section 3
1 Range of insulation resistance meter: 1kV DC, 5kV DC , Measuring range of high insulation resistance tester: 100V DC, 1kV DC3 2 Accuracy: & plusmn; 1% reading & plusmn; 0
2% fullness 3
3 Show , Display: four and a half bit, liquid crystal display 3
4 Power supply: DC 9 v3 5 Input resistance: & Ge; 10GΩ 3
6 the peak voltage measurement circuit shall meet the requirements of Figure 3 in jjg622-1997 verification regulation