Gzx92a insulation resistance meter verification device

Verification device I of gzx92a insulation resistance meter Overview insulation resistance meter (megohmmeter) is a national compulsory verification measuring instrument, and its verification regulation is jjg622-89
The main standards of the verification device are high-voltage high resistance box and high-voltage voltmeter
Gzx92a insulation resistance meter verification device combines high-voltage high resistance box (high resistance output part) and high-voltage digital voltmeter (voltage input part) is integrated
The measurement upper limit of resistance output part in the verification device is 200g & omega; and the nominal working voltage is 5kV
The device is designed with independent leakage * terminal button and grounding terminal button, without obvious instability, short circuit and open circuit during the measurement
It meets the requirements of jjg622-97 verification regulation of insulation resistance meter and jjg166-93 verification regulation of DC resistor It is used for the verification of various types of pointer insulation resistance meters
The patented rolling high-voltage switch is selected as the resistance output part of the verification device, which can still meet the requirements of the verification regulation after 100000 times of use
It has long technical life and mechanical life
The nominal measured voltage of the voltage measuring part in the verification device is 5kV, and the input impedance ≥ 10GΩ。 The device can measure the open circuit voltage, median voltage and peak voltage of the megger
2、 Main technical parameters 1 Resistance output (high voltage high resistance box) part 1
1 accuracy grade and working voltage (current) of resistance output part

resistance value	100GΩ	× 10GΩ	× 1GΩ	× 100MΩ	× 10MΩ	× 1MΩ
accuracy level	5	5	2	1	0 5	0 2
nominal voltage	5000v	5000v	5000V	5000V	2500V	1000V

resistance	& times; 100kΩ	× 10kΩ	× 1kΩ	× 100Ω
accuracy level	0 2	0 2	0 2	0 2
nominal current	1mA	8Ma	20mA	50mA

1
2 adjustment range: 100 & omega; ~ 200GΩ, Adjust the fineness to 100 & omega;