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GZX92A Insulation Resistance Meter Calibration Device
Product Introduction: The insulation resistance meter (megohmmeter) is a national mandatory calibration measuring instrument, and its calibration regu
Product details
Product IntroductionProduct Introduction
Insulation resistance meter (megohmmeter) is a national mandatory calibration measuring instrument, and its calibration regulation is JJG622-97. The main standards for the calibration device are the high-voltage high resistance box and the high-voltage voltmeter. The GZX-92A insulation resistance meter calibration device integrates the high-voltage high resistance box (resistance output part) and the high-voltage digital voltmeter (voltage input part) into one.
Product ParametersProduct Parameters
1、 Resistance output (high voltage and high resistance box) section
1. Accuracy level and operating voltage (current) of the resistor output section
2. Adjustment range: 100 Ω~200G Ω, adjusting fineness to 100 Ω
3. Environmental conditions for use
The variation caused by a change in a single influencing variable under reference conditions
☆ a is the accuracy level of the resistor output part of the verification device's resistor disk (the value of a varies for each resistor disk)
5. Insulation resistance:
8. Dimensions: 442mm × 270mm × 145mm
9. Weight:<5kg
2、 Voltage measurement (high-voltage DC digital voltmeter) section
1. Accuracy level and operating voltage (current) of the resistor output section
| Resistance value | 100GΩ | ×10GΩ | ×1GΩ | ×100MΩ | ×10MΩ |
| accuracy class | 5 | 5 | 2 | 1 | 0.5 |
| Rated voltage | 5000V | 5000V | 5000V | 5000V | 2500V |
| Resistance value | ×1MΩ | ×100kΩ | ×10kΩ | ×1kΩ | ×100Ω |
| accuracy class | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 |
| Nominal current | 1000V | 1mA | 8mA | 20mA | 50mA |
3. Environmental conditions for use
●Reference temperature range: 20-25 ℃
●Nominal operating temperature range: 18-28 ℃
●Reference humidity range: 40% to 60%
●Nominal humidity range: 25% to 70%
4. Resistance variation limit:●Nominal operating temperature range: 18-28 ℃
●Reference humidity range: 40% to 60%
●Nominal humidity range: 25% to 70%
The variation caused by a change in a single influencing variable under reference conditions
| Influence quantity | Nominal usage range | Permitted variation |
| Environmental temperature | 18～28℃ | a/2 % |
| Relative humidity | 25%～70% | ≤10GΩ a/2 % ＞10GΩ a% |
| Working voltage | (1-1/5) nominal voltage | ≤10GΩ a/2 % ＞10GΩ a% |
5. Insulation resistance:
●The insulation resistance between the circuit of the resistor output part in the verification device and any other external metal without electrical connection to the circuit shall be measured at a nominal voltage with a resistance value of not less than 5T Ω.
6. Insulation strength:
●The circuit of the resistor output part in the verification device should be able to withstand an actual sine AC voltage of 11kV with a frequency of 45-65Hz for 1 minute between the test reference grounding point, without breakdown or arcing.
7. The residual resistance at the output terminal of the resistance output part in the verification device should be less than 0.1 Ω, and its variation should be less than 0.01 Ω.8. Dimensions: 442mm × 270mm × 145mm
9. Weight:<5kg
2、 Voltage measurement (high-voltage DC digital voltmeter) section
Measurement range: 0-5000V
●Accuracy: ± (1% reading ± 1 word)
●Power supply: DC9V
●Input resistance: ≥ 10G Ω
●Display: Four and a half digits, LCD display
●The peak voltage measurement circuit meets the requirements of Figure 3 in the JJG622-97 Insulation Resistance Meter Verification Regulations.
●Accuracy: ± (1% reading ± 1 word)
●Power supply: DC9V
●Input resistance: ≥ 10G Ω
●Display: Four and a half digits, LCD display
●The peak voltage measurement circuit meets the requirements of Figure 3 in the JJG622-97 Insulation Resistance Meter Verification Regulations.
Note:
1. The appearance of the product is subject to the actual product. Technical parameters and models are subject to change without prior notice. If there is any act of theft or copying, legal responsibility will be pursued.
2. To learn more about Hertz products, please enter the product center. Service Hotline:
Product featuresProduct Characteristics
●The high-voltage high resistance box consists of eight decimal resistor disks and one fixed resistor
●The switch of the high voltage and high resistance box is a patented rolling high voltage switch, which is a sealed light pressure switch made of special high-strength insulation material
●High insulation resistance, low contact resistance, long service life, and no need for cleaning. The action process of the switch is to first turn on and then turn off, and there will be no open circuit during the measurement process, fully meeting the requirements of Article 15.1.6 of JJG622-97 Insulation Resistance Meter Verification Regulations
●Has relatively complete leakage shielding
●The resistor uses specially designed high stability resistor components with small temperature coefficient, voltage coefficient, and annual variation, ensuring the stability and accuracy of the high-voltage high resistance box
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