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GZX92B Insulation Resistance Meter Calibration Device
Product Introduction GZX92B Insulation Resistance Meter Calibration Device is a standard instrument for calibrating insulation resistance meters. The
Product details
Product IntroductionProduct Introduction
The GZX92B insulation resistance meter calibration device is a standard instrument for calibrating insulation resistance meters. The measurement upper limit of the resistor output part (high-voltage high resistance box) is 20G Ω, which is the highest resistance value among similar products in China. This device is designed with an independent leakage shielding terminal button, and there is no obvious instability, short circuit, or open circuit phenomenon during the measurement process.
Product ParametersProduct Parameters
1、 Resistance output (high voltage and high resistance box) section
1. Accuracy level and operating voltage (current) of high-voltage high resistance box
2. Adjustment range: 100 Ω~20G Ω; Adjustment fineness: 100 Ω
3. Environmental conditions for use
●Reference temperature range: 20-25 ℃
●Nominal operating temperature range: 18-28 ℃
●Nominal humidity range: 25% to 75%
4. Variation limit: The variation caused by a change in a single influencing variable under reference conditions
*A is the accuracy level of the high-voltage high resistance box resistor disk.
5. Insulation resistance: The insulation resistance between the circuit of a high voltage and high resistance box and any other external metal without electrical connection to the circuit, measured at nominal voltage, shall not be less than 5T Ω.
6. Insulation strength: The circuit of the high voltage and high resistance box should be able to withstand an actual sine AC voltage of 6kV 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 end of the high-voltage high resistance box should be less than 0.5 Ω, and its variation should be less than 0.05 Ω
8. Device dimensions: 442mm × 270mm × 145mm
9. Device weight: 5kg
2、 Voltage measurement section (high-voltage DC digital voltmeter)
1. Accuracy level and operating voltage (current) of high-voltage high resistance box
| resistance value | 10GΩ | ×1GΩ | ×100MΩ | ×10MΩ | ×1MΩ |
| accuracy class | 2 | 2 | 1 | 0.5 | 0.2 |
| Nominal voltage (V) | 2500 | 2500 | 2500 | 1500 | 800 |
| resistance value | ×100kΩ | ×10kΩ | ×1kΩ | ×100Ω |
| accuracy class | 0.2 | 0.2 | 0.2 | 0.2 |
| Nominal current (mA) | 1 | 8 | 20 | 50 |
3. Environmental conditions for use
●Reference temperature range: 20-25 ℃
●Nominal operating temperature range: 18-28 ℃
●Nominal humidity range: 25% to 75%
4. Variation limit: The variation caused by a change in a single influencing variable under reference conditions
| Influence quantity | Nominal usage range | Permitted variation |
| ambient temperature | 18～28℃ | a/2 % |
| relative humidity | 25%～75% | ≤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 a high voltage and high resistance box and any other external metal without electrical connection to the circuit, measured at nominal voltage, shall not be less than 5T Ω.
6. Insulation strength: The circuit of the high voltage and high resistance box should be able to withstand an actual sine AC voltage of 6kV 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 end of the high-voltage high resistance box should be less than 0.5 Ω, and its variation should be less than 0.05 Ω
8. Device dimensions: 442mm × 270mm × 145mm
9. Device weight: 5kg
2、 Voltage measurement section (high-voltage DC digital voltmeter)
Measurement range: 0-3000V
●Resolution: 1V
●Accuracy: ± (1% reading ± 1 word)
●Reading stability: ≤± 1 word
●Input resistance: ≥ 5G Ω
●The peak voltage measurement circuit meets the requirements of Figure 3 in the JJG622-97 Insulation Resistance Meter Verification Regulations.
●Resolution: 1V
●Accuracy: ± (1% reading ± 1 word)
●Reading stability: ≤± 1 word
●Input resistance: ≥ 5G Ω
●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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