1.
Overview
This instrument is based on the calibration regulations for insulation resistance meters, the calibration regulations for electronic insulation resistance meters, the calibration regulations for high insulation resistance (high resistance meters) measuring instruments, and the calibration regulations for DC high-voltage high-value resistors. Document development and production. The instrument is designed with independent leakage shielding terminals and grounding terminals. 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, this device can Partially meeting the needs of calibrating high-resistance meters, the resistance output terminal and voltage measurement terminal for calibrating high-resistance meters have been added, and the resistance measurement range has been expanded. Can be used as a DC standard high value resistor. It has a long technical life and mechanical life.
2.
Main technical parameters
. Accuracy level and operating voltage (current)
. Resistor output part
Adjustable resistance (shared resistance) part
Resistance value
Accuracy level
Nominal voltage
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Resistance value
Accuracy level
Nominal current
Fixed resistance part
. Check the insulation resistance meter
Resistance value
Accuracy level
Nominal voltage
. High insulation resistance measuring instrument
Resistance
Accuracy level
Nominal voltage
. Adjustment range
. When used as a standard to check insulation resistance meter, the adjustment range is ~
. Used to check high insulation resistance When the measuring instrument is standard, the adjustment range is~
Voltage measurement part
. Check the range of the insulation resistance meter
Check the range of the insulation resistance meter,
. Accuracy reading. % full scale
. Display four and a half digits, LCD display
. Power supply
. Input resistance
. The peak voltage measurement circuit meets the requirements in the figure in the calibration regulations
Environmental conditions for use
. Reference temperature range ℃～℃
. Nominal operating temperature range ℃～℃
. Reference relative humidity %～%
. Nominal operating humidity range %～%
Insulation resistance
The insulation resistance between the circuit of the resistance output part of the calibration device and any other external metal that is not electrically connected to the circuit shall not be less than the resistance value measured at the nominal voltage.
Insulation strength
The circuit between the resistance output part of the calibration device and the reference ground point for testing should be able to withstand the actual sine wave AC voltage with a frequency of ~ and last for a long time without breakdown or arcing. Phenomenon.
The residual resistance at the output end of the resistor is <, and its deterioration is <.
Dimensions
Weight
GZX92E insulation resistance meter calibration device