1. Overview
Overview
This instrument is developed and produced in accordance with relevant documents such as the verification procedures for insulation resistance meters, the verification procedures for electronic insulation resistance meters, and the verification procedures for DC high-voltage high-value resistors. 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 insulation resistance meters, digital insulation resistance meters, and insulation resistance testers, but also can be used as a DC standard high-value resistor. It has a long technical life and mechanical life.
Resistance measurement range~, adjust the fineness.
The voltage measurement range is ~. It can measure the open circuit voltage, median voltage and peak voltage of the insulation resistance meter.
. Accuracy level and operating voltage (current) of the resistor output part
Resistance value
Accuracy Level
Nominal voltage
Resistance
Accuracy level
Nominal voltage\current
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2. Main
Main
Technology
Technology
Parameter
Parameter
Resistance output (high voltage and high resistance box) part
. Adjustment range ~, adjustment fineness
. Operating environment conditions
Reference temperature range ℃ ~ ℃
Nominal operating temperature range ℃ ~℃
Reference humidity range %~%
Nominal operating humidity range %~%
. Insulation resistance
The circuit of the resistance output part of the calibration device, which is not electrically connected to the circuit The insulation resistance between any other external metals, measured at nominal voltage, is not less than.
. 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 sinusoidal AC voltage with a frequency of ~ and test for a long time without breakdown. and arcing phenomenon.
. The residual resistance at the output end of the resistance output part of the calibration device should be <, and its deterioration should be <.
. Dimensions
. Weight＜
Voltage measurement (high voltage DC digital voltmeter) part
. Measuring range~
. Accuracy (reading.% full scale)
. Power supply
. Four-and-a-half-digit display, liquid crystal display
. Input resistance
. The peak voltage measurement circuit meets the requirements of the figure in the insulation resistance meter verification regulations.
GZX92F insulation resistance meter calibration device