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JD-1B ground resistance meter calibration device


The JD-1B ground resistance meter calibration device is a standard instrument for calibrating ground resistance meters. It fully complies with the requirements of JJG366-2004 for standard instruments. It can calibrate analog and digital ground resistance meters of various accuracy levels and models. It shall not be used for the verification of ground conduction resistance meter (working current is AC25A). It can be used as a resistance box with a starting resistance of 10mΩ and a resolution of 1mΩ.

  • Product description
  • 1 Overview

    JD-1B ground resistance meter calibration device is a safety instrument produced based on the principle of potential compensation. It is simple to operate and portable, and is widely used to measure the ground resistance of single grounding bodies and centralized grounding bodies. The measurement of ground resistance is an important measure to monitor the quality of grounding and ensure the safety of electricity.

    The national calibration regulations for ground resistance meters (instruments) are JJG366-2004 Calibration Regulations for Ground Resistance Meters.

    The JD-1B ground resistance meter calibration device is a standard instrument for calibrating ground resistance meters. It fully complies with the requirements of JJG366-2004 for standard instruments. It can calibrate analog and digital ground resistance meters of various accuracy levels and models. It shall not be used for the verification of ground conduction resistance meter (working current is AC25A). It can be used as a resistance box with a starting resistance of 10mΩ and a resolution of 1mΩ.


    2. Main technical indicators:

    2.1 Resistance output range: 0.010Ω~11111.110Ω; minimum resolution: 1mΩ.

    2.2 Analog ground resistance rE (standard resistor)

    Resistance (Ω)

    ×103

    ×102

    ×101

    ×100

    ×10-1

    ×10-2

    ×10-3

    power, current

    0.25W

    0.25W

    0.25W

    0.25W

    0.5A

    0.5A

    0.5A

    Accuracy(%)

    0.1

    0.1

    0.1

    0.1

    0.5

    5

    10

    2.3 Simulate auxiliary ground resistance rP, rC (auxiliary ground resistance)

    Resistance (Ω)

    0

    500

    1000

    2000

    5000

    Accuracy(%)

    <0.1Ω

    2.0

    2.0

    2.0

    2.0

    power

    rP  0.5W   rC  2W

    2.4 Usage environment: temperature 20℃±5℃; relative humidity 40%~75%

    2.5 Weight<3kg

    2.6 Volume 370mm×265×140mm