JDB-2 Ground Resistance Meter Verification Device

I. Overview
The ground resistance meter is a safety instrument manufactured based on the principle of potential compensation. It is easy to operate and portable, widely used for measuring the grounding resistance of single grounding bodies and centralized grounding bodies. The measurement of grounding resistance is an important measure for monitoring grounding quality and ensuring electrical safety.
The national verification regulation for ground resistance meters is JJG366-2004 Verification Regulation for Ground Resistance Meters.
The JDB-2 Ground Resistance Meter Verification Device is a standard instrument for verifying ground resistance meters, fully compliant with the requirements of JJG366-2004 for standard devices. It can verify various accuracy grades and models of analog and digital ground resistance meters. It must not be used for the verification of ground continuity resistance meters (operating current AC25A). It can also be used as a resistance box, with a starting resistance of 10mΩ and a resolution of 1mΩ.
II. Main Technical Specifications
2.1 Resistance output range: 0.010Ω to 20001.110Ω; Minimum resolution: 1mΩ.
2.2 Simulated ground resistance rE (standard resistor)

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

2.4 Operating environment: Temperature 20℃±5℃; Relative humidity 40% to 75% RH
2.5 Weight <2.5kg
2.6 Dimensions 368mm×164mm×110mm