JDB-2 Grounding resistance meter calibration deviceDetailed product description：

JDB-2 Grounding Resistance Meter Calibration Device

1. Overview
The grounding resistance meter calibration device is a safety instrument produced based on the principle of potential compensation. It is easy to operate and portable, widely used for measuring the grounding resistance of individual grounding bodies and centralized grounding bodies. The measurement of grounding resistance is an important measure to monitor grounding quality and ensure electrical safety.
The national verification regulation for grounding resistance meters is JJG366-2004 Verification Regulation for Grounding Resistance Meters.
The JDB-2 grounding resistance meter calibration device is a standard instrument for calibrating grounding resistance meters, fully complying with the requirements of JJG366-2004 for standard instruments. It can calibrate various accuracy levels and models of analog and digital grounding resistance meters. It is not allowed to be used for the calibration of grounding resistance meters (working current of AC25A). It can be used as a resistance box with a starting resistance of 10m Ω and a resolution of 1m Ω.

2. Main technical indicators:
2.1 Resistance output range: 0.010 Ω~20001.110 Ω; Minimum resolution: 1m Ω.
2.2 Simulated grounding 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 (%) 0.05 0.05 0.1 0.5 1 5 20
2.3 Simulate auxiliary grounding resistance rP, rC (auxiliary grounding resistance)
Resistance (Ω) 0 500 1000 2000 5000
Accuracy (%)<0.1 Ω 2.0 2.0 2.0 2.0
Power rP 1W rC 2W
2.4 Operating environment: temperature 20 ℃± 5 ℃; Relative humidity ranging from 40% to 75%
2.5 Weight ＜ 3kg
2.6 Volume 368mm × 230mm × 140mm