ETCR3900 Exclusive Use of Lightning Protection Standard Resistance-etcr
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ETCR3900 Exclusive Use of Lightning Protection Standard Resistance

Product Characteristics

1. Used for calibration of grounding resistance tester, equipotential tester and other instrument.

2.Range ：0.001Ω~100KΩ

3. Connection Wire Method: 4-wire method

ETCR3900  exclusive use of lightning protection standard resistance  for lightning protection consists of 9 1 / 2W high-precision military-grade wire-wound resistors. When the resistor is calibrated, the gear shift test is performed directly without the need to replace the test wire. The stable performance and sturdy structure make the calibration test particularly convenient. The military-grade wire-wound resistors used have the highest accuracy of 0.05%, and their resistance values include 1mΩ, 10mΩ, 100mΩ, 1Ω, 10Ω, 100Ω, 1KΩ, and 100KΩ. They fully meet the requirements of National Meteorological Administration Order 31 [Lightning Protection Device Testing Qualification Management Measures] 10-3 ～ 105Ω range. This standard resistance is mainly used for calibration of ground resistance tester, equipotential tester and other instruments. Widely used in building quality inspection stations, supervision companies, construction units, lightning protection companies, power departments, etc.
 Function  Used for calibration of grounding resistance tester, equipotential tester and other instrument
 Range and Accuracy  0.001Ω；      2%
 0.01Ω；       0.5%
 0.1Ω；        0.2%
 1.0Ω；        0.2%
 10Ω；         0.05%
 100Ω；        0.05%
 1KΩ；         0.05%
 10KΩ；        0.05%
 100KΩ；       0.05%
 Connection Wire Method  4-wire method
 Power  1/2W
 Temperature Coefficient  ±25ppm
 Dimension  173mmX125mmX70mm
 Weight  360g
 Test Line  Red 0.5m & black 0.5m, each with 2pcs
 Working Temperature and Humidity   -10℃～40℃；70%rh below
 Storage Temperature and Humidity   -20℃～60℃；80%rh below
 Insulation Resistance  10MΩ above(between the circuit and shell 500V)
 Withstand Voltage  AC 3700V/rms(between the circuit and shell)
 Suitable Safety Standard  IEC61010-1，CAT Ⅲ 600V，Polluted Gradation

Meter  1 pcs 
Test line（rad 2 pcs，black 2pcs ） 4 pcs 
Instrument package 1 pcs 
Manual , Warranty Card ,Certificate 1 pcs 


ETCR3900 Catalog
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