ETCR3900 Exclusive Use of Lightning Protection Standard Resistance 0.001O~100KO

ETCR3900 Exclusive Use of Lightning Protection Standard Resistance 0.001O~100KO
Notice:
  The standard package don't include batteries.Because,the international air shipping forbid to ship liquid,powder and batteries,we can not put them in the package box.Hope you can understand buy them in your local store or supermarket.
At the same time, please forgive us that we are unable to provide the English user manual. If you need it, please contact the customer service after purchase.
Thanks for your support!
Product Main Function
1. Used for calibration of grounding resistance tester, equipotential tester and other instrument.
2.Range : 0.001O~100KO
3. Connection Wire Method: 4-wire method
ETCR3900 Special Standard Resistance For Lightning Protection is composed of 9 pieces 1/2w high-precision military-grade wire-wound resistors. When calibrating resistors, direct shift and test without replacing the test line. The performance is stable and the structure is solid, especially convenient for calibration test. adopt military-grade wire wound resistor which the highest accuracy of 0.05%, the resistance value including 1mO, 10mO and 100mO, 1O, 10O, 100O , 1kO, 100kO fully meet the national weather service 31 order "lightning protection device detection qualification management approach" specified in the range of 103 ~ 105 O. This standard resistance is mainly used for calibration of ground resistance tester, equipotential tester and other instruments. It is widely used in building quality inspection station, supervision company, construction company, lightning protection company, electric power department, etc.
Technical Parameter
Function Description
Function  Used for calibration of grounding resistance tester, equipotential tester and other instrument
 Range and Accuracy  0.001O,      2%
 0.01O,       0.5%
 0.1O,        0.2%
 1.0O,        0.2%
 10O,         0.05%
 100O,      0.05%
 1KO,         0.05%
 10KO,       0.05%
 100KO,       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  10MO above(between the circuit and shell 500V)
 Withstand Voltage  AC 3700V/rms(between the circuit and shell)
 Suitable Safety Standard  IEC61010-1,CATIII 600V, Polluted Gradation
Meter  1 pcs 
Test line(red 2 pcs,black 2pcs ) 4 pcs 
Instrument package 1 pcs 
Manual , Warranty Card ,Certificate 1 pcs