Ground Resistance Tester Calibrator Lightning Protection Standard Resistance

Description

Ground Resistance Tester Calibrator Lightning Protection Standard Resistance
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 1m
Ω
, 10m
Ω
, 100m
Ω
, 1
Ω
, 10
Ω
, 100
Ω
, 1K
Ω
, and 100K
Ω
. They fully meet the requirements of National Meteorological Administration Order 31 [Lightning Protection Device Testing Qualification Management Measures] 10-3
～
105
Ω
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.
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
Specification:
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
Packing :
Meter
1 pcs
Test line
（
rad 2 pcs
，
black 2pcs
）
4 pcs
Instrument package
1 pcs
Manual , Warranty Card ,Certificate
1 pcs