| Model |
GDCR-3000B Digital Earth Resistance Tester, Grounding Resistance Tester |
| Function |
Earth resistance measurement, Earth voltage measurement, Low resistance measurement |
| Power Supply |
DC 9V (Zi-Mn dry battery R14S 1.5V 6 PCS, continuous standby for 300 hours ) |
| Measuring Mode |
Precise 3-pole measurement, simple 2-pole measurement |
| Measuring Method |
Earth ground resistance: constant current change-pole method, measurement current 3mA Max, 820Hz; Voltage to ground: average value rectification |
| Data Mode |
Average value, maximum, minimum |
| Wire Resistance Verification |
Avoid error caused by testing wire such as failed to be fully inserted into tester interface or by poor contact or by user' s replacing or lengthening testing wires, making it more accurate for earth ground resistance measurement. |
| Display Mode |
4-digital super-large LCD display, blue screen backlight, LCD dimension: 128mm×75mm; Display field:124mm×67mm |
| Measuring Indication |
During measurement, LED flash indicator, LCD count down display |
| Earth Ground Resistance |
Range:0.01Ω~2000Ω; Resolution:0.01Ω;Accuracy:±1%rdg±3dgt |
| Earth Ground Voltage |
Range:0V~600V AC; Resolution:1V;Accuracy:±1%rdg±3dgt |
| Dimension |
LWH:215mm×190mm×95mm |
| Testing Wires |
Three wires: each for Red 20m, Yellow 10m, and Green 5m |
| Simple Testing Wire |
2 wires: each for Red 1.5m and Green 1.5m |
| Auxiliary Earthing Rod |
2 PCS: Φ10mm×150mm |
| Measuring Rate |
Earth voltage measurement: 3 times/second; Earth resistance: 5 seconds/time |
| Measuring Times |
Over 5000 times (20Ω range measuring 10Ω for one time and repeat after 25 seconds) |
| Circuit Voltage |
Measuring voltage to ground: measuring below AC 600V |
| RS232 Interface |
Possess RS232 interface, software supervision, storage data can be uploaded to computer, preserved and printed. |
| Communication Wire |
One piece of RS232 communication wire, with length 1.5m |
| Data Storage |
400 sets, flash display "FULL"icon to indicate storage is full |
| Data Hold |
Data hold function: "HOLD"icon display |
| Data Read |
Data read function: "READ" icon display |
| Overflow Display |
Exceeding measuring range overflow function: "OL"icon display |
| Alarm Function |
When measuring value exceeds alarm setting value, there is "Toot-toot-toot" alarm hint |
| Battery Voltage |
When battery voltage decreases to about 7.8V, battery voltage low icon " "will display, reminding to replace battery. |
| Power Consumption |
Backlight: 25mA Max;Standby: 25mA Max(Backlight shut off);Measurement:70mA Max(Backlight shut off) |
| Weight |
1443g(with batteries) |
| Working Environment |
-10ºC~40ºC;below 80%rh |
| Storage Environment |
-20ºC~60ºC, below 70%rh |
| Overload Protection |
Measuring earth ground resistance: between each interfaces of E-P,E-C, AC 280V/3s |
| Insulation Resistance |
Over 10MΩ(between circuit and enclosure it is 500V) |
| Withstanding Voltage |
AC 3700V/rms (Between circuit and enclosure) |
| Electromagnetic Features |
IEC61010-4-3,Wireless frequency electromagnetic field≤1V/m |
| Protection Type |
IEC61010-1,IEC1010-2-31,IEC61557-1,5,IEC60529(IP54),CAT III300V,Pollution etc. |
| Accessories |
Tester: 1PC; Earthing Rod: 2PCS; Testing Wire: 3PCS; Simple testing wire: 2PCS; RS232 Com-cable: 1PC; Software disk: 1PC; Tester bag: 1PC |
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