Grounding Resistance Tester Earth Resistance Tester
- Wrindu
- RD3000B
The RD3000B ground resistance tester is designed and manufactured specifically for the on-site measurement of ground resistance, soil resistivity, ground voltage, and AC voltage in combination with the new lightning protection ground resistance test standard.
The test current reaches 20mA, using digital and micro-processing technology. Precise 4-wire method, 3-wire method, and simple 2-wire method for measuring ground resistance. Introduced FFT (Fast Fourier Transform) technology and AFC (Automatic Frequency Control) technology to automatically identify interference and select the measurement frequency to minimize the impact of interference. Provide More accurate grounding resistance.
Our Earth Resistance Tester has unique anti-interference ability and environmental adaptability, and it has good consistency in repeated tests to ensure high accuracy, high stability and high reliability of long-term measurement. The ground resistance meter is widely used in power, telecommunications, meteorology, oil fields, construction, lightning protection and industrial electrical equipment, such as ground resistance, soil resistivity, ground voltage, AC voltage measurement
Features
Special toolbox design for mainframe, Ground Resistance Tester using polypropylene plastic as raw material, one-time injection molding with new compound filler, low density, strength,
stiffness, hardness, abrasion resistance, heat resistance and insulation performance are superior.
Its box can withstand The pressure of about 200kg ensures high accuracy, high stability and high reliability in various environmental tests.
The host's large LCD display with backlight and bar graph indication is clear at a glance.
Ground Resistance Tester can store 2000 sets of data. Through the data software, functions such as reading, checking, saving, reporting, and printing of historical data can be realized.
Application
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Parameters
Function | Ground resistance, soil resistivity test; ground voltage, AC voltage test |
Power source | DC 7.4V 1.8Ah rechargeable lithium battery, the battery is full of about 8.4V |
Backlight | Controllable white screen backlight, suitable for dark places |
Measurement method | Precision 4-wire, 3-wire measurement, simple 2-wire measurement of ground resistance |
Measurement method | Grounding resistance: rated current changing pole method, measuring current 20mA Max |
Soil resistivity: four-pole method (Winner method) | |
Voltage to ground: average rectification (between P (S) -ES interface) | |
Measuring range | Measure the ground resistance (R) with two, three and four wires: 0.000Ω ～ 30000Ω |
Soil resistivity (ρ): 0.00Ωm ～ 9000kΩm | |
Ground voltage: AC 0.0 ～ 100.0V | |
Maximum resolution | Two, three or four wire method for measuring ground resistance (R): 0.001Ω |
Soil resistivity (ρ): 0.01Ωm | |
Ground voltage: 0.1V | |
Precision | Two, three and four wire method for measuring grounding resistance (R): ± 2% rdg ± 5dgt (0.000Ω ～ 29.999Ω) ± 2% rdg ± 3dgt (30.00Ω ～ 2999.9Ω) ± 4% rdg ± 3dgt (3000Ω ～ 30000Ω) |
Soil resistivity (ρ): according to the measurement accuracy of R (Ρ = 2πaR a: 1 m ～ 100m; π = 3.14) | |
Ground voltage: ± 2% rdg ± 3dgt | |
Note: 1. The additional error at rC max or rP max is ≤ ± 5% rdg ± 5dgt. (rC max: 4kΩ + 100R ＜ 50kΩ, rP max: 4kΩ + 100R ＜ 50kΩ) 2. The additional error at 5V interference voltage is ≤ ± 5% rdg ± 5dgt. | |
Test voltage waveform | sine wave |
Test frequency | 128Hz / 111Hz / 105Hz / 94Hz (automatic frequency selection) |
Short-circuit test current | AC 20mA max |
Open circuit test voltage | AC 40V max |
Electrode distance range | 1m～100m |
Gear shifting | Ground resistance: 0.000Ω ～ 30000Ω Full automatic shift |
Soil resistivity: 0.00Ωm ～ 9000kΩm Full automatic shift | |
LCD | LCD 6-digit LCD display, white screen backlight |
LCD size | 128mm×75mm |
LCD display field | 124mm×67mm |
Measurement indication | LED flashing indication during measurement, LCD countdown, progress bar graph indication |
Charging indicator | The indicator light on the charger is red when charging, and green when fully charged |
Size | Instrument size: 320mm × 275mm × 145mm |
Outer package size: 400mm × 245mm × 335mm | |
standard test leads | 4 standard test leads: 20m for red, 20m for black, 10m for yellow, 10m for green |
simple test lines | 2 simple test lines: 1.6m each for red, 1.6m each for black |
auxiliary ground rods | 4 strings: φ10mm × 150mm |
Measurement time | Voltage to ground: about 2 times / second; ground resistance: about 7 seconds / time; soil resistivity: about 7 seconds / time |
Measurement times | 5000 times or more (short-circuit test, measure once, stop for 30 seconds and then measure) |
Line voltage | AC 600V or less |
Communication interface | With RS232 interface, the stored data can be uploaded to a computer, saved and printed |
Communication line | 1 string RS232 communication line, 1.5m long |
Data hold | "HOLD" symbol indicates when data is held |
Data storage | 2000 sets, "MEM" storage indication, "FULL" indicates that the storage is full |
Data review | "READ" symbol indication when reviewing data |
Overflow display | "OL" symbol indication when overrange overflow |
Interference test | Automatic recognition of interference signals, interference voltage is higher than 5V "NOISE" symbol indicates |
Auxiliary ground test | With auxiliary ground resistance value test function, 0.00kΩ ～ 30000Ω (100R + rC <50kΩ, 100R + rP <50kΩ) |
Alarm function | When the measured value exceeds the alarm set value, “beep--beep--beep--” alarm prompts |
Battery voltage | When the battery voltage is low, the low battery voltage symbol is displayed to remind you to charge the battery. |
Auto power off | Auto power off 15 minutes after power on |
Working current | Standby: 25mA Max (backlight off); Backlight: 25mA Max (backlight power consumption alone); Measurement: 150mA Max (backlight off) |
Quality | instrument: 2.66kg (including battery) |
Total weight: 6.88kg (including packaging) | |
Tool box | Military tool box design, can bear 200kg |
Working temperature and humidity | -10 ℃ ～ 40 ℃; below 80% rh |
Storage temperature and humidity | -20 ℃ ～ 60 ℃; below 70% rh |
Overload protection | Measurement of ground resistance: AC 280V / 3 seconds between each port of C (H) -E, P (S) -ES |
Insulation resistance | above 20MΩ (500V between circuit and case) |
Withstand voltage | AC 3700V / rms (between circuit and case) |
Protection class | IP54 |
Electromagnetic characteristics | IEC61326(EMC) |
Suitable for safety regulations | IEC61326 (EMC) IEC61010-1 (CAT III 300V, CAT IV 150V, pollution degree 2); IEC61010-031; IEC61557-1 (ground resistance); IEC61557-5 (soil resistivity); JJG 366-2004 (ground resistance table. |
