모델명 : ETCR 3000B
원산지 : 중국
브랜드 : ETCR
Influence Quantity | Base Condition | Working Conditions | Remark |
Ambient Temp | 23℃±1℃ | -10℃-40℃ | ---- |
Ambient Humidity | 40%-60% | ＜80% | ---- |
Working Voltage | 9V±0.1V | 9V±1.5V | rC、rP |
Auxiliary Earth Resistance | ＜100Ω | ＜30kΩ | ---- |
Interference Voltage | no | ＜20V | ---- |
Interference Current | no | ＜2A | |
Electrode Distance when measuring R | a＞5d | a＞5d | ---- |
Electrode Distance when measuring ρ | a＞20h | a＞20h | ---- |
Function | Measurement of 2/3/4-pole earth resistance, soil resistivity, earth voltage, AC voltage |
Power Supply | DC 9V(Zi-Mn dry battery R14S 1.5V 6 PCS, continuous standby for 300 hours ) |
Measurement Range | Earth Resistance: 0.00Ω-30.00kΩ |
Soil Resistivity: 0.00Ωm-9000kΩm | |
Measuring Mode | Precise 4-pole measurement, 3-pole measurement, simple 2-pole measurement |
Measuring Method | Earth Resistance: rated current change-pole method, measurement current 20mA Max Soil Resistivity: 4-pole measurement (Wenner method) Earth Voltage: average rectification(between P(S)-ES) |
Test Frequency | 128Hz/111Hz/105Hz/94Hz(AFC) |
Short-circuit Test Current | AC 20mA max |
Open-circuit Test Current | AC 40V max |
Test Voltage Wave | Sine wave |
Electrode Distance Range | Can be set 1m-100m |
Shift | Earth Resistance: 0.00Ω-30.00kΩ, automatic shift |
Soil Resistivity: 0.00Ωm-9000kΩm, automatic shift | |
Backlight | Blue screen backlight, suitable for dim places |
Display Mode | 4-digital super-large LCD display, blue screen backlight |
Measuring Indicator | During measurement, LED flash indicator, LCD count down display, progress bar indicator |
LCD Frame Dimension | 128mm×75mm |
LCD Window Dimension | 124mm×67mm |
Dimension | L×W×H: 215mm×190mm×95mm |
Standard Test Wire | 4 wires: each for red 20m, black 20m, yellow 10m, and green 10m |
Simple Test Wire | 2 wires: each for red 1.6m and black 1.6m |
Auxiliary Earthing Rod | 4 rods: Φ10mm×150mm |
Measuring Rate | Earth voltage: about 3 times/second |
Earth resistance, soil resistivity: about 5 seconds/time | |
Measuring Times | Over 5000 times (Short-circuit test, interval time should be at least 30 seconds) |
Line Voltage | below AC 600V |
RS232 Interface | Possess RS232 interface, software supervision, storage data can be uploaded to computer, saved or printed. |
Communication Wire | One piece of RS232 communication wire, with length 1.5m |
Data Storage | 300 sets, “MEM” icon storage indicator, flash display “FULL” icon to indicate storage is full |
Data Hold | Data hold function: “HOLD” icon display |
Data Access | Data read function: “READ” icon display |
Overflow Display | Exceeding measuring range overflow function: “OL” icon display |
Interference Test | Recognize interference signal automatically, “NOISE” icon display when interference voltage exceed 5V |
Auxiliary Earthing Test | Can measure auxiliary earth resistance, 0.00KΩ-30kΩ(100R+rC<50kΩ, 100R+rP<50kΩ) |
Alarm Function | When measuring value exceeds alarm setting value, there is “Toot-toot-toot” alarm hint |
Battery Voltage | When battery voltage decreases to about 7.5V, battery voltage low icon will display, reminding to replace battery. |
Power Consumption | Standby: about 20mA (Backlight shut off) |
Boot and with backlight: about 45mA (25mA without backlight) | |
Measurement: about 100mA (Backlight shut off) | |
Weight | Total weight: 4.5kg (including package) |
Tester: 1443g (including battery) | |
Tesing wires: 1560g | |
Auxiliary earthing rods: 935g (4pcs) | |
Working Temperature & Humidity | -10℃-40℃, below 80%rh |
Storage temperature & humidity | -20℃-60℃, below 70%rh |
Overload Protection | Measuring earth resistance: between each interfaces of C(H)-E、P(S)-ES,AC 280V/3 seconds |
Insulation Resistance | |
Withstanding Voltage | AC 3700V/rms (Between circuit and enclosure) |
Electromagnetic Features | IEC61326(EMC) |
Protection Type | IEC61010-1 (CAT Ⅲ 300V、CAT IV 150V、Pollution 2), IEC61010-031, IEC61557-1 (Earth resistance), IEC61557-5 (Soil resistivity), JJG 366-2004 |
Category | Measurement Range | Intrinsic Error | Resolution |
Earth Resistance (R) | 0.00Ω-30.00Ω | ±2%rdg±3dgt | 0.01Ω |
30.0Ω-300.0Ω | ±2%rdg±3dgt | 0.1Ω | |
300Ω-3000Ω | ±2%rdg±3dgt | 1Ω | |
3.00kΩ-30.00kΩ | ±4%rdg±3dgt | 10Ω | |
Soil Resistivity (ρ) | 0.00Ωm-99.99Ωm | According to the precision of R (ρ=2πaR a:1 m-100m, π=3.14) | 0.01Ωm |
100.0Ωm-999.9Ωm | 0.1Ωm | ||
1000Ωm-9999Ωm | 1Ωm | ||
10.00kΩm-99.99kΩm | 10Ωm | ||
100.0kΩm-999.9kΩm | 100Ωm | ||
1000kΩm-9000kΩm | 1kΩm | ||
Earth Voltage | AC 0.0-600V | ±2%rdg±3dgt | 0.1V |
Tester | 1 PC |
Tester Bag | 1 PC |
Auxiliary Earthing Rod | 4 PCS |
Standard testing Wire | 4 wires: each for red 20m, black 20m, yellow 10m, and green 10m |
Simple testing Wire | 2 wires: each for red 1.6m and black 1.6m |
Zinc-manganese Dry Battery | 6 PCS (R14S 1.5V) |
Monitoring Software Disk | 1 Copy |
RS232 Communication Cable | 1 PC |
Manual/Warranty Card/Qualification Certificate | 1 Copy |
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