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Model
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ETCR3000
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Function
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Earth resistance measurement, Earth voltage measurement, Low resistance measurement
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Power Supply
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DC 9V (Zi-Mn dry battery R14S 1.5V 6 PCS, continuous standby for 300 hours )
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Measuring Mode
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Precise 3-pole measurement, simple 2-pole measurement
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Measuring Method
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Earth ground resistance: constant current change-pole method, measurement current 3mA Max，820Hz；
Voltage to ground: average value rectification
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Data Mode
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Average value, maximum, minimum
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Wire Resistance Verification
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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.
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Display Mode
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4-digital super-large LCD display, blue screen backlight, LCD dimension: 128mm×75mm；Display field：124mm×67mm
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Measuring Indication
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During measurement, LED flash indicator, LCD count down display
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Earth Ground Resistance
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Range：0.01Ω～2000Ω；Resolution：0.01Ω；Accuracy：±1%rdg±3dgt
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Earth Ground Voltage
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Range：0V～600V AC；Resolution：1V；Accuracy：±1%rdg±3dgt
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Tester Dimension
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LWH：215mm×190mm×95mm
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Testing Wires
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Three wires: each for Red 20m, Yellow 10m, and Green 5m
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Simple Testing Wire
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2 wires: each for Red 1.5m and Green 1.5m
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Auxiliary Earthing Rod
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2 PCS: Φ10mm×150mm
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Measuring Rate
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Earth voltage measurement: 3 times/second; Earth resistance: 5 seconds/time
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Measuring Times
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Over 5000 times (20Ω range measuring 10Ω for one time and repeat after 25 seconds)
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Circuit Voltage
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Measuring voltage to ground: measuring below AC 600V
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RS232 Interface
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Possess RS232 interface, software supervision, storage data can be uploaded to computer, preserved and printed.
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Communication Wire
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One piece of RS232 communication wire, with length 1.5m
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Data Storage
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400 sets, flash display “FULL”icon to indicate storage is full
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Data Hold
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Data hold function: “HOLD”icon display
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Data Read
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Data read function: “READ” icon display
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Overflow Display
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Exceeding measuring range overflow function: “OL”icon display
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Alarm Function
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When measuring value exceeds alarm setting value, there is “Toot-toot-toot” alarm hint
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Battery Voltage
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When battery voltage decreases to about 7.8V, battery voltage low icon “ ”will display, reminding to replace battery.
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Power Consumption
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Backlight：25mA Max；Standby: 25mA Max(Backlight shut off)；Measurement：70mA Max(Backlight shut off)
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Weight
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1443g(with batteries)
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Working Temperature & Humidity
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-10℃～40℃；below 80%rh
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Storage Temperature & Humidity
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-20℃～60℃；below 70%rh
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Overload Protection
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Measuring earth ground resistance: between each interfaces of E-P、E-C, AC 280V/3 seconds
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Insulation Resistance
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Over 10MΩ(between circuit and enclosure it is 500V)
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Withstanding Voltage
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AC 3700V/rms (Between circuit and enclosure)
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Electromagnetic Features
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IEC61010-4-3，Wireless frequency electromagnetic field≤1V/m
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Protection Type
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IEC61010-1、IEC1010-2-31、IEC61557-1,5、IEC60529(IP54)、CAT Ⅲ 300V 、Pollution etc.
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Accessories
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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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