ETCR3200 Double Clamp Grounding Resistance Tester is specially design for the measurement of earth resistance, soil resistivity, earth voltage, leakage current of grounding line, AC current, DC resistance. Adopting the latest digital technology, precise 4-pole, 3-pole and simple 2-pole method, selection method, double clamp method to measure grounding resistance, for earth resistance measurement; large caliber clamp design, can use to measure the grounding system which adopt large-scale down conductor; can flexibly and precisely measure the value of grounding resistance in every complicated situation like single point grounding, grounding mesh; it is not need to disconnect any parallel connection pole when measuring parallel-grounding, and massively improve the convenience when measuring. Importing FFT and AFC technology, with a unique function of anti-interference capability and the ability to adapt to the environment, consistency of repeat testing, to ensure high precision, high stability and reliability for prolonged measure, which is widely used in electric power, telecommunications, meteorology, oil field, construction, lightning protection, industrial electrical equipment and other earth resistance, soil resistivity, earth voltage, AC voltage measurement.

 ETCR3200 Double Clamp Grounding Resistance Tester is composed of host machine, monitoring software, testing wires, auxiliary ground pillars, communication wires and others. The large LCD display of host machine is with blue backlight and bar graph indicating that can be seen clearly. At the same time it can store 2000 sets of data, fulfilling historical inquiry and online real-time monitoring through monitoring software, dynamic display, and alarm indicator, auto-shut down and with the functions like historical data access, reading, preservation, report forms, printing and so on.

 Specifications:

 Base Conditions and Working Conditions

               Influence Quantity    

            Base Condition    

            Working Conditions    

            Remark    

                Ambient Temp    

            23C±1C    

            -10C-40C    

            ----    

                Ambient Humidity    

            40%-60%    

            <80%    

            ----    

                Working Voltage    

            9V±0.1V    

            9V±1.5V    

            rC.rP    

                Auxiliary Earth Resistance    

            <100Ω    

            <30kΩ    

            ----    

                Interference Voltage    

            None    

            <20V    

            ----    

                Interference Current    

            none    

            <2A    

                Electrode Distance when measuring R    

            a>5d    

            a>5d    

            ----    

                Electrode Distance when measuring ρ    

            a>20h    

            a>20h    

            ----    

               Function    

   4-pole, 3-pole and simple 2-pole, selection, double clamp method measure grounding resistance, soil resistivity; Measurement of earth voltage, AC voltage, leakage current of AC current

                Power Supply    

   DC 9V(Zn-Mn dry battery R14S 1.5V 6 PCS, continuous standby for 300 hours )

                Caliber of clamp    

   Φ68mm

                Measurement Range    

   Selection method: 0.00Ω-3000Ω

       Double clamp method: 0.00Ω-9000kΩ

       2/3/4 pole method:0.00Ω~30.00kΩ

       Soil resistivity:0.00Ω~9000kΩ

       DC resistance:0.00Ω~30.00kΩ

       Earth voltage:0.0V~100.0V

       AC current:0.00mA~600A

                Measuring Mode    

   Precise 4-pole measurement, 3-pole measurement, simple 2-pole measurement, selection method, double clamp method measure grounding resistance

                Measuring Method    

            2/3/4 pole method: change-pole method, measurement current 20mA Max    

         Selection method: change-pole method, measurement current 20mA Max    

         Double clamp method: disconnect mutual inductance method, measurement current 1mA Max    

         Soil Resistivity: 4-pole measurement (Wenner method)    

         Earth Voltage: average rectification(between P(S)-ES)    

         AC current: mutual inductance method    

                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    

   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 countdown 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 wires: Φ10mm×150mm Over 5000 times (Short-circuit test, interval time should be at least 30 seconds)

                Measuring Rate    

   Voltage to ground: about 2 times/second

       Current to ground: about 2 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)

                RS232 Interface    

   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    

   2000 sets, “MEM” icon storage indicator, 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

                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.

                Auto-shut off    

   Automaticlly shut down 15minutes after booting

                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: 8.0kg (including package)

       Tester: 1653g (including battery)

       Testing wires: 1560g

       Auxiliary earthing rods: 935g (4pcs)

                Working Temperature & Humidity    

   -10C-40C, below 80%rh

                Storage temperature & humidity    

   -20C-60C, below 70%rh

                Overload Protection    

   Measuring earth resistance: between each interfaces of C(H)-E.P(S)-ES,AC 280V/3 seconds

                Insulation Resistance    

   Over 20MΩ (between circuit and enclosure it is 500V)

                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

      Intrinsic error and performance indicators under base conditions  

                           Function      

                  Measurement Range      

                  Intrinsic Error      

                  Resolution      

                          2/3/4 pole method measure 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      

                          Selection method to measure grounding 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      

                          Double clamp method to measure grounding resistance(R)      

                  0.01Ω-1.00Ω      

     ±10%rdg±5dgt

                  0.1Ω      

                          1.0Ω-10.0Ω      

     ±10%rdg±5dgt

                  0.01Ω      

                          10Ω-100Ω      

     ±10%rdg±5dgt

                  1Ω      

                          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(50Hz/60Hz)      

                  AC 0.0-600V      

                  ±2%rdg±3dgt      

                  0.1V      

                          AC current(50Hz/60Hz)      

                  0.0mA-600.0A      

                  ±2%rdg±3dgt      

                  0.0mA      

Accessory

      Tester

   1 PC

       Tester Bag

   1 PC

       clamp

   2PC

       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) (not included package)

       Monitoring Software Disk

   1 Copy

       RS232 Communication Cable

   1 PC

       Manual/Warranty Card/Qualification Certificate

   1 Copy