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ETCR3350 Large Scale Grounding Grid Earth Resistance Online Detector

Main Functions
On-line monitoring the large-scale grounding device earth resistance, grounding conduction, soil resistivity, step voltage, contact voltage, surface potential gradient, etc.
Grounding impedance measurement range: 0.000Ω~2000Ω
Soil resistivity measurement range: 0Ωm~125kΩm
Output current level: 1A~5A
Max. voltage output: 400V
Memory: data storage 1000 groups
Alarm function: setting alarm threshold
USB interface
Bluetooth communication
    Product Introduction
    ETCR3350 Large-Scale Grounding Grid Earth Resistance On-Line Monitor, also known as earth Grid grounding impedance on-line tester, earth Grid on-line tester, which is used for on-line monitoring of substation ground network, power plant, microwave station, communication base station and other large ground network grounding parameter. The monitor is powerful, can test power frequency character parameters of power frequency grounding impedance, grounding conduction resistance, soil resistivity, step voltage, contact voltage, and potential gradient, etc.
    ETCR3350 Large-Scale Grounding Grid Earth Resistance On-Line Monitor is manufactured according to the JJG984-2004 Grounding Conduction Verification regulation, DL/T475-2006 Grounding Device Characteristic Parameters Measurement Guidelines, DL/T845.2-2004 Resistance measuring Device General Technical Conditions Part ll: Power Frequency Grounding Resistance Tester. The instrument has unique grounding pile, cable diagnostic function and self-checking function to ensure the accuracy of test result. And the instrument also adopt with super strong automatic frequency conversion anti-interference technology, match with 400V/5A high-power output can accurately measure the power frequency data of below 50Hz under strong interference environment.
    ETCR3350 Large-Scale Grounding Grid Earth Resistance Tester has storage, time function,automatically record 1000 groups test result containing date & time, the instrument with Bluetooth communication that support Android system and RS485 communication, users can set up the wired network system or wireless network system to realize remote on-line monitoring the earth grid grounding system.
    1.Comprehensive on-line monitoring the power frequency characteristic parameter of large grounding grid earth resistance.
    2.Output current 1A~5A, voltage 400V,automatic frequency conversion and hardware and software filtering technology, which makes the instrument with max. anti-interference, ensuring the data stable and reliable.
    3.With test function of current pile and voltage pile, which is used to diagnose the fault of poor connection of line contact and poor grounding between voltage pile and current pile.
    4.Self-checking function, Equipped with 0.5Ω standard resistor for self-checking at any time to ensure the accuracy of the test result.
    5.Alarm function: setting alarm threshold
    6.Memory: data storage 1000 groups
    7.Bluetooth communication
    8.With RS845 communication realize remote on-line monitoring large grounding grid earth parameter.
    Technical Parameter
    Power Supply AC220V±10%, 50Hz
    Display Screen 5 inch touch color screen
    Impedance Measurement Range 0.000Ω~2000Ω
    Max. Solution 0.001Ω
    Measurement Error ±2%rdg±5dgt
    Soil Resistivity Measurement Range 0Ωm~125kΩm(Depending on the resistance measurement range and test length)
    Soil Resistivity Measurement Accuracy Depending on the measurement accuracy of R(ρ=2πaR; a:1 m~100m; π=3.14)
    Anti-power Frequency Voltage Interference Ability 10V(50Hz)
    Test Current Waveform Sine wave
    Test Current Frequency Choose one or two frequency point between 40Hz and 60Hz
    Max. Output Current 5A
    Output Current Level 1A, 2A, 3A, 4A, 5A
    Max. Output Voltage 400V
    Measuring Line Requirement The cross-sectional area of the copper core of the current line ≥2.0mm2; the cross-sectional area of the copper core of the voltage line ≥1.5mm2
    Overall Size 450×296×280mm
    Instrument Weight Host weight: about 26kg, total weight: about 37.6kg (include accessory)
    Memory 1000 groups
    Communication Function RS485 interface, data upload function
    Bluetooth Communication Support Android system
    Withdraw Voltage AC 3700V/rms(Between the circuit and the housing)
    Working Temperature & Humidity -10℃~40℃; below 80%RH
    Storage Temperature & Humidity -20℃~60℃; below 70%RH
    Model comparison
    Product Picture Product Model Name Resistance Range Max Output Voltage Max Output Current Frequency Communication Method Others
    ETCR3300B Large Scale Grounding Grid Earth Resistance Tester 0Ω~2000Ω 400V 5A 40Hz~60Hz USB
    Bluetooth
    Printer
    ETCR3350 Large Scale Grounding Grid Earth Resistance Online Detector 0Ω~2000Ω 400V 5A 40Hz~60Hz 485 Communication
    Bluetooth
     
    Data download
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Guangdong ETCR Electronic Technology CO.,Ltd
Our corporate focuses on the research, development, and production of intelligent power testing and control instruments; and also provides OEM service.
Guangdong ETCR Electronic Technology CO.,Ltd
Our corporate focuses on the research, development, and production of intelligent power testing and control instruments; and also provides OEM service.

info@etcr.net

(86-757)66860936

(+86)13802922567

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10th Floor, Block 5, Liandong Intelligent Manufacture Park, No. 105, Shilong North Road, Nanhai District, Foshan City, Guangdong, China
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