Product

KVJD-4000 Earth Resistance Tester

KVJD-4000 Earth resistance tester is specially designed and manufactured for ground resistance, which is widely used in electric power, telecommunications, meteorology, oil field, construction, lightning protection, industrial electrical equipment and other earth resistance, earth voltage measurement.

Product Description

KVJD-4000  Earth resistance tester is specially designed and manufactured for ground resistance, The testing current reaches 20mA. The digital and micro-processing technology, precision 3-wire method and simple 2-wire method are used to measure ground resistance, importing FFT (Fast Fourier Transform) technology, which is widely used in electric power, telecommunications, meteorology, oil field, construction, lightning protection, industrial electrical equipment and other earth resistance, earth voltage measurement.

Technical Data

Function Grounding resistance, loop resistance, conduction resistance and equipotential connection resistance test; soil resistivity and AC voltage test.
Power DC 9V(Zi-Mn dry battery R14S 1.5V 6 PCS, continuous standby for 300 hours )
Back light Controllable white screen backlight, suitable for use in dark field.
Testing method precision 4 wire 3wire  testing, simple 2 wire test grounding resistance
Measure 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)
Range 234 wire method for measuring ground resistance (R):0.000Ω~30000Ω
Soil resistivity (ρ):0.00Ωm~9000kΩm
Grounding voltage:AC 0.0~100.0V
Max. resolution 234 wire method for measuring ground resistance (R):0.001Ω
Soil resistivity (ρ):0.01Ωm
Grounding voltage:0.1V
 

 

 

 

Accuracy

 

 

 

234 wire method for measuring ground resistance (R):

1.0.000Ω~10.00kΩ:  ±2%rdg±5dgt

2.10.0K~100.0kΩ:    ±3%rdg±5dgt

3.100.0K~200.0kΩ:   ±3.5%rdg±5dgt

Soil resistivity (ρ):depends on R accuracy

(ρ=2πaR  a:1 m~100m;π=3.14)

Grounding voltage: ±2%rdg±3dgt
testing voltage wave shape sine wave
Testing frequency 412Hz、825Hz、1280Hz(Automatic frequency selection)
Short circuit test current AC 20mA max
Open circuit test voltage AC 90V max
Electrode spacing 1m~100m
Shift Grounding resistance:0.000Ω~200kΩ Full automatic shift
Soil resistivity:0.00Ωm~9999kΩm Full automatic shift
LCD 6-bit LCD display, white screen backlight
LCD size 128mm×75mm
LCD display size 124mm×67mm
Testing indication LED flashing indication in measurement.LCD count down.Progress bar chart indication
charging indication When charging, the indicator on the charger is bright red, full of bright green.
size Host machine:Length Width Height 320mm×275mm×145mm
Outer size:Length Width Height 400mm×245mm×335mm
test time Ground voltage:approx 2times/sec;ground resistance:approx 7times/sec;soil resistivity:approx 7times/sec
test times 5000times above ( short circuit test, test 1 time,Stop for 30 seconds and retest. )
 circuit voltage AC 600V below test
communication port With RS232 interface, storage data can be uploaded to the computer and saved to print.
communication wire RS232 communication wire 1pcs, length 1.5m
Data HOLD The “HOLD” symbol indicates data is kept.
data save 2000 SET,“MEM”Storage instructions,display “FULL”Indicates that the storage is full.
overflow display Exceeding measuring range overflow function: “OL” icon display
Interface test Recognize interference signal automatically, “NOISE” icon display when interference voltage exceed 5V
auxiliary grounding test Can measure auxiliary earth resistance, 0.00KΩ-30000Ω(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 low  battery , battery voltage low icon will display, reminding to charging battery.
Automatically power off Turn off automatically after standby 15 minutes.
working current Standby: about 25mA (Backlight shut off);

backlight:25mA Max(only backlight consumption);

Measurement: about 150mA (Backlight shut off)

weight Host machine:2.66kg(with battery)
Total weight:6.88kg(with package)
Tool box The military toolbox is designed to support 200kg.
Overload protection  Measure ground resistance :C(H)-EP(S)-ES between each port AC 280V/3sec
Insulation resistance 20MΩ above(between circuit and shell 500V)
Withstand voltage AC 3700V/rms(between circuit and shell)
Electromagnetic features IEC61326(EMC)
Protection type IEC61010-1(CAT Ⅲ 300V、CAT IV 150V、pollution class2);

IEC61010-031;IEC61557-1(ground resistance);IEC61557-5(soil resistivity);JJG 366-2004(ground resistance meter)。

 

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