Shenzhen Yehai Sci. & Tech. Deve. Co., Ltd.
Shenzhen Yehai Sci. & Tech. Deve. Co., Ltd 20 Years in Instruments and Measurement Testers
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Grounding Digital Earth Resistance Tester With USB Interface PC Link YH302
Quick Detail:
Description:
The YH302 is advanced intelligent Earth Resistance Tester, which is used to measure grounding resistance for grounding pole connected to some conductive part
of facility in the power distribution unit of power circuit or building structure, for working grounding (the power distribution unit of power circuit is setting some earth
electrode for good operating condition), for safeguard grounding( if the insulation is damaged, the metal case of electric facility and the construct rack of the power distribution unit or electric pole tower may
be electrified.
Therefor, setting safeguard grounding to prevent person and facility from electric damage), for safeguard grounding for the thunder and lightning
(It is seted for thunderstruck safeguard facility is discharg), for static electricity safeguard grounding (to prevent the inflammable oil, natural gas tin and pipe from
static electricity danger). For grounding pole (It is metal conductor that is buried in the soil and directly in
touched with earth), for grounding wire(It is used to connect the ground terminal of electric facility to grounding pole), and for the Grounding Net (It is Large-Size horizontal net grounding unit that is consist of vertial grounding pole
and horizontal grounding pole used for Power House, Transformer Station.
The grounding unit has discharge function and Stabilize voltage ) The tester used for
the furnish power, transformer station , it's rated AC voltage up to 500KV.
Features
☉ Current Clamp selection method is used to measuring earth resistance without breaking grounding connection
☉ Double clamp without auxiliary electrode is used to fast measuring grounding resistance
☉ Auto and manual control the test frequency have 94Hz, 105Hz, 111Hz, 128Hz four frequency Provide choice. Automatic frequency
control(AFC) is automatically identified interference frequency and then selected the proper measurement
frequency , so that reduced the affect of interference voltage.
☉ Automatically measuring the interference voltage and the leakage current. The limited value will be alarmed.
☉ Auto power off
☉ Clock display
☉ Double battery power supply and low battery indication
☉ Data storage:Can memorize up to 100 measuring values, and uploading to PC by USB2.0 interface.
Specifications
|
Test mode |
voltage |
frequency: |
resistance |
|
3 pole & 4 pole |
AC 20V/48V |
94Hz;105Hz;111Hz;128Hz;AFC |
0.02Ω ~ 300kΩ ±(5%rdg+5dgt) |
|
3 pole & 4 pole with Current Clamp |
AC 20V/48V |
94Hz;105Hz;111Hz;128Hz;AFC |
0.02Ω~19.99kΩ ±(5%rdg+5dgt) |
|
Double Clamp |
AC48V |
94Hz;105Hz;111Hz;128Hz;AFC |
0.02Ω~150Ω ±(10%rdg+5dgt) |
|
2 pole R~ |
AC20V |
94Hz;105Hz;111Hz;128Hz;AFC |
0.02Ω ~ 300kΩ ±(5%rdg+5dgt) |
|
2 pole /4pole R |
DC20V |
|
0.02Ω ~ 3kΩ ±(5%rdg+5dgt) |
|
RK (compensation measurement for wire resistance) |
AC20V/48V DC/20V |
94Hz;105Hz;111Hz;128Hz;AFC |
0.02Ω~29.99Ω ±(5%rdg+5dgt) |
|
Test Short Current |
≤ 250 mA |
||
|
Soil resistivity |
AC20V/48V |
94Hz;105Hz;111Hz;128Hz;AFC |
0.02Ω·m~1000kΩ· m ±(5%rdg+5dgt) |
|
Disturb Voltage; Current and Frequency |
Voltage ±1V~±50VDC/AC±(5%rdg+5dgt) Frequency 16Hz~400Hz ±1%rdg+2dgt Current: 20mA~2A;±(5%rdg+5dgt) |
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USB2.0 interface |
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|
Data Storage |
Manually store 100 groups |
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|
Power Supply |
LR14×6; Voltage:9V Recharge Battery:Ni~MH recharge Battery, 7.2V Charger: Input voltage:100V~240V Frequency:50Hz~60Hz Output Voltage:12VDC3A |
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Display |
LCD display, with Back light. Max 9999 |
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Dimension |
230(W)×125(H)×284(L)mm |
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Weight |
Approx. 2.5kg |
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