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www.victorruoshui.co.kr

 

이  자료는  저작권법에  따라  보호받는  저작물이므로  무단배포  및  무단복제를  금하며,  내용의  전부  또는  일부를  이용하려면,  반드시  한국  VictorRuoshui  社  의  서면동의를  받아야  합니다.

 

This instrument makes earth resistance measurements with fall-of-potential method. 
AC generator G generates current I through earth electrode E (earth resistance RE) and auxiliary earth electrode 

(auxiliary earth electrode RH). 

Voltage UE goes through earth resistance RE, the voltage inspects and measures by Spike S. In the 3-wired circuit, 

the Instrument Plug E and Es are interlinked together. In 4-wired circuit, use another cable to connect Plug Es with earth 
electrode. The voltage drop of the cable between Plug E and earth electrode is not used for measurement in this method. 
The impact of probe resistance RS is negligible within certain limit range due to high impedance in the voltage 
measurement circuit.     

Thus, the earth resistance can be calculated by: 

Meas

E

U

R

I

 

And it is irrelevant with auxiliary earth electrode resistance RH. The Generator runs in frequency between 

70-140Hz. 

It should keep intervals for less than 5Hz with 16 2/3

、

50 or 60Hz and some standard frequency of their harmonic. 

Principle of Earth Resistivity (ρ) Measurements 

Earth resistivity indicates the geology and physical quantity of the calculated and designed earthed system. The 

following measurement procedure employed is developed by F.Wenner used to measuring earth resistivity.

 

Earth resistivity is calculated according to the following formula: 
ρ

＝

2

aR 

ρ

：

mean value of earth resistivity 

（

 · m

）

. 

a

：

  intervals between earth spikes 

（

m

）

 

R

：

Meas

U

R

I

  measured resistance

（

）

 

Notice of the Manual 

 

The present operation instruction is subject to change without notice. 

 

The  content  of  the operation instruction is  regarded as  correct. Whenever  any  user  finds  its mistakes,  omission, 

Содержание VR-4106

Страница 1: ...ns as well The Instrument conforms to the following Safety Requirements IEC61010 1 CAT Ⅲ 600V POLUTION degreeⅡ IEC61557 1 5 Electronic safety requirements for low voltage distribution system below AC 1000v and DC 1500v Basic Measurement Function 2 3 4 pole earth resistance measurement Earth resistivity ρ calculation Earth Resistance Measurement employs AC simulation test 4 kind of testing frequenc...

Страница 2: ...he case Check the product to see whether it is damaged in the shipment or not Check the materials to see whether they are the same as shown in the packing list Keep the packing materials for late delivery Standard and chosen accessories supplied are listed as follows Chosen ones are bought at purchaser s options Standard accessories 1 testing wire 6m black 1 testing wire 6m green 1 testing wire 15...

Страница 3: ... for reference whenever necessary Mis operation may cause accidents and damages to the Instrument in testing Danger Never make measurement on a circuit in which electrical potentials exceeding AC DC250V Do not attempt to make measurement in the presence of flammable gasses Otherwise the use of the instrument may cause sparking which can lead to an explosion Never attempt to use the instrument if i...

Страница 4: ...e batteries if the Instrument is to be stored and will not be in use for a long period Do not use the Instrument when mark displays Do not use or keep the Instrument in high temperature high humidity explosive strong electromagnetic and dewy environment or expose to direct sunlight Do not use abrasives or solvents Use a damp cloth with neutral detergent for cleaning the instrument Do not store the...

Страница 5: ...ccording to IEC61010 1 2001 Identification Mark CE Quality Standard develops designs and manufactures according to ISO 9001 General feature Display Screen digit display in 2000 digits white backlight Operation Temperature and Moisture Range 0 40 ºC relative moisture 85 no condensation Storage Temperature and Moisture Range 20 ºC 60 ºC relative moisture 90 no condensation Accuracy Required Temperat...

Страница 6: ...eable without voiding calibration Measurement 175 L 110 W 70 D mm Weight about 500g Calibration Period One year Measuring range and accuracy Accuracy limits are given as of reading number of least significant digits warranty for one year Note number of least significant digits means the digits increased or decreased in least significant digits Series interference voltage UST Measuring Range Resolu...

Страница 7: ...eads Rk This function can be activated in 20Ω position Range 0 00Ω 5 00Ω RK value saved in 20Ω position is still valid for measuring range over 200 Earth resistance Re Rg at ρ measurement Range Measuring Range Resolution Accuracy Remark 20Ω 0 10Ω 19 99Ω 0 01Ω 2 15 RH RS is 500Ω Modified Rk data 200Ω 20 0Ω 199 9Ω 0 1Ω 2 5 2000Ω 200Ω 1999Ω 1Ω 3 5 20kΩ 2 00kΩ 19 99kΩ 0 01kΩ ...

Страница 8: ...tage in 400 Hz 60 Hz 50 Hz 16 2 3 Hz system frequency or input series interference voltage by DC voltage through E and S terminals The mean square root value of r m s in series interference voltage is 3V DC is excluded in 20Ω range Additional error for 3V series interference voltage 5 10 After measuring the probe resistance auxiliary earth resistance and earth resistance the Instrument will displa...

Страница 9: ...ions designated in IEC61557 1 and the following conditions Series interference voltage in 400 Hz 60 Hz 50 Hz 16 2 3 Hz system frequency or input series interference voltage by DC voltage through E ES and S terminals The mean square root value of r m s in series interference voltage is 3V Resistance of auxiliary earth electrode and probe 4kΩ 100 RE 50kΩ Basic Error or Impact Volume Reference Range ...

Страница 10: ... 반드시 한국 VictorRuoshui 社 의 서면동의를 받아야 합니다 Resistance of auxiliary earth electrode and probe 4kΩ 100 RE but 50kΩ E5 4 3 in Section 5 T Operation error B A 1 15 2 3 4 5 2 2 2 2 E E E E 4 3 in Section 5 R A basic error En changing volume R routine testing T type testing B B 基值 basic value 100 ...

Страница 11: ...co kr 이 자료는 저작권법에 따라 보호받는 저작물이므로 무단배포 및 무단복제를 금하며 내용의 전부 또는 일부를 이용하려면 반드시 한국 VictorRuoshui 社 의 서면동의를 받아야 합니다 Section Three Instrument layout Instrument body Figure 1 Displaying Unit Input terminals Press Key Testing Key ...

Страница 12: ...보호받는 저작물이므로 무단배포 및 무단복제를 금하며 내용의 전부 또는 일부를 이용하려면 반드시 한국 VictorRuoshui 社 의 서면동의를 받아야 합니다 Terminal Figure 2 Terminals Function Illustration H C H terminals C terminals Blue S P S terminal P terminal red ES ES terminal green E E terminal black ...

Страница 13: ...ff the backlights press for more than 2 seconds to power off Press to select testing functions 4 Pole 3 Pole 2 Pole earth resistivity ρ Default Mode 4 Pole method Under earth resistance measurement earth resistivity measurement function Press to select displayed data in Main Display Screen Under 4 Pole mode RE RH RS UST RK RE default display RE Under 3 Pole mode RE RH RS UST RK RE default display ...

Страница 14: ...tting position Under earth resistance measurement earth resistivity measurement function press to save data Under RK function press to save data clean RK value for 0 00Ω when pressing for more than 2 seconds Under MEN press to delete data Under Setting function press to save setting data Press to start measurement once Press to select Yellow Key function the Screen displays in the left corner Yell...

Страница 15: ... 및 무단복제를 금하며 내용의 전부 또는 일부를 이용하려면 반드시 한국 VictorRuoshui 社 의 서면동의를 받아야 합니다 Display Unit The Notes and Warnings for the Instrument operation are displayed in all kinds of marks and information Here is the detailed illustration for Marks and Information Figure 4 ...

Страница 16: ...nction RE RH RS RG RK UST 2 Main screen 3 234POLE Earth resistance testing methods 2POLE 3POLE 4POLE 4 Low battery mark 5 Unit in the Main Display Screen AC voltage V Resistance unit Ω ohm KΩ thousand ohms Resistance rate unit Ω m ohm meter KΩ m thousand ohms meter 6 Hz Auxiliary display unit hertz 7 Recall delete saving data 8 Auxiliary screen 9 Noise mark display when UST 5V ...

Страница 17: ...han limits Both RH and RS are higher than limits 13 High voltage mark display when UST 20V Section Four Preparation for testing Power on To turn on the Instrument press key to connect with the power To turn off the Instrument press key for more than 2 seconds to cut the power When being powered on the Instrument starts inner self diagnose and displays power on mark firstly and then undertakes rele...

Страница 18: ... backlight if Users does not turn off the backlight within 30 seconds The auto turn off function is prohibited if the setting is 0 Low battery display Mark displays in the upper left Main Screen after power on means low battery please replace with new ones recharge if the batteries are chargeable and then use Warning To avoid electrical shock hazard or personnel injury due to wrong readings replac...

Страница 19: ... resistance mode the Main Screen displays Rk mark in the upper left part and in the lower right part Figure 5 Step four press TEST Key to measure Rk Step five press Key to save Rk value and the Main Screen displays SAVE mark in the lower left part Note the Rk value will be saved in the Instrument after powering off The residual resistance value is valid in all resistance range The Main Screen disp...

Страница 20: ...terface and the Main Screen displays mark repress to clean the Rk compensation value Figure 8 Rk value is 0 00Ω after cleaning Step six press key to exit from Rk compensation interface Series interference voltage testing function This measurement function detects the possible interference voltage and its frequency Before undertaking earth resistance measurement the function is automatically activa...

Страница 21: ... are measured automatically at auxiliary earth resistance measurements and can be recalled on the Main Screen Note Rh and Rs stand for Auxiliary Earth Pole H C and the Auxiliary Earth Resistance of S P respectively Connection of Earth Test Leads and Auxiliary Earth Spikes Connect the Earth Test Leads to the connectors on the instrument firmly Otherwise a contact failure occurs may result in measur...

Страница 22: ...of 3 test leads black red blue to the corresponding terminals E S and H on the instrument respectively Engage 3 Alligator clips to short circuit all of them Save the Rk values with reference to the residual resistance on the Test Leads 4 Connection of Auxiliary Earth Spikes and Test Leads See figure 9 Stick the Auxiliary Earth Spikes S and H into the ground deeply which should be aligned from the ...

Страница 23: ...Spikes S and H in the moist part of the soil Ensure that all parts are well connected Give enough water where the spikes have to be stuck into the dry stony or sandy part of the earth so that it may become moist In case of concrete lay the Auxiliary Earth Spike down and water it or put a wet cloth etc on the spike when making measurements The measurement result may be incorrect if interference vol...

Страница 24: ...t where the E Test Lead is connected Auxiliary Earth Spike 2 pcs connect to S and H Terminals respectively 1 Press key to select measurement method 4 Pole the Main Screen displays 4POLE in the upper part 2 Press Key to select measurement frequency display in auxiliary display part 3 Residual resistance of Rk Firmly insert each plug of 4 test leads black green red and blue to the corresponding term...

Страница 25: ...layed on the Main Screen when the measurement is finished Press Key to read RH RS UST and RK values 6 Press Key to save measurement results see section six saving and reading of the measurement results Notes The readings may not correct when the auxiliary earth resistance is too high Stick the Auxiliary Earth Spikes S and H in the moist part of the soil Ensure that all parts are well connected Giv...

Страница 26: ...pike cannot be stuck In this method an existing Earth Electrode with a low earth resistance such as a metal water pipe a common earth of a commercial power supply and an earth terminal of a building can be used with the 2 Pole method Terminals to be used E and H Terminals Test Leads E and H Terminals respectively Auxiliary Earth Spike None is used 1 Press key to select measurement method 2 Pole th...

Страница 27: ...alue and related information are displayed on the Main Screen when the measurement is finished Press key to read RH RS UST and RK values Note the residual value is valid in earth resistivity measurement Figure 11 Note The results in simplified measurement include auxiliary earth resistance Thus the displayed value may cause error if the auxiliary earth resistance is over high The measurement resul...

Страница 28: ...erminals to be used E ES S H Terminals Test Leads connect to the E ES S H Terminals Auxiliary Earth Spike 4 pcs Measurement method is shown as follows 1 Press key to select measurement method Earth Resistivity 2 Press key to select measurement frequency display in auxiliary display part 3 Connection of Auxiliary Earth Spikes and Test Leads See figure 12 Stick the four Auxiliary Earth Spikes into t...

Страница 29: ...lated information are displayed on the Main Screen when the measurement is finished Press key to read RH RS UST and RK values Note The measurement result may be incorrect if interference voltage is higher than 5v and the noise mark displays When message or or is displayed it means bad connection of the Test Leads or warnings for failure of correct measurement due to high value of earth resistance ...

Страница 30: ...e auxiliary part add one automatically and the measurement result is saved successfully The stored dada are parameters of all measurement Figure 13 Note Please undertake cancel data operation for first use of storing function Data cannot be saved while the Low Battery Mark is displayed on the Main Screen When the saved data reaches to the max limit of the capacity Full is displayed on the auxiliar...

Страница 31: ...he data The saved data can be delete on the Main Screen according to following sequence Warning To avoid electrical shock remove the Test Leads off in MEN function 1 Remove the Test Leads 2 Press key to enter into MEM function When the Main Screen displays in the lower right part the Instrument will read the last record in default setting 3 Press key the Main Screen displays mark to enquire whethe...

Страница 32: ...o power off Setting range is 0 90 minutes press key to select blinking position press key to set flicker bit press key to set flicker digits Setting as 0 indicating cancel auto power off function 5 minutes backlight time setting Setting range is 0 90 minutes press key to select blinking position press key to set flicker bit press key to set flicker digits Setting as 0 indicating cancel auto power ...

Страница 33: ...n the terminals can affect readings Clean the terminals as follows 1 Turn the Meter off and remove all test leads 2 Shake out any dirt that may be in terminals 3 Soak a new swab with alcohol Clean each terminal with the swab Replacing the batteries The Meter is powered by eight AA batteries IEC LR6 Warning To avoid electrical shock or personal injury Remove test leads from the meter before opening...

Страница 34: ... to high impedance in the voltage measurement circuit Thus the earth resistance can be calculated by Meas E U R I And it is irrelevant with auxiliary earth electrode resistance RH The Generator runs in frequency between 70 140Hz It should keep intervals for less than 5Hz with 16 2 3 50 or 60Hz and some standard frequency of their harmonic Principle of Earth Resistivity ρ Measurements Earth resisti...

Страница 35: ...를 받아야 합니다 etc he or she is requested to contact the manufacturer The present manufacturer is not liable for any accident and hazard arising from the customer misuse or inadvertent operation The functions described in this operation instruction should not be used as grounds to apply this product to a particular purpose ...

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