2 3 4 Pole Measurement Digital Earth Resistance Tester With Amicrocomputer

2 3 4 Pole Measurement Digital Earth Resistance Tester With Amicrocomputer

VICTOR 4108 Multifunctional Earth Resistance Earth Resistivity Tester Equipped With Amicrocomputer 2 Pole 3 Pole 4 Pole Measurement

Generalization

This Instrument is a multifunctional earth resistance/earth resistivity tester equipped with a microcomputer.

This Instrument employs DSP processor and digital signal processing technology, which draws earth measurement signals directly, possesses features of high frequency, high accuracy and high resistance, and can measure earth resistance accurately.

The Instrument can measure earth ambient parameters (interference frequency and interference voltage), analyze earth measurement noise, and then select a measurement frequency which can reduce the noisy impacts maximally.

Apart from execution of standard 3-POLE and 4-POLE earth resistance measurements, this Instrument provides a method which can measure earth electrode resistance of a single –point and reticular earth resistance system without cutting off any earth electrode in parallel. This Instrument processes functions of earth resistivity calculation, no-spike earth resistance measurement, equipotential resistance measurement and current measurement with clamps.

l The Instrument conforms to the following Safety Requirements:

IEC61010-1(CAT Ⅲ 600V, POLUTION degreeⅡ)

IEC61010-2-031(Special Requirements for hand-held Probes)

IEC61010-2-032(Special Requirements for hand-held Current Clamp)

IEC61557-1,4,5,10(Electronic safety requirements for low voltage distribution system below AC 1000v and DC 1500v )

Basic Measurement Function

2/3/4- pole earth resistance measurement

Selective Earth Resistance Measurement

No-spike Earth Resistance Measurement

Earth resistivity (ρ)Measurement

Equipotential resistance measurement (2-pole/ 4-pole current measurement)

AC Current Measurement(1mA～20A)

l Earth Resistance Measurement employs sine AC simulation measurement, 4 kinds of testing frequencies(94Hz, 105Hz, 111Hz, 128Hz),which are selectable by hand or automatically to reduce impacts from low interference sources.

l Automatic control function of measurement signal frequency(AFC).

l Auxiliary Earth Resistance Measurement Function.

Measurement and display of Auxiliary Earth Resistance

l Up-limit warning display function of auxiliary earth resistance

Warnings are displayed on the LCD when auxiliary earth resistances are too high and may result in inaccurate measurements.

l Equipotential earth resistance measurement , processing automatic polarity-reverse measurement function

l Auto-range Function in Resistance Measurement and OL displays for over range

l Smoothing Measurement

In serious interference cases, the stability of measurement results can be improved by smoothing

Indication Functions for high interference voltage and current.

l Measurement Function of interference voltage and frequency in series.

Can automatically judge AV, DC and display voltage value and frequency when interference voltage in series exits

l Indication Function for over-low measurement current of current clamp

l Dot-matrix 240×128, Monochrome LCD.

l Backlight Function to view the test results in dimly areas.

l OH Indication Function.

l Rk Function is available to cancel the residual resistance on the Test Leads.

l Pre-programmed limits, pass or fail evaluation of measurement results

Standard accessories

• Measurement Suit:H000007

includes:

1 testing wire 6m(black)

1 testing wire 6m(green)

1 testing wire 15m(red)

1 testing wire 30m(blue)

4 auxiliary earth spikes

• 1 user’s manual

• 8 1.5V (LR6)Alkaline batteries

• USB Communication wire

• a software disk(ERTMA)

• Low Range Clamp: H300000R

• Standard Range Clamp: H300000T

• Measurement Ring:H900000

Chosen accessories

• DC15V adaptor

• Rechargeable Batteries(8☓1.2V Ni-Hi or Ni-chromium rechargeable batteries LR6)

Basic index

Disturbance voltage(UST)

Interference frequency(FST)

Current measurement(IST)

Grounding resistance RE (testρ)

Selective grounding resistance(RE )

Without the wand grounding resistance measurement( )

Measurement of soil resistivity (ρ)

DC resistance (R )measurement

More details