Test & Measurement instruments
C.A 6472: Top-of-the-range earth & resistivity tester
C.A 6474 : Earth measurement on pylons with protective
cable
Marina BERHO – Product Manager
MAE-F, 11/2006 - 1
Confidential
 The market: segmentation
 Positioning in the Chauvin Arnoux range
 Positioning in relation to the competition
 Functional presentation & measurement principle
MAE-GB, 02/2006 - 2
The earth testers market
 Traditional methods for measuring earth impedance : the 3-pole method and the 4-pole
method derived from it.
 Advantages : accurate results but following disadvantages:
 Necessity of disconnecting the earth,
 Necessity of setting up auxiliary rods,
 Necessity of sufficient room to set up the rods.
=> often time-consuming and cumbersome.
 Other methods available which allow quicker and easier earth measurements
=> selective earth measurement ( only applicable to parallel earthing systems)
 These methods are:
 The earth clamp
 Measurement with 2 clamps
 3-pole/4-pole measurement + clamp
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The earth testers market
On the basis of these measurement methods, it is possible to segment the earth
testers market as follows:
1. Entry-level earth testers (such as the C.A 6423 / C.A 6460 / C.A 6462)
3P / 4P measurement method - Operating frequency 128 Hz
2. Mid-range earth testers (such as the C.A 6470)
• 3P / 4P measurement method - Adjustable measurement frequency to avoid interference
voltages
• Measurement expert functions
•Functions for comfortable measurement:
memorization / rechargeable battery / automatic calculation for resistivity
3. Top-of-the-range earth testers (such as the C.A 6472)
• Measurement method: traditional methods with rods + selective methods
• Wide measurement frequency band (up to 5 kHz) to avoid interference voltages and to study
the frequency behaviour of an earthing system
• Measurement expert functions: same as C.A 6470
• Functions for comfortable measurement: same as C.A 6470
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Positioning in the Chauvin-Arnoux range
PRICE
C.A 6472 / 74
(Earth / Resistivity /
Earth of pylons)
C.A 6470
(Earth / Resistivity)
C.A 6410-12-15-15R
(Earth clamps)
€ 760
C.A 6456
C.A 6462
C.A 6460
(Loop / 1P,2P,3P earth)
(Earth / Resistivity)
C.A 6423
(3P earth / digital)
C.A 6421
(3P earth / analogue)
PERFORMANCE
Existing products
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New products
Confidential
C.A 6472 / C.A 6474: top-of-the range product
Earth measurement from 40 Hz to 5 kHz
Multi-function earth and resistivity tester for our expert customers
 Measurements possible even in the event of highly resistive soils
 Improved measurement quality due to high rejection of interference
voltages (up to 60 V)
 Excellent accuracy and measurement resolution (up to 0.001 
resolution for 4P earth measurement)
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C.A 6472 / C.A 6474: top-of-the range product
Earth measurement from 40 Hz to 5 kHz
New features compared with the other products of the Chauvin-Arnoux range
 Possibility of performing all types of earth measurements with a single
instrument
 Addition of selective earth measurement functions => possibility of
measurement without disconnecting the earthing system
 Analysis of behaviour as a function of the frequency due to a wide
measurement frequency band (41 Hz to 5 kHz)
 Earth measurements on pylons with protective earth cable (with C.A 6474
option)
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C.A 6472 / C.A 6474: top-of-the range product
Earth measurement from 40 Hz to 5 kHz
Advantages of selective measurement (only suitable for parallel
earthing systems)
 Earth loop measurement with 2 clamps: principle equivalent to the earth
clamp
=> Considerable time-saving as it is not necessary to set up the auxiliary rods
and disconnect the earth connection
 4P + clamp measurement: accurate selective measurement without
disconnecting the earth to be tested
=> No hazards for property and/or people
Advantages of high-frequency measurements:
An earthing system may have an acceptable impedance value at low
frequencies, but its behaviour at high frequencies may prove poor due to the
inductive effect.
=> Earth measurement with a frequency scan can be used to study the
behaviour of an earthing system according to the frequency, thus allowing its
behaviour in the event of a fault (e.g. lightning) to be predicted.
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Utility of the expert functions
Measuring the resistances of the auxiliary rods and the interference voltages :

accurate interpretation of the measurements

help users to understand and rectify malfunctions.
1. Measurement of the auxiliary rod resistances
A high rod resistance value influences the measurement accuracy.
Measuring the resistances of the auxiliary rods => find out which one has an excessively high
value.
Possible to remedy this by adding rods in parallel or by wetting the ground.
2. Measurement of interference voltages
Presence of interference voltages => alteration of earth and resistivity measurements.
Measuring these voltages enable to find out the extent of their influence on the
measurement result.
The C.A 6470 & C.A 6472 use a symbol to warn users in the event of significant interference
voltages and include a system for automatically choosing the test frequency with the least
noise.
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TARGET CUSTOMERS
 C.A 6472
 Major administrations and public services:
SNCF, EDF / RTE and European equivalents, France TELECOM
 Inspection organizations
 Major electrical installers
 Construction and Civil Engineering implementation industries
 Maintenance departments in major industries
 Geologists
 + C.A 6474
 Power transmission companies
 Insurance companies
 Telecommunications installers (GSM masts)
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CA 6472: main functionalities
•Continuity & 2P/4P resistance measurement,
•Earth: 3P, 4P, 4P+clamp, 2 clamps
•Resistivity
•Potential measurement
•Pylon earth measurement (with C.A 6474)
Connection to
C.A 6474
Intuitive use due
to the colourcoded connection
terminals also
shown on the
screen
Marina BERHO – Product Manager
MAE-F, 11/2006 - 11
Direct access
to functions
Test activation
Confidential
C.A 6472: main functionalities
Navigation on the instrument:
A 6-key keyboard for:
- CONFIG-FREQUENCY / DISTANCE:
Choice of the measurement configuration (2 or 4 wires for continuity
measurement, for example) and measurement frequency / input of distances for
resistivity calculation
- DISPLAY / SMOOTH: new display and access to the supplementary
measurement results / activation or deactivation of smoothing on the
measurement result display
- MEM / MR: storage of the measurement results in the memory / rereading of
stored data
- / : in general, incrementation / decrementation of the flashing parameter
(example: distance to be entered for the ground resistivity calculation)
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APPEARANCE
 Rugged, leakproof on-site casing
 Compact
 Particularly ergonomic
 large backlit LCD screen
 rotary switch for direct access to measurements
 6-key keyboard
 marked E-ES-S-H input terminals
 Battery rechargeable on mains or vehicle cigarette lighter
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APPEARANCE
 Large LCD screen
- backlit
- 3 simultaneous digital display levels for more information
- wide range of symbols and indicators
Example:
The connection terminals are
shown on the display; one is not
connected
although
the
measurement selected requires it ,
so it is flashing
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Easy to use
 Colour-coded terminals for simpler connections
 Reduction in handling errors due to automatic detection of
incorrect connections: E, ES, S and H flash on the display if the
connection is incorrect
 3 operating modes:
- Automatic mode in each function; by default, the instrument performs a measurement at
128Hz and chooses the most appropriate frequency in the event of interference voltages.
A single key is all you need for easy handling:
- selection of a function
- press on the START button
- reading of the result
-Scan mode (automatic measurements at different frequencies) allowing a graph of impedance
as a function of frequency to be plotted
-Manual mode (choice of the measurement frequency, display of all the voltages measured,
etc.) for expert customers
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CONTINUITY MEASUREMENT
(
position)
n
Advantages of this type of measurement:
Verification of:
the condition of the measurement cables
the connections between the measurement cables and the measurement rods
the interlinks in a parallel earth network
n
-
Characteristics:
methods : 2 wires or 4 wires (compensation of leads possible with 2-wire method)
possibility of reversing the measurement current and calculating the average
resistance range: 0.001  to 100 k
measurement current: 200 mA for R < 20 
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EARTH MEASUREMENT WITH
3P METHOD (
position)
n The 3P method is the traditional rod method for accurately measuring the
resistance of an existing earth connection.
n
•
•
•
•
•
Characteristics:
resistance range RE : 0.01  to 100 k
adjustable measurement voltage: 16 or 32 Vrms
adjustable measurement frequency: 41 to 5,078 Hz
RS and RH : measurement from 0.1  to 100 k
max. Uinterference 60 Vpeak
 Selection of the frequency:
-This can be done manually (if the user knows a frequency where the interference voltages
will be minimal) or in automatic mode (the instrument makes the selection).
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EARTH COUPLING MEASUREMENT
(
position)
nCharacteristics: the same as the
previous measurements
nAdvantages of the measurement:
- To estimate the reciprocal influence
of 2 earth resistances which are not
connected to one another, the
coupling
coefficient
must
be
calculated.
- This coefficient should be as low as
possible.
- In concrete terms, the aim is to
prevent a possible fault current
flowing in the 1st earth from raising
the potential of the 2nd earth.
nThis
type
of
measurement
involves carrying out successive
measurements:
 Two
earth
resistance
measurements
with
the
3P
method ("3 poles" position)
 One 2P resistance measurement
("2 poles" position)
Marina BERHO – Product Manager
MAE-F, 11/2006 - 18
After these 3 measurements, the
instrument automatically calculates
the coupling resistance Rc.
Confidential
RESISTIVITY MEASUREMENT
(
position)
n Advantages of the measurement:
Assessment of the terrain
- to choose the best position for construction of the earth or earth network
- to optimize the construction costs and save time when seeking the required earth resistance.
nCharacteristics:
- resistance range RS-SE : 0.01  to 100 k
- adjustable measurement voltage: 16 or 32 Vrms
- adjustable measurement frequency: 41 to 128 Hz
- rod resistances RE, RES, RS and RH: measurement from 0.01 ohms to 100 k
- Maximum Uinterference 60Vpeak
nThe C.A 6472 automatically calculates the resistivity r (Wenner or Schlumberger
method) as soon as the distances used for the measurement have been
programmed.
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RESISTIVITY MEASUREMENT
(
position)
n The Wenner & Schlumberger methods
Wenner
Schlumberger
- the distances between the 4 rods
are identical: d
- rW = 2.p.d.RS-ES
Marina BERHO – Product Manager
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- the distance between the 2 outer rods is
2d
- the distance between the 2 inner rods is A
- rS = (p.(d²-A²/4).RS-ES) / 4
Confidential
GROUND POTENTIAL MEASUREMENT
• Lightning: 2 dangers
- Risk of direct strike on an individual or installation
- Risk of electrification when it strikes close to a person due to the step voltage caused by the
lightning.
• Principle:
The current source created at the point of impact
causes an electrical field
=> Voltage on the ground which varies according to
the distance from the source
=> a difference in potential, or step voltage, occurs
between two different points in contact with the
ground, increasing with the size of the step.
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GROUND POTENTIAL MEASUREMENT
Advantages:


Determination of the ground potential value according to the distance
This measurement can be used to obtain a theoretical step voltage
value and to determine the region where the potential rise will be the
lowest in the event of faults.
Measurement principle:
Technical characteristics:
Resistance range R S-SE: 0.01  to 100 k
Voltage measurement range: 0.01 mV to 32 V
Voltage generated in open circuit: 16 or 32 Vrms
Adjustable measurement frequency: 41 Hz to
5,078 Hz
 Measurement of RS and RH: 0.1  to 100 k
maximum
 Maximum Uinterference: 60 Vpeak




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4P EARTH MEASUREMENT
 Based on the same principle as the 3P method
 Provides 10 times greater measurement accuracy on the C.A 6472
Method particularly suitable for measuring very low earth resistances
Very useful for power transmission companies & distributors of electricity
MAE-GB, 02/2006 - 23
SELECTIVE 4P EARTH MEASUREMENT
 Applicable in the case of several resistances set up in parallel
 Principle: Measurement of the current flowing in the considered earth thanks to a
clamp-on ammeter
 This "selective 4P" measurement method provides:
 Considerable time savings because it is no longer necessary to disconnect the
earth resistance to be measured. Indeed, with the clamp, it is possible to
measure the current flowing in the earth connection to be tested, thus removing
the influence of the parallel earth connections.
 Guaranteed safety for the goods and people in contact with the electrical
installation because the earth is not disconnected.
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MAE-F, 11/2006 - 24
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4P AND SELECTIVE 4P
EARTH MEASUREMENT
 Technical characteristics:





Marina BERHO – Product Manager
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Resistance range R E: 0.001  to 100 k
Voltage generated in open circuit: 16 or 32 Vrms
Adjustable measurement frequency: 41 Hz to 5,078 Hz
Measurement of RS and RH: 0.1  to 100 k maximum
Maximum Uinterference: 60 Vpeak
Confidential
EARTH LOOP MEASUREMENT WITH 2 CLAMPS
 Measurement principle
Placing 2 clamps around the earth conductor tested and connecting each of them to the
Instrument
=> 1 clamp injects a known signal ( 32 V / 1,367 Hz) while the other clamp measures the
current flowing in the loop.
This method is based on the same principle as the earth clamp.
 Advantages
This method saves considerable time during earth testing because it is no longer
necessary to:
- set up auxiliary rods
- disconnect the earth connections, which is often time-consuming.
Marina BERHO – Product Manager
MAE-F, 11/2006 - 26
Confidential
EARTH LOOP MEASUREMENT WITH 2 CLAMPS

-
Technical characteristics:
Resistance range R E: 0.20  to 500 
Resolution: 0.01  to 1 
Accuracy: +/- (5% + 1pt)
Adjustable measurement frequency: 1,367 Hz, 1,611 Hz, 1,758 Hz
 Measurement set-up
Caution:
This method is only applicable if there is a
path of low impedance parallel to the
connection tested.
R = R E + ( RE1 // RE2 // RE3 // ... // REn )
It is therefore recommended to evaluate the
equivalent resistance of the n connections
in parallel and ensure that the value is
genuinely negligible compared with R E.
Negligible compared with R E
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Advantages of measurements at high
frequencies
By increasing the frequency of the measurement current, the inductances can be
"saturated" and the resistance to be measured can be isolated.
Example 1: earth measurement with TN system
Equivalent diagram
3P method with a classic 128 Hz frequency
The parallel set-up of the resistances is measured.
Indeed, a large proportion of the current injected flows in the other loops via the PEN wire.
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Advantages of measurements at high
frequencies
High-frequency 3P method
Z
PEN
becomes infinitely large and this prevents the current from flowing
 The entire current injected flows to the earth Re
 The value of Re is measured rather than the parallel set-up of the resistances.
Example 2: Check that the resistance value measured really is the value of the earth under
consideration rather than the result of the parallel set-up of several earths.
Indeed, 3P or 4P earth measurement requires disconnection of the earth bar.
In some cases, the earthing system is complex and users are not necessarily aware
of all the earth connections which they want to measure.
Resistance
In scan mode, if it is observed that the resistance varies
according to the frequency
=> the object measured is not purely resistive
=> the earth measured is in fact connected to another.
frequency
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COMPETITION
The C.A 6472 is the only instrument on the market which can
simultaneously:
- Carry out earth measurements using all the measurement methods
- Carry out high-frequency earth measurements
- Carry out earth measurements on pylons with a protective earth
cable(with C.A 6474 option)
To define its positioning in relation to the market, it must therefore be
compared with various types of products:
- "multi-method" earth testers
- variable-frequency earth testers
- high-frequency earth testers
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C.A 6474 option: Earth measurement on
pylons with protective earth cable
Pylons are linked together by a cable called the "protective earth cable" to drain any
currents to earth; a high-voltage line is therefore equivalent to a parallel earthing
system.
Earth
cable
Highvoltage
lines
Equivalent diagram
L
L
L
L
Rpylon
Problem: Measuring the earth of a pylon without including the earthing of the other pylons
in parallel.
The traditional (3P-type) methods require disconnection of the protective earth cable, which is
dangerous and time-consuming.
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MAE-F, 11/2006 - 31
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C.A 6474 option: Earth measurement on pylons
Solution: C.A 6474
Carry out selective earth measurement on the pylons without disconnecting the
protective earth cable
 Equivalent measurement to a selective measurement with clamps, but
replacing the clamps with Ampflexes
 Use of flexible sensors = any shape of earthing system can be "clamped",
unlike with current clamps which are limited by their clamping diameter.
 Measurement concept with Ampflexes can therefore be applied to all types of
pylon geometries or to earthing systems which are not "traditionally-shaped";
This measurement principle can thus be extended to other types of pylons
(GSM masts, etc)
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MAE-F, 11/2006 - 32
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Measurement context
Equivalent diagram of a high-voltage line:
L
L
L
Current
injection
point
A traditional 4P measurement cannot
yield consistent results when
measuring the earth of a pylon.
L
Earth
cable
Rpylonl
Pylon
measured
There are two solutions for measuring
only the earth resistance of a specific
pylon:
EQUIVALENT A
Zequivalent
Rpylonl
-either directly measuring the value of
the current flowing via the pylon earth
to be measured, i.e. carrying out a
selective measurement
Zequivalent
Pylon
measured
Marina BERHO – Product Manager
MAE-F, 11/2006 - 33
Indeed, much of the current injected
flows via the protective earth cable
(because it is not very resistive) so the
measurement does not give the earth
impedance value of the pylon earth
under consideration, but the value for
the whole of the line.
-or reducing the current diverted via
the protective earth cable to a
negligible value
Confidential
PYLON EARTH MEASUREMENT
The C.A 6474 combines both principles, so it can be used for accurate selective earth
measurements on pylons:
 The use of Ampflexes => precise measurement of the current flowing in the pylon
 A high-frequency measurement => a Zeq value much higher than the earth resistance
value to be measured
 the current diverted via the protective earth cable to the other pylons becomes negligible
and the value of the current flowing via the earth rises
 better accuracy of the measurement.
2 methods of measurement with C.A 6474:
 Active method, i.e. with injection of a measurement current by the C.A 6472
 Passive method using the residual currents flowing in the high-voltage line
2 advantages for the passive method:
- enable to check the consistency of the measurements obtained with the active
method
- ensures that measurement results can be obtained whatever the conditions; indeed,
highly resistive ground may prevent a sufficient measurement current from flowing, so
that the active method cannot be used.
Marina BERHO – Product Manager
MAE-F, 11/2006 - 34
Confidential
Why choose a maximum frequency
of 5 kHz?
 Utilitiy of high-frequency earth measurement :
• to measure the earth resistance of pylons equipped with a protective earth cable
• to forecast the behaviour of an earthing system in the event of lightning.
 Frequency of lightning may be up to 1 MHz, but most of the energy is located between 5 and
30 kHz
=> Why the C.A 6472 + C.A 6474 is limited to a 5 kHz measurement frequency?
The C.A 6474 measurement concept was developed in close liaison with RTE, the pylon
earth measurement specialists in France.
This 5 kHz frequency has been approved by RTE as the frequency providing the best trade-offs
between:
- the error on the measurement instruments' accuracy
- the gain on the ratio of injected current/current in the pylon: indeed, the aim is obtain a
sufficient earth current value for accurate earth measurement.
- capacitive leakage due to the high frequency
 Measurements up to 5 kHz allow extrapolation of the values up to 30 kHz
=> Prediction of the earthing system's behaviour in the event of lightning.
Marina BERHO – Product Manager
MAE-F, 11/2006 - 35
Confidential
PYLON EARTH MEASUREMENT
As well as pylon earth measurements, the C.A 6474 can be used to carry out
the following measurements:
• Measurement of the impedance of the entire line according to the
frequency
 the line's behaviour in the event of lightning can be predicted;
Indeed, in the event of lightning, the line's impedance must be sufficiently low
to allow the fault currents to flow via the protective earth cable and be diverted
to earth via the pylons.
• Quality of protective earth cable connection:
as the fault currents are diverted via the protective earth cable and then via the
pylons, the connection between the two elements must be good.
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Confidential
PYLON EARTH MEASUREMENT
Example of measurement:
Let us consider a network of 10 pylons in which each pylon has an earth resistance of 10 
Test no. 1: 4P method with a "traditional" measurement frequency of 128 Hz
Result: R = 2 
Test no.2: 4P method with a frequency scan from 41 Hz to 5,078 Hz
Test no.3: Selective measurement with the C.A 6474 with frequency scan
Test no. 4: Measurement of the impédance of the line with frequency scan
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PYLON EARTH MEASUREMENT
Interpretation:
1.
traditional 4P measurement does not allow the genuine earth resistance of the pylon under
consideration to be measured
=> a 4P earth measurement at 128 Hz gives an earth resistance of 2  instead of 10 .
2.
The traditional 4P method with a frequency scan can be used to gain a rough idea of the real
earth resistance value: it is a way of checking the pertinence of the results obtained with the
AmpFlex method.
3.
Selective measurement with the C.A 6474: the measurement does not depend on the
measurement frequency; it therefore really is the earth value of the pylon considered (purely
resistive) which is measured.
4.
Measurement of the line impedance and assessment of protective earth cable connection
quality: in the case studied here, the curve representing the line impedance value according
to the frequency has no point of inflexion. This means that the impedance will be infinitely
large in the event of a fault and will not therefore convey the fault currents in the event of
lightning => this line is therefore dangerous.
Marina BERHO – Product Manager
MAE-F, 11/2006 - 38
Confidential
PYLON EARTH MEASUREMENT

When used with a vectorial processing unit (C.A 6474), the C.A 6472
can be used to measure the earth of pylons with protective earth
cables.

Using 4 Ampflex current sensors positioned around the pylon footings
and a frequency scan up to 5 kHz, the earth impedance of the pylon
considered can be measured precisely and selectively.
Technical specifications:
 Resistance range RE : 0.01  to 100 k
 Voltage generated in open circuit: 16 or 32 Vrms
 Adjustable measurement frequency: 41 Hz
to 5,078 Hz
 RS and RH measurement: 0.1  to 100 k
maximum
 Maximum Uintereference: 60 Vpeak
Marina BERHO – Product Manager
MAE-F, 11/2006 - 39
Confidential
MAKING A MEASUREMENT
To validate the principle of measurement, we made many field
measurements with RTE, specialist in earth measurement of pylons.
1. Place auxiliary electrodes H and S on opposite sides of the pylon,as far away as
possible and, if possible, perpendicular to the high-voltage line
 This will eliminate interference with the measurement by spurious voltages or currents
induced under the highvoltage line.
2. In order to avoid electromagnetic
interference:
•unwind the full length of each cable
from the reel
•keep the cables as far apart as
possible on the ground
•take care not to form loops
•avoid placing the cables near or
parallel to metallic conductors (cables,
rails, fences, etc.).
MAE-GB, 02/2006 - 40
MAKING A MEASUREMENT
3.
Connections:
•
Connect the electrodes to terminals H and S.
•
Connect ES and E a conducting metallic part of the pylon located above
the AmpFLEX sensors.
•
Connect the required number of AmpFLEX sensors to channels 1, 2, 3,
and/or 4 (the channels for which they are calibrated) and place the
AmpFLEX loop(s) around the legs of the pylon.
•
Connect the C.A 6472 and the C.A 6474 together
Attention:
•
All of the AmpFLEX loops must be oriented in the same direction and they
must all have the same number of turns.
•
Do not move or touch the AmpFLEX sensors during the measurement,
because that might cause errors.
MAE-GB, 02/2006 - 41
MEASUREMENT WITH AMPFLEX
According to the position of the AmpFlex in relation to the current injection cable on the pylon,
the measurements carried out are different:
1. AmpFlex below current injection:
In this configuration, the
AmpFlex measures the
current flowing to earth I 2
Rs
Injection
point
I1
The current measured can
therefore be used to obtain
the earth resistance value
of the pylon considered.
I2
I injected =I 1 + I 2
I measured = I 2
In this configuration, the
AmpFlex measures the
difference between the
current injected and the
current flowing to earth
2. AmpFLex above current injection
Injection point
The current measured is
the current flowing via
the top of the pylon and
the protective earth cable
Rs
I1
I injected =I 1 + I 2
I measured = I injected - I 2 =I 1
Marina BERHO – Product Manager
MAE-F, 11/2006 - 42
This measurement can
therefore be used to
measure the line
impedance.
I2
Confidential
Summary: Product advantages of the
CA6472/6474








Earth measurement whatever the configuration
Possibility of measurement without disconnecting the earth bar
Wide measurement frequency band: 40 Hz – 5 kHz
High rejection of interference voltages
Measurement of U h-e, U s-e and Ies interference voltages / currents
for better interpretation
Possibility of earth measurement whatever the configuration
Earth measurement on pylons with protective earth cable:
All types of pylons due to the use of flexible sensors
Accurate, pertinent measurements due to the possibility of measuring
at high frequencies
Simple, intuitive use
Marina BERHO – Product Manager
MAE-F, 11/2006 - 43
Confidential
SALES TOOLS
SALES
LITTERATURE
APPLICATION
NOTES
POSTER
MAE-GB, 02/2006 - 44
MAE-GB, 02/2006 - 45
State of delivery
C.A 6472 earth and resistivity tester ............................…………………………….……..P01.1265.04
Delivered with:
• Battery charger
• Operating manual in 5 languages on CD-ROM,
• Simplified operating instructions
• Data export software
• Optical / USB communication cable
• 2 x C182 clamps
Accessories
•
•
•
•
•
C.A 6474 adapter for pylon earth measurement (PYLON BOX) ...............................P01.1265.10
MN82 clamp for C.A 6472 .......................................................................................P01.1204.52
Adapter for battery charging on vehicle cigarette lighter ...................................... P01.1020.36
Optical / RS communication cable...........................................................................P01.2952.52
Earth & resistivity kit (100 m / 150 m)
Marina BERHO – Product Manager
MAE-F, 11/2006 - 46
Confidential
State of delivery: C.A 6474
C.A 6474 adapter for pylon earth measurement (PYLON BOX) .................................P01.1265.10
Delivered with a carrying bag for accessories containing:
• 1 C.A 6472 – C.A 6474 connection cable,
• 6 BNC / BNC cables 15 m long for linking the AmpFlexes to the CA6474
• 4 flexible current sensors (AmpFLEX) 5 m long,
• 1 set of 12 identification rings for AmpFLEX flexible sensors
• 2 cables (5 m green, 5 m black) with safety plugs on winder (cables linking the pylon to the C.A 6472)
• 5 spade lug/banana plug adapters, Ø 4 mm,
• 3 adjustable clamps: fastening of the cables on the pylon
• 1 calibration loop,
AmpFlex
• Descriptive label
BNC
cable
Adjustable
clamp
C.A 6472 / C.A
6474 connection
cable
C182 clamp
MN82 clamp
Marina BERHO – Product Manager
MAE-F, 11/2006 - 47
Confidential
State of delivery: C.A 6474
C.A 6474 adapter for pylon earth measurement (PYLON BOX) ...........................P01.1265.10
Delivered with a carrying bag for accessories containing:
• 1 C.A 6472 – C.A 6474 connection cable,
• 6 BNC / BNC cables 15 m long for linking the AmpFlexes to the C.A 6474
• 4 flexible current sensors (AmpFLEX) 5 m long,
• 1 set of 12 identification rings for AmpFLEX flexible sensors
• 2 cables (5 m green, 5 m black) with safety plugs on winder
(cables linking the pylon to the C.A 6472)
• 5 spade lug/banana plug adapters, Ø 4 mm,
• 3 adjustable clamps: fastening of the cables on the pylon
• 1 calibration loop,
• Descriptive label
Adjustable clamps
AmpFlex
Marina BERHO – Product Manager
MAE-F, 11/2006 - 48
Confidential