ELMED ISOTEST 3P Bedienungsanleitung
Operating Manual Isotest 3P Page 1
CONTENTS
1 Introduction.............................................................................................................3
1.1 Safety Instructions ...............................................................................................3
1.2 General Characteristics .......................................................................................6
1.3 First Steps ...........................................................................................................7
1.3.1 Setting the Test High Voltage ...........................................................................8
1.3.2 Setting the Display Sensitivity...........................................................................9
1.4 Functions of the Safety Button.............................................................................9
2 Acoustic Signals during the Test Procedure .........................................................12
2.1 Flaw (Pore) ........................................................................................................12
2.2 Exhaustive Discharge Protection of the Battery.................................................12
2.3 Lack of Earth Connection ..................................................................................12
2.4 Load Exerted by the Test Specimen..................................................................13
2.5 Reminder to Switch Off......................................................................................13
2.6 Alarm Signals ....................................................................................................13
2.7 Unique Display of All Operating States..............................................................14
3 Maintenance .........................................................................................................15
3.1 Replacing the Battery in the Handle ..................................................................15
A Annex...................................................................................................................16
A.1 Technical Data ..................................................................................................16
A.1.1 Power Supply .................................................................................................16
A.1.2 Test Voltage ...................................................................................................16
A.1.3 Dimensions and Weights................................................................................16
B Accessories..........................................................................................................17
B.1 Charger Units ....................................................................................................18
B.1.1 Forms of Charger Units Available ..................................................................18
B.1.2 Types of Battery ............................................................................................18
B.1.3 Connecting the Battery to the Charger Unit....................................................18
B.1.4 Charging the Battery ......................................................................................19
B.1.5 Testing the Current State of Charge ..............................................................19
B.1.6 Technical Data ...............................................................................................20
B.3 Extension Rod...................................................................................................21
C. Checklist .............................................................................................................23
C.1. Test of Readiness for Operation ......................................................................23
C.1.1 Battery (Varta 5M6 6 V/6 Ah or Sonnenschein 6 V/6.5 Ah)............................23
C.1.2 Meaning of the Acoustic Signals ....................................................................23
C.2 Test Voltage......................................................................................................25
C.2.1 Check whether the test electrode has high voltage as follows: ......................25
C.2.2 Is the test voltage correctly set?.....................................................................25
C.2.3 Is the test voltage monitored with a sphere gap?...........................................25
C.3 Earthing.............................................................................................................25
C.3.1 Methods of Earthing.......................................................................................25
C.3.1.1 Direct Connection (Earthing) Between Test Object and ISOTEST ...............26
C.3.1.2 Indirect Earthing With an Earthing Rod and Trailing Earth..........................26
C.3.1.3 Special Forms of Earthing...........................................................................28
C.4 Test Procedure .................................................................................................28
C.4.1 Is an Automatic Controller Installed in the Tester?.........................................28
Operating Manual Isotest 3P Page 2
C.4.2 Are the Test Electrodes in Order as per DIN 30 672, Section 5.5.5?.............29
C.4.2.1 Has a spiral electrode appropriate to the pipe diameter been selected?.....29
C.4.2.2 Has a test brush appropriate to the pipe diameter been selected? .............29
C.4.2.3 Are the brush electrodes solid brushes? .....................................................29
C.4.2.4 Are the brushes still in order? .....................................................................29
C.4.2.5 Do not use brush electrodes with plastic guide wheels! ..............................29
C.4.3 Special Tests .................................................................................................29
C.4.3.1 Subsequent Testing of Contact Surfaces, Slide Valves, etc. ......................29
C.4.3.2 Correct Testing of Socket Pipes..................................................................29
D Tables for Intermediate Values of the Test Voltage .............................................30
ISOTEST 3P-F - Special Model
In this special model, the test voltage is set with a micro-drive. This gives a higher
degree of precision, particularly with low test voltages. For technical reasons, the
test voltage is limited to 25 kV.
In this manual, the designation 3P(-F) stands for tester model 3P as well as for
model 3P-F. Type 3P-F is mentioned specifically only where there are deviations
between the two models.
Operating Manual Isotest 3P Page 3
1 Introduction
1.1 Safety Instructions
The following instructions are given for your safety.
Due to the fact that operation of the ELMED ISOTEST is so simple, there is a great
temptation to use the tester without reading the operating manual.
!Nevertheless, for your own safety,
take a few minutes to read the manual
before switching on the tester for the first time. !
Failure to follow the operating instructions, and especially any information concerning
safety, can lead to accidents and resulting injuries.
Before starting up the ISOTEST unit for the first time, check the working area for
possible obstacles and sources of danger (e.g., risk of tripping over). Accidental
contact with a high voltage and consequent uncontrollable behaviour should not lead
to the tester being placed at risk. This applies in particular when working from ladders
and scaffolding.
When checking coatings within narrow tank or containers be sure to follow the safety
orders ( e.g. safety guard).
Additional precaution is necessary when working with high voltage extension cables
and extensions rods, which do not have a contact protection against electric shock
hazard at the coupling link.
It is necessary to ensure through the use of suitable test electrodes a test procedure
which does not require any further contact of the test electrodes during the test
operation (e.g. guiding the test electrodes ”by hand” when testing drilled holes).
Operating Manual Isotest 3P Page 4
!
ATTENTION
It is possible that radio equipment or mobile phones will not work
properly or are subject to interference if they are in the vicinity of an
ISOTEST high voltage test unit that is in operation. In such a case it
is necessary to cease operation.
In general, ISOTEST units should be switched on only for as short a
time as possible.
Only suitably instructed personnel may work with the ISOTEST
unit.
!
Important notice for wearers of a
Heart pacemaker
During operation of the ISOTEST unit it is
necessary to take into consideration a fault
in the form of switching over of the heart
pacemaker into error mode. It is possible to
avoid this effect on heart pacemakers by
ensuring that patients with implanted
pacemakers do not get closer than 3 m to
the test unit and the spark gap
the test electrodes
the item being tested and all parts
connected to it electrically
and the earthing cable.
Patients with pacemakers must not use
this insulation testing equipment!!
Excerpt from the expert opinion of 20.02.1997
Operating Manual Isotest 3P Page 5
CAUTION !!
Before fitting or changing the test electrode
Turn off the tester at the main switch
The safety button on the handle must not be pressed.
Do not reach beyond the red safety insulator after the tester is turned on.
The same applies to electrodes plugged into the handle. As an unintentional
activating of the safety button ( e.g. when changing the electrode ) would cause the
risk of an electric shock.
Before putting the tester into operation, always check the following parts:
The handle for dirt and moisture
The proper function of the safety button
The high-voltage cable for mechanical damage
On no account may the plugs on the battery leads be short-circuited in order to
avoid
The risk of fire, and
Destroying the battery
Even a brief short-circuit can result in the destruction of the battery and is not a
suitable method for checking the state of battery charge.
CAUTION !!
Should any work be necessary on the tester, this should only be carried out by
trained specialist personnel.
Particular care is necessary as opening the tester exposes the user to voltages which
are considerably higher than the supply voltage.
Operating Manual Isotest 3P Page 6
1.2 General Characteristics
Both tester series 3P with a fixed test high voltage and series 3P(-F) testers with
infinitely variable test high voltage up to 35 kV are characterised by the following
features:
Maximum safety by safety buttom and patented ground plug control.
The possibility of testing all non-conductive and barely conductive materials for
leaks and pores.
The extremely short high-voltage pulses ensure that even the smallest pore
(channels) and flaws are reliably detected and indicated.
Thanks to the high pulse repetition frequency, testing speeds of up to 250 mm/s
are possible.
The test high voltage is set using a sphere gap in accordance with VDE 0433.
The constant adaptation of the power supply by the control electronics guaran-
tees a constant output voltage even under widely differing load conditions.
Assuming proper use of the tester, residual charges on the test object can be
neglected thanks to the very brief unipolar pulses.
Material testing is completely non-destructive. The load on the sheath material is
minimised by the very brief pulses.
Thanks to the sturdy design in conjunction with proven technology, the tester is
suitable for use under the arduous working conditions on construction sites.
More than 40 years of experience in the field of high-voltage testing are your
guarantee of proven and advanced technology.
Operating Manual Isotest 3P Page 7
1.3 First Steps
The following steps are necessary when switching on the tester:
Insert the battery into the battery compartment and connect the plugs to the
corresponding sockets.
!Connection of the incorrect plugs and sockets is ruled out by !
the different plug diameters
Close the battery compartment.
Make the earth connection between tester and test specimen (otherwise the
tester will emit a continuous buzzer tone and will not function, see 2.3 and
Checklist point 3.
Insert the test electrode into the screw fitting on the handle.
On tester version 3P(-F) with variable test voltage, set the desired test voltage
(see 1.3.1).
!On tester version 3P with fixed test voltage, the test voltage is !
fixed so that setting is not necessary.
Turn on the tester main switch (short buzzer tone).
Press the safety buttom on the handle.
!CAUTION! !
The buzzer now sounds briefly to indicate that the set
high voltage is now connected to the test electrode.
Operating Manual Isotest 3P Page 8
1.3.1 Setting the Test High Voltage
!This section applies only to 3P(-F) testers with variable !
test voltage.
The required test voltage level is set via a rotary scale (see figure). The
display on the rotary scale is given in millimetres (corresponding to the distance
between the spheres in the sphere gap). In order to set a given voltage (in kV), the
corresponding distance (S in mm) must be read off from the chart alongside the
rotary knob. Caution! The scale is different on the 3P-F.
Subsequently release the lock of the rotary knob by moving lever in a counter-
clockwise direction.
Setting is now carried out with the black inner part of rotary knob . The numeric
value before the comma (decimal point) must appear in the window of the rotary
knob, the numeric value after the comma must be set with the inner ring (linked to
the black knob).
After setting, lock the rotary knob again by moving lever in clockwise direction.
If a voltage value is to be set which is not listed in the chart on the tester, the
corresponding setting can be determined from the tables in the Annex (see page 26).
!CAUTION! !
The setting range of the rotary scale is limited mechanically
below the value 0.0 and above the value 13.55.
Forcible turning beyond these values will result in
destruction of the rotary scale.
Operating Manual Isotest 3P Page 9
1.3.2 Setting the Display Sensitivity
Reducing the display sensitivity has no effect on the voltage set.
The ”Display” setting knob allows the display sensitivity to be adjusted to match
the various load and test conditions. This also allows barely conductive coatings or
damp and dirty surfaces to be tested in safety. The setting can be made continuously
or in four steps, according to the configuration.
Before starting testing, the ”Display” setting knob should be set to the most
sensitive level (counter-clockwise). If a continuous tone is heard after starting up and
when the electrode is applied, the display sensitivity can be reduced by turning the
setting knob clockwise until the continuous tone stops (see Checklist section C.1.2.).
1.4 Functions of the Safety Button
The safety button has two switching points:
Switching point - 1 -
Pressing the safety button after switching on the main switch with ”normal” pressure
activates the high voltage. The operating state is indicated by a short buzzer tone. If
the safety switch is pressed while switching on the main switch, the alarm signal is
given and the high voltage is not activated. Operation is only possible once the main
switch has been turned off and back on again.
Switching point - 2 – (If safety function activated)
If the safety button is pressed harder than usual (e.g. due to the tester squeezing it
convulsively as a result of contact with the high voltage), the unit is switched off at
once. This switching off is indicated by an alarm signal and can only be stopped by
Operating Manual Isotest 3P Page 10
turning the unit off at the main switch.
Do not wrap adhesive tape around the safety button, as this will cause the
extra battery in the handle to discharge itself.
1.5. Activating / deactivating of the safety function ” second switch step” of
the safety switch at the handle
Depending on the specific operating conditions the ISOTEST can be run in two
different operating modes.
The second step of the safety switch is not activated. When turning on the
ISOTEST at the main switch you will hear the following acoustic signal:
long short long
The second step of the safety switch is activated ( additional safety function).
When turning on the ISOTEST you will hear the following acoustic signal:
long short short short short
!When delivered ex works the second switch step of
the safety switch is not activated !
Dieses Handbuch passt für folgende Modelle
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