Circutor GETEST MPC-5 User manual

INSTRUCTIONS MANUAL
Step and contact voltage meter
GETEST
(M98224701-03-20A)

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GETEST
Instructions Manual

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Instructions Manual
GETEST
SAFETY PRECAUTIONS
DANGER
Warns of a risk, which could result in personal injury or material damage.
ATTENTION
Indicates that special attention should be paid to a specific point.
Follow the warnings described in this manual with the symbols shown below.
If you must handle the unit for its installation, start-up or maintenance, the following should be
taken into consideration:
Incorrect handling or installation of the unit may result in injury to personnel as well as damage to the
unit. In particular, handling with voltages applied may result in electric shock, which may cause death
or serious injury to personnel. Defective installation or maintenance may also lead to the risk of fire.
Read the manual carefully prior to connecting the unit. Follow all installation and maintenance in-
structions throughout the unit’s working life. Pay special attention to the installation standards of the
National Electrical Code.
Refer to the instruction manual before using the unit
In this manual, if the instructions marked with this symbol are not respected or carried out correctly, it can result
in injury or damage to the unit and/or installations.
CIRCUTOR, SA reserves the right to modify features or the product manual without prior notification.
DISCLAIMER
CIRCUTOR, SA reserves the right to make modifications to the device or the unit specifications set
out in this instruction manual without prior notice.
CIRCUTOR, SA on its web site, supplies its customers with the latest versions of the device specifica-
tions and the most updated manuals.
www.circutor.com
CIRCUTOR, recommends using the original cables and accessories that are supplied
with the device.

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GETEST
Instructions Manual
CONTENTS
SAFETY PRECAUTIONS .........................................................................................................................................................3
DISCLAIMER ..........................................................................................................................................................................3
CONTENTS.............................................................................................................................................................................4
REVISION LOG .......................................................................................................................................................................5
SYMBOLS...............................................................................................................................................................................5
1. VERIFICATION UPON RECEPTION....................................................................................................................................6
1.1.- RECEPTION PROTOCOL.............................................................................................................................................6
1.2.- TRANSPORTATION AND HANDLING .........................................................................................................................6
1.3.- STORAGE.................................................................................................................................................................. 7
2. PRODUCT DESCRIPTION .................................................................................................................................................8
3. DEVICE INSTALLATION....................................................................................................................................................9
3.1.- PRELIMINARY RECOMMENDATIONS ........................................................................................................................9
3.2.- INSTALLATION ....................................................................................................................................................... 10
4. OPERATION.....................................................................................................................................................................11
4.1.- DESCRIPTION OF THE DEVICE.................................................................................................................................11
4.2.- DESCRIPTION OF THE Getest APP ........................................................................................................................ 12
4.3.- START-UP .............................................................................................................................................................. 12
4.4.- TEST TYPES ........................................................................................................................................................... 16
4.4.1.- CONNECTION OF THE HARDWARE GROUND AND AUXILIARY GROUND........................................................ 16
4.4.2.- STEP VOLTAGE................................................................................................................................................. 17
4.4.3.- CONTACT VOLTAGE.......................................................................................................................................... 18
4.4.4.- GROUND RESISTANCE .................................................................................................................................... 18
4.5.- WARNING AND ERROR MESSAGES........................................................................................................................ 19
5. TECHNICAL FEATURES.................................................................................................................................................. 21
6. MAINTENANCE AND TECHNICAL SERVICE ...................................................................................................................23
7. GUARANTEE.....................................................................................................................................................................23
8. CE CERTIFICATE ............................................................................................................................................................24

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Instructions Manual
GETEST
REVISION LOG
Table 1: Revision log.
Date Revision Description
01/20 M98224701-03-20A Comprehensive revision of the manual
Note: Device images are for illustrative purposes only and may differ from the actual device.
SYMBOLS
Table 2: Symbols
Symbol Description
In accordance with the relevant European directive.
In accordance with the direct CMiM.
In accordance with the direct UKCA (UK Conformity Assessed)
Device compliant with European Directive 2012/19/EC. At the end of its useful life,
do not leave the device in a household waste container. It is necessary to follow the local
regulations on the recycling of electronic equipment.
Direct current.
~Alternating current.

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GETEST
Instructions Manual
1.- VERIFICATION UPON RECEPTION
1.1.- RECEPTION PROTOCOL
Upon reception of the device, verify the following points:
a) The device meets the specifications described in its order.
b) The device has not suffered any damage during transport.
c) Perform an external visual inspection of the device before connecting.
d) Check that it has been delivered with the following:
- 3 rolls of cable (2 red, 1 yellow-green)
- 1 power supply cable
- Measuring electrodes, GETEST Probe
- 1 backpack, with:
- 1 smartphone
- Calibration Certificate
- Aalligator clips
- Cable for connecting the measuring electrodes
- Measurement spikes
- 2 keys
- Instruction manual
If you notice any reception issue, immediately contact the carrier and/or CIRCUTOR
after-sales service.
1.2.- TRANSPORTATION AND HANDLING
Transportation, loading and unloading and handling of the device must be carried
out with the appropriate precautions and manual or mechanical tools to avoid de-
terioration.
If the device must not be installed immediately, it must be stored in a location with
firm and level ground and the storage conditions indicated in the technical charac-
teristics section must be respected. In this case it is advisable to store the device
with its original protective packaging.
For transporting the device over short distances, the support profiles of the device to the ground facil-
itate handling through the use of pallet trucks or forklifts (Figure 1).
Figure 1: Transport with pallet truck.

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Instructions Manual
GETEST
The centre of gravity of some device may be at a considerable height.
Therefore, when it is handled by forklifts, it is advisable to hold the
device properly and not make sudden manoeuvres. It is advisable not
to suspend the device at a height greater than 20 cm from the ground.
To unload and move the device, a forklift with shovels must be used, which should cover the entire
depth of the base. Failing that, the blades must be long enough to support at least ¾ parts of that
depth.The forklift blades must be flat and rest firmly on the base.The device must be raised supporting
the blades below the profile that supports the device (Figure 2).
Figure 2: Unloading with a forklift.
1.3.- STORAGE
For the storage of the device, the following recommendations must be adhered to:
 Avoid placing it on uneven surfaces.
 Do not place it in outdoor or damp areas, or those exposed to water projection.
 Avoid heat sources (maximum ambient temperature: 45 ºC).
 Avoid saline and corrosive environments.
 Avoid placing the device in areas where there is a lot of dust or contamination by chemical
agents or other types of pollution.

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GETEST
Instructions Manual
2.- PRODUCT DESCRIPTION
GETEST is an device that measures the step and contact voltages that can appear in transformation
centres, substations and high voltage lines.
To carry out the measurements, the device injects current during a mains cycle (20 ms), providing up
to 50 A for a maximum earth resistance of 10 Ω.
The device roughly calculates the resistance of the ground to be tested.
The device features:
-1smartphone to configure and perform all the measurements through the Getest application(1)
- Detection of non-resistive ground and auto-adjustment to measure correctly.
-1 resistance switch
- 2 indication LEDs
- 1 safety key
(1) It is also possible to download the application from PlayStore to use it from any other compatible Android device.

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Instructions Manual
GETEST
3.- DEVICE INSTALLATION
3.1.- PRELIMINARY RECOMMENDATIONS
The installation, operation and maintenance of LV device must only be carried
out by authorised installers. The complementary technical instruction ITC-BT-03
develops the provisions of article 22 of the Low Voltage Electrotechnical Regulation,
establishing the conditions and requirements that must be observed for the
certification of the competence and the corresponding administrative authorisation
of the approved installers in the application field for Low Voltage Electrotechnical
Regulations.
If for the installation of the device it is necessary to intervene in areas where
there is high voltage (HV) device, keep in mind that the personnel who handle
device in that area must be authorised personnel in HV installations. Please refer to
Royal Decree 337/2014, which regulates the requirements and operation of
high-voltage installation and maintenance companies.
This device can generate voltage levels that are harmful to the human body and may
even be deadly. It has built-in protection elements that reduce the risk of electric shock
to a minimum, but even so, the necessary safety measures must be taken.
In case of risk or failure in the GETEST, do not hesitate to cancel the triggering sequence.
Ensure that nobody is in the area of influence of the current injection.
Similarly, ensure that no one is handling the cables before starting the triggering
sequence.
GETEST weighs 45 kg. This weight can be harmful to the user if it is handled by
untrained people or if it is lifted incorrectly. The device is fitted with two
ergonomic handles and it is recommended that it be carried by two people.
The manufacturer of the unit is not responsible for any damage resulting from failure by the user or
installer to observe the warnings and/or recommendations set out in this manual, nor for damage
resulting from the use of non-original products or accessories or those made by other manufacturers.
If an anomaly or malfunction is detected in the device, do not use it for taking measurements.

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GETEST
Instructions Manual
3.2.- INSTALLATION
The GETEST can be powered directly from the mains (230 V~and 50 Hz) or from a single-phase
generator set.
The required power of the generator set will come as a function of the value of the loop resistance of
the circuit.This means that the larger the loop resistance (ground to be checked plus auxiliary ground),
the more powerful the generator set must be in order to inject the current required by the user.
It is recommended that the line be protected by: 50 A B-curve Circuit Breaker or 30 A
C-curve Circuit Breaker or 16 A D-curve Circuit Breaker, according to EN 60898. In this
way, possible triggering of the protections would be avoided when making measure-
ments with the device.
In case of using lower capacity devices, the GETEST will not be able to supply the
maximum power.
Despite the fact that the GETEST, due to its current injection system, does not require high-capacity
wiring or connectors, it is recommended that the section of the power cables be as large as possible
and of the shortest possible length, to reduce voltage losses, which will affect the maximum capacity
of the device.
By means of an example, the x indicates the maximum earth resistance that can be injected according
to the current, depending on the power cable used.
Table 3: Maximum resistance depending on the wiring and the injected current.
Wiring Maximum Resistance
Length Section 5 A 10 A 25 A 50 A
2 m
3 x 1.5 mm2
120 Ω 60 Ω 24 Ω 12 Ω
25 m 120 Ω 58 Ω 20.5 Ω 8.5 Ω
50 m 116 Ω 54 Ω 17 Ω 4.5 Ω
2 m
3 x 2.5mm2
120 Ω 60 Ω 24 Ω 12 Ω
25 m 120 Ω 60 Ω 22.5 Ω 10 Ω
50 m 119 Ω 57 Ω 20 Ω 7.5 Ω
Should a coiled extension cord be used to connect the GETEST to the mains, it is nec-
essary to fully unroll it to carry out the test, likewise for the current and voltage rolls
supplied with the device.
Due to the nature of the device, an injection of several amps may cause some distur-
bance to power lines.
Depending on the quality of the supply lines, the supply voltage can drop by up to 20%
for 20 ms, it is recommended that device that is sensitive to these variations in the line
be disconnected before taking measurements.

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Instructions Manual
GETEST
3.3.- GTEST Probe: MEASUREMENT ELECTRODE
The GTEST Probe measurement electrode is an accessory that simplifies feed-through and contact
voltage measurements by replacing the 25 kg weights. The measurement electrodes allow a person to
use their weight to make the measurement.
Because the GETEST device can generate up to 600 V~, the measurement electrode is properly
insulated.
The GTEST Probe measurement electrode is an accessory whose sole use is to take
step and contact measurements with the GETEST device.
Read all warnings carefully before handling and using the electrodes.
For use by authorised or specialised personnel only.
Inspect the electrodes before each measurement and do not use them if the insulation
material is damaged or broken.
They should only be used in dry environmental conditions. Never use them in the rain.
Keep the electrode surface clean using a soft cloth and soapy water. Keep the electrode
dry at all times. Never use abrasive cleaning elements.
Do not subject the electrodes to blows or allow them to come into contact with sharp
objects that may degrade the insulation.
Store the electrodes in a dry place sheltered from rain, prolonged exposure to sunlight
or other agents that can degrade the insulation.

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GETEST
Instructions Manual
4.- OPERATION
4.1.- DESCRIPTION OF THE DEVICE
Voltage
terminals
Current injection
terminals
LED Power
LED Link
Safety key
Main switch
Power supply
connector
Resistance switch
Figure 3: Device description.
Table 4: GETEST LEDs.
LED Description
POWER Indicates that the device is powered.
LINK Indicates that the device has been wirelessly connected to the
Getest application on the Smartphone.
Table 5: GETEST switch.
Switch Description
Resistance
switch
Button to change the resistance from 1KΩ to 2kΩ.
The switch will turn on when the 2 kΩ resistor is selected.

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Instructions Manual
GETEST
4.2.- DESCRIPTION OF THE Getest APP
The Getest application consists of 2 screens: a Control screen to programme the device and another
screen for Results. A description of the control screen is shown in Figure 4.
Device Identifier
Mains frequency
Wireless connection
button
Test current to be injected
Type of test
Resistance
Maximum defect
current
Button to start the
sequence
Button to cancel the
sequence
Adjustment
Control screen Results screen
Figure 4: Control screen description.
4.3.- START-UP
1.- Connect the measurement cables and the current injection cables according to the test to be
performed (See “4.4.- TEST TYPES”).
2.- Connect the power supply cable. The device is designed to work at 230 V~, 50/60 Hz.
Make sure the voltage is correct before plugging in the device. In the event of overvoltage,
the GETEST is protected by an F250 mA fuse.
Note: Connect the device to a line or generator capable of supplying the required power:
Required power ≥ (600 V x Current to inject)
3.- Activate the main switch of the device. The POWER LED will turn on.
4.- Activate wireless connection between the smartphone and GETEST, via the smartphone settings.
The smartphone detects GETEST using the code that appears on the label located on the side of the
device.

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GETEST
Instructions Manual
MPC 5-50/Getest
0...40ºC
IP20-Class I
CAT II-300V
230±20%Vac
50/60Hz
30kW/20ms
CIRCUTOR SA - Vial Sant Jordi, s/n
08232 Viladecavalls (Barcelona) Spain
Main Module S/N
Bluetooth S/N
Date
Made in EU (Spain)
Figure 5: Getest label.
5.- Once the device is linked, open the Getest application.
Select the linked device in the Device Identifier 1 tab and press the wireless connection button 2.
6.- Put the safety key in the TEST ENABLED setting.
7.- Select the Mains frequency and the value of the Test current to be injected.
8.- Select the type of test in the Mode tab.
The device features 3 types of tests: Step Voltage, Contact Voltage and Ground Resistance.
9.- For standard testing on Step Voltage and Contact Voltage it is necessary to select the test
resistance and the maximum defect current.
In the Resistance tab, select according to ITC-RAT-13:
1 k, for “barefoot” measurement.
2 k, for “shod foot” measurement.
Once the Resistance has been selected in the application, it is also necessary to select it
in the device, pressing the resistance selection switch.
The switch will turn on indicating the selection of 2k, by default it is 1k.
In the Max defect current section, it is necessary to program the maximum defect current, according
12

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Instructions Manual
GETEST
to the protection of the centre.
The step and contact voltages are calculated using the following formulae according to the values of
the erratic voltages:
If the erratic voltages are less than 10% of the voltage to be injected:
=× . 

=+
2× . 

. 



=× . 

=+
2× . 
. 

Equation 1: V erratics < 10%
=× . 

=+
2× . 

. 



=× . 

=+
2× . 
. 

: voltage at 0 ºC.
=× . 

=+
2× . 

. 



=× . 

=+
2× . 
. 

: maximum defect current.
=× . 

=+
2× . 

. 



=× . 

=+
2× . 
. 

: current at 0 ºC.
If the erratic voltages are less than 10% of the voltage to be injected:
=× . 

=+
2× . 

. 



=× . 

=

+


2× 
.

. 

Equation 2: V erratics > 10%
=× . 

=+
2× . 

. 



=× . 

=+
2× . 
. 

: voltage at 180 ºC.
=× . 

=+
2× . 

. 



=× . 

=+
2× . 
. 

: erratic voltage.
Note: Erratic voltages are automatically measured, alerting the user if they exceed 50 V~.
10.- Press the button to start the sequence. The sequence consists of:
A.- Acoustic signal indicating the start of the test.
B.- Connection of the current output contactor.
C.- Measurement of erratic voltages.
D.- Test at 25 V ~.
E.- Injection of at least the required current.
F.- Voltage increase if the desired current is not reached.
G.- Current injection with 180º phase shift.
H.- Sample of results.
The test sequence can be cancelled at any time:
- By pressing the button .
- Changing the position of the safety key to TEST DISABLED.
- Interrupting wireless communication with the Smartphone.
- Disconnecting the thermo-magnetic switch.

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The thermo-magnetic switch and the safety key are independent devices, and act directly on the
mains supply (switch) or on the output current (safety key). In this way, even in the unlikely failure of
software/ hardware, these two devices allow to avoid the current injection.
11.- Once the test is completed, on the Results screen of the application, all the results can be
consulted Figure 6.
Figure 6: Results screen
12. The results obtained can be saved to a file, to do this click on the adjustment switch, and
access the Files section (Figure 7).
Figure 7: Save the results in a File.

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4.4.- TEST TYPES
4.4.1.- CONNECTION OF THE HARDWARE GROUND AND AUXILIARY GROUND
Connect one of the current injection terminals of the GETEST (Ip) to the hardware or protection
ground of the transformation centre or substation.
Do not confuse the hardware ground fittings with the service ground, even though in some
grounding systems these are interconnected.
Connect the other current injection terminal of the GETEST (Ip) to the auxiliary ground, which must
be performed beforehand. By means of an example, if you wish to inject 5 A, you must have a sum of
ground that does not exceed 110 Ω and to inject 50 A, this must not exceed 10 Ω.
Figure 8: Hardware ground connection details.
A good auxiliary ground must be sought out or built, since it will be the one that will
determine if the device can inject the test current.
Taking into account that the ohmic value of the hardware earth cannot be reduced,
an auxiliary ground with a reduced resistance must be sought.
In the case of using spikes to form the auxiliary ground, its ohmic value can be reduced
by adding more spikes in lockstep, moistening the ground, driving the spikes deeper, etc.
There are several options to create an auxiliary ground:
Use the neutral ground of the installation, as long as it is not connected to the hardware ground
fitting.
Drive several spikes in parallel, at a certain distance from each other.
Use ground from other elements outside the transformation centre or substation.
Supports Spikes system Neutral ground
Figure 9: Auxiliary grounds.

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Regardless of the type of test, the auxiliary ground must suffice to allow for correct
measurements to be taken.
A bad auxiliary ground adds series resistance to the circuit, which reduces the
performance of the device, thereby limiting the capacity to inject current.
If you try to take the measurements with a high auxiliary ground, an Error message
appears on the application screen, warning of this situation.
Do not use the ground spikes supplied with the device as an auxiliary ground spikes.
4.4.2. STEP VOLTAGE
Step and contact measurements are made in places where dangerous voltages may appear in the
event of a ground fault in the installation.
To carry out the measurements it is necessary to follow the following steps:
1.- Connect the current injection cables as shown in section “4.4.1.- CONNECTION OF THE HARDWARE
GROUND AND AUXILIARY GROUND”.
2.- Connect the terminals of the GTEST Probe measurement electrode to the GETEST voltage meas-
urement terminal (Um) using the cables supplied with the device.
Note: Never connect the electrode to the current injection terminals.
3.- Place the electrodes on the surface, with the metallic side in contact with the ground.
The placement of the measuring electrodes must be performed in such a way that they are 1 metre
apart, simulating the passage of a person.
1m
Figure 10: Place the electrodes on the surface.

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1 m
≥ 40 m
1 m
5 A
Auxiliary ground
Hardware ground
Measuring
electrodes
Access door
Figure 11: Step voltage Test connection.
The recommended distance between the hardware ground fitting and the
auxiliary ground is 5 times the diagonal of the substation enclosure or the transformation
centre.
The separation distances shown in the connection diagrams of this manual are
minimum distances, which will have to be increased depending on the sizing of the
transformation centre or substation.
4.- Ensure the electrodes are stable.
Despite featuring a non-slip design, the electrodes can slide on the surface. Make sure
they are stable before using them.
5.- Stand on the electrodes, stepping inside the marked surface, Figure 12.
Figure 12: Stand on the electrodes.
Always wear non-conducting safety footwear when using the electrodes.
Always stand inside the marked area.
6.- Keep your body in a fixed position that avoids motion during the measurements.

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Keep an upright and relaxed position while standing on the electrodes.
For a correct measurement, the weight of the person must be at least 50 kg.
7.- Once the connections have been made, commence the test, please refer to “4.3. START-UP”.
Measurements must be carried out respecting at all times the diagrams and warnings
outlined in this manual. Otherwise the obtained values might be erroneous.
Do not touch the metal surfaces during the measurements.
Never touch the conducting surface to be tested during the contact voltage
measurement.
4.4.3. CONTACT VOLTAGE
To carry out the measurements it is necessary to follow the following steps:
1.- Connect the current injection cables as shown in section “4.4.1.- CONNECTION OF THE HARDWARE
GROUND AND AUXILIARY GROUND”.
2.- The measurement electrodes GTEST Probe must be connected to each other via a banana cable,
and also connected to a voltage terminal on the device.
The other voltage terminal must be connected to any metal part (fence, door, housing, etc.)
transformation centre or substation that could be exposed to dangerous voltages in the event of a
ground fault.
3.- Place the electrodes on the surface, with the metallic side in contact with the ground.
The placement of the measuring electrodes must be performed in such a way that they are 1 metre
away from the conducting surface to be tested in the contact voltage test
Figure 13: Place the electrodes on the surface.