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OPERATING MANUAL
METER FOR ELECTRICAL
INSTALLATION PARAMETERS
MPI-520
SONEL S. A.
ul. Wokulskiego 11
58-100 Świdnica
Version 3.4 23.09.2014
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MPI-520 OPERATING MANUAL version 3.4
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The MPI-520 meter is a modern, easy and safe in use measuring device. Please acquaint yourself
with the present manual in order to avoid measuring errors and prevent possible problems related to
operation of the meter.
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CONTENTS
1 SAFETY .................................................................................................................... 5
2 MENU ........................................................................................................................ 6
2.1 WIRELESS TRANSMISSION ........................................................................................ 6
2.2 SETTINGS OF MEASUREMENTS ................................................................................ 7
2.2.1 Network voltage and frequency ..................................................................... 7
2.2.2 Main result of short circuit loop impedance measurement ............................ 8
2.2.3 Measurement settings .................................................................................... 8
2.2.4 Cell autoincrementing ................................................................................... 8
2.3 SETTINGS OF THE METER ........................................................................................ 9
2.3.1 LCD contrast ................................................................................................. 9
2.3.2 LCD backlight .............................................................................................. 10
2.3.3 Auto-OFF settings ....................................................................................... 10
2.3.4 Date and time............................................................................................... 10
2.3.5 Factory (default) settings ............................................................................. 11
2.3.6 Program update ........................................................................................... 11
2.4 LANGUAGE SELECTION ................................ ................................ ......................... 11
2.5 INFORMATION ABOUT MANUFACTURER ................................................................. 11
3 MEASUREMENTS ................................................................................................ 12
3.1 MEASUREMENT OF ALTERNATING VOLTAGE AND FREQUENCY ................................ 12
3.2 CHECKING CORRECTNESS OF PE (PROTECTIVE EARTH) CONNECTIONS .................. 12
3.3 MEASUREMENT OF CURRENT, ACTIVE POWER, REACTIVE POWER, APPARENT POWER
AND COSΦ COEFFICIENT...................................................................................... 13
3.4 MEASUREMENT OF SHORT CIRCUIT LOOP PARAMETERS ......................................... 14
3.4.1 Measurement of short circuit loop parameters in L-N and L-L circuit ....... 14
3.4.2 Measurement of short circuit loop parameters in L-PE circuit ................... 16
3.4.3 Measurement of short circuit loop impedance in L-PE circuit protected with
residual current device (RCD) .................................................................... 18
3.4.4 Prospective short-circuit current ................................................................. 19
3.5 MEASUREMENT OF RESISTANCE-TO-EARTH ........................................................... 20
3.6 MEASUREMENT OF RCD PARAMETERS .................................................................. 22
3.6.1 Measurement of RCD disconnection current ............................................... 23
3.6.2 Measurement of RCD disconnection time .................................................... 25
3.6.3 Automatic measurement of RCD parameters............................................... 27
3.7 MEASUREMENT OF INSULATION RESISTANCE ......................................................... 30
3.7.1 Double-lead measurement ........................................................................... 30
3.7.2 Measurements with AutoISO-1000c adapter ............................................... 33
3.7.3 Measurements by means of leads with UNI-Schuko outlet plug (WS-03 and
WS-04) ......................................................................................................... 34
3.8 LOW-VOLTAGE MEASUREMENT OF RESISTANCE ..................................................... 36
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3.8.1 Measurement of resistance of protective conductors and equipotential
bonding with ±200 mA current .................................................................... 36
3.8.2 Measurement of resistance .......................................................................... 38
3.8.3 Calibration of test leads ............................................................................... 39
3.9 CHECKING SEQUENCE OF PHASES ........................................................................ 40
4 MEMORY OF MEASUREMENT RESULT DATA........................................... 42
4.1 RECORDING MEASUREMENT RESULT DATA IN THE MEMORY ................................... 42
4.2 VIEWING MEMORY DATA ....................................................................................... 44
4.3 DELETING MEMORY DATA ..................................................................................... 46
5 DATA TRANSMISSION ................................................................ ....................... 48
5.1 COMPUTER CONNECTION ACCESSORIES ................................................................ 48
5.2 DATA TRANSMISSION WITH USB JOINT .................................................................. 48
5.3 DATA TRANSMISSION WITH OR-1 RADIO MODULE .................................................. 48
6 POWER SUPPLY .................................................................................................. 50
6.1 MONITORING OF THE POWER SUPPLY VOLTAGE ..................................................... 50
6.2 REPLACEMENT OF BATTERIES (ACCUMULATORS) ................................................... 50
6.3 CHARGING OF ACCUMULATORS ............................................................................ 51
6.4 GENERAL PRINCIPLES REGARDING USING NI-MH ACCUMULATORS ........................ 52
7 CLEANING AND MAINTENANCE .................................................................... 54
8 STORAGE .............................................................................................................. 54
9 DISMANTLING AND UTILISATION ................................................................ 54
10 TECHNICAL DATA .............................................................................................. 55
10.1 BASIC DATA ......................................................................................................... 55
10.2 ADDITIONAL DATA ................................................................ ................................ 62
10.2.1 Additional uncertainties according to IEC 61557-2 (R
ISO
) .......................... 63
10.2.2 Additional uncertainties according to IEC 61557-3 (Z) .............................. 63
10.2.3 Additional uncertainties according to IEC 61557-4 (R ±200 mA) .............. 63
10.2.4 Additional uncertainties according to IEC 61557-5 (RE) ............................ 63
10.2.5 Additional uncertainties according to IEC 61557-6 (RCD) ........................ 64
11 EQUIPMENT ......................................................................................................... 65
11.1 STANDARD EQUIPMENT ........................................................................................ 65
11.2 OPTIONAL EQUIPMENT ........................................................................................ 65
12 POSITIONS OF THE METER’S COVER .......................................................... 66
13 MANUFACTURER ............................................................................................... 66
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1 Safety
MPI-520 meter is designed for performing check tests of protection against electric shock in
mains systems. The meter is used for making the measurements the results of which determine safety of electrical installations. Therefore, in order to provide conditions for correct operation and the correctness of the obtained results, the following recommendations must be observed:
Before you proceed to operate the meter, acquaint yourself thoroughly with the present manual
and observe the safety regulations and specifications determined by the producer.
The MPI-520 meter has been designed for the purpose of measurements of earth connection and
equipotential bonding, ground resistivity, as well as clamps current measurements. Any application that differs from those specified in the present manual may result in a damage to the device
and constitute a source of danger for the user.
The device must be operated solely by appropriately qualified personnel with relevant certificates
to realise measurements of electric installation. Operation of the meter realised by unauthorised
personnel may result in damage to the device and constitute a source of danger for the user.
Using this manual does not exclude the need to comply with occupational health and safety regu-
lations and with other relevant fire regulations required during the performance of a particular type
of work. Before starting the work with the device in special environments, e.g. potentially firerisk/explosive environment, it is necessary to consult it with the person responsible for health and
safety.
It is unacceptable to operate the following:
A damaged meter which is completely or partially out of order,
A meter with damaged test leads insulation,
A meter stored for an excessive period of time in disadvantageous conditions (e.g. excessive
humidity). If the meter has been transferred from a cool to a warm environment of a high level
of relative humidity, do not realise measurements until the meter has been warmed up to the
ambient temperature (approximately 30 minutes).
It should be remembered that BAT message appearing on the display indicates that supply volt-
age of the meter is too low. This message signals also that the batteries must be replaced or the
accumulator charged. Measurements performed by means of the meter whose supply voltage is
too low are burdened with additional errors that are impossible to be estimated by the user. Such
measurements must not be relied on in order to state correctness of protection of a network tested.
Battery spill and damage to the meter may occur if discharged batteries are left in the meter.
Before measurements may commence, make sure the test leads are connected to the appropri-
ate measurement sockets.
Do not operate a meter with an open or incorrectly closed battery (accumulator) compartment or
power it from other sources than those specified in the present manual.
The R
ISO
inputs of the meter are protected electronically from overload (e.g. due to having been
connected to a live circuit) up to 440V rms for 60 seconds.
Repairs may be realised solely by an authorised service point.
ATTENTION!
Only standard and additional accessories for a given device should be used, as listed
in the "Equipment" section. Use of different accessories can lead to errors in the test
connection and can introduce additional measurement uncertainties.
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Attention:
Due to continuous development of the meter’s software, the actual appearance of the
display, in case of some of the functions, may slightly differ from the display presented
in this operating manual.
Note:
An attempt to install drivers in 64-bit Windows 8 may result in displaying "Installation
failed" message.
Cause: Windows 8 by default blocks drivers without a digital signature.
Solution: Disable the driver signature enforcement in Windows.
2 Menu
The Menu is accessible in each position of the rotary switch.
Press MENU push-button.
Select a proper item by means of ,
push-buttons. Enter a selected
option by pressing ENTER.
2.1 Wireless transmission
See chapter 5.3.
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2.2 Settings of measurements
Select a proper item by means of ,
push-buttons. Enter a selected
option by pressing ENTER.
2.2.1 Network voltage and frequency
Before measurements a nominal network voltage Un (110/190V, 115/200V, 127/220V, 220/380V,
230/400V or 240/415V) should be selected that is valid in the area where measurements are made.
This voltage value is used for calculating the values of prospective short-circuit current.
Determination of network frequency, that is the source of potential interferences, is necessary in
order to select a proper measuring signal frequency in resistance-to-earth measurements. Only the
measurement conducted with a properly selected frequency of measuring signal will ensure optimum
filtration of interferences. The meter is designed for filtration of interferences that originate from 50 Hz
and 60 Hz networks.
By means of , push-buttons select a parameter to be changed, by
means of , select network
voltage and frequency. Confirm a
choice made by means of ENTER
push-button.
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2.2.2 Main result of short circuit loop impedance measurement
By means of , push-buttons
select main result in the form of impedance ZS or prospective shortcircuit current IK; confirm a choice
made by means of ENTER pushbutton.
2.2.3 Measurement settings
The setting enables activation/deactivation of the field displaying measurement settings. Show or
hide the field with measurement settings by means of and push-buttons, press ENTER pushbutton.
2.2.4 Cell autoincrementing
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By means of , push-buttons
select the option of automatic incrementing of field number after its storing in the memory or the manual incrementing option (automatic incrementing is deactivated); confirm a
choice made by means of ENTER
push-button.
2.3 Settings of the meter
Select a suitable item by means of
, push-buttons; enter the edi-
tion of a selected option by means of
ENTER push-button.
2.3.1 LCD contrast
Select contrast value by means of
, push-buttons; confirm a
choice made by means of ENTER
push-button.
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2.3.2 LCD backlight
Use the and buttons to select the backlight off (with the
button) or time to Auto-off. Press
ENTER to validate.
2.3.3 Auto-OFF settings
The setting defines time till automatic shutdown of idle meter.
Set the time or deactivate Auto-OFF
by means of , push-buttons;
confirm a choice made by means of
ENTER push-button.
2.3.4 Date and time
By means of , push-buttons select the value to be changed (day, month, year, hour, minute).
Set a required value by means of , push-buttons. When required settings are made, press
ENTER push-button.
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2.3.5 Factory (default) settings
In order to introduce factory (default) settings, highlight YES by means of , push-buttons and
press ENTER push-button.
2.3.6 Program update
ATTENTION!
This function may be used only by the users who are fluent in operation of computer
equipment.
The guarantee does not cover defective operation of the device resulting from wrong
use of this function.
ATTENTION!
A new package of batteries should be installed before programming or the accumulator should be charged.
During programming the meter must not be switched off as well as the transmission
cable must not be disconnected.
Before updating the program, download the program that is use for programming the meter from
the manufacturer’s website (www.sonel.pl), install this program on your computer and connect the
meter to the computer.
Select Software upgrade in the MENU and follow the instructions displayed by the program.
2.4 Language selection
By means of and
push-buttons choose **Language choice** in the main MENU; press
ENTER push-button.
Select a required language by means of and push-buttons; press ENTER push-button.
2.5 Information about manufacturer
By means of and
push-buttons choose Manufacturer info in the main MENU; press
ENTER push-button.
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3 Measurements
Remarks:
- A progress bar is displayed during long measurements.
- The content of this chapter should be thoroughly familiarized with since it describes the meter circuits, the methods of measurements and basic principles concerning interpretation of measurement
results.
- Result of the latest measurement is remembered by the meter until a next measurement is started
or measurement settings are changed or the measuring function is changed by means of the rotary
switch or the meter is switched off. The result of the latest measurement is displayed on the screen
for 20 seconds. It can be recalled by pressing ENTER push-button.
WARNING:
During measurements (short circuit loop, RCD), earthed parts and parts accessible in
the electrical installation being tested must not be touched.
WARNING:
During a measurement, switching of the range switch is forbidden because it may
damage the meter and pose a threat to the user.
3.1 Measurement of alternating voltage and frequency
The meter measures and displays alternating voltage and frequency of the network in all measur-
ing functions except RE, RX, R±200mA, R
ISO
-conductor. For
L
1
L
2
L
3
and R
ISO
functions, only voltage is
displayed. This voltage is measured for the frequencies within the range of 45..65 Hz as True RMS. If
a frequency measured is outside the specified range, a proper message is displayed instead of the
frequency value: f<45 Hz or f>65 Hz. Voltage is displayed as the main result only for U
L-N,L-L
, Z
L-N,L-L
,
U
L-PE ZL-PE
and U,I,P,Q,S,f,cosφ functions for Only U mode selected. The test leads should be con-
nected as for a given measuring function.
3.2 Checking correctness of PE (protective earth) connections
or
PE
When the meter is connected according to the drawing, touch the touch electrode with a finger
and wait for about 1 second. When voltage if found on PE, the device displays PE! message (error in
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the installation; PE lead is connected to the phase lead) and generates a continuous audio signal.
This possibility is available for all measuring functions that apply to residual current devices (RCD)
and short circuit loop.
Remarks:
WARNING:
When phase voltage is detected on PE lead, measurements must be immediately
stopped and a fault in the installation must be removed.
- The person making a measurement must ensure that he/she is standing on a non-insulated floor
during the measurement; otherwise the result of the measurement may be incorrect.
- The threshold value, which triggers the signal of exceeded allowable voltage on PE conduit, is approximately 50 V.
3.3 Measurement of current, active power, reactive power, apparent
power and cosφ coefficient
Set the rotary switch of function selection at U,I,P,Q,S,f,cosφ position.
Press F1 push-button. Select
“U,I,f,cos,P,Q,S” by means
of and push-buttons
and press ENTER pushbutton. (If you want to measure voltage or current only,
select a proper position.)
Assemble the system according to the below drawing.
NL
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Read out the results.
3.4 Measurement of short circuit loop parameters
If there are residual current devices in the network tested, they should be bypassed by
bridging for the period of impedance measurement. However, it should be remembered that the circuit tested is modified in this way and the results obtained may slightly differ from the actual results.
Each time after completion of measurements, modifications introduced to the installation for the period of measurements should be removed and operation of the residual
current device should be checked.
The above remark does not apply to measurements of short circuit loop impedance
with the use of Z
L-PE
RCD function.
3.4.1 Measurement of short circuit loop parameters in L-N and L-L circuit
Set the rotary switch of function selection at Z
L-N,L-L/UL-N,L-L
position.
Press F1 push-button if lead
length L needs to be selected.
Select lead length by means
of and push-buttons
and press ENTER pushbutton.
Connect test leads according to the drawing
a) for measurement in L-N circuit or
b) for measurement in L-L circuit
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NL
lub
a) b)
N
L
The meter is
ready for measurement.
Make measurement by pressing START
push-button
Read out the result.
The result is displayed on the screen for 20s.
The result can be recalled by pressing ENTER push-button.
Remarks:
- The result can be stored in the memory (see point 4.1).
- When many measurements are made in short time intervals, the meter may emit a large amount of
heat. As a result of this, the housing of the device may become hot. This is a normal phenomenon
and the meter is equipped with the protection against excessive temperature.
- Minimum interval between successive measurements is 5 seconds. This minimum interval require-
ment is controlled by the meter. A next measurement can be made only when READY! message ap-
pears on the screen.
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Additional information displayed by the meter
READY!
The meter is ready for measurement.
L-N!
U
L-N
voltage is incorrect for making a measurement.
L-PE!
U
L-PE
voltage is incorrect for making a measurement.
N-PE!
U
N-PE
voltage exceeds allowable value of 50V.
Phase connected to N terminal instead of L terminal (for
example, exchange of L and N in the mains socket.
Temperature exceeded.
f!
Network frequency is outside the range of 45...65 Hz.
Error during
measure
A correct result can not be displayed.
Loop circuit mal-
function!
The meter should be serviced.
No U
L-N
!
Lack of U
L-N
voltage before the principal measurement.
U>500 V! and con-
tinuous audio signal
Before measurement, voltage at test terminals exceeds
500 V.
3.4.2 Measurement of short circuit loop parameters in L-PE circuit
Set the rotary switch of function selection at Z
L-PE/UL-PE
position.
Press F1 push-button if L
lead length needs to be selected.
Select a lead length by
means of and pushbuttons and press ENTER
push-button.
Connect test leads according to one of the drawings.
NLorPE
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Checking effectiveness of protection against electric shock of the meter housing in
case of: a) TN network b) TT network
0
a)
b)
L PE
The meter is
ready for measurement.
Make measurement by pressing START
push-button.
Read out the result.
The result is displayed on the screen for 20s.
The result can be recalled by pressing ENTER push-button.
Remarks:
- Double lead measurement is possible when a test lead other that the lead with a mains socket is se-
lected.
- Remaining issues connected with the measurements as well as the messages displayed are the
same as those described for measurements in L-N circuit or L-L circuit.
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3.4.3 Measurement of short circuit loop impedance in L-PE circuit protected
with residual current device (RCD)
Set the rotary switch of function selection at Z
L-PE
RCD position.
Press F1 push-button if L
lead length needs to be selected.
Select a lead length by
means of and pushbuttons and press ENTER
push-button.
Connect test leads according to one of the drawings.
Remarks:
- Maximum measurement time is about 32 seconds. The measurement can be interrupted by press-
ing ESC push-button.
- In the electrical installations in which 30 mA - rated residual current devices are used, it may happen
that the sum of leakage currents of the installation and the test current will trigger RCD. In such a situation, one should try to reduce leakage current of the network being tested (for example, by disconnecting load points).
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- Remaining issues connected with the measurements as well as the messages displayed are the
same as those described for measurements L-PE circuit.
- The function works for residual current devices of nominal current ≥ 30 mA.
3.4.4 Prospective short-circuit current
The meter always measures impedance. The short-circuit current is calculated according to the
following formula:
S
n
k
Z
U
I
where: Un – nominal voltage of the network being tested selected in MENU, ZS – impedance measured.
On the basis of Un nominal voltage selected (point 2.1.1), the meter automatically recognizes
the measurement at phase voltage or phase-to-phase voltage and takes it into account in the calculations.
If the voltage of the network being tested is outside the tolerance range, the meter will not be
able to determine a proper nominal voltage for the short-circuit current calculation. In such a case,
horizontal dashes will be displayed instead a short-circuit current value. The following diagram shows
voltage ranges for which short-circuit current value is calculated.
230
400
440
U [V]
207
253
360
115
127
180
200
220
220
380
418
198
242
342
373
415
440
216
240
264
103
440
U [V]
440
U [V]
U [V]
U =115V
n
U =220V
n
U =230V
n
U =240V
n
110
121
171
190
209
99
440
U [V]
U =110V
n
127
140
198
220
242
114
440
U [V]
U =127V
n
99
99
99
99
99
Voltage range for which impedance
measurement is made
U voltage ranges for which shortcircuit current value is calculated
U
L-L
voltage ranges for which short-
circuit current value is calculated
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3.5 Measurement of resistance-to-earth
The three-pole measuring method is the basic type of resistance-to-earth measurement.
Disconnect earth electrode being tested from
the installation of the
building.
Set the rotary switch of function selection at RE position.
E SH
The current electrode (driven into earth) should be connected to H socket of the meter.
The voltage electrode (driven into earth) should be connected to S socket of the meter.
The earth electrode being tested should be connected to E socket of the meter.
The earth electrode being tested and the current electrode and the voltage electrode should be
located in one line.
The meter is ready
for measurement.
Value of interference
voltage UN can be
read on the display.
Press F1 push-button to change test voltage.
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Select test voltage by means of push-buttons and
confirm by pressing ENTER.
Press START push-button to start the measurement.
Read out the result.
Resistance of current electrode
Resistance of voltage electrode
Value of additional uncertainty
caused by resistance of the electrodes
S
Repeat the measurements (points 3, 7, 8) shifting the
voltage electrode several metres: the electrode should be
shifted farther and closer to the earth electrode being
tested. If RE measurement results differ from one another
by more than 3%, the distance of the current electrode
from the earth electrode being tested should be considerably increased and the measurements should be repeated.
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Remarks:
Measurement of resistance-to-earth may be carried out if voltage of interferences does not exceed 24 V. Voltage of interferences is measured up to the
level of 100 V but above 50 V it is signalled as dangerous. The meter must not
be connected to voltages exceeding 100 V.
- Particular attention should be paid to quality of connection between the object being tested and the
test lead – the contact area must be free from paint, rust, etc.
- If resistance of test probes is too high, RE earth electrode measurement will be burdened with additional uncertainty. Particularly high uncertainty of measurement occurs when a small value of resistance-to-earth is measured with probes that have a weak contact with earth (such a situation occurs frequently when the earth electrode is well made and the upper soil layer is dry and slightly conductive). In such a case, the ratio between resistance of the probes and resistance of the earth electrode tested is very high and consequently, uncertainty of measurement that depends on this ratio is
also very high. The uncertainty is displayed on the screen in the column of additional results. In order
to reduce the uncertainty, it is recommended to improve the contact between the probe and soil, for
example, by dampening with water the place where the probe is driven into earth, driving the probe into earth in a different place or using a 80 cm-long probe. Test leads should also be checked as follows: check whether their insulation is not defective and whether the lead – banana plug – probe contact areas are not corroded or loosened. In majority of cases the measurement accuracy achieved is
satisfactory. However, one should always be aware of uncertainty value the measurement is burdened with.
Additional information displayed by the meter
RE>1,99 kΩ
Measuring range is exceeded.
UN!
Voltage at test terminals is higher than 24 V but lower than
50 V, measurement is blocked.
UN>50 V! and contin-
uous audio signal
Voltage at test terminals is higher than 50 V.
NOISE!
Too low value of signal/noise ratio.
LIMIT!
Error caused by resistance of electrodes > 30%. (Measured
values are used in calculation of uncertainty.)
Interruption in measuring circuit or resistance of test probes
is higher than 60 kΩ.
Electrode resistance
>50 kΩ
Resistance of electrodes within the range of 50...60 kΩ.
Aborted!
Measurement has been interrupted with ESC key button.
3.6 Measurement of RCD parameters
Attention:
Measurement of UB, RE is always conducted with the use of sinusoidal current 0.4I
n
regardless of the settings concerning waveform and multiplication factor I
n
.
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3.6.1 Measurement of RCD disconnection current
Set the rotary switch of function selection at IA
position.
Press F1
I
n
push-button
and move to I
n
selection.
Press F2 push-button
and move to selection of current waveform.
Press F3
G S
push-button
and move to selection of
RCD type.
Select an appropriate item by means of and
push-buttons and confirm by pressing
ENTER.
Move to selection of a second group of parameters by
means of and push-buttons.
Press F1
U
L
push-button
and move to selection of UL.
Press F2
MODE
push-button
and move to selection of
measurement mode.
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Select an appropriate item by means of and
push-buttons and confirm by pressing
ENTER.
Connect the device to the installation
according to the drawing.
or
PENL
The meter is ready for
measurement.
Value of network voltage and frequency can
be read on the display.
Press START to begin measurement.
Read out the result.
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Remark:
- Measurement of tAI disconnection time for selective RCD is not available.
Additional information displayed by the meter
UB>UL!
The touch voltage exceeds a preset UL threshold value.
!
! placed on the right side of the result means that RCD is
out of order
No U
L-N
!
Lack of neutral lead that is necessary for IΔn constant and
pulsed with direct current offset
The remaining information is the same as for fault loop measurement (first 7 positions under point
3.4.1).
3.6.2 Measurement of RCD disconnection time
Set the rotary switch of function selection at tA
position.
Press F1
I
n
push-button
and move to selection of In.
Press F2
xI
n
push-button
and move to selection of In.
multiplication factor
Press F3
push-button
and move to selection of current waveform.
Select an appropriate item by means of and
push-buttons and confirm by pressing
ENTER.
Move to selection of a second group of parameters by
means of and push-buttons.
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Press F1
U
L
push-button
and move to selection of UL.
Press F2
G S
push-button
and move to selection of
RCD type.
Press F3
MODE
push-button
and move to selection of
measurement mode.
Mark an appropriate position by means of and
push-buttons and confirm by pressing
ENTER.
Connect the device to the installation according to the drawing.
or
PENL
The meter is ready for
measurement.
Value of network voltage and frequency can
be read on the display.
Press START to begin measurement.
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27
Read out the result.
Remarks and information are the same as for IA measurement.
3.6.3 Automatic measurement of RCD parameters
The meter enables automatic measurement of the following: RCD disconnection times (tA), disconnection current (IA), touch voltage (UB) and resistance-to-earth (RE). Additionally, there is a possibility of automatic measurement of short circuit loop impedance Z
L-PE
RCD in a manner described in
point 3.4.3. In the automatic mode, it is not necessary to actuate a measurement each time by means
of START push-button. The operator of the meter only has to initiate a measurement by pressing
START push-button once and switch RCD on each time after it is triggered. The below table shows
maximum number of parameters measured and sequence of measurements for preset value of rated
current In, selected current waveform, type of RCD (standard / selective / short-time delay) and UL
voltage.
No.
Parameters meas-
ured
Measurement conditions
I
n
multiplica-
tion factor
Initial phase (polarization)
1.
Z
L-PE
2.
UB, RE
3.
tA
0,5I
n
positive
4.
tA
0,5In
negative
5.*
tA
1I
n
positive
6.*
tA
1I
n
negative
7.*
tA
2I
n
positive
8.*
tA
2I
n
negative
9.*
tA
5I
n
positive
10.*
tA
5I
n
negative
11.*
IA positive
12.*
IA negative
* points in which an efficient RCD should disconnected
Set the rotary switch of function selection at
AUTO position.
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28
Press F1
I
n
push-button
and move to I
n
selection.
Press F2
push-button
and move to selection of current waveform.
Press F3
G S
push-button
and move to selection of
RCD type.
Select an appropriate item by means of and
push-buttons and confirm by pressing
ENTER.
Move to selection of a second group of parameters by
means of and push-buttons.
Press F1
U
L
push-button
and move to selection of UL.
Press F2
MODE
push-button
and move to selection of
measurement mode.
Press F3
WIRE
push-button
and move to selection of L
lead length (at Z
L-PE
RCD
measurement).
Select an appropriate item by means of and
push-buttons and confirm by pressing
ENTER.
Connect the device to the installation according to the drawing.
or
PENL
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29
The meter is ready for measurement.
Value of network voltage and frequency can be read on the display.
Press START push-button to start the measurement. If such
measurements are selected that require triggering of RCD,
operator of the meter should be in the vicinity of RCD and
switch it on each time after it is triggered until the measurements are completed (a longer interruption may signify completion of the measurements).
Progress of measurement process
is shown by progress bars: lower
bar – total cycle; upper bar –
measurement of Z
L-PE
RCD and IA.
Read out the result.
Groups of results displayed are changed by means
of F3 and F4 push-buttons.
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30
Remarks:
- The measurement is interrupted, if during measurement of UB/RE, RCD has been triggered at 0.5I
n
current or if RCD has not been triggered in other cases or if a preset value of safe voltage UL has
been exceeded.
- Store the result in the memory (see point 4.1) or press ESC push-button and display only network
voltage and frequency.
- Remaining remarks and information are the same as for IA and Z
L-PE
measurement.
3.7 Measurement of insulation resistance
WARNING:
The object tested must not be live.
3.7.1 Double-lead measurement
Set the rotary switch of function selection at R
ISO
position.
Press F1 push-button and
move to selection of test voltage UN.
Select an appropriate item by means of
and
push-buttons and confirm
by pressing
ENTER.
Connect test leads according to the drawing.
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31
R
X
R+
ISO
R-
ISO
The meter is ready
for measurement.
Press and hold START push-
button.
Measurement is performed continuously when the push-button is held
in the pressed position.
In order to maintain the
measurement, press ENTER pushbutton while holding START push-
button in the pressed position. In
order to interrupt the mesaurement,
press START push-button again.
View of the screen
during measurement
performed with the
use of ENTER pushbutton.
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32
Read out the result.
Remarks:
During measurements of insulation resistance, dangerous voltage up to 1 kV occurs at
the ends of test leads of MPI-520 meter.
It is forbidden to disconnect test leads and to change the position of the function
switch before completion of measurement. Failure to obey the above instruction will
lead to high voltage electric shock and make it impossible to discharge the object
tested.
- The meter emits a continuous audio signal until test voltage reaches 90% of the preset value (and
also when 110% of the preset value is exceeded).
- After completion of measurement, the capacitance of the object tested is discharged by shorting
R
ISO
+ and R
ISO
- terminals with resistance of 100 k.
Additional information displayed by the meter
Test voltage is present on terminals of the meter.
NOISE!
Interference voltage occurs on the object being tested.
Measurement is possible but may be burdened with additional uncertainty.
LIMIT I!
Activation of current limit. The symbol displayed is accompanied by a continuous audio signal.
Wrong accessory is connected to test jack (other than WS03 or WS-04 or AutoISO-1000c).
WS-03 or WS-04 lead for three-lead measurements is
connected (measurement at L-PE, L-N and N-PE terminals).
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33
3.7.2 Measurements with AutoISO-1000c adapter
Set the rotary switch of function selection at
R
ISO
position.
Adapter
AutoISO
1000c
Connect AutoISO-1000c adapter.
The meter detects this fact automatically and changes the appearance of the screen.
Press F1
U
N
push-button
and move to selection of test
voltage UN.
Press F2
MODE
push-button
and move to selection of lead
type (3-, 4- or 5-wire lead).
Press F3
TIME
push-button
and move to selection of a
single measurement time.
Select an appropriate item by means of and
push-buttons and confirm by pressing
ENTER.
Connect AutoISO-1000c adapter to the lead tested.
Adapter
AutoISO
1000c
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34
Press START push-buttons to start measurement. First,
checking of voltages on particular pairs of wires is performed.
If any of the voltages exceeds allowable voltage, the
symbol of this voltage with “!” mark is displayed (e.g. U
N-
PE
!) and the measurement is interrupted.
Read out the results.
Groups of results displayed
are changed by means of
F3 and F4 push-buttons.
Remarks:
- Remarks and messages the same as in point 3.7.1.
3.7.3 Measurements by means of leads with UNI-Schuko outlet plug (WS-03
and WS-04)
Set the rotary switch of function selection at
R
ISO
position.
WS-03
Connect WS-03 lead or WS-04
lead with UNI-Schuko outlet plug.
The meter detects this fact automatically and changes the appearance of the screen.
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35
Press F1
U
N
pushbutton and move to selection
of test voltage UN.
Press F2
L N
pushbutton and move to selection
of lead sequence: L, PE, N
or N, PE, L.
Press F3
TIME
pushbutton and move to selection
of a single measurement
time.
Select an appropriate item by means of and
push-buttons and confirm by pressing
ENTER.
Remark: If it is known that L and N leads in the socket
are exchanged, after pressing F2 push-button, the sequence of (N)(PE)(L) can be selected in order to ensure
that the meter provides correct results of measurements.
Connect WS-03 lead or WS-04 lead to the socket tested.
WS-03
Press START push-buttons to
start measurement. If any of the
voltages exceeds allowable voltage value (50 V), Object under
voltage message is displayed and
the measurement is blocked.
View of the
screen during
measurement.
Symbol of the resistance being
measured is displayed.
Progress bar
shows % of progress of total
measurement.
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36
Read out the results.
Remarks:
- Remarks and messages are the same as in point 3.7.1.
3.8 Low-voltage measurement of resistance
3.8.1 Measurement of resistance of protective conductors and equipotential
bonding with ±200 mA current
Set the rotary switch of function selection at RX R
±200 mA
position.
Press F1 push-button and move to selection of
measurement mode.
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37
Select R
CONT
±200 mA item by means of
and
push-buttons and confirm by press-
ing
ENTER.
Connect the meter to the object tested.
Measurement starts automatically.
N
L
Read out the results.
Press START push-button in order to start a
next measurement without disconnecting test
leads from the object.
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38
Remarks:
ATTENTION!
When “Object under voltage” message is displayed, the object tested is live. The
measurement is blocked. The meter must be immediately disconnected from the
object.
Additional information displayed by the meter
NOISE!
Interference voltage occurs on the object tested. The
measurement is possible however it will be burdened with
additional uncertainty that is specified in the technical data.
3.8.2 Measurement of resistance
Set the rotary switch of function selection at RX R
±200 mA
position.
Press F1 push-button and move to selection of
measurement mode.
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39
Select RX position by means of and
push-buttons and confirm by pressing
ENTER.
Connect the meter to the object tested.
N
L
Read out the result.
Remarks:
- Remarks and messages are the same as in point 3.8.1.
3.8.3 Calibration of test leads
In order to eliminate the impact of the resistance of test leads on measurement result, the com-
pensation (autozeroing) of resistance may be performed. For this purpose, RX and R
±200 mA
functions
have AUTOZERO sub-function.
Press F2 push-button.
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40
Follow the instructions displayed on the screen.
NL
AUTOZERO message appears that confirms completion of test
leads calibration.
In order to remove the calibration made (return to default calibration), perform the above-mentioned activities with test leads open.
3.9 Checking sequence of phases
Set the rotary
switch of
function selection
at
L
1
L3L
2
L
1
L3L
2
position.
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41
Connect the meter to the installation according to the drawing.
L3
L2
L1
The arrow rotates
to the right: correct
sequence of phases; the arrow rotates to the left: incorrect sequence of
phases.
Phase-to-phase
voltages.
Signalling the
presence of
individual phases.
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4 Memory of measurement result data
MPI-520 meters are equipped with the memory that can store 50,000 single measurement results.
The whole memory is divided into 10 memory banks each of them containing 99 memory cells.
Thanks to dynamic memory allocation, each of the memory cells can contain different quantity of single measurement results, depending on the needs. Optimal use of the memory can be ensured in this
way. Each measurement result can be stored in a memory cell marked with a selected number and in
a selected memory bank. Thanks to this, the user of the meter can, at his/her option, assign memory
cell numbers to individual measurement points and the memory bank numbers to individual objects as
well as the user can perform measurements in any sequence and repeat them without losing other
data.
Memory of measurement result data is not deleted when the meter is switched off. Thanks to
this, the data can be later read or sent to a computer. Also, the number of a current memory cell or
memory bank is not changed.
Remarks:
- Results of measurements performed for all measuring functions can be stored in one memory cell.
- When autoincrementing of memory cell number is deactivated, a single result (group of results)
stored into the memory does not increase automatically the number of the current memory cell in order to enable storing in this memory cell successive measurement results concerning a given measurement point (object). If series of measurements are made for one function, autoincrementing of
memory cell number can be set in MENU. Such autoincrementing takes place after each case of data
storing in the memory (activation of autoincrementing – point 2.1.5).
- Only the results of the measurements started by pressing START key button can be stored in the
memory (except autozeroing in low-voltage measurement of resistance).
- Deletion of the memory is recommended after reading the data or before performing a new series of
measurements that may be stored into the same memory cells as the previous ones.
4.1 Recording measurement result data in the memory
Press ENTER after completion of measurement.
The frame indicates that at
least one result is stored in
the cell.
The frame indicates at least one
cell in the bank has measurement
results stored in it.
Type of measurement result to
be stored
The cell is free for a
given type of measurement.
There are 6 results or
one result consisting
of 6 screens in the
cell.
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43
The cell is occupied
for a given type of
measurement.
Measurement (memory cell) is selected by means of and
push-buttons; memory bank is selected by means of
and
push-buttons
.
Storing of data in the memory is performed by means of ENTER
push-button.
If you try to store data in an occupied memory cell, the following
warning message will appear:
After selection of an option by means of and push-buttons,
press ENTER push-button.
Remarks:
- In case of RCD the above warning message will appear also when an attempt is made to store a result of specific measurement (or result component) that has been made at different preset In current
or for a different preset type of RCD (standard / short-time delay / selective) than the measurements
the results of which are already stored in this cell, despite the fact that the memory space designated
for this result component may be free. When results of measurements made for a different type of
RCD or a different In current are stored, the results concerning a given RCD that have been stored
previously will be lost.
- Complete set of results (main result and supplementary results) for a given measuring function and
preset measurement settings are stored in the memory.
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44
4.2 Viewing memory data
Set the rotary switch of function selection at MEM position.
Select “Memory browsing” by means
of and push-buttons.
Press ENTER push-button.
First of the four results stored
in this cell.
Select memory bank by means of and push-buttons; select a memory cell by means of and push-buttons; par-
ticular results or components of the result are selected by
means of F3 and F4 push-buttons.
The following table specifies the sequence of data storing for individual measurement results.
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45
No.
Main result
Supplementary results
1
Z
L-PE
RCD or IK
IK or Z
L-PE
RCD
R
XL
U
L-PE
f
2
tA at 0.5In, sinusoidal current, positive and negative initial phase
UB
RE
U
L-N
3
tA at 1In, sinusoidal current, positive and negative
initial phase
tA at 2In, sinusoidal current, positive and negative
initial phase
tA at 5In, sinusoidal current, positive and negative
initial phase
4
IA, sinusoidal current, positive and negative initial
phase
5-7
as above for unidirectional pulsed current and
positive and negative polarization
8-
10
as above for unidirectional pulsed current with direct current offset and positive and negative polarization
11-
13
as above for direct current and positive and negative polarization
14
Z
L-N
(Z
L-L
) or IK
IK or Z
L-N
(Z
L-L
)
R
XL
U
L-N (UL-L
)
f
15
Z
L-PE
or IK
IK or Z
L-PE
R
XL
U
L-PE
f
16
RE
RH
RS
δ
17
R
ISO
U
ISO
[LIMIT I!]
[NOISE !]
or
18
CABLE 3: R
ISO
(N-PE),
R
ISO
(L1-PE),
R
ISO
(L1-N),
U
ISO
, [LIMIT I], [NOISE]
U
ISO
, [LIMIT I], [NOISE]
U
ISO
, [LIMIT I], [NOISE]
or
19
CABLE 4: R
ISO
(L1-N), R
ISO
(L2-N),
R
ISO
(L3-N),
U
ISO
, [LIMIT I], [NOISE]
U
ISO
, [LIMIT I], [NOISE]
U
ISO
, [LIMIT I], [NOISE]
20
CABLE 4: R
ISO
(L1-L2),
R
ISO
(L1-L3),
R
ISO
(L2-L3),
U
ISO
, [LIMIT I], [NOISE]
U
ISO
, [LIMIT I], [NOISE]
U
ISO
, [LIMIT I], [NOISE]
or
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46
No.
Main result
Supplementary results
21
CABLE 5: R
ISO
(N-PE),
R
ISO
(L1-PE),
R
ISO
(L1-N),
U
ISO
, [LIMIT I], [NOISE]
U
ISO
, [LIMIT I], [NOISE]
U
ISO
, [LIMIT I], [NOISE]
22
CABLE 5: R
ISO
(L2-N),
R
ISO
(L3-N),
R
ISO
(L1-L2),
U
ISO
, [LIMIT I], [NOISE]
U
ISO
, [LIMIT I], [NOISE]
U
ISO
, [LIMIT I], [NOISE]
23
CABLE 5: R
ISO
(L1-L3),
R
ISO
(L2-L3),
R
ISO
(L2-PE),
U
ISO
, [LIMIT I], [NOISE]
U
ISO
, [LIMIT I], [NOISE]
U
ISO
, [LIMIT I], [NOISE]
24
CABLE 5: R
ISO
(L3-PE),
U
ISO
, [LIMIT I], [NOISE]
25
R 200 mA
RF
RR
[NOISE !]
Remarks:
- While viewing the memory, empty measurements and memory banks are not accessible. “Measurement 1/20” signifies the first of the 20 measurements; measurements 21…99 are empty and inaccessible. The same principle applies to memory banks. If the memory is stored in a non-continuous
manner, empty measurements and memory banks are omitted while the memory is being viewed.
4.3 Deleting memory data
Set the rotary switch of function selection at MEM position.
Select “Memory erasing” by means of
and push-buttons.
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47
Press ENTER push-button.
Select deletion of the whole memory, a
memory bank or a measurement by
means of and push-buttons.
Follow the instruction displayed by the meter.
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48
5 Data transmission
Remarks:
- Data transmission is not possible during the charging of accumulators.
5.1 Computer connection accessories
What is necessary in order to operate the meter with a computer is additional accessories, namely a USB cable and appropriate software. If the required accessories such have not been purchased
along with the meter, then they are available from the manufacturer or an authorised distributor.
The accessories may be used in case of many devices manufactured by SONEL S.A. which are
equipped with the USB interface.
Detailed information regarding software is available from the manufacturer or an authorised distributor.
5.2 Data transmission with USB joint
1. Set the rotational function selector at MEM.
2. Connect the cable to the USB port of the computer and the USB socket of the meter.
3. Start the programme.
5.3 Data transmission with OR-1 radio module
1. Connect OR-1 module to the USB socket of the PC.
2. Start data filing programme.
3. Select Wireless transmission in the main MENU of the meter
or set the function switch to MEM and press F1.
4. If a PIN code change is necessary, select Modify PIN code.
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49
5. Set the required code with the cursors.
The same code must be entered in the computer programme. It is used for securing transmission.
6. To start transmission, select Wireless transmission in the MENU or press F1 in the MEM position. The following messages will be displayed: Connecting and then Connection active. If it is impossible to establish connection the message Wireless connection lost will appear. Once the connection is established, follow the programme manual for data filing.
Note:
Standard pin for OR-1 is the „123”. Settings in the meter according to section 2.2.
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6 Power supply
6.1 Monitoring of the power supply voltage
The level of the charge of the batteries or accumulators is currently indicated by the symbol in the
right upper corner of the display:
Bartery charged.
Bartery low.
Bartery fully discharged.
Bartery fully discharged,
measuring blocked.
Note:
The displayed BAT symbol means insufficient power supply voltage and the need to charge the
accumulators,
Measurements realised with an insufficient meter power supply voltage are distorted with addi-
tional errors which are impossible to ascertain by the user and thus they cannot constitute a basis
for a conclusion of correctness of the tested earthing system.
6.2 Replacement of batteries (accumulators)
MPI-520 meter is powered by 4 batteries (LR14). It can be also powered by the manufacturer’s
accumulator package (SONEL NiMH).
Battery charger is installed inside the meter and cooperates only with the manufacturer’s accumulator package. The charger is powered by external power supply adapter. It can be also powered from
the car cigarette lighter socket. The accumulator package as well as the power supply adapter belong
to additional accessories and can be purchase separately.
WARNING:
If the test leads are left in the sockets during replacement of the batteries or the package of accumulators, there is a risk of electric shock with a dangerous voltage.
In order to replace the package of accumulators it is necessary to do the following:
Remove all the test leads from the sockets and turn the meter off,
Remove the four screws of the accumulators/batteries compartment (in the lower part of the cas-
ing),
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51
Remove the compartment,
Remove the compartment cover and remove the accumulators,
Insert a new package of accumulators,
Insert (snap) the compartment cover,
Insert the compartment in the meter,
Replace the four screws of the accumulators/batteries compartment.
NOTE!
Do not use the meter when the accumulator compartment is removed or open or power
it from other sources than those mentioned in the present manual.
6.3 Charging of accumulators
Charging commences once the power supply has been connected to the meter regardless of the
fact whether the meter is on or off. During charging the screen looks as it is presented in the following
illustration. The accumulators are charged in accordance with the algorithm of „quick charge” – this
process permits to reduce the duration of charging to approximately four hours. The end of the process of charging is signalled by: Charging finished. In order to turn the device off, remove the power
supply plug of the charger.
Operating mode
Messages regarding the
process of charging
Charging progress, the changing interior section symbolizes charging
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52
Note:
- As a result of interferences in the network it is possible that the process of charging of accumulators
will finish too fast. In the case too short a time of charging is detected it is necessary to remove the
plug of the charger and start charging anew.
Additional informations displayed by the meter
Message
Cause
Proceeding
Battery connection error!
Excessive voltage
at the accumulator
package during
charging.
Check the contacts of the accumulator package. Should the
problem persist, replace the
package.
No battery!
No communication
with the accumulator controller or batteries compartment
put in.
Check the contacts of the accumulator package. Should the
problem persist, replace the
package. Put the accumulators
compartment instead of batteries.
Battery temperature too
low!
The ambient temperature is lower
than 10C
It is not possible to charge the
accumulators correctly in such a
temperature. Place the meter in
a warm place and commence the
charging mode anew.
The present message may be
displayed also in the case of
deep discharging of the accumulators. It is then recommended to
try to turn the charger repeatedly.
Precharge error
A damaged or
deeply discharged
accumulator package
The message is displayd for a
while and then the precharge
process begins again. If after
several attempts the message:
Battery temperature too high!
is displayd, replace the package.
6.4 General principles regarding using Ni-MH accumulators
- If you do not use the device for a prolonged period of time, then it is recommended to remove the
accumulators and store them separately.
- Store the accumulators in a dry, cool and well ventilated place and protect them from direct sunlight.
The temperature of the environment in the case of prolonged storage should not exceed 30ªC. If the
accumulators are stored for a long time in a high temperature, then the occurring chemical processes
may reduce their lifetime.
- Accumulators NiMH resist normally 500-1000 charging cycles. The accumulators reach their maximum capacity after being formatted (2-3 charge and discharge cycles). The most important factor
which influences the lifetime of an accumulator is the depth of discharge. The deeper the discharge of
the accumulator, the shorter its lifetime.
- The memory effect is limited in the case of NiMH accumulator. These accumulators may be charged
at any point with no serious consequences. However, it is recommended to discharge them completely every few cycles.
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53
- During storage of Ni-MH accumulators they are discharged at the rate of approximately 30% per
month. Keeping accumulators at high temperatures may accelerate this process even 100%. In order
to prevent excessive discharge of accumulators, after which it would be necessary to format them, it
is recommended to charge the accumulators from time to time (even if not in use).
- Modern fast chargers detect both too low and too high a temperature of accumulators and react to
the situation adequately. Too low a temperature should prevent the start of the process of charging,
which might damage the accumulator irreparably. An increase of the temperature of the accumulator
is a signal to stop charging and is a typical phenomenon. However charging at a high temperature of
the environment apart from reducing the lifetime causes an accelerated increase of the temperature
of the accumulator, which will be not charged to its full capacity.
- Remember that in the case of quick charging accumulators are charged to approximately 80% of
their capacity; better results may be obtained if the process of charging is continued: the charger goes
then to the phase of charging with a low current and after next couple of hours the accumulators are
charged to their full capacity.
- Do not charge or use accumulators in extreme temperatures. Extreme temperatures reduce the lifetime of batteries and accumulators. Avoid placing devices powered from accumulators in very hot environments. The nominal working temperature must be absolutely observed.
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7 Cleaning and maintenance
NOTE!
Apply solely the maintenance methods specified by the manufacturer within the present manual.
The casing of the meter may be cleaned with a soft, damp cloth using all-purpose detergents. Do
not use any solvents or cleaning agents which might scratch the casing (powders, pastes, etc.).
Clean the probe with water and dry it. Before the probe is stored for a prolonged period of time it
is recommended to grease it with any machine lubricant.
The reels and test leads should be cleaned with water and detergents, and then dried.
The electronic system of the meter does not require maintenance.
8 Storage
In the case of storage of the device, the following recommendations must be observed:
Disconnect all the test leads from the meter.
Clean the meter and all its accessories thoroughly.
Wind the long test leads onto the reels.
In the case the meter is to be stored for a prolonged period of time, the batteries must be re-
moved from the device.
In order to prevent a total discharge of the accumulators in the case of a prolonged storage,
charge them from time to time.
9 Dismantling and utilisation
Worn-out electric and electronic equipment should be gathered selectively, i.e. it must not be
placed with waste of another kind.
Worn-out electronic equipment should be sent to a collection point in accordance with the law of
worn-out electric and electronic equipment.
Before the equipment is sent to a collection point, do not dismantle any elements.
Observe the local regulations concerning disposal of packages, worn-out batteries and accumulators.
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10 Technical data
10.1 Basic data
Abbreviation „w.m.” used in the specification of basic uncertainty signifies standard measured
value.
Measurement of alternating voltages (True RMS)
Range
Resolution
Basic uncertainty
0.0...299.9 V
0.1 V
(2% w.m. + 6 digits)
300…500 V
1 V
(2% w.m. + 2 digits)
Frequency range: 45...65 Hz
Measurement of frequency
Range
Resolution
Basic uncertainty
45.0...65.0 Hz
0.1 Hz
(0.1% w.m. + 1 digit)
Voltage range: 50...500 V
Measurement of current (True RMS)
Range
Resolution
Basic uncertainty
0.0..99.9 mA
0.1 mA
(5% w.m. + 3 digits)
100..999 mA
1 mA
1.00..9.99 A
0.01 A
(5% w.m. + 5 digits)
10.0..99.9 A
0,1 A
100 … 400 A
1 A
Nominal network frequency fn: 50 Hz, 60 Hz
*) Error of clamp must be additionally taken into account
Measurement of active power P, reactive power Q and apparent power S and cosφ
Range
[W], [VA], [var]
Resolution
[W], [VA], [var]
Basic uncertainty (with regard to
apparent power S)*)
0.0..99.9
0,1
(7% w.m. + 3 digits)
100..999
1
1.00..9.99 k
0.01 k
(7% w.m. + 5 digits)
10,0..99,9 k
0.1 k
100 … 200 k
1 k
Voltage range: 0…500 V
Current range: 0...400 A
Nominal network frequency fn: 50 Hz, 60 Hz
Number of phases of the circuit tested: 1
Range of cosφ display: 0.00..1.00 (resolution 0.01)
*) U: 50…500 V, I: 10 mA…400 A
Error of clamp must be additionally taken into account
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Measurement of short circuit loop impedance Z
L-PE
, Z
L-N
, Z
L-L
Measurement of short circuit loop impedance ZS
Test range according to IEC 61557:
Test lead
Test range ZS
1.2 m
0.13...1999
5 m
0.17...1999
10 m
0.21...1999
20 m
0.29...1999
WS-03, WS-04
0.19...1999
Display range:
Display range
Resolution
Basic uncertainty
0...19.99
0.01
(5% w.m. + 3 digits)
20.0...199.9
0.1
200...1999
1
Nominal working voltage U
nL-N
/ U
nL-L
: 110/190 V, 115/200 V, 127/220 V, 220/380 V, 230/400 V,
240/415 V
Working range of voltage: 95…270 V (for Z
L-PE
and Z
L-N
) and 95…440 V (for Z
L-L
)
Nominal network frequency fn: 50 Hz, 60 Hz
Working range of frequency: 45…65 Hz
Maximum test current (for 415 V): 41.5 A (10 ms)
Control of correctness of PE terminal connection by means of a touch electrode
Indications of short circuit loop resistance RS and short circuit loop reactance XS
Display range
Resolution
Basic uncertainty
0..19.99
0.01
(5% + 5 digits) of ZS value
Calculated and displayed for a value of ZS<20
Indications of short-circuit current IK
Test ranges according to IEC 61557 can be calculated on the basis of test ranges for ZS and nominal
voltages.
Display range
Resolution
Basic uncertainty
0.055…1.999 A
0.001 A
Calculated on the basis of
error for fault loop
2.00...19.99 A
0.01 A
20.0...199.9 A
0.1 A
200...1999 A
1 A
2.00...19.99 kA
0.01 kA
20.0…40.0 kA
0.1 kA
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Measurement of short circuit loop impedance Z
L-PE
RCD (without triggering of RCD)
Measurement of short circuit loop impedance ZS
Test range according to IEC 61557: 0.50…1999 for 1.2 m, WS-03 and WS-04 leads and
0.51...1999 for 5 m, 10 m and 20 m leads
Display range
Resolution
Basic uncertainty
0...19.99
0.01
(6% w.m. + 10 digits)
20.0...199.9
0.1
(6% w.m. + 5 digits)
200...1999
1
It does not cause triggering of RCD of IΔn ≥ 30 mA
Nominal working voltage Un: 110 V, 115 V, 127 V, 220 V, 230 V, 240 V
Working range of voltage: 95…270 V
Nominal network frequency fn: 50 Hz, 60 Hz
Working range of frequency: 45…65 Hz
Control of correctness of PE terminal connection by means of a touch electrode
Indications of short circuit loop resistance RS and short circuit loop reactance XS
Display range
Resolution
Basic uncertainty
0..19.99
0.01
(6% + 10 digits) of ZS val-
ue
Calculated and displayed for a value of ZS<20
Indications of short-circuit current IK
Test range according to IEC 61557 can be calculated on the basis of test ranges for ZS and nominal
voltages.
Display range
Resolution
Basic uncertainty
0.055…1.999 A
0.001 A
Calculated on the basis of
uncertainty for fault loop
2.00...19.99 A
0.01 A
20,0...199.9 A
0.1 A
200...1999 A
1 A
2.00...19.99 kA
0.01 kA
20.0…40.0 kA
0.1 kA
Measurement of parameters of RCD
Nominal working voltage Un: 110 V, 115 V, 127 V, 220 V, 230 V, 240 V
Working range of voltage: 95…270 V
Nominal network frequency fn: 50 Hz, 60 Hz
Working range of frequency: 45…65 Hz
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RCD trigger and response time test tA (for tA mode).
Test range according to IEC 61557: 0 ms ... to the upper limit of displayed value
Type of RCD
Multiplication
factor setting
Test range
Resolution
Basic uncertainty
Standard and
short-time delay
0.5 In
0..300 ms
1 ms
± 2% w.m. ±2 digits1)
1 In
2 In
0..150 ms
5 In
0..40 ms
Selective
0.5 In
0..500 ms
1 In
2 In
0..200 ms
5 In
0..150 ms
1)
for In = 10 mA and 0,5 In uncertainty is ± 2% w.m. ±3 digits
Accuracy of differential current setting:
for 1*In, 2*In and 5*In ..................................................................... 0..8%
for 0,5*In .................................................................................... –8..0%
Effective value of forced leakage current at measurement of RCD disconnection time
I
n
Multiplication factor setting
0.5
1
10
5
3,5
3,5 5 10
20
20
20
30
15
10,5
10,5
15
30
42
42
60
100
50
35
35
50
100
140
140
200
300
150
105
105
150
300
420
420
600
500
250
175
175
500
700
700
1000*
1000
500
1000
I
n
Multiplication factor setting
2
5
10
20
40
40
40
50
100
100
100
30
60
84
84
120
150
210
210
300
100
200
280
280
400
500
700
700
1000*
300
600
840
840
500
1000
1000
* - does not apply to Un = 110 V, 115 V and 127 V
Measurement of resistance-to-earth RE
Selected
nominal cur-
rent of RCD
Test range
Resolution
Test current
Basic uncertainty
10 mA
0.01 k...5.00 k
0.01 k
4 mA
0..+10% w.m. ±8 digits
30 mA
0.01 k...1.66 k
12 mA
0..+10% w.m. ±5 digits
100 mA
1 ..500
1
40 mA
0..+5% w.m. ±5 digits
300 mA
1 ..166
120 mA
500 mA
1 ..100
200 mA
1000 mA
1 ..50
400 mA
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Measurement of touch voltage UB in relation to nominal differential current
Test range according to IEC 61557: 10.0...99.9 V
Test range
Resolution
Test current
Basic uncertainty
0..9.9 V
0.1 V
0.4 x In
0..10% w.m. ± 5 dig-
its
10.0..99.9 V
0..15% w.m.
Measurement of RCD disconnection current IA for sinusoidal differential current
Test range according to IEC 61557: (0,3...1,0)IΔn
Selected nomi-
nal current of
RCD
Test range
Resolution
Test current
Basic
uncertainty
10 mA
3.3..10.0 mA
0.1 mA
0.3 x In..1.0 x In
5 % In
30 mA
9.0..30.0 mA
100 mA
33..100 mA
1 mA
300 mA
90..300 mA
500 mA
150..500 mA
1000 mA
330..1000 mA
it is possible to start the measurement from the positive of the negative half of forced leakage cur-
rent
test current passage time ............................... max. 3200 ms
Measurement of RCD disconnection current IA for differential unidirectional pulsed current and
unidirectional pulsed current with 6mA direct current offset
Test range according to IEC 61557: (0.35...1.4)In for In≥30 mA and (0.35...2)In for In=10 mA
Selected nomi-
nal current of
RCD
Test range
Resolution
Test current
Basic
uncertainty
10 mA
3.5..20.0 mA
0.1 mA
0.35 x In..2.0 x
In
10 % In
30 mA
10.5..42.0 mA
0.35 x In..1.4 x
In
10 % In
100 mA
35..140 mA
1 mA
300 mA
105..420 mA
500 mA
175..700 mA
measurement can be performed for positive or negative half-periods of forced leakage current
test current passage time ................................ max. 3200 ms
Measurement of RCD disconnection current IA for differential direct current
Test range according to IEC 61557: (0.2...2)In
Selected nom-
inal current of
RCD
Test range
Resolution
Test current
Basic
uncertainty
10 mA
2.0..20.0 mA
0.1 mA
0.2 x In..2.0 x In
10 % In
30 mA
6..60 mA
1 mA
100 mA
20..200 mA
300 mA
60..600 mA
500 mA
100..1000 mA
measurement can be performed for positive or negative forced leakage current
test current passage time ................................ max. 5040 ms
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Measurement of resistance-to-earth RE
Test range according to IEC 61557-5: 0,5 …1,99 k for test voltage of 50 V and 0,56 …1,99 k
for test voltage of 25 V
Range
Resolution
Basic uncertainty
0.00...9.99
0.01
(2% w.m. + 4 digits)
10.0...99.9
0.1
(2% w.m. + 3 digits)
100...999
1
1.00...1.99 k
0.01 k
test voltage: 25 V or 50 V rms
test current: 20 mA, sinusoidal rms 125 Hz (for fn=50 Hz) and 150 Hz (for fn=60 Hz)
blocking of measurement at interference voltage of UN>24 V
maximum measured voltage of interferences U
Nmax
=100 V
maximum resistance of auxiliary earth electrodes: 50 k
Measurement of resistance of auxiliary earth electrodes RH, R
S
Display range
Resolution
Basic uncertainty
000...999
1
(5% (RS + RE + RH) + 3 digits)
1.00...9.99 k
0.01 k
10.0...50.0 k
0.1 k
Measurement of interference voltages
Internal resistance: about 100 k
Range
Resolution
Basic uncertainty
0...100 V
1 V
(2% w.m. + 3 digits)
Low-voltage measurement of continuity of circuit and resistance
Measurement of continuity of protective conductors and equipotential bondings with 200 mA
current
Test range according to IEC 61557-4: 0,12…400
Range
Resolution
Basic uncertainty
0.00...19.99
0.01
(2% w.m. + 3 digits)
20.0...199.9
0.1
200...400
1
Voltage at open terminals: 4…9 V
Output current at R<2 : min. 200 mA (ISC: 200..250 mA)
Compensation of test leads resistance
Measurements for both current polarizations
Measurement of resistance with low current
Range
Resolution
Basic uncertainty
0.0...199.9
0.1
(3% w.m. + 3 digits)
200...1999
1
Voltage at open terminals: 4…9 V
Output current < 8 mA
Audio signal for resistance being measured < 30 ±50%
Compensation of test leads resistance
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Measurement of insulation resistance
Test range according to IEC 61557-2 for UN = 50 V: 50 k…250 M
Display range for
UN = 50 V
Resolution
Basic uncertainty
0...1999 k
1 k
(3 % w.m. + 8 digits),
[ (5 % w.m. + 8 digits)] *
2.00...19.99 M
0.01 M
20.0...199.9 M
0.1 M
200...250 M
1 M
* - for WS-03 and WS-04 leads
Test range according to IEC 61557-2 for UN = 100 V: 100 k…500 M
Display range for
UN = 100 V
Resolution
Basic uncertainty
0...1999 k
1 k
(3 % w.m. + 8 digits)
[ (5 % w.m. + 8 digits)] *
2.00...19.99 M
0.01 M
20.0...199.9 M
0.1 M
200...500 M
1 M
* - for WS-03 and WS-04 leads
Test range according to IEC 61557-2 for UN = 250 V: 250 k…999 M
Display range for
UN = 250 V
Resolution
Basic uncertainty
0...1999 k
1 k
(3 % w.m. + 8 digits)
[ (5 % w.m. + 8 digits)] *
2.00...19.99 M
0,01 M
20.0...199.9 M
0,1 M
200...999 M
1 M
* - for WS-03 and WS-04 leads
Test range according to IEC 61557-2 for UN = 500 V: 500 k…2.00 G
Display range for
UN = 500 V
Resolution
Basic uncertainty
0...1999 k
1 k
(3 % w.m. + 8 digits)
[ (5 % w.m. + 8 digits)] *
2.00...19.99 M
0.01 M
20.0...199.9 M
0.1 M
200...999 M
1 M
1.00…2.00 G
0.01 G
(4 % w.m. + 6 digits)
[ (6 % w.m. + 6 digits)] *
* - for WS-03 and WS-04 leads
Test range according to IEC 61557-2 for UN = 1000 V: 1000 k…3,00 G
Display range for
UN = 1000 V
Resolution
Basic uncertainty
0...1999 k
1 k
(3 % w.m. + 8 digits)
2.00...19.99 M
0.01 M
20.0...199.9 M
0.1 M
200...999 M
1 M
1.00...3.00 G
0.01 G
(4 % w.m. + 6 digits)
Test voltages: 50 V, 100 V, 250 V, 500 V and 1000 V
Accuracy of generated voltage (Robc [] 1000*UN [V]): -0+10% from the set value
Detection of a dangerous voltage before commencing a measurement
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Discharging the object tested
Measurement of insulation resistance with the use of UNI-Schuko plug (WS-03, WS-04) be-
tween all three terminals (UN=1000 V is not available)
Insulation resistance measurement for multi-wire cables (max. 5) using an optional external
adapter
Measurement of voltage on terminals +R
ISO
, -R
ISO
within the range of: 0..440 V
Test current < 2 mA
Remark:
With regard to measurements conducted with the use of WS-03 and WS-04 leads, if at
least one out of three measurements has ended with current limitation (LIMIT symbol
is displayed), the results of remaining measurements may be burdened with additional uncertainty.
Phase sequence
Phase sequence indicator: correct, incorrect
Mains voltage range U
L-L
: 95...500 V (45…65 Hz)
Display of phase-to-phase voltages
Other technical data
a) type of insulation .................................................... double, EN 61010-1 and IEC 61557 compliant
b) metrological category .................................................... IV 300V (III 600V), EN 61010-1 compliant
c) degree of housing protection acc. to EN 60529 ....................................................................... IP54
d) power supply of the meter ..............................................................................................................
.............. alkaline batteries 4x1,5 V LR14 (C) or accumulator package SONEL NiMH 4,8 V 4,2 Ah
e) parameters of AC adapter for the battery charge .............................. 100 V…240 V, 50 Hz…60 Hz
f) dimensions ....................................................................................................... 288 x 223 x 75 mm
g) weight of the meter ..................................................................................................... about 2,2 kg
h) storage temperature .................................................................................................... –20...+70C
i) working temperature ........................................................................................................ 0...+50C
j) temperature range suitable for initiating battery charging....................................... +10C to +40C
k) temperatures at which loading is interrupted................. below +5C and above (or equal to) +50C
l) humidity ......................................................................................................................... 20%...80%
m) nominal temperature....................................................................................................... +23 ± 2C
n) reference humidity ......................................................................................................... 40%...60%
o) altitude (above sea level) ................................................................................................... <2000m
p) time till automatic shutdown when idle (Auto-OFF) ..................................................... 120 seconds
q) number of measurements Z or RCD (for alkaline batteries) ... >3000 (2 measurements per minute)
r) number of measurements R
ISO
or R (for alkaline batteries) .................................................. >2000
s) display ............................................................................................................. LCD, segment-type
t) memory of measurement results .............................................................. 990 cells, 57,500 results
u) data transmission .................................................................................................................... USB
v) quality standarddevelopment, design and manufacturing are ISO 9001, ISO 14001, PN-N-18001
compliant
w) the device meets the requirements of IEC 61557 standard
x) the product meets EMC requirements (immunity for industrial environment) according to the fol-
lowing standards........................................................... EN 61326-1:2006 and EN 61326-2-2:2006
10.2 Additional data
Data on additional uncertainties are useful mainly when the meter is used in non-standard condi-
tions and for metrological laboratories for the purpose of calibration.
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10.2.1 Additional uncertainties according to IEC 61557-2 (R
ISO
)
Significant parameter
Designation
Additional uncertainty
Position
E
1
0%
Supply voltage
E
2
0% (BAT is not lit)
Temperature 0...35°C
E
3
2%
10.2.2 Additional uncertainties according to IEC 61557-3 (Z)
Significant parameter
Designation
Additional uncertainty
Position
E
1
0%
Supply voltage
E
2
0% (BAT is not lit)
Temperature 0...35°C
E
3
1,2 m lead – 0Ω
5 m lead – 0.011Ω
10 m lead – 0.019Ω
20 m lead – 0.035Ω
WS-03, WS-04 lead – 0.015Ω
Phase angle 0..30°C at the bottom of test range
E
6.2
0.6%
Frequency 99%..101%
E
7
0%
Network voltage 85%..110%
E
8
0%
Harmonic
E
9
0%
DC component
E10
0%
10.2.3 Additional uncertainties according to IEC 61557-4 (R ±200 mA)
Significant parameter
Designation
Additional uncertainty
Position
E
1
0%
Supply voltage
E
2
0.5% (BAT is not lit)
Temperature 0...35°C
E
3
1.5%
10.2.4 Additional uncertainties according to IEC 61557-5 (RE)
Significant parameter
Designation
Additional uncertainty
Position
E
1
0%
Supply voltage
E
2
0% (BAT is not lit)
Temperature 0...35°C
E
3
±0.25 digit/°C for 50 V
±0.33 digit/°C for 25 V
Serial interference voltage
E
4
1%, generally according to the be-
low formulas
Resistance of electrodes
E
5
2% generally according to the be-
low formulas and the diagram
Frequency 99%..101%
E
7
0%
Network voltage 85%..110%
E
8
0%
Additional uncertainty caused by serial interference voltage
RE
Additional uncertainty [Ω]
0.00...9.99 Ω
±((0.01RE + 0.012)UZ + 0.003 U
Z
2
)
10.0...99.9 Ω
±((0.001RE + 0.05)UZ + 0.001 U
Z
2
)
100 Ω...1.99 kΩ
±((0.001RE + 0.5)UZ + 0.001 U
Z
2
)
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Additional uncertainty caused by resistance of electrodes:
%105,1
004,0
150
100000
28
H
E
H
S
S
dod
R
R
R
R
R
RS < 5 k
%105,1
004,0
5,7
28
H
E
H
dod
R
R
R
RS ≥ 5 k
Resistance of voltage electrode Rs[Ω]
10.2.5 Additional uncertainties according to IEC 61557-6 (RCD)
IA, tA, UB
Significant parameter
Designation
Additional uncertainty
Position
E
1
0%
Supply voltage
E
2
0% (BAT is not lit)
Temperature 0...35°C
E
3
0%
Resistance of electrodes
E
5
0%
Network voltage 85%..110%
E
8
0%
Additional error ca
used by resistance of electrodes [%]
RH Current electrode resistance
RE Resistance to earth
=
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11 Equipment
11.1 Standard Equipment
Standard set of equipment supplied by the manufacturer includes:
MPI-520 meter – WMPLMPI520
set of test leads:
Uni-Schuko lead with actuation of measurement for insulation resistance testing (cat. III 300 V) – WS-03 –
WAADAWS03
1.2 m, cat III 1000V test leads with banana plugs – 3 leads (yellow – WAPRZ1X2YEBB, red -
WAPRZ1X2REBB and blue - WAPRZ1X2BUBB)
15 m-long test leads on reels (WAPRZ015BUBBSZ blue) and 30 m-long test lead (WAPRZ030REBBSZ
red)
USB interface cable - WAPRZUSB
accessories
cat. III 1000 V crocodile clip – 2 clips (yellow K02 – WAKROYE20K02 and red – WAKRORE20K02)
cat. III 1000 V test prod with banana socket – 3 test prods (yellow – WASONYEOGB1, red –
WASONREOGB1 and blue – WASONBUOGB1)
earth contact test probe (rod) 30 cm – 2 probes – WASONG30
carrying case for the meters and accessories – WAFUTL1
hanging straps for the meter (long – 1.5 m and short – 30 cm) – WAPOZSZEKPL
operating manual
calibration certificate
4 batteries 1.5 V LR14
11.2 Optional Equipment
Additionally, the following items that are not included in the scope of standard equipment can be purchased from
the manufacturer or the distributors:
red test leads with banana plugs:
5 m-long– WAPRZ005REBB
10 m-long – WAPRZ010REBB
20 m-long – WAPRZ020REBB
test lead with angle plug (without triggering) (cat. III 300V) – WS-04 – WAADAWS04
adapter Auto ISO-1000c – cat. III 300V – WAADAAISO10C
triple phase socket adapter AGT-16P – WAADAAGT16P
triple phase socket adapter AGT-32P – WAADAAGT32P
triple phase socket adapter AGT-63P – WAADAAGT63P
RCD testing adapter TWR-1J – WAADATWR1J
earth contact test probe (rod) (80 cm) – WASONG80
cramp – WAZACIMA1
clamp C-3 – WACEGC3OKR
software for creating measurement protocols „SONEL Pomiary Elektryczne” (SONEL Electrical measurements) –
WAPROSONPE4
software for creating drawings, electrical installation diagrams „SONEL PE Schematic” – WAPROSCHEM WAPROSCHEM
software for creating measurement calculations „SONEL PE Kalkulacje” (SONEL Calculations) – WAPROKALK
Note
The software is supported by the following systems: Windows XP (Service
Pack 2), Windows Vista, Windows 7.
accumulator package SONEL NiMH 4.8 V 4.2 Ah – WAAKU07
adapter for accumulator charging Z7 – WAZASZ7
adapter cable (230 V) – WAPRZLAD230
cable for charging the accumulator package from the car cigarette lighter socket – WAPRZLAD12SAM
calibration certificate
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12 Positions of the meter’s cover
The movable cover enables using the meter in various positions.
1 2 3
1 – Cover as the bottom of the meter
2 – Cover used as a support
3 – Cover in the position that enables convenient use of the meter suspended on the neck by means
of hanging straps
13 Manufacturer
The manufacturer of the device, which also provides guarantee and post-guarantee service is the
following company:
SONEL S.A.
ul. Wokulskiego 11
58-100 Świdnica
Poland
tel. +48 74 858 38 60
fax +48 74 858 38 09
E-mail: [email protected]
Web page: www.sonel.pl
Attention:
Service repairs must be realised solely by the manufacturer.
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NOTES
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