Sonel MIC-10k1 User manual

USER MANUAL
INSULATION RESISTANCE METER
MIC-10k1 ●MIC-5050
SONEL S.A.
Wokulskiego 11
58-100 Świdnica
Poland
Version 2.06 16.02.2023

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MIC-10k1 and MIC-5050 meters are modern, high-quality meters, easy and safe in operation. Please
acquaint yourself with this manual in order to avoid measuring errors and prevent possible problems
in operation of the meter.

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CONTENTS
1Safety ................................................................................................................5
2Menu..................................................................................................................6
2.1 Wireless transmission ...............................................................................................6
2.2 Measurement settings...............................................................................................7
2.2.1 Mains frequency................................................................................................................7
2.2.2 Times t1, t2, t3 for calculating absorption coefficients........................................................8
2.2.3 Type of absorption coefficients..........................................................................................8
2.2.4 IISO short-circuit current......................................................................................................9
2.2.5 Setting limit values............................................................................................................9
2.2.6 Temperature unit.............................................................................................................10
2.2.7 Auto-incrementing of the memory cell number ................................................................10
2.2.8 Filter................................................................................................................................11
2.2.9 Chart type selection ........................................................................................................11
2.3 Meter settings..........................................................................................................12
2.3.1 LCD contrast...................................................................................................................12
2.3.2 Automatic shut-off (Auto-OFF) ........................................................................................13
2.3.3 Date and time..................................................................................................................13
2.3.4 Factory (default) settings.................................................................................................14
2.3.5 Software update..............................................................................................................14
2.3.6 Key sounds.....................................................................................................................15
2.3.7 Wireless communication .................................................................................................16
2.4 Language selection.................................................................................................16
2.5 Information about manufacturer..............................................................................16
3Measurements................................................................................................17
3.1 Diagnostics performed by the meter –limits ...........................................................17
3.2 Measurement of insulation resistance.....................................................................17
3.2.1 Double-lead measurement..............................................................................................18
3.2.2 Three-lead measurement................................................................................................24
3.2.3 Measurements with AutoISO-5000..................................................................................26
3.2.4 Measurements with increasing voltage –SV...................................................................30
3.2.5 Dielectric Discharge Indicator –DD.................................................................................31
3.2.6 Damage location (after-burning)......................................................................................34
3.3 Low-voltage measurement of resistance.................................................................35
3.3.1 Measurement of resistance of protective conductors and equipotential bonding with
±200 mA current..............................................................................................................36
3.3.2 Calibration of test leads...................................................................................................37
3.4 Correcting the RISO value to the reference temperature..........................................38
3.5 Determining the length of the tested cable..............................................................39
3.6 Tightness test of MV cable jacket............................................................................40
4Memory of measurement results .................................................................41
4.1 Structure of the Memory..........................................................................................41
4.1.1 The appearance of main windows in the measurement recording mode..........................41
4.2 Storing the measurement results in the memory.....................................................43
4.2.1 Entering the results without extending the memory structure...........................................43
4.2.2 Extending the memory structure......................................................................................44
4.3 Viewing memory data..............................................................................................49
4.4 Deleting memory data.............................................................................................51

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5Data transmission..........................................................................................52
5.1 Set of accessories to connect the meter to a PC ....................................................52
5.2 Data transmission through USB port.......................................................................52
5.3 Data transmission using Bluetooth module.............................................................53
5.4 Read-out and change of PIN code for Bluetooth connections.................................53
6Power supply of the meter............................................................................55
6.1 Monitoring the power supply voltage.......................................................................55
6.2 Battery power..........................................................................................................55
6.3 Charging rechargeable battery................................................................................56
6.4 Power supply from mains........................................................................................56
6.5 General principles for using Li-Ion rechargeable batteries......................................57
6.6 General principles for using gel (lead) rechargeable batteries................................57
7Cleaning and maintenance ...........................................................................58
8Storage............................................................................................................58
9Dismantling and utilisation...........................................................................58
10 Technical specifications ...............................................................................59
10.1 Basic data ...............................................................................................................59
10.2 Other technical data................................................................................................62
10.3 Additional data ........................................................................................................63
10.3.1 Additional uncertainties according to EN 61557-2 (RISO)..................................................63
10.3.2 Additional uncertainties according to EN 61557-4 (RCONT)...............................................63
11 Accessories....................................................................................................63
11.1 Standard accessories..............................................................................................63
11.2 Optional accessories...............................................................................................64
12 Manufacturer ..................................................................................................65
13 Laboratory services.......................................................................................66

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1 Safety
MIC-10k1 and MIC-5050 meters are designed for performing check tests of protection against
electric shock in mains systems. The meters are used for making measurements and providing results
to determine safety of electrical installations. Therefore, in order to provide conditions for correct oper-
ation and accuracy of 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 provided by the producer.
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.
MIC-10k1 and MIC-5050 meters must be operated only by appropriately qualified personnel with
relevant certificates authorising the personnel to perform works on electric systems. Operating the
meter by unauthorised personnel may result in damage to the device and constitute a source of
danger for the user.
During measurements of insulation resistance, dangerous voltage up to 10 kV (MIC-10k1) or 5 kV
(MIC-5050) occurs at the ends of test leads of the meter.
Before the measurement of insulation resistance you must be sure that tested object is discon-
nected from the power supply.
During the measurement of insulation resistance do not disconnect test leads from the tested ob-
ject before the measurement is completed (see par. 3.2.1); otherwise the capacitance of the object
will not be discharged, creating the risk of electric shock.
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 fire-
risk/explosive environment, it is necessary to consult it with the person responsible for health and
safety.
It is unacceptable to operate:
a damaged meter which is completely or partially out of order,
a meter with damaged 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 with a high
level of relative humidity, do not start measurements until the meter is warmed up to the ambi-
ent temperature (approximately 30 minutes).
Remember that BAT! message appearing on the display indicates insufficient voltage of power
supply and the need to recharge the batteries.
Before measurement, choose a correct measurement function and make sure that test leads are
connected to respective measuring terminals.
Do not power the meter from sources other than those listed in this manual.
RISO meter inputs are electronically protected against overloads (caused by e.g. connecting the
meter to a live circuit) up to 825 V for 60 seconds.
Repairs may be performed only by an authorised service point.
ATTENTION!
11 kV DC crocodile clips and probes are designed to work only on objects without voltage.
Note:
Due to continuous development of the meter’s software, the actual appearance of the dis-
play, in case of some of the functions, may slightly differ from the display presented in this
operating manual.

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ATTENTION!
To display the correct battery discharge status, it is necessary to completely discharge
and then fully charge the battery, before starting the regular use of the meter.
Note:
An attempt to install drivers in 64-bit Windows 8 and Windows 10 may result in displaying
"Installation failed" message.
Cause: Windows by default blocks drivers without a digital signature.
Solution: Disable the driver signature enforcement in Windows.
2 Menu
Press MENU button.
The main menu contains the following items:
Wireless transmission
Measurement Settings
Meter Settings
Language selection
Information about manufacturer
Use , and , buttons to select desired posi-
tion. Enter a selected option by pressing ENTER.
2.1 Wireless transmission
See sections 5.3 to 5.5.

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2.2 Measurement settings
The option of Measurement settings consists of:
Mains frequency
Times t1, t2, t3 for calculating absorption coefficients
Absorption coefficients Ab1, Ab2 or DAR PI
Short-circuit current IISO
Setting limit values
Temperature unit
Cell autoincrementing
Filter –restricting RISO display
Chart type selection
Use , and , buttons to select desired posi-
tion. Enter a selected option by pressing ENTER.
2.2.1 Mains frequency
Only the measurement with a properly selected mains frequency will ensure optimum filtration of
interferences. The meter is designed for filtration of interferences generated by 50 Hz and 60 Hz net-
works.
Use , to select the mains frequency.
Confirm your choice by pressing ENTER but-
ton.

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2.2.2 Times t1, t2, t3 for calculating absorption coefficients
Use , buttons to scroll between times
and press , buttons to set time values.
Confirm your choice by pressing ENTER but-
ton. Selection range: (1 s...600 s), t2 (1 s ...
600 s, but >t1), t3 (1 s...600 s, but >t2).
2.2.3 Type of absorption coefficients
Use , buttons to select the type of coef-
ficients: Ab or DAR PI. Confirm your choice by
pressing ENTER button.

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2.2.4 IISO short-circuit current
Use , buttons to select the current val-
ue. Confirm your choice by pressing ENTER
button.
2.2.5 Setting limit values
Use , buttons to switch on/off limit val-
ues. Confirm your choice by pressing ENTER
button.

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2.2.6 Temperature unit
Use , to select the temperature unit.
Confirm your choice by pressing ENTER but-
ton.
2.2.7 Auto-incrementing of the memory cell number
Use , to switch on/off the function of
Auto-incrementing of the memory cell number.
Confirm your choice by pressing ENTER but-
ton.

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2.2.8 Filter
The meter is equipped with advanced digital filters for result stabilisation in difficult and unstable
measurement conditions. The meter displays a filtered value of measurements for a specified time pe-
riod, which may be 10 s, 30 s, 60 s, 100 s, 200 s or, after selecting the SMART option, enables the fil-
ter which effectively eliminates interference and at the same time quickly determines the result.
Use , to select a time period or to
switch off the filter. Confirm your choice by
pressing ENTER button.
Note:
100 s, 200 s and SMART filters are supported only in meters with specific serial number prefixes. De-
tails in the table below.
Meter name
100 s / 200 s / SMART filter
supported
100 s / 200 s / SMART filter
not supported
Serial number prefix
MIC-5050
KI
EO
MIC-10k1
JN, KH
EN
2.2.9 Chart type selection
To illustrate the measurement results on the chart, you may select current and resistance (R, I)
or voltage and resistance (R, U).
Use , buttons to select the values to be
displayed on the chart. Confirm your choice
by pressing ENTER button.

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2.3 Meter settings
The option of Meter Settings consists of:
LCD contrast
Automatic shut-off
Date and time
Factory (default) settings
Program update
Button tones
Wireless communication
Use , and , buttons to select desired posi-
tion. Enter a selected option by pressing ENTER.
2.3.1 LCD contrast
Select contrast value using , and ,
buttons; confirm your choice by pressing
ENTER.

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2.3.2 Automatic shut-off (Auto-OFF)
The setting defines the shut-off time of idle meter.
Use , buttons to set Auto-OFF time;
confirm your choice by pressing ENTER.
2.3.3 Date and time
Use , buttons to select the value to be
changed (day, month, year, hour, minute). Set
a required value using , buttons. When
required settings are made, press ENTER .

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2.3.4 Factory (default) settings
In order to introduce factory (default) settings,
highlight YES using , buttons and press
ENTER .
Note:
Alternatively, press and hold the ON/OFF button for more than 5 seconds.
2.3.5 Software update
ATTENTION!
Before programming, charge the battery.
During programming the meter must not be switched off as well as the transmis-
sion cable must not be disconnected.
1. Before updating the program, download necessary data to a preferred data carrier, because dur-
ing the updating process all data will be lost.
2. From the manufacturer's website (www.sonel.pl) download the meter programming software, un-
zip the file and install the program on your computer.
3. Run the program and follow the displayed instructions:
- select Software update in MENU of the meter
- connect the meter to your PC.
4. After displaying the following screen, click Search button,

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wait until the program finds the meter and click Start.
5. After completing the update, disconnect the meter from the computer and click Close button.
2.3.6 Key sounds
Use , buttons to switch on/off key
sounds. Confirm your choice by pressing
ENTER button.

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2.3.7 Wireless communication
Use , buttons to switch on/off wireless
communication. Confirm your choice by
pressing ENTER button.
2.4 Language selection
Use , buttons to select desired lan-
guage and press ENTER.
2.5 Information about manufacturer

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3 Measurements
Notes:
The result of the latest measurement is remembered by the meter until the next measurement is
started or the measuring function is changed by means of the rotary switch. The result of the latest
measurement is displayed on the screen for 20 seconds. Then it may be recalled by pressing ENTER,
also after the meter is turned off and turned back on again.
Note:
If a message shown below appears:
Meter temperature is too high! Measurement impossible!
turn the meter off and put it in a place that guarantees cooling.
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 Diagnostics performed by the meter –limits
The meter is able to assess whether the measurement result is within acceptable limits. The us-
er may set a limit, i.e. maximum or minimum value, which should not be exceeded by the result. For
measurements of insulation resistance, the set limit is the minimum value, whereas for measurements
of continuity of protective conductors and equipotential bonding- it is the maximum value.
The limits are activated globally in the main menu (Section 2.1.5). When the function of setting
limits is activated, the display, in its lower left corner, shows the symbols with the following meaning:
- : the result is correct, it is within the set limits,
- : the result is incorrect, it is outside the set limits,
The method for setting limits is described in the chapters describing the measurement data. In
DD, SV functions and in after-burning –it is not possible to set limits.
3.2 Measurement of insulation resistance
WARNING:
The tested object must not be live.
Note:
During measurement, especially of high resistances, make sure that test leads do not touch
each other and probes (crocodile clips), because such a contact may cause the flow of sur-
face currents resulting in additional error in measurement results.
Inverter output current is limited at 1,2 mA, 3 mA or 6 mA level. Activation of the current limit is
indicated by a continuous beep. The measurement result is correct, but on the test terminals the test
voltage is lower than voltage selected before the measurement. The current limitation occurs in the
first phase of the measurement due to charging the capacity of the tested object.

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The actual test voltage as a function of the measured insulation resistance RX (for maximum
rated voltage)
3.2.1 Double-lead measurement
Set the rotary switch of function selection at
one of RISO positions, selecting simultaneously
measuring voltage:
- for at 50...10000V voltage is ad-
justed as follows: 50 V...1 kV in 10V steps,
1 kV...10 kV in 25V steps,
- for at 50...5000V voltage is adjust-
ed as follows: 50 V...1 kV in 10V steps,
1 kV...5 kV in 25V steps.
The meter is in the mode of measuring inter-
ference voltage of the tested object UN.