Sonel MIC-5001 Insulation Resistance Meter User Manual

USER MANUAL
INSULATION RESISTANCE METER
MIC-5001

**** SONEL S.A.
Wokulskiego 11
58-100 Świdnica
Poland
Version 1.08 25.09.2023

MIC-5001 is a modern, high-quality measuring device, which is easy and safe to use. Please acquaint yourself with this manual in order to avoid measuring errors and prevent possible problems in operation of the meter.

Safety

MIC-5001 meter is designed for performing check tests of protection against electric shock in mains systems. The meter is used for making measurements and providing results to determine safety of electrical installations. Therefore, in order to provide conditions for correct operation 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-5001 meters must be operated only by appropriately qualified personnel with relevant certificates authorising the personnel to perform works on electric systems. Unauthorized use of the meter may result in its damage and may be a source of serious hazard to the user.

• During measurements of insulation resistance, dangerous voltage of approx. 5kV occurs at the ends of measurement wires of the meter.

• Before the measurement of insulation resistance you must be sure that tested object is disconnected from the power supply.

• During the measurement of insulation resistance do not disconnect test leads from the tested object before the measurement is completed (see par. 4.1); 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 regulations 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 device when:
  ⇒ 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 ambient 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.

• Message ErrX displayed in the main field , where X is a number from 0 to 9, indicate incorrect operation of the meter. If after restarting the device this situation is repeated – it indicates that the meter is damaged. Please contact the manufacturer’s service.

• 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.

• The RISO inputs of the meter are protected electronically from overload (e.g. due to having been connected to a live circuit) up to 750 V RMS for 60 seconds.

• Repairs may be performed only by an authorised service point.

Note:
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.

Turning the meter ON and activating screen backlight.

Turn on the meter with button.
Short press button to turn the screen backlight on; press the button again to turn the backlight off.
Turn on the meter by pressing and keeping button pressed. for approx. 2 sec.
Pressing button for approx. 7 seconds will turn off the meter in case of emergency.

Meter Configuration

Turn on the meter by pressing and keeping SET/SEL button pressed.

2

Use buttons and   to set Auto-OFF time or to inactivate this function (horizontal lines – AutoOFF function is inactive). Auto-OFF function is used to turn-off inactive meter after a preselected time (300, 600 or 900 sec.). When the user switches the meter off, it will generate a beep af- ter the set time.

3

Use and buttons to enter the screen with audio message settings: bEEP.

4

Use and buttons to turn the audio mes- sages ON ( ) or OFF (   ).

5

Press and buttons to enter the settings of absorption coefficients FAC.

6

Use and buttons to set DAR parameters for Ab1, Ab2 or polarization index PI.

7

Use and buttons to move to the filtration FL settings.

MIC-5001 has an analogue filter which damps variable component of current and allows measurements in an environment with strong electromagnetic interference. Activation of FL filtration causes a slight increase of time needed to stabilize the measurements. The meter has 3 setting modes of filter operation.

8

Use and buttons to set the filtration mode:

• “AUTO” – Detection of noise activates the filter. “NOISE” mnemonic is displayed. The recommended setting.
•  “ON” – filter always ON, the detection of noise (despite enabled filter) results in displaying “NOISE” mnemonic.
•  “OFF” – filter always OFF, the detection of noise results in displaying “NOISE” mnemonic.

9

Use and buttons to enter the screen with software update UPdt.

10 Press ENTER to enter the update mode. The update process is described in Chapter 8

After changing the parameters, you may exit SETUP menu (not applicable for Update screen):

11

Press ENTER to memorize settings or use ESC button to go to the measurement screen without approving the changes.

Measurements

4.1 Measurement of insulation resistance
WARNING:
The tested object must not be live.
Attention:
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 surface currents resulting in additional error in measurement results.
WARNING:
In a dusty and humid environment, do not open plugs of USB sockets and charger.
4.1.1 Double-lead measurement

1. Use or button to enter the measure- ment of RISO (yellow LED is ON ). The me- ter is in the voltage measurement mode.

2. Press SET/SEL button to enter the selection of:
   • measuring voltage UISO (50 V…500 V at 50 V steps and above 500 V at 100 V steps)
   • times for calculating absorption coefficients t1, t2, t3 (up to 600 s)
   • interval between points of characteristics ChA (15, 30, 45 or 60 sec.).

3. Use and buttons to set UISO value confirm by pressing ENTER

4. or use   button to enter the setting of times for calculating the absorption coefficients.

5. Use and buttons to set t1 value, use button to start setting t2 and then t3 value. Press again to enter the setting of time in- terval ChA of recording RISO.

6. 

7.   Use and buttons to set the interval val- ue. Horizontal lines indicate unavailability of recording characteristics.

8. Press ENTER to confirm settings or press ESC to exit without saving the changes.

9. Connect test leads according to the drawing.

10. The meter is readyfor measurement.

11. Press and hold START push-button. The measurement is performed continuously until you release the button or the pre-set time is reached. In order to maintain (hold) the measurement press and hold START button 5 sec. for 5 sec. or press ENTER while holding START . The buttons may be released after symbol is displayed, which indicates the automeasurement. The measurement will end after the longest pre-set time (t1, t2 or t3) runs out. To interrupt or terminate the measurement earlier in the absence of pre-set t1, t2 or t3 values (measurement without time limit), press again START or ESC button.

12. View of the screen during measurement. means that the measurement was started with ENTER button or by pressing and holding START button for approx. 5 sec. Use SET/SEL to display values of leakage current IL.

13. After the measurement is completed or stopped, read the result. The results of all completed measurements will be displayed (even when the measurement was interrupted/stopped e.g. after 60 seconds). When the meter switched into standby mode, the measurement result may be recalled by pressing ENTER.

14. Use and to see individual components of the result in the following order: RISO→IL→Ab2→Ab1→Rt3→It3→Rt2→It2→Rt1→It1 →RISO.
    If the measurement is stopped, the displayed values will present the results of partial measurements that have been completed and “—” will represent uncompleted partial measurements. If the characteristic was measured, then the measurement results may be read between It1 and RISO.

Note:

During measurements of insulation resistance, dangerous voltage of approx. 5kV occurs at the ends of measurement wires of the meter.
It is forbidden to disconnect test leads before the measurement is completed. Disconnection may lead to high voltage electric shock and prevents discharging of the tested object.

– Disabling t2 will also disable t3.
– Timer measuring the measurement time is started when UISO voltage is stabilized.
– Symbol LIMIT means operation with limited inverter power. If this condition persists for 20 seconds, the measurement is interrupted.
– If the timer reaches characteristic points (‘tx’ times or characteristic times), then for 1s instead UISO a symbol (mnemonic) of this point is displayed which is accompanied by a long beep.
– If the value of any of the measured partial resistance is out of range, the value of the absorption coefficient is not shown
– horizontal dashes are displayed.
– During the measurement LED is flashing in yellow.
– When the measurement is complete, capacity of the tested object is discharged by shorting terminals RISO+ and RISO- with resistance of approx. 100 kΩ. Message “diS” is displayed. Do not disconnect the test leads before the object capacity id discharged.  When during viewing the results, voltage is present at terminals RISO, LED RISO will blink in red and additional two- tone beep will be generated.
– In case of power cables measure the insulation resistance between each conductor and other conductors shorted and grounded (figure below).

Additional information displayed by the meter

| Test voltage is present on terminals of the meter .
---|---
**NOISE!| Interference voltage higher than 25 V but lower than 50 V, is pre- sent on the tested object. Measurement is possible but may be burdened with additional uncertainty.
READY disappears, LED lights red, two-tone beep| Interference voltage higher than 50 V, is present on the tested ob- ject. The measurement is blocked.
LIMIT I!**| Activation of current limit. The symbol displayed is accompanied by a continuous beep.

| Breakdown of the tested object insulation, the measurement is in- terrupted. The message appears after displaying LIMIT I! for 20 s during the measurement, when the voltage previously reached the nominal value.
  RISO LED is blinking in red and two- tone acoustic signal is generated| ** During the measurement, AC voltage appeared or the object can- not be discharged for 30 seconds. Immediately** disconnect the test leads.

4.1.2 Three-lead measurement

In order to eliminate the influence of surface resistance in transformers, cables, etc. the three-lead measurement is used. For example:
• at the measurement of inter-winding resistance of a transformer, G socket of the meter should be connected to the transformer tank;

• when measuring insulation resistance between one of the cable conductors and the cable jacket, the effect of surface resistances (important in difficult weather conditions) is eliminated by connecting a piece of metal foil insulating the tested conductor with G socket of the meter;

The same shall apply when measuring the resistance between two conductors of the cable, attaching to G terminal other conductors that do not take part in the measurement.
4.2 Measuring the resistance with increasing voltage – RampTest

1. Use or button to enter RampTest measurement of (yellow LED is ON   ).

2. The meter indicates readiness for measurement with increasing voltage.

3. Connect test leads to the tested object.
   

4. Use SET/SEL button to enter the settings of the measuring voltage UISO and measurement duration settings. Setting of the measuring voltage UISO is adjusted within the range from 50 V to 500 V in 50 V steps, whereas above 500 V to 5 kV in 100 V steps.

5. The measurement time may be set in the range from 5 sec. to 99 min. Setting UISO values and the measurement time allows to calculate the voltage increase ratio, expressed in V/s. The voltage increase ratio adjusted from 0.005 V/s (for UISO = 50 V and t = 99 min.) up to 996 V/s. (for UISO= 5.0 kV and t = 5 s.) When the setting of the voltage increase ratio is ≥ 50 V/s, then the meter will display message not showing the value of the measured resistance and but only the value of breakdown voltage.

6. Use and buttons to set voltage UISO, signalled by pulsating light. Use button to set time t=XX’ for values expressed in minutes or press again button to set time t=XX” expressed in seconds.

7. Press ENTER to confirm the settings.

8. To start the measurement press and hold START button. The measurement is performed continuously until you release the button or the pre-set time is reached. In order to maintain (hold) the measurement press and hold START button 5 sec. for 5 sec. or press ENTER while holding START button. Symbol will be displayed, indi- cating auto-measurement – you may release the buttons. The measurement will be completed when the preset time is achieved or when the tested insulation is broken (punctured). In order to interrupt the measurement press START button again or ESC. Pay attention, whether the tested object is discharged (LED is not flashing). Until the object is fully discharged, do not disconnect the test leads and do not touch the tested object.

9. View of the screen during measurement. means that the measurement was started with ENTER button or by pressing and holding START button for approx. 5 sec.
   Use SET/SEL to display values of leakage current I.

10. After the measurement is completed or stopped, read the result. The results of all completed measurements will be displayed (even when the measurement was interrupted) When the meter switched into standby mode, the measurement result may be recalled by pressing ENTER.

11. Use and buttons to browse the measured values of resistance and leakage current at specific time intervals.
    Resistance RISO value, measured in time t=5’30’. Symbol indi- cates the selected time interval, in which the resistance value was recorded.

The value of leakage current IL measured in time t=5’30’. Symbol indicates the selected time interval, in which the leakage current value was recorded.

If the electric resistance strength of the tested insulation is exceeded and the puncture occurs, the main field of the display will show message – break- down.

Additional information displayed by the meter

**NOISE!| Interference voltage occurs on the tested object. The measurement is possible however it will be burdened with additional uncertainty that is specified in the technical data.
---|---
,  LED is blinking in red and two-tone acoustic signal is generated| ** Interference voltage exceeds the allowable value, the measurement is blocked.
| Breakdown – the tested object is damaged. The insula- tion has been pierced.

In case of RampTest measurement, the analogue filter FL is not active.

4.3 Voltage measurement

1. Use   or buttons to enter the measure- ment (green LED is ON ). The meter is in the voltage measurement mode.

2. Connect the meter to a voltage source.
   

3. Measurement is performed in a continuous  manner.

Additional information displayed by the meter

> 750V, LED is blinking in red, two-tone acoustic signal is generated| ** Measuring range is exceeded. Voltage is higher than acceptable. Immediately disconnect the test leads.
---|---
~
–| When AC voltage is detected, the device will display symbol “ ~ ” (“wave”) and when DC voltage is detected, the device will display symbol “ –** ” for negative polarity or “nil” for positive polarity.

4.4 Tightness test of MV cable jacket
Tightness test of MV cable jacket consists of applying a test voltage between its metal sheath or its return conductor and the ground. During the measurement, pay attention to the value of IL current.
The test voltage and the measurement time depend on the type of the tested object and test guidelines. For example, for a cable with polyethylene insulation:

•  test voltage according to standard HD 620 S1: ≤5 kV,
• measurement time after voltage stabilization: 1-10 min,
• positive result according to HD 620 S1: when no ground fault has occurred.

Memory of measurement results

MIC-5001 meters have memory divided into 10 banks of 99 cells. Thanks to dynamic memory al- location, 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 facilities. The user may also perform measurements in any chosen sequence and repeat them without losing other data. Memory of measurement results is not deleted when the meter is switched off. Thanks to this, the data can be later read or sent to a computer. The number of a current memory cell or memory bank is not changed either.

Note:

– Results of measurements performed for all measuring functions can be stored in one memory cell, excluding U .
– After entering the measurement result, the ID number of the cell is automatically increased.
– It is recommended to delete the memory 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.

5.1 Storing the measurement results in the memory

1. After completing measurement press ENTER.
   The cell is empty.
   The cell is partially occupied by the same type of result, which is to be entered.
   The cell is reserved. Symbols (mnemonics) of stored values are displayed.
   Use and buttons to preview the results stored in the selected cell.
   To change the cell number or bank number:

2.    When the cell number is flashing, use and buttons to set the desired number of the cell.

3. Press SET/SEL button – bank number is flashing.

4.   Use and buttons to set the desired number of the bank.

5. After selecting the desired bank and cell, press ENTER button, to save the result in the memory. Re- cording is indicated by a triple beep. Press ESC to return to the measurement screen without saving.
   If you try to store data in an occupied memory cell, the following warning message will appear:

6. Press ENTER, to overwrite the result or ESC, to cancel and select other cell or bank.

Note:
– After the measurement, its result is shown on the display until:

• the measurement function is changed,
• Auto-OFF function is activated,
• the meter detects interference voltage >50 V,
•  one of the following operations is performed:
  o ESC button is pressed to exit to the voltmeter,
  o next measurement is performed,
  o an entry into the memory is introduced.

– After exiting to the voltmeter by pressing ESC or after saving the results to the memory, the last result may be recalled by pressing ENTER.
– Complete set of results (main result and supplementary results) for a given measuring function and preset measurement settings are stored in the memory.
5.2 Viewing memory data

1. Use or to browse the memory: MEM (blue LED is ON ).
   Use and buttons to preview the results stored in the selected cell.
   To change the cell number or bank number:

2.    When the cell number is flashing, use and buttons to set the desired number of the cell.

3. Press SET/SEL button – bank number is flashing.

4.    Use   and buttons to set the desired num- ber of the bank.

Note:
While viewing RISO results, the field of timer / memory displays alternately bank and cell numbers and the time in which the result was entered into memory. This applies to all RISO and IL measurements. Press ESC to immediately display the basic component of the result.

5.3 Deleting memory data
You can delete the entire memory or its individual banks.
5.3.1 Deleting bank data

1. Use or button to browse the memory: MEM (LED is ON).

2. Set the bank number to be deleted acc. to section 4.2. Set the cell number as “–” (before “01”)…
   … and the cell number will change into “–“, then symbol will be displayed to indicate the readiness for deleting.

3. Press ENTER button.
   and symbols appear, asking you to confirm deletion.

4. Press ENTER button again to delete the selected bank.
   After deleting the bank, the meter beeps three times. Cancel by pressing ESC.

The contents of the bank has been deleted.
5.3.2 Deleting the whole memory

1. Use or button to browse the memory: MEM (LED is ON).

2. Set the bank number s “–” (before “01”)…
   … the bank number will change into “–“, then symbol  will be displayed to indicate the readiness  fordeleting the whole memory.

3. Press ENTER button.
   and symbols appear, asking you to confirm deletion.

4. Press ENTER again.
   After deleting the memory, the meter beeps three times.

The entire contents of the memory has been deleted.

Data transmission

6.1 Computer connection accessories

In order to operate the meter with a PC, an USB cable and appropriate software are required. If the required software has not been purchased with the meter, it may be downloaded from the manufacturer’s website or purchased form the manufacturer or its authorised distributor. The software may be used for many devices manufactured by SONEL S.A. which are equipped with the USB interface or other (depending on the selected device). Detailed information is available from the manufacturer and distributors.

6.2 Data transmission with USB joint

1. Use or button to browse the memory: MEM (LED is ON).

2. Connect the cable to the USB port of the computer and the USB socket of the meter. The meter will displays the message:

3. Start the program for communicating with the meter (processing results) and follow the commands of the software.

Processing the measurement results

The measurement data recorded and stored in the meter may be browsed and analysed using  the SonelReader software. For Riso measurement, the previously defined time interval ChA, allowsthe program user to delete the course of resistance and current as a function of time.

For a measurement with voltage increase method (RampTest), the user basing on performed measurements, may analyse the characteristics of voltage, resistance and current as a function of time.
When the insulation is not damaged, the prepared chart may be used to determine a hypothetical breakdown voltage of the insulation.

Software updates

1. In accordance with the guidelines of Section 3 of this manual, enter the meter software update mode: UPdt
2. Connect the cable to the USB port of the computer and the USB socket of the meter.
3. Start the program for updating the meter and follow the commands of the software.

Power supply

9.1 Monitoring the power supply voltage
The charge level of the battery pack is indicated by the symbol in the right upper corner of the display on a current basis:

The battery pack is charged.
The charge of battery pack is low. Only voltage measurement is available.
No battery icon (when the charger is connected). The battery pack is disconnected or damaged.

The battery pack is fully discharged, all measurements are blocked.
The meter switches off automatically after 5 sec.
9.2 Charging the rechargeable batteries
CAUTION!
MIC-5001 meter is powered from SONEL battery pack, which includes NiMH 9.6 V batteries and it may be replaced only by the manufacturer’s service department.
Battery charger is installed inside the meter and cooperates only with the manufacturer’s rechargeable battery pack. The charger is powered by external power supply adapter. The device may be also powered from the car cigarette lighter socket (12 V only), using an optional charger. Charging commences once the power supply has been connected to the meter regardless of the fact whether the meter is on or off (only the charging mode is different – as described below). When the meter is switched off
– the charging process is indicated on the screen by displaying animated symbol of battery being charged; when the meter is switched off
– the charging is indicated by blinking LED’s of measurement functions (they blink consecutively in red). Charging modes:
– the meter (user interface) is switched off: the battery pack is charged in “quick charging” mode
– the charging process takes approx. 4 hours. Completed charging is indicated by full battery symbol, FULL message and beep. In order to fully turn the device off, unplug the power charger.
– the meter (user interface) is switched on: the battery pack is charged in “background charging” mode – the charging may be longer than the charging process of the device which is switched off. Completed charging is indicated by full battery symbol and beep. If the charging time exceeds 10 hours, the meter will automatically switch off for safety reasons. In order to fully turn the device off, unplug the power charger and turn the meter off.
CAUTION!
Do not power the meter from sources other than those listed in this manual.
Note:
– Due to interferences in the mains, the process of battery pack charging may finish prematurely. When charging time is too short, turn off the meter and start charging again.
Additional information displayed by the meter

again.
** Displayed message: Err ACU X (where X is the number of error)| ** Emergency| Try to start the charging process again. When powering the device from the cigarette lighter socket, check whether the socket supplies 12 V voltage. If this does not help, the battery pack may be damaged – contact the manufacturer’s service.
No battery icon (when the charger is connected)| The battery pack is dis- connected or damaged.| Contact the manufacturer’s service.

9.3 General principles regarding using Ni-MH rechargeable batteries
– Store the he rechargeable batteries (the meter) 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 30°C. If the rechargeable batteries are stored for a long time in a high temperature, then the occurring chemical processes may reduce their lifetime.
– Rechargeable batteries NiMH usually lasts for 500-1000 charging cycles. The rechargeable batteries reach their maximum capacity after being formatted (2-3 charge and discharge cycles). The most important factor which influences the lifetime of rechargeable batteries is the level of their discharge. The deeper the discharge level of the batteries, the shorter their lifetime.
– The memory effect is limited in the case of NiMH batteries. These batteries may be charged at any point with no serious consequences. However, it is recommended to discharge them completely every few cycles.
– During storage of Ni-MH rechargeable batteries they are discharged at the rate of approximately 20% per month. Keeping rechargeable batteries at high temperatures may accelerate this process even 100%. In order to prevent excessive discharge of rechargeable batteries, after which it would be necessary to format them, it is recommended to charge them from time to time (even if they are not used).
– Modern fast chargers detect both too low and too high a temperature of the battery pack and react to the situation adequately. Too low temperature should prevent starting the process of charging, which might irreparably damage rechargeable batteries. An increase of the temperature of the rechargeable batteries is a signal to stop charging and is a typical phenomenon. However charging at a high ambient temperature apart from reducing batteries’ lifetime causes an accelerated increase of their temperature and the result is that the batteries are not charged to their full capacity.
– Please note that when the batteries are charged with a fast-charger they are charged only to approx. 80% of their capacity
– better results can be achieved by continuing charging: the charger enters trickle-charging mode and during the next few hours batteries are charged to their full capacity.
– Do not charge or use the batteries in extreme temperatures. Extreme temperatures reduce the lifetime of batteries and rechargeable batteries . Avoid placing devices powered by rechargeable batteries in very hot environments. The nominal working temperature must be absolutely observed.

Cleaning and maintenance

CAUTION!
Use only the maintenance methods specified by the manufacturer in this 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.

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 order to prevent a total discharge of the battery pack in the case of a prolonged storage, charge it from time to time.

Dismantling and disposal

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 waste electrical and electronic equipment.
Before the equipment is sent to a collection point, do not dismantle any elements.
Observe local regulations concerning disposal of packages, waste batteries and accumulators.

Technical specifications

13.1 Basic data
⇒ Abbreviation “m.v.” used in the specification of accuracy means standard measured value
AC / DC voltage measurement

•  Frequency range for AC: 45 Hz…65 Hz

Measurement of insulation resistance
Measuring range according to IEC 61557-2:
Double-lead measurement

±(3% m.v. + 20 digits)

1.000 MW   9.999 MW| 0.001 MΩ
10.00 MW   99.99 MW| 0.01 MΩ
100.0 MW   999.9 MW| 0.1 MΩ
1.000 GW  9.999 GW| 0.001 GΩ
10.00 GW  99.99 GW| 0.01 GΩ
100.0 GW  999.9 GW| 0.1 GΩ
1.000 TW…5.000 TW| 1 GΩ| ±(4% m.v. + 50 digits)

• When the range is exceeded, the device displays “>xxxxGΩ” (where xxxx is the limit value for the selected range).

Maximum values of the measured resistance, depending on the test voltage, are presented in the table below.

⇒ Note: For insulation resistance below RISOmin there is no accuracy specified because the meter works with the adjustable current limit in accordance with the following formula:

Measurement of leakage current

•  ILmax – maximum current at short circuit of leads,
• resolution and units result from the measurement range of individual insulation resistance.

Measurement of insulation resistance in RampTest mode

± (5% m.v. + 40 digits)

1.000…9.999 MΩ| 0.001 MΩ
10.00…99.99 MΩ| 0.01 MΩ
100.0…999.9 MΩ| 0.1 MΩ
1.000…9.999 GΩ| 0.001 GΩ
10.00…99.99 GΩ| 0.01 GΩ
100.0…999.9 GΩ| 0.1 GΩ
1.000…4.999 TΩ| 0.001 TΩ

•  Table for the measuring voltage increase times t≤5 V/s,
•  For times of measuring voltage increase t>5 V/s, the measurement error of the insulation resistance is not specified,
•  For times of measuring voltage increase t>50 V/s, the measurement result of the insulation resistance is not displayed,
• Measurement possible for the object capacity not exceeding 1 μF.

The measurement of breakdown voltage in Ramp Test function

•  Measurement possible for the object capacity not exceeding 1 μF.

13.2 Other technical data

a) type of insulation acc. to EN 61010-1 and EN 61557 ……………………………………………………. double
b) measurement category acc. to EN 61010-1
▪ for test voltage UISO≤2500 V ………………………………………………………………. III 1000 V (IV 600 V)
▪ for test voltage UISO>2500 V …………………………………………………………………. III 600 V (IV 300 V)
c) degree of housing protection acc. to EN 60529………………………………………………………………. IP65
d) power supply of the meter…………………………………………… SONEL battery pack, NiMH 9.6 V 2 Ah
e) Battery charging time ………………………………………………………………………… usually 4 h, max. 10 h
f) parameters of the external power supply adapter ………………………….. 90 V…264 V, 50 Hz…60 Hz
g) dimensions ……………………………………………………………………………… 200 mm x 150 mm x 75 mm
h) meter weight ………………………………………………………………………………………………. approx. 1.0 kg
i) allowable batter pack charging temperatures in mode 500mA ……………………………. +10°C…+40°C
j) temperatures at which the charging process is interrupted ……………………………. <0°C and ≥ +50°C
k) operating temperature range with external power supply adapter …………………… <0°C and ≥ +50°C
l) storage temperature …………………………………………………………………………………….. -20°C…+60°C
m) operating temperature ………………………………………………………………………………….. -15°C…+40°C
n) humidity …………………………………………………………………………………………………………. 20%…90%
o) reference temperature ……………………………………………………………………………………. +23°C ± 2°C
p) reference humidity …………………………………………………………………………………………… 40%…60%
q) altitude (above sea level) …………………………………………………………………………………….. <2000 m
r) number of measurements RISO acc. to EN 61557-2 ……………………………………………….. approx. 800
s) modular ………………………………………………………………………………………………………………….. LCD
t) memory of measurement results …………………………………………………………………………… 990 cells
u) data transmission …………………………………………………………………………………….. USB connection
v) quality standard …… design, construction and manufacturing are ISO 9001, ISO 14001, ISO 45001
w) the device meets the requirements of EN 61557 standard
x) the product meets EMC requirements (immunity for industrial environment) according to the following standards …………………………………………………………………… EN 61326-1 and EN 61326-2-2
13.3 Additional uncertainties according to IEC 61557-2 (RISO)
Data on additional uncertainties are useful mainly when the meter is used in non-standard conditions and for metrological laboratories for the purpose of calibration.

Manufacturer

The manufacturer of the device and provider of guarantee and post-guarantee service:
SONEL S.A.
Wokulskiego 11
58-100 Świdnica
Poland
tel. +48 74 884 10 53 (Customer Service)
e-mail: customerservice@sonel.com
web page: www.sonel.com

Note:
Service repairs must be performed only by the manufacturer.

NOTES

SON EL S.A.
Wokulskiego 11
58-100 Swidnica
Poland
Customer Service
tel. +48 74 884 10 53 e-mail:
customerservice@sonel.com
www.sonel.com

References

• Sonel S.A.
• Sonel S.A.

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