1. ആമുഖം
The Sonel MIC-5050 is a professional-grade 5kV insulation resistance tester designed for comprehensive electrical insulation diagnostics. This device is capable of measuring insulation resistance up to 20 TΩ, offering a wide range of test voltages from 50V to 5000V. It is engineered for precision and reliability in various industrial and scientific applications, including testing cables, transformers, and electric machines. This manual provides essential information for the safe and effective operation of your MIC-5050.

ചിത്രം 1: മുൻഭാഗം view of the Sonel MIC-5050 Insulation Tester, showing the display, control panel, and connection ports.
2 സുരക്ഷാ വിവരങ്ങൾ
മുന്നറിയിപ്പ്: ഉയർന്ന വോളിയംtage equipment. Improper use can result in serious injury or death. Always adhere to safety procedures.
- Always ensure the device is properly grounded before operation.
- Do not operate the device in wet conditions or in the presence of explosive gases or dust.
- Verify that the object under test is de-energized and isolated from the power source before connecting the tester.
- Use only the test leads and accessories supplied or approved by Sonel.
- After each measurement, allow sufficient time for the measured object's capacitance to discharge automatically.
- Never touch the test leads or the object under test during a measurement.
- Regularly inspect test leads for damage. Replace any damaged leads immediately.
3 പ്രധാന സവിശേഷതകൾ
The Sonel MIC-5050 offers a comprehensive set of features for advanced insulation testing:
- ഇൻസുലേഷൻ പ്രതിരോധം അളക്കൽ: Up to 20 TΩ.
- Adjustable Test Voltage: 50V to 5000V (50-1000V in 10V steps, 1-5kV in 25V steps).
- Continuous Indication: Real-time display of measured insulation resistance or leakage current.
- Automatic Discharge: Safely discharges object capacitance after measurement.
- Timed Measurements: Adjustable measuring time up to 99 minutes, 59 seconds.
- Absorption Coefficients: Measures Polarization Index (PI), Ab1, Ab2, and Dielectric Absorption Ratio (DAR) with metered T1, T2, T3 test times (1-600s).
- ടെസ്റ്റ് കറന്റ്: Selectable 1.2 mA, 3 mA, and 6 mA (±15%).
- അളക്കൽ രീതികൾ: Supports two- or three-wire insulation resistance measurement.
- Live Object Protection: Built-in protection against measuring live objects.
- കപ്പാസിറ്റൻസ് അളക്കൽ: Measures capacitance during RISO testing.
- താപനില അളക്കൽ: Compatible with an additional WASONT1 probe.
- വിപുലമായ ഡയഗ്നോസ്റ്റിക് പ്രവർത്തനങ്ങൾ: ഘട്ടം വോളിയംtage (SV) insulation resistance measurement, Dielectric Discharge (DD) calculation, and damage location (burnout).
- ഡിജിറ്റൽ ഫിൽട്ടറുകൾ: Improves measurement accuracy in high noise environments.
- ചോർച്ച കറന്റ്: Measurement during insulation resistance testing.
- വാല്യംtagഇ അളവ്: ഡിസി, എസി വോള്യംtage measurement in the range of 0-750V.
- Graphical Display: Ability to draw graphs on the display during measurement.
- Innovative Memory: Stores measurement points, facilities, and customer names.

ചിത്രം 2: ഓവർview of Sonel MIC-5050 features and typical application areas such as cables, transformers, and electric machines.
4. പാക്കേജ് ഉള്ളടക്കം
അൺപാക്ക് ചെയ്യുമ്പോൾ, താഴെ ലിസ്റ്റ് ചെയ്തിരിക്കുന്ന എല്ലാ ഇനങ്ങളും ഉണ്ടെന്ന് ഉറപ്പാക്കുക:
- Sonel MIC-5050 Insulation Tester Unit
- USB കേബിൾ
- L4 Carrying Case
- Sonel Reader Software
- 3M 10kV Red Test Lead
- 3M 11kV Black Test Lead
- 3M 11kV Blue Test Lead
- Crocodile Clip Black 11 kV 32A
- Crocodile Clip Red 11 kV 32A
- Crocodile Clip Blue 11 kV 32A

Figure 3: Visual representation of standard accessories included with the MIC-5050, such as test leads, crocodile clips, USB cable, and carrying case. Optional accessories are also shown.
5. സജ്ജീകരണവും അടിസ്ഥാന പ്രവർത്തനവും
5.1 പ്രാരംഭ സജ്ജീകരണം
- അൺപാക്ക്: Carefully remove the MIC-5050 and all accessories from the carrying case.
- പവർ ഓൺ: Connect the device to a power source using the provided USB cable or ensure the internal battery is charged.
- സ്വയം പരിശോധന: The device will perform a self-test upon power-on. Wait for it to complete.
- Language/Settings: Navigate through the menu to set your preferred language and other basic settings if prompted.
5.2 ടെസ്റ്റ് ലീഡുകൾ ബന്ധിപ്പിക്കുന്നു
For insulation resistance measurements, connect the test leads as follows:
- Connect the red test lead to the 'L' (Line) terminal of the tester.
- Connect the black test lead to the 'E' (Earth) terminal of the tester.
- For three-wire measurements, connect the blue test lead to the 'G' (Guard) terminal.
- Attach the crocodile clips securely to the test leads and then to the object under test, ensuring good contact.
5.3 Basic Insulation Resistance Measurement (RISO)
- മോഡ് തിരഞ്ഞെടുക്കുക: Use the rotary switch or menu to select the 'RISO' measurement mode.
- Set Test Voltage: Adjust the desired test voltage (e.g., 500V, 1000V, 5000V) using the appropriate controls.
- Set Test Time: If a timed measurement is required, set the duration.
- Initiate Measurement: Press the 'START' button. The device will apply the test voltage and display the insulation resistance.
- Observe Results: The display will show the resistance value and leakage current.
- പൂർത്തീകരണം: Once the measurement is complete, the device will automatically discharge the object. Wait for the voltage to drop to a safe level before disconnecting.
6. Advanced Measurement Functions
6.1 Polarization Index (PI) and Dielectric Absorption Ratio (DAR)
These tests assess the quality of insulation by measuring resistance at different time intervals.
- Select PI/DAR mode.
- The device will automatically perform measurements at specified T1, T2, and T3 intervals (e.g., 30s, 60s, 10min).
- The PI (R10min/R1min) and DAR (R60s/R30s) values will be calculated and displayed.
6.2 ഘട്ടം വാല്യംtage (SV) Test
The SV test applies increasing വാല്യംtage steps to detect insulation weaknesses that might not be apparent at a single voltage.
- Select SV test mode.
- വോളിയം ക്രമീകരിക്കുകtage steps and duration for each step.
- The device will automatically execute the test, displaying resistance at each step.
6.3 Dielectric Discharge (DD) Test
The DD test helps identify localized defects in multi-layer insulation by measuring the discharge current after a high voltagഇ അപേക്ഷ.
- Select DD test mode.
- The device will charge the insulation, then discharge it, measuring the residual current.
- The DD value will be calculated and displayed.
6.4 Leakage Current and Capacitance Measurement
The MIC-5050 can display leakage current during RISO tests and measure capacitance of the object under test.
- Leakage current is typically displayed alongside insulation resistance.
- Capacitance is measured automatically during RISO tests and displayed on the screen.
6.5 ഡിജിറ്റൽ ഫിൽട്ടറുകൾ
When performing measurements in environments with high electromagnetic interference, activate the digital filter function via the menu to improve measurement stability and accuracy.

Figure 4: Graph illustrating the measurement range capabilities of various Sonel insulation testers, including the MIC-5050, alongside an image of the device in an industrial testing environment.
7 സാങ്കേതിക സവിശേഷതകൾ
Below are the key technical specifications for the Sonel MIC-5050:
| പരാമീറ്റർ | സ്പെസിഫിക്കേഷൻ |
|---|---|
| ഇൻസുലേഷൻ റെസിസ്റ്റൻസ് റേഞ്ച് | 0 ... 20 TΩ |
| വോളിയം അളക്കുന്നുtage | 50V ... 5000V (adjustable) |
| ടെസ്റ്റ് കറന്റ് | 1.2 mA, 3 mA, 6 mA (±15%) |
| വാല്യംtagഇ മെഷർമെന്റ് (എസി/ഡിസി) | 0 ... 750 V |
| കപ്പാസിറ്റൻസ് അളക്കൽ | During RISO measurement |
| പ്രവർത്തന താപനില | -20°C ... +50°C |
| സംഭരണ താപനില | -25°C ... +70°C |
| ഈർപ്പം | 20% ... 90% |
| പ്രവേശന സംരക്ഷണം | IP67 (closed case) |
| വൈദ്യുതി വിതരണം | Li-Ion 14.8V rechargeable battery, 90V-260V 50/60Hz from electric grid |
| അളവുകൾ | 390 x 308 x 172 മിമി |
| ഭാരം | ഏകദേശം 5.6 കിലോ |
| ഡാറ്റ ട്രാൻസ്മിഷൻ | USB, ബ്ലൂടൂത്ത് |
| മെമ്മറി | 990 cells (10,000 records) |

Figure 5: Detailed technical specifications for the Sonel MIC-5050, including measurement ranges, accuracy, and environmental conditions.
7.1 Charging and Discharging Characteristics
The following tables provide typical charging and discharging times for the tested object at various measurement voltages and capacitances.
| വോളിയം അളക്കുന്നുtage | Capacitance [µF] | Charging Time (Maximal) [s] | Discharging Time to 50V [s] |
|---|---|---|---|
| 5 കെ.വി | 1 | 4.3 | 0.4 |
| 10 കെ.വി | 1 | 4.3 | 0.4 |
| 15 കെ.വി | 1 | 4.3 | 0.4 |
Note: These values are approximate and may vary based on specific test conditions and object characteristics.
8. പരിപാലനവും പരിചരണവും
- വൃത്തിയാക്കൽ: Clean the device casinഗ്രാം വിത്ത് എ സോഫ്റ്റ്, ഡിamp തുണി. ഉരച്ചിലുകളുള്ള ക്ലീനറുകളോ ലായകങ്ങളോ ഉപയോഗിക്കരുത്.
- ബാറ്ററി: Ensure the internal battery is charged regularly, especially if the device is stored for extended periods.
- സംഭരണം: Store the device in its carrying case in a dry, dust-free environment within the specified storage temperature range.
- കാലിബ്രേഷൻ: Regular calibration by authorized service centers is recommended to maintain measurement accuracy.
9. പ്രശ്നപരിഹാരം
If you encounter issues with your MIC-5050, consider the following:
- ശക്തിയില്ല: Check battery charge or external power connection. Ensure the power cable is securely connected.
- അസ്ഥിരമായ വായനകൾ: Verify test lead connections. Ensure the object under test is properly isolated. Activate digital filters in noisy environments.
- പിശക് സന്ദേശങ്ങൾ: Refer to the on-screen error codes or the full user manual for specific troubleshooting steps.
- Measurement Fails: Ensure the test voltage is appropriate for the insulation being tested. Check for short circuits or open circuits in the test setup.
For persistent issues, contact Sonel technical support.
10. വാറൻ്റിയും പിന്തുണയും
10.1 വാറൻ്റി വിവരങ്ങൾ
The Sonel MIC-5050 comes with a 24-month (two-year) warranty from the manufacturer, covering defects in materials and workmanship under normal use. Please retain your proof of purchase for warranty claims.
10.2 Software and Virtual Instruments
The included Sonel Reader Software allows for data analysis and report generation. For additional resources and virtual instrument applications, visit the official Sonel webസൈറ്റ്:
Sonel Virtual Instrument Applications
For technical assistance, service, or further inquiries, please contact your authorized Sonel distributor or visit the official Sonel webപിന്തുണ ബന്ധപ്പെടാനുള്ള വിവരങ്ങൾക്കുള്ള സൈറ്റ്.





