Mega ôm kế Sonel MIC-5000

The most important features of MIC-5000 are:

• Insulation resistance measurement:
  - test voltage selection between 250...5000V in 50V intervals, or predefined 250, 500, 1000, 2500, 5000V,
  - on-line insulation resistance measurement or leakage current,
  - automatic discharge of tested object’s capacitance after measurement of insulation resistance,
  - direct measurement of one or two absorption coefficients,
  - acoustic determination of 5 seconds time intervals that facilitates to take time characteristics during insulation resistance measurement,
  - saving measured value of test voltages and selected times T₁, T₂ and T₃ ranging from 1... 600 seconds for the measurements of one or two absorption coefficients (DAR, PI or Ab1, Ab2),
  - indicator of the actual test voltage value during a measurement,
  - protection against live objects.
• AC/DC voltage measurement in range 0...600V.
• Memory for 999 measurement results with an ability to transfer the datato a PC.
• Automatic selection of measurement ranges.
• Powered by rechargeable battery pack:
  - included with the device an external power supply for automatic battery charging to ensure prolonged battery life and optimal working conditions,
  - battery status indicator.
• AUTO-OFF function.
• Meter meets the requirements of the standard EN 61557.

Electric security:
- type of insulation: double, according to EN 61010-1 and IEC 61557
- measurement category: CAT III 600V acc. to EN 61010-1
- measurement category for terminals and circuit 5kV: interpolated III 5000V 
- protection class acc. to EN 60529: IP54

Rated operational conditions:
- operating temperature: -10...+50°C,
- test voltage accuracy (R_obc[Ω]≥1000*Un[V]): -0...+10% of the set value,
- voltage fluctuation due to temperature changes better than: 0,2%/°C,
- converter output current:
min. 1,0mA for rated test voltage
1,0...3,0mA for 2500V
1,0...1,4mA for 5000V
- measurement rate: approx. 1 measure/second
- quality standard: ISO 9001

Other technical data:
- power supply: Ni-MH battery pack
- power supply adaptor: 100...240V
- minimum measurement time 5kV/1mA according to 
EN 61557 (5s/25s) 5h or 600 measurements
- time to auto-off:
mode RISO/IL depends on T2 or T3 (T2/T3 + 300 seconds) settings
other modes 300 seconds

Insulation resistance measurement

• test voltage can be set in the range between 250V and 5000V with 50V intervals
• test voltage accuracy (Robc [Ω] ≥ 1000*UN [V]): 0 +10% of the set value
• voltage fluctuation due to temperature changes - better than 0,2% / °C
• measurement times T1, T2 i T3 for absorption coefficient measurement selected from the range between 1sec and 600sec with accuracy ± 1sec

• measurement range according to PN-EN 61557-2: R_ISOmin...5,0TΩ; R_ISOmin=U_ISOnom/1mA

• for measurements of limited converter current, the accuracy is not specified.

Minimum insulation resistance measured without limited converter current

DC voltage measurement

AC voltage measurement : Mega ôm kế Sonel MIC-5000
50Hz (sinusoidal shape with harmonic contents < 2%)

„m.v.” - measured value.

Leakage current reading

I_pmax - maximum converter current 1,2 ± 0,2 mA, 
ΔI_-, +ΔI₊ - current reading accuracy calculated using the following formula:

U_ISO - test voltage

R - displayed insulation resistance value
ΔR - resistance measurement defined for a particular measurement