SONEL MIC-5050 (5kV) Insulation Resistance Tester

The Sonel MIC-5050 insulation resistance meter measures up to 20 TΩ and is vital in electric shock protection testing within AC power networks. It evaluates the safety status of electrical installations. It is ideal for assessing electro-insulating materials and inspecting electrical infrastructure.

The MIC-5050 measures the temperature of the tested object and calculates key indicators such as the Dielectric Absorption Ratio (DAR), Polarization Index (PI), and Dielectric Discharge (DD). The Step Voltage (SV) method evaluates insulation behaviour across multiple voltage levels. Variations of around 25% between voltage steps can indicate potential insulation defects.

The high-voltage inverter generates a 5 kV test voltage and delivers 6 mA of current. It also has a three-wire measurement system, including a "GUARD" wire, built-in digital filters and adjustable averaging times (ranging from 10 to 200 seconds). The graphical display shows real-time data, insulation resistance, voltage, and current as waveforms over time. Analyse data and create reports through the Sonel Reader software and mobile app.

The MIC-5050 is compatible with the AutoISO-5000 adapter, has a 30 W inverter, and is suitable for substations operating at 765 kV or higher, street lighting, or cable installations.

Key Features
Insulation resistance measurement up to 20 TΩ
Measurement voltage - any in the range of 50…5000 V, 50…1000 V with steps of 10 V, 1…10 kV with steps of 25 V
Continuous indication of measured insulation resistance or leakage current
Automatic discharge of the measured object capacitance voltage after the end of the insulation resistance measurement
Acoustic signalling of 5-second intervals to facilitate capturing time characteristics
Adjustable measuring time - up to 99'59'
T1, T2 and T3 test times for measuring one or two absorption coefficients from the range of 1…600 s
Polarization index (PI), absorption coefficients Ab1, Ab2 and dielectric absorption ratio (DAR) measurement
Indication of actual test voltage during measurement
1.2 mA, 3 mA or 6 mA test current
Insulation resistance measurement using two- or three-wire method
Measurements with test leads up to 20 m
Protection against measuring live objects
Measurement of capacitance during the measurement of RISO
Measurement of temperature (with optional probe ST-1)
Step voltage insulation resistance measurement (SV)
Dielectric Discharge calculation (DD)
Damage location (burnout)
Digital filters for measurements with strong interferences
It can work in an environment where electromagnetic interferences of 400 kV occur
Measurement of DC and AC voltages within the range of 0…750 V

What's Included?
Insulation Resistance Meter
Test lead 15 kV 3 m CAT IV 1000 V with crocodile clip, black
Test lead 15 kV 3 m CAT IV 1000 V with crocodile clip, red
Test lead 15 kV 3 m CAT IV 1000 V with crocodile clip, blue
USB cable
Main cable with IEC C13 plug
L4 carrying case
Factory calibration certificate