The Sonel MIC-10k1 insulation resistance meter stands as a proven preference for experts necessitating utmost precision and expansive measurement capabilities. This particular model ranks among the most advanced insulation resistance meters accessible in the market. It comes highly recommended for professionals in electrical services engaged in the meticulous evaluation of material conditions and the diligent preservation of electroinsulating materials' sound state.

The Sonel MIC-10k1 serves as a comprehensive diagnostic tool, adept at measuring insulation resistance across a spectrum of electrical power engineering components. These encompass single and multi-core cables, transformers, motors, generators, capacitors, circuit breakers, and other equipment within power stations.

Features

Insulation resistance measurement

up to 40 TΩ 

Measurement voltage - any in the range of

50…10000 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 measured object capacitance voltage after the end of 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

Automatic measurement of multiple core cables with the optional AutoISO-5000 adapter (for MIC-10k1 max. measuring voltage 5 kV)

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

The MIC-10k1 meter finds its purpose in gauging the insulation resistance of electro-power components, encompassing single and multi-core cables, transformers, motors, generators, capacitors, switches, and additional apparatuses located within power stations. Furthermore, its specialization lies in assessments within environments prone to heightened electromagnetic disturbances, exemplified by electrical substations featuring voltages of 765 kV or beyond.

Capabilities

Powered by an exceedingly efficient HV inverter, with a testing voltage of 10 kV and a current rating of 6 mA, this meter proves apt for measuring insulation resistance up to a remarkable 40 TΩ. This level of achievement sets these meters apart as unparalleled tools. The inclusion of a "GUARD" wire within the three-wire resistance measurement process eradicates surface leakage currents originating from contaminated insulation. This crucially elevates the reliability of yielded outcomes.

The meter undertakes temperature measurement of the tested object, essential for ascertaining the temperature correction factor for RISO. Additionally, it denotes the Dielectric Absorption Ratio (DAR), Polarization Index (PI), and Dielectric Discharge (DD) values. The device extends the opportunity to evaluate insulation condition by implementing test voltage incrementation through steps (SV). This innovative approach ensures consistent outcomes from an intact dielectric, irrespective of applied voltage. Deviations in resistance values of approximately 25%, observed across the individual steps on the chart, could potentially signal insulation flaws.

A distinctive feature of the MIC-10k1 lies in its capacity to conduct measurements on multi-core cables within a single connection step, achieved through the AutoISO-5000 adapter. This advancement truncates measurement durations, especially for recurring objects like street lighting system cables. With an almost 60 W inverter, the meter enhances cable damage detection, thereby expediting fault location via techniques like reflectometric methods with devices like TDR-420.

Incorporated digital filters, offering averaging intervals of 10, 30, 60, 100, 200 seconds, coupled with an intelligent approach, ensure consistent measurement outcomes even in areas with robust electromagnetic interference.

Data analysis

The device, with its backlight graphical screen may display a waveform of insulation resistance, voltage and current as a function of time. The operator, basing on the trend shown by the waveform, may quickly assess the insulation condition right after starting the measurement. This provides full control over the tested object and clear image of the tested insulation. In addition, with movable tags, the operator may trace the course of the measurement and check resistance values obtained for any time of the current measurement and of measurements made in the past.

After installing mobile application, as a part of the set the user receives Sonel Reader software for collecting historical data and comparing it with current results, transferred from the extensive memory of the meter. This solution helps user to prepare a measurements report, track the insulation degradation and plan the maintenance / repair works.