Micro Ohmmeter

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15kV Insulation Resistance Meter | MIC15k1
R128,722.00 ex vat

15kV Insulation Resistance Meter - Overview

The MIC-15k1 meter is designed to measure the insulation resistance of power objects up to 15kV, i.e. single and multicore cables, transformers, motors and generators, capacitors, switches, and other devices installed in power stations. It is especially recommended for measurements in areas with very high electromagnetic disturbances, e.g. electrical substations with 1200 kV AC and 500 kV DC. Thanks to the 15 kV measuring voltage (in accordance with ANSI / NETA ATS-2009 TABLES 100.1) the meter can be used for measuring objects with a nominal voltage above 34.5 kV.

15kV Insulation Resistance Meter - Features
- Diagnostics of insulation systems based on standard measurements of IR, DAR, PI, SV, RT, and DD, widened with the partial discharge (PD) indicator for each of these measurements
- Testing the electrical durability of tested object - breakdown voltage indication
- High resistance to electromagnetic interferences - uninterrupted work in power stations & close to high voltage transmission lines up to 1200 kV AC & 500 kV DC
- Smooth voltage rise in time function (RT - Ramp Test) - state the partial discharges in the facility and carry out a partial location of their occurrence
- Efficient converter with a power of ~150 W enables insulation burnout, allowing for pinpointing the location of cables and wires short circuit using one of the following:
  - visual method (if power cables are visible along the entire length)
  - reflectometric methods, seismic-acoustic waves detector, or with A-frame to indicate the direction of the fault (the conductor must be buried in the ground with earth direct contact)
- Compatible with external software
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Insulation Resistance Meter 15TΩ | MIC-5010
R49,112.00 ex vat
Insulation Resistance Meter 15 TΩ - Overview

This resistance meter is a reliable tool for measuring insulation resistance up to 15 TΩ. The maximum measurement current is 1.2 mA or 3 mA, which guarantees the charging of an object with a large capacity in a short time. Each measurement, either when the programmed time expires or is manually interrupted, ends with the meter discharging the object. The device has unique algorithms that allow it to recognise the nature of the voltage present on an object, enabling the instrument to determine whether the voltage is the mains voltage or whether it is the voltage generated by an electromagnetic field. This makes it possible to carry out measurements in the presence of very strong electromagnetic fields where this was previously not feasible.

The instrument is equipped with accessories that guarantee safety during measurements with all available voltages - test leads, probes, and crocodile clips meet extremely rigorous standards. The accessories are supplied as standard with a handy carrying case. The high resistance of the device to interference means that cables as long as 20 m can be used for measurements.

Insulation Resistance Meter 15 TΩ - Features
- Voltage range of 50…5000 V, 50…1000 V in steps of 10 V, 1…5 kV in steps of 25 V
- Continuous indication of insulation resistance and leakage current
- Automatic discharge of measured object capacitance voltage after measurement
- Acoustic signaling of 5-second intervals for capturing time characteristics
- Adjustable measuring time - max. 99'59'’
- Metered T₁, T₂, and T₃ test times
- Measurement of coefficients: polarisation (PI), absorption Ab1, Ab2, dielectric absorption ratio (DAR)
- Indication of actual test voltage during measurement
- Test current: 1.2 mA or 3 mA
- Two- and three-lead method of insulation resistance measurement
- Measurements with test leads up to 20 m
- Protection against measuring live objects
- Measurement of capacitance during the measurement of R_ISO
- Step voltage insulation resistance measurement (SV)
- Dielectric Discharge calculation (DD)
- Digital filters for measurements with strong interferences
- Continuity measurement of protective connections & bonding in accordance with EN 61557-4 with current > 200 mA
- Adjustable limits for measured insulation resistance
- Adjustable limits for measured R_CONT resistance
- Measurement of leakage current during insulation resistance testing
- DC and AC voltage measurement in the range of 0…600 V
- 990 cells of memory (11880 records)
- Wireless data transmission via Bluetooth or USB cable
- Power supply from mains or battery pack
- Backlit display
- Backlit keys
- Meets EN 61557 standard
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Winding Resistance Transformer and Motor Meter | MR 8050

Winding Resistance Transformer and Motor Meter - Overview

The MR8050 can measure highly inductive windings of transformers, motors, and reactors with a range of 100µΩ with 0.01µΩ resolution up to 6kΩ. The performance of the measured objects can be up to 800MVA or even more. The magnetic loading of a transformer is performed quickly using a high loading voltage (60V), this is important for time-critical measurements (cooling curves). The unloading of the transformer's core is fast and safe, as the energy is dissipated in the MR8050. The temperature of the measured objects can be pre-set or measured using a PT100 temperature sensor and the resistance is calculated for 20°C using the temperature coefficient for copper or aluminum heat-loss measurements. The resistance at t=0 (disconnection of load) is shown as a result of the internal regression algorithm. Two windings (mostly HV and LV) can be measured simultaneously in the DUAL measuring method. The MR 8050 also features automatic tap-changer control for measuring different taps without interrupting the measuring current.

Winding Resistance Transformer and Motor Meter - Features
- 2 channels for DUAL measurements
- Measuring time short due to very fast uploading
- Discharge time 1/10 of uploading time
- Heat - loss measurements with regression algorithm
- LCD-Display with 240 x 128 pixels with backlight
- USB standard and RS232C 9600 baud
- PT100 connector for PT100 temperature probe
- Tap changer connector for automatic tap control
- Warning system connector for a separate warning light
- Internal test storage for up to 1000 measurements
- Inputs full protected against static and transient voltages
- Wide current ranges from 50mA to 60A
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