Resistance Instruments

Resistance Instruments normally measure resistance to indicate the condition of a component or a circuit. Resistance is the electrical quantity that measures how the device or material reduces the electric current flow through it.

Universal Earth Resistance and Resistivity Meter | MRU-30
R22,375.00 ex vat
Universal Earth Resistance and Resistivity Meter - Overview

This compact earth resistance and soil resistivity meter enables efficient and easy earth resistance measurement. The MRU-30 meter is surprisingly versatile in nature. It can be used to perform single earthing measurements as well as multiple earthing measurements using additional clamps or electrodes. Additional capabilities include measurement of soil resistivity using the Wenner method, as well as verification of the continuity of equalising connections and protective conductors. Another advantage is the clear transmission of information, which alerts the user to possible dangers or detected irregularities. Information appears on the screen both before and after the test. Applications include measuring single and multiple earthings using auxiliary electrodes and/or clamps, ground resistivity (Wenner method), as well as verifying the continuity of equipotential bondings and protective conductors. It has a high immunity to interference, allowing it to be used even in difficult conditions. It is simple and intuitive to operate, making the measurements easier and faster. The meter has internal memory. The measurement results can be transmitted to a computer for data processing and preparation of documentation from the grounding tests.

Universal Earth Resistance and Resistivity Meter - Features
- Measurement of auxiliary electrode resistances R_S and R_H
- Measurement of interference voltage
- Measurement in the presence of interference voltages in networks with frequencies of 50 Hz and 60 Hz
- Selection of maximum measurement voltage (25 V and 50 V)
- In ground resistivity measurements, distances between electrodes can be input in meters (m) or feet (ft)
Measurement methods
- 3-pole and 4-wire method – measurement of earthing systems using auxiliary probes
- 3-pole method with clamp – measurement of earthing systems with multiple earth electrodes
- Two-clamp method – measurement of earthing system when the auxiliary probes cannot be used
- Earth resistivity – Wenner method
- Resistance of earth connection and equipotential bonding measured using current ≥200 mA with auto-zero function – meets the requirements of EN 61557-4
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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 | MIC-2511
R25,272.00 – R52,647.00 ex vat
Insulation Resistance Meter - Overview

Measure insulation resistance up to 2 TΩ. The MIC-2511 may be used to measure the insulation resistance using test voltage up to 2500 V. This surprising tool includes numerous functions. Its parameters, robust casing (IP65 protection level), low battery power consumption, and the ability to recharge during measurements make it a reliable tool that can be used in many areas. The device has built-in help screens with measurement diagrams so you can easily and quickly check and make sure how to connect to a given system depending on the type of measurement performed. It is ideal for checking industrial installations and catenary networks and is also successfully used in residential buildings. It also enables the testing of surge protection devices (SPD). The advantages of this meter are especially appreciated by electricians working in maintenance, testing motors, cables and street lighting. It is also useful for measurements during the construction and maintenance of photovoltaic installations. It is a reliable solution created for the needs of telecommunications network installers and heating network operators, facilitating the control of the alarm system of pre-insulated pipes. Also available as an EPA kit.

Insulation Resistance Meter - Features
Measurement voltage within the range of 10…2500 V: selected from 10 V, 25 V, 100 V, 250 V, 500 V, 1000 V, 2500 V, or 10…2500 V selected in steps of 10 V

Insulation resistance measurements with a voltage of 10 V of the supervisory loop of fire alarm systems

Charts plotted on display during measurements

Measurements in electrostatic protected areas (EPA)

Correction of insulation resistance result to reference temperature

Continuous reading of measured insulation resistance or leakage current

Automatic discharge of the measured object’s capacitance upon completion of insulation resistance measurement

Sound signaling of five-second time intervals, facilitating capture of time characteristics

Timing of measurement times T₁, T₂ and T₃ for measurement of one or two absorption coefficients (Ab1, Ab2 or DAR, PI) within the range of 1… 600 s

Automatic measurement of all resistance combinations of 3-, 4- and 5-core cords and power cords using the optional AutoISO-2511 adapter

Reading of actual measurement voltage during measurement

Measurement current <2 mA

Protection against measurement of live objects

Two- or three-lead method of insulation resistance measurement
Additional features
Measurement of leakage current during measurement of R_ISO

Capacitance measurement during measurement of R_ISO

Low-voltage measurement of circuit continuity and resistance

Temperature measurement (with the use of the optional ST-1 temperature probe)

Measurement of direct and alternating voltages within the range of 0...1500 V

9999-entry memory, data transmission to PC via USB cable

Power supplied by rechargeable battery

Backlit keyboard

The instrument meets the requirements laid down by standard EN IEC 61557

https://www.youtube.com/watch?v=44SqibjYEl4
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Insulation Resistance Meter | MIC-5
R6,205.00 ex vat
Insulation Resistance Meter - Overview

The MIC-5 is a handy insulation resistance meter that any self-respecting electrician can sling around his neck like a doctor's stethoscope in order to always have it at hand. The instrument allows for simple and quick insulation evaluation, checking continuity of connections and measuring voltage on the object.

Insulation Resistance Meter - Features
- Insulation resistance measurement:
  - selectable measurement voltage: 250 V or 500 V
  - continuous indication of measured resistance
  - very long operation time with one set of batteries: 14 h for measurement at U_ISO = 250 V, 11 h for U_ISO = 500 V
  - automatic discharge of tested object’s capacitance after measurement of insulation resistance
  - acoustic determination of 5 seconds time intervals that facilitates to take time characteristics during insulation resistance measurement
  - measurement current up to 1.4 mA
  - protection against measurement of live objects
- Low voltage resistance measurement in range of 0...1999 Ω:
  - measurement with current of <10 mA with resolution of 0,1 Ω
  - quick acoustic signalling for circuit resistance below 10 Ω
- AC/DC voltage measurement in range of 0...600 V:
  - automatic detection of voltage type (AC/DC)
- Autoranging
- Suitable for 50 Hz and 60 Hz network
- Backlit LCD display
- AUTO-OFF function
- Built-in flashlight
- Meets the requirements of IEC 61557-1 and IEC 61557-2
https://www.youtube.com/watch?v=xXMt4bBdRDk

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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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MMR-6700 Micro Ohmmeter
R149,029.00 ex vat
MMR-6700 Micro Ohmmeter - Overview

This versatile and multifunctional micro ohmmeter presents a single device for HV circuit breaker and transformer measurements. Its modern design and advanced solutions enable measurements of resistive objects with high current. The device has a module for the measurement of inductive objects with current of up to 10 A. It also comes with temperature measurement and automatic compensation of measurement. Additionally, the micro ohmmeter has a recording function. The special measurement algorithms and additional functionalities allow you to select the appropriate measurement method depending on the nature of the measured object and the measurement conditions, thus increasing the measurement capabilities and application areas of the device. It has modern, easy-to-read interfaces, and wireless communication, and cooperates with a computer, printer, and a 2D code reader.

MMR-6700 Micro Ohmmeter - Features
- measures resistive objects with current up to 100/200 A
- measures induction objects up to 10 A
- measures objects earthed on both sides (i.e. main joints of HV switches)
- measures one or two-way current flow
- high immunity to outside interference
- measures temperature of windings
- automatic compensation temperature of objects measured
- state of art interface with a touch screen and expanded memory
- cooperation with a printer and a 2D barcode reader
- WiFi, USB, and LAN communication
- IP67
- suitable where electromagnetic interferences of 400 kV occur
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Transimpedance Amplifier High Impedance Measurement | TA107
R35,696.00 ex vat
Transimpedance Amplifier High Impedance Measurement - Overview

The TA107 Transimpedance Amplifier provides a solution for high impedance analysis applications by measuring the current flowing through a component or material under test with an innovative earth-referenced transimpedance amplifier technique. The TA107 Transimpedance Amplifier supplements our existing impedance analyser range to provide a solution for a wide range of measurement applications.

Transimpedance Amplifier High Impedance Measurement - Features
- 1MΩ to 100GΩ range with PSM1735
- DC to 100kHz Frequency range
- Adaptor or direct PSM power
- Simple connection and operation
Datasheet

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Mega Ohm Meter | MIC-10
R10,492.00 ex vat

Mega Ohm Meter - Overview

The MIC-10 meter is designed to perform electrical tests, which establish the safety of insulation in systems. This is a very handy digital multimeter tool, measuring insulation resistance up to 10GOhms with up to 1000V measuring in accordance with IEC61557-2.

Mega Ohm Meter - Features
- Continuous indication of insulation resistance or leakage current
- Select test voltages of: 50, 100, 250, 500, 1000 V
- Automatic discharge of capacitance of tested object after the insulation resistance measurement
- Acoustic signalling of five-second periods to facilitate obtaining time characteristics
- Indication of actual test voltage during the measurement
- Protection against measuring live objects
- Three-lead measurement
- Continuity measurement of protective and equipotential conductors according to EN 61557 - 4 with >200 mA current
- Low-voltage circuit continuity and resistance measurement
- Circuit resistance measurement (<1999 ) with the <15 mA current
- Sound signal if circuit resistance is below 30Ω
- Capacitance measurement during the R_ISO measurement
- Measurement of alternating and direct voltages in the 0...600 V range
- Power supply: 4 AA disposable or rechargeable batteries, monitoring of power supply voltage
- Meter conforms to EN 61557
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Earth Resistance Meter MRU-10
R12,334.00 ex vat

Earth Resistance Meter - Overview

The Sonel MRU-10 is a simple meter that allows you to measure earthing resistance using technical methods. It also measures grounding resistance using the pole method. The instruments are easy to handle, intuitive, resistive to interference, and accurate. This unit checks the quality of the grounding system based on the received measurement result. The device is an excellent choice for electrical technicians, installation contractors and professionals dealing with grounding measurements. This Earth Resistance meter is durable with firm housing and has a big and clear display with an ergonomic design. Ideal to use both in the field and in most working environments.

Earth Resistance Meter - Features
- Measure earthing resistance using auxiliary electrodes method 2-pole and 3-pole
- Measurement of resistance of auxiliary electrodes RS and RH
- Measurement in the presence of interference voltage in the power network with frequency 50 Hz and 60 Hz
- Selection of maximum measuring voltage (25 V and 50 V)
- Measurement category: CAT IV 150 V acc. to EN 61010-1
- Protection class acc. to EN 60529: IP67
- Indication of battery state
- LCD display: segment, backlit,
- Number of measurements (RE3P) carried out of set of batteries: > 3000
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Earth Resistance Meter | MRU-200 GPS
R49,225.00 – R53,851.00 ex vat

Earth Resistance Meter - Overview

The MRU-200 earth resistance meter is unique in the market as it uses all measurement methods to get earth resistance. Making sure the ground system has a low earth ground resistance when initially installed is a very important safety check. Making sure the low resistance is maintained is just as important. Resistance of the grounding system might increase when the ground rods are corroded. Over time, soil with high moisture, salt content and high temperatures will corrode connections. It is therefore recommended that the earthing be checked periodically to make sure there is not a big increase in resistance.
Earth Resistance Meter - Features
- earth resistance measurement with 2-pole, 3-pole,4-pole method
- two clamps earth resistance measurement without auxiliary test probes
- impulse earth impedance measurement, three kinds of measuring impulse 4/10μs, 8/20μs, 10/350μs
- earth resistance measurement without disconnecting measured earths (using clamp)
- continuity measurement
- leakage current measurement
- optional built-in GPS
- GPS coordinates of the measurement are stored in meter memory (with GPS model)
- measurement of resistance of auxiliary electrodes R_S and R_H
- measurement of interference voltage
- measurement of interference frequency
- measurement in the presence of interference voltage in the power network
- with frequency 16 2/3 Hz, 50 Hz, 60 Hz and 400 Hz (with automatic selection of proper frequency of measuring signal)
- selection of maximum measuring voltage (25 V and 50 V)
- introducing the distance between the electrodes for the resistivity in meters (m) and feet (ft)
- memory of 990 measurements (10 banks of 99 cells each)
- calibration of clamp used
- real-time clock (RTC)
- data transmission to the computer USB and Bluetooth*
- indication of battery state
https://www.youtube.com/watch?v=vKKubPxECV8
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Loop Impedance Meter | MZC-304
R16,170.00 ex vat

Loop Impedance Meter - Overview

The MZC-304 meter is designed for testing the protection against electric shock in the mains systems. The meter is used to make measurements which determine the electrical installation safety level.

Loop Impedance Meter - Features
- Measurements of impedance in a short circuit loop
  - L-PE circuit
  - L-N, L-L circuit
  - L-PE(RCD) circuit - without tripping the circuit breaker ≥ 30 mA
- Low voltage resistance measurement
- Continuity measurement - DC current +200 mA with wire resistivity rest
- Low current resistance measurement with acoustic signalling
- The measurements are possible in installations 220/30 V, 240/415 V with frequency range 45...65 Hz
- Memory of 10 banks of 99 cells each (min. 10000 records)
- Radio wireless interface communication
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Short-Circuit Loop Impedance Meter MZC-20E
R8,800.00 ex vat

Short-Circuit Loop Impedance Meter - Overview

The meter has been designed for fitters and measurement technicians performing services in residential buildings, office blocks, manufacturing plants and any facilities possessing a low-voltage electrical system. The instrument is also recommended for electrical maintenance personnel.

Short Circuit Loop Impedance Meter - Features
- power supply LR6 alkaline batteries or NiMH rechargeable AA batteries (4 pcs.)
- dimensions 220 x 98 x 58 mm
- instrument weight incl. batteries 509g
- storage temperature -20...+70 C^o - working temperature -10...+50 C^o
- humidity 20...80%
- reference temperature +23 ± 2 C^o
- reference humidity 40...60%
- altitude < 2000m
- Auto-OFF time max. 900 sec.
- number of Z measurement (for rechargeable batteries) >5000 (2 measurement/minute)
- display LCD segment
- type of insulation double, according to EN 61010-1 and IEC 61557
- measurement category III 300 V according to EN 61010-1
- protection class acc. to EN 60529 IP67
- quality standard developed, designed and manufactured acc. to ISO 9001
- the instrument is compliant with the requirements of IEC 61557
- the instrument complies with PN-EN 61326-1:2006 and EN 61326-2-2:2006
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10kV Insulation Resistance meter up to 40 Tera-Ohm | MIC10k1
R94,201.00 ex vat

10kV Insulation Resistance meter - Overview

This insulation resistance meter has a digital filter function for measurements in a high-noise environment. Continuity measurement of protective connections and equipotential bonding in accordance with EN 61557-4 with current > 200 mA. Adjustable limits for measured resistance R_ISO and R_CONT. Measurement of leakage current during insulation resistance testing. DC and AC voltage measurement in the range of 0...750 V. Drawing graphs on the display during measurement. Innovative memory with the option to describe measurement points, facilities, and names of customers. Can be operated with a mini Bluetooth keyboard (optional). Stable measurements in noisy environments such as 765 kV substations. Graphic LCD 5,6'’ backlit display. Keyboard backlit. Power supply from battery packs. Built-in fast charger. The instruments meet the requirements of the EN 61557 standard.

10kV Insulation Resistance meter - Features
- clear visible display
- measurement voltage in the range of: 50…10000 V (50...1000 V at 10 V and 1...10 kV at 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 seconds intervals to facilitate capturing time characteristics
- adjustable measuring time to 99'59'’
- metered 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 and 5 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 additional AutoISO-5000 adapter (for MIC-10k1 max. voltage 5 kV)
- measurement of capacitance during the measurement of R_ISO
- measurement of temperature (with additional probe - WASONT1)
- step voltage insulation resistance measurement (SV)
- Dielectric Discharge calculation (DD)
- location of damage (burnout)
https://www.youtube.com/watch?v=ibX7f55ngzc

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Multi-function Electrical Installation Meter | MPI-540
R63,214.00 – R104,542.00 ex vat
Multi-function Electrical Installation Meter - Overview

The MPI-540 meter has models for home and industrial electrical installations, photovoltaic installations and vehicle charging stations. Measurements taken by these devices determine the safety of the installation. The user also has the option to register the parameters of the electrical network's location.

Verification of the quality of electricity and measurement of the parameters that protect against electric shock is easy with this single, universal device. This superior meter combines the measurement capabilities of several devices while ensuring quality and accuracy. Significant automation of measurements with the meter makes it possible to test functioning of residual current circuit breaker in the auto mode, as well as in pre-programmed measuring sequences (so-called auto-tests), which can also be extended with your own sequences. Automatic measurement of insulation resistance of 3-, 4- and 5- wire conductors is possible by using additional the AUTO ISO-1000C adaptor.

This device is ideal for all measurements for the commissioning of electrical installations in accordance with applicable regulations.

Multi-function Electrical Installation Meter - Features
- 7 " TFT LCD touch screen with a resolution of 800 x 480 pixels
- Removable memory card - easy increase of memory capacity
- One device can be used for all measurements for commissioning of electrical installations in accordance with applicable regulations:
  - short circuit loop impedance (also in circuits with RCDs)
  - parameters of RCDs
  - insulation resistance
  - earthing resistance (4 measurement methods + ground resistivity measurement)
  - continuity of protective and equipotential bondings
  - lighting measurement
  - phase sequence tester
  - motor rotation direction tester
- three-phase power network data logger can record 50/60 Hz power network parameters in acc. to S class of EN 61000-4-30:
  - voltage L1, L2, L3, - average values in the range up to 500 V,
  - L1, L2, L3 currents, - average values, current measurement in the range up to 3 kA (depending on the current clamps used)
  - frequency in the range of 40Hz - 70Hz
  - active (P), reactive (Q) and apparent (S) power
  - power factor (PF), cosφ
  - harmonics (up to 40 in voltage and current)
  - total harmonic distortion (THD) for current and voltage
https://www.youtube.com/watch?v=y6kt_aElw58

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Cropico DO4000 MilliOhm Meter
R20,480.00 ex vat
Cropico DO4000 MilliOhm Meter - Overview

This portable milliohm meter is a practical digital instrument measuring low resistance. Suitable for use in multiple industries, workshops, field or test labs such as in Aerospace, Automotive, Manufacturing, Military, and Utilities. This milliohm meter is of rugged construction and contained in a sturdy plastic case with easy-to-use buttons. The Series 4000 has many advanced features including auto-ranging, forward and reverse current measurement with auto average, true current zero, protection up to 415 volts rms, digital calibration and long scale length, 4000 count and auto power down to maximise battery life. Supplied with batteries and measuring leads.

Cropico DO4000 MilliOhm Meter- Features
- True 4 terminal Kelvin/Thomson principle measurement eliminates lead resistance errors
- True zero capabilities Buttons to null measurement offsets
- Digital calibration
- Open circuit lead warning on display
- 15mm LCD 4000 count with automatic decimal point and polarity indication
- Manual Auto Ranging selection
- Calibration Digital security key protected
- Removable pack with 5 1.5V non-rechargeable batteries.
- Separate rechargeable pack, charger and docking station as optional extras
- Safety EN 61010-1 EMC-EN 61236
- Forward and Reverse current measurement with auto Averaging to compensate for thermoelectric effect
https://www.youtube.com/watch?v=N6xrnt2vz1Y

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