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MI 3144 Euro Z 800V and MI 3143 Euro Z 440V guide EN

MI 3144 Euro Z 800V and MI 3143 Euro Z 440V guide EN
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MI 3144 Euro Z 800V and MI 3143 Euro Z 440V guide EN

Product catalog summary
Main Features:
The MI 3144 Euro Z 800 V and MI 3143 Euro Z 440 V are high-precision impedance testers designed for industrial safety and quality assurance. They feature a 4-wire 300A Z Line and Z Loop Impedance Tester, with the MI 3144 supporting high range 800 V AC networks and the MI 3143 supporting 440 V AC networks. Key features include high current dR 300A measurements, earth leakage relay testing, and ground fault analysis.
Applications:
These instruments are suitable for live power transformer testing, high-frequency installation impedance testing, DC network resistance measurements, and grounding system integrity testing. They support Bluetooth communication and can be operated via an Android app or compatible devices like the MI 3155 EurotestXD.
Standards and Safety:
The devices comply with standards such as EN 61326 for electromagnetic compatibility and EN 61010 for safety. They are designed for CAT IV 600 V safety category and offer IP65 protection when the case is closed.
Technical Specifications:
The MI 3144 and MI 3143 offer a measuring range for impedance from 12.0 mΩ to 19.99 Ω, with a resolution of 0.1 mΩ. They support a nominal frequency range of 16 to 420 Hz and a voltage range up to 800 Vac. The instruments are powered by a Li-ion battery or mains and feature a robust design for field testing.
Ordering Information:
The standard set for each model includes the instrument, various test leads, crocodile clips, a Metrel ES Manager license, and a carrying bag. Optional accessories include additional test leads, clamps, and a jumbo case for enhanced portability.
Field Test Evaluation:
After extensive field testing, the MI 3144 and MI 3155 Eurotest XD are recommended for their powerful industrial safety and quality testing capabilities. They are noted for their high precision and robust performance in demanding industrial environments.
Overview: The document provides a comprehensive guide on impedance testing using the MI 3144 and MI 3143 instruments, focusing on high precision and reliability in various electrical systems. It covers testing procedures, standards, and recommendations for ensuring safety and functionality in industrial electrical installations.
Specifications: The MI 3144 impedance tester is capable of performing tests with a 300 A current, offering robust results with high noise immunity. It supports live testing in CAT IV environments with voltages up to 800 V and frequencies ranging from 16 to 420 Hz. The device uses a four-wire Kelvin connection for high precision and stability.
Procedures: The document outlines procedures for measuring short-circuit currents in three-phase AC systems according to IEC 60909-0. It emphasizes the importance of comparing results between the source and load to identify potential faults. The use of external clamps and a floating synchronized voltmeter is recommended for accurate current measurement.
Standards and Recommendations: The document references international standards such as IEC 60909-0 and IEEE-81.2012 for testing procedures. It recommends periodic inspections and comparisons of test results to predict maintenance needs and ensure system reliability.
Applications: The MI 3144 is suitable for various applications, including testing of live power transformers, DC networks, and grounding systems. It supports high current testing for lightning protection systems and evaluates the integrity of grounding grids.
Key Data and Calculations: The document includes formulas for calculating impedance and short-circuit currents, emphasizing the importance of evaluating resistance, inductance, and voltage drops. It also provides methods for measuring step, touch, and transfer voltages to ensure safety during fault conditions.
Conclusion: The MI 3144 and MI 3143 instruments offer a reliable solution for impedance testing in industrial settings. By following the outlined procedures and standards, users can ensure the safety and functionality of electrical systems, predict maintenance needs, and prevent potential faults.
Specifications and Safety Measures:
The document outlines safety precautions for working around metal constructions, buildings with Lightning Protection Systems (LPS), and areas involved in energy production, generation, distribution, or transmission. It highlights the risk of dangerous voltages being transferred over long distances through exposed parts such as meshes, fences, pipes, pylons, bridges, rails, cable shields, and metal stripes.
Testing Equipment and Procedures:
The document describes the use of well-conducted probes, including weights of 25 kg/200 cm² or step-on plates, for proper grounding connection. Copper probes weighing 5 kg can be combined with a 25 kg weight for wet concrete material connections. The test duration is short (0.01s), ensuring safety for people in public areas.
Touch Voltage Calculation:
The instrument screen allows for the selection of Touch Voltage calculation parameters. The fault current is manually inserted, representing the predicted power of a lightning strike (e.g., 50 kA). The measurement is scaled to assess potential risks around lightning systems using a body simulator A 1597.
Permissible Body Current and Touch Voltage:
A table provides permissible body current (IB) and calculated permissible touch voltage (UTp) values based on fault duration (tf). For example, at a fault duration of 0.05s, the permissible body current is 900 mA, and the permissible touch voltage is 716 V.
Equipment Features:
The equipment includes a body resistance simulation with a 1 kOhm adapter A1597 for accurate Touch Voltage calculation. It is portable, housed in an IP67 protected case, and equipped with robust wheels and an extended arm for easy transport.
Manufacturer Information:
The document is produced by METREL d.d., a measuring and regulation equipment manufacturer based in Slovenia. Contact details and a disclaimer about potential differences in product photographs and technical changes are provided.
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Catalog excerpts

MI 3144 Euro Z 800V and MI 3143 Euro Z 440V guide EN-1

Measuring instruments and testers www.metrel.si Measuring and Regulation Equipment Manufacturer

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MI 3144 Euro Z 800V and MI 3143 Euro Z 440V guide EN-2

Most powerful Industrial Safety & Quality bundles MI 3144 Euro Z 800 V and MI 3143 Euro Z 440 V MI 3144 Euro Z 800 V or MI 3143 Euro Z 440 V both are fully operated test instruments that could be driven through Android Application aMESM or one of supported instrument like MI 3155 EurotestXD or MI 3325 MultiservicerXD. Powerful features for industrial environment are implemented where hi test current is crucial demand to evaluate results. MAIN FEATURES High Precision 4-wire 300A Z Line and Z Loop Impedance Tester High Range 800 V / 16 ... 420 Hz AC Networks High Range 440 V / 16 ... 420 Hz AC...

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MI 3144 Euro Z 800V and MI 3143 Euro Z 440V guide EN-3

Eurotest XD/XC, Multiservicer XD or Android App APPLICATIONS GENERAL DATA • Live Power Transformer High Precision 4-wire 300 A Z Line / Loop Impedance Testing • Partial Voltage Drops and Partial Clamp Current’s Path* Resistances • Airports High Frequency Band 16 ... 420 Hz Installation Impedances testing • DC Networks’ and Power Sources’ Line and Loop Resistances • Flex & Iron One-Clamp High Current dR 300 A Grounding method for Lightning systems • High Current dR 300 A Integrity of Grounding system with Flex and Iron One-Clamp method • ELR (MRCD) trip-out Current and trip-out Time testing •...

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MI 3144 Euro Z 800V and MI 3143 Euro Z 440V guide EN-4

Most powerful Industrial Safety & Quality bundle MI 3144 Euro Z 800 V and MI 3143 Euro Z 440 V

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MI 3144 Euro Z 800V and MI 3143 Euro Z 440V guide EN-5

Automatic trip out protection ability test in case of faults in transformers, generators, turbines, contactors, distribution boards and switchyards whenever energetic loads and sources of protection exceed 200A need precise, robust and accurate measuring method to evaluate results for first inspection and periodical predictive maintenance or fast troubleshooting on any industrial platform. High precision line and loop impedances on AC and DC circuits is on the top of the importance list for high test current, 4-wire connectivity, temperature management with selectable test loads, calculations...

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MI 3144 Euro Z 800V and MI 3143 Euro Z 440V guide EN-6

Most powerful Industrial Safety & Quality bundle Technical specifications MI 3144 and MI 3143* High Current Impedance [Z], ΔR, R Selective Z line mΩ, Z loop mΩ Measuring range according to EN61557-3: 12.0 mΩ ... 19.99 Ω Measurement principle Voltage / Current measurement (synchronous sampling) Loop/Line Impedance Measuring range Zline Zloop Impedance Nominal frequency Nominal voltage range Test load parameter Test method 4-wire / Ipsc - Imax, Imin, Imax2p, Imin2p, Imax3p, Imin3p /R and XL values / Averaging option / Automatic range selection MI 3144 DC Sources & Line Resistance [R] R line mΩ...

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MI 3144 Euro Z 800V and MI 3143 Euro Z 440V guide EN-7

Most powerful Industrial Safety & Quality bundle Technical specifications MI 3144 ELR Test [I and t] ELR Current Injection Test and ELR Combination Time Test Residual operating current Measuring range Combination time Measuring range Nominal voltage range (P1 - P2) 40 ... 800 V 40 V Nominal voltage range 800 V Nominal frequency range (P1 - P2) 16,7 ... 400 Hz Nominal frequency range Current Waveform Alternating, Pulsating, DC Test current selectable 3 mA, 5 mA, 6 mA, 10 mA, 15 mA, 30 mA, 50 mA, 0,1 A, 0,15 A, 0,25 A, 0,3 A, 0,5 A Number of turns - up to 10   MI 3144 Current [I] Iron current clamps...

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MI 3144 Euro Z 800V and MI 3143 Euro Z 440V guide EN-8

Most powerful Industrial Safety & Quality bundle Standard set MI 3144 / MI 3143 ORDERING INFORMATION (MI 3144) Standard set (MI 3144) • Instrument MI 3144 Euro Z 800 V • Mains cable • RS232-PS/2 cable • Test lead 5 m, black, 2 pcs • Test lead 5 m, red, 2.5 mm2, 2 pcs • Test lead 50 m, red, 2.5 mm2* • Test lead 20 m, black • Test lead 50 m, green* • Large Kelvin test clip, 2 pcs • Crocodile clip, black, 2 pcs • Crocodile clip, red, 2 pcs • Crocodile clip, green • Test probe, black, 2 pcs • Test probe, red , 2 pcs • G clamp • Human body resistance probe • Test rod, 2 pcs • Step voltage plates,...

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MI 3144 Euro Z 800V and MI 3143 Euro Z 440V guide EN-9

Most powerful Industrial Safety & Quality bundle Optional accessories Test lead 5 m, black Jumbo case mount for A 1660 Test lead 20 m, black Large Kelvin test clip, • 2 pcs Professional current earth spike, 50 cm Large test crocodile, black Step voltage plates, 2 pcs Large test crocodile, red 1-phase flexible current clamp Test lead 20 m, green • Crocodile clip, black, 2 pcs 1-phase flecible current clamp 3000/300/30 A / 1 V Test lead on a cable reel, 50 m, red, 2.5 mm2, extendable Test lead on a cable reel, 50 m, black, extendable Test probe, black, 2 pcs Current clamp A 1281 extension cable,...

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MI 3144 Euro Z 800V and MI 3143 Euro Z 440V guide EN-10

Application Note - 1 (MI 3144 and MI 3143) Live Power Transformer High Precision 4-wire 300A Z Line / Loop Impedance Testing Power Electrical Installation's Automatic trip-out ability is the majority evaluation during maintenance process to protect power transformer in case of overloading, overheating and shorting. Heavy Industrial solution supports live testing without disconnection of the transformer from power network. Periodical inspections of Z line and Z loop impedances can show bad contacts on busbars, condition of power switches, contactors or fuse holders. However, it needs to be working...

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MI 3144 Euro Z 800V and MI 3143 Euro Z 440V guide EN-11

Application Note - 2 (MI 3144 and MI 3143*) Partial Voltage Drops and Partial Clamp Current’s Path* Resistances Industrial electrical installation components, fuse holders, cables, contacts, busbars and powerful switches are crucial for operability, automatic trip-out ability, and functional safety. Industrial solution supports live testing without power network disconnection. The maintenance procedure project can be designed in advance and all replacements and repairs can become predictable. Periodical inspections of Z line and Z loop impedances can show bad contacts on busbars, condition of...

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MI 3144 Euro Z 800V and MI 3143 Euro Z 440V guide EN-12

Application Note - 3 (MI 3144) Airports High Frequency Band 16 ... 420 Hz Installation Impedances testing Mobile Ground Power Supply or Central Supply Systems with generators, motors, converters, connection systems, sub-distribution units, cables, connectors and plugs need robust and reliable predictive maintenance. The rationality behind this is to provide safety and quality of electrical power supply and connected electrical circuits and subsystems for the aircraft in the flight preparation phase. Using our solution in parallel to existing test procedures with load banks allows us to provide...

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.