Metrel MI 3290 GF Ground Earth Tester
MI 3290 Earth Analyser is a portable, battery or mains powered test instrument with excellent IP protection (IP 54 open case), intended for measurement of earth resistance, specific earth resistance and earth potential of various energetic and non-energetic objects. The user can choose between different methods from classic 3 wire earth resistance measurement up to one or four clamp method for measurement of pylons. He has a choice of measurement methods with different frequency methods: single frequency or frequency sweep from 55 Hz to 15 kHz, HF method with 25 kHz and pulse method simulating the lightning strike. High electrical noise immunity makes this instrument best suited for industrial environment. Instrument is available in multiple sets which are a combination of different accessories and measurement functions.
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Description
Metrel MI 3290 GF Ground Earth Tester
MI 3290 GF Earth Ground Tester is a portable, battery or mains powered test instrument with excellent IP protection (IP 54 open case), intended for measurement of earth resistance, specific earth resistance and earth potential of various energetic and non-energetic objects. The user can choose between different methods from classic 3 wire earth resistance measurement up to one or four clamp method for measurement of pylons. He has a choice of measurement methods with different frequency methods: single frequency or frequency sweep from 55 Hz to 15 kHz, HF method with 25 kHz and pulse method simulating the lightning strike. High electrical noise immunity makes this instrument best suited for industrial environment. Instrument is available in multiple sets which are a combination of different accessories and measurement functions.
Standards applied
Earthing and lightning protection
- LPSinsp Competences: Lightning Protection of Buildings Inspection
- LPSc Competences: Lightning Protection of Buildings for Contractors and Maintainers
- IEC 62305 Protection against lightning – series
Earthing and grounding
- EES Competences: Electrical Energetic Systems Earthing and Grounding Safety
- IEEE Guide for Safety in AC Substation Grounding
- IEEE 81-2012 IEEE Guide for Measuring Earth Resistivity, Ground Impedance, and Earth Surface Potentials of a Grounding System
- IEEE 142 Recommended Practice for Grounding of Industrial and Commercial Power Systems
- IEEE 367-2012 – IEEE Recommended Practice for Determining the Electric Power Station Ground Potential Rise and Induced Voltage from a Power Fault
Properties
Measuring functions
- Earth Resistance 2,3,4 -pole;
- Selective Earth Resist (1 x clamp);
- Earth Resistance (2 x iron clamps);
- Specific Earth Resistance (Wenner and Schlumberger method);
- HF-Earth Resistance (25 kHz, acc. to IEEE_Std 81);
- Earth Resistance of mono pylons with 10 m flex clamp;
- Earth Resistance of multi–leg pylons with up to four flex clamps;
- Current measurement (Iron, flex clamps);
- Low Ohm measurement 7 mA and 200 mA;
- Earth Potential;
- Step and contact measurements;
- Impulse Earth measurement 10/350 µs.
Key features
- Possibility of performing all types of earth measurements with a single instrument.
- Analysis of earth impedance as a function of the frequency due to a wide measurement frequency band (55 Hz … 15 kHz).
- Earth measurements on pylons with protective earth cable connected.
- Measurement on mono towers and 4-leg tower.
- A wide variety of measuring clamps: from iron clamps to flex clamps with 10 m length.
- HF-Earth resistance measurement (acc. to IEEE_Std 81).
- Sweep mode Z(f) on screen.
- High resolution colour touch screen, 4.3” TFT.
- Floating Mains (universal 90 … 260 V AC) or battery powered (built in fast charger).
- High degree of protection: IP 65 case closed, IP 54 case open.
- Checkbox – different self-check methods.
- DC resistance measurements.
- Impulse impendance measurement for simulating the lightning strike.
- Support for single or automated measurements.
- PC SW for measurement pre and post processing: preparation of the test structure, result download, tree-view, table view and graphical view, storing and printing.
Technical data
Station
- Dimensions (w x h x l): 360 X 160 X 330 mm
- Weight (with batteries, without accessories): 6 kg
Meter
- Dimensions (w x h x l): 230 X 103 X 115 mm
- Weight (with batteries, without accessories): 1.3 kg
Applications
Low voltage earthing and lightning protection
- Earthing measurement with fall of potential method
Hospital earthing and lightning protection
- Hospital earthing measurement with fall of potential method
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Laboratory Calibration
Micro Precision operates 36 laboratories globally providing reliable localized support
- Certified metrologists staffing laboratories in North America, Central America, South America, Europe, Asia, and the Middle East
- Comprehensive scopes of accreditation to meet a broad range of customer needs
- Expedited calibration services available
- Pickup and delivery services available
- Environmentally controlled facilities to ensure high quality and accurate calibrations and measurements.
Laboratory Calibration
Micro Precision operates 36 laboratories globally providing reliable localized support
- Certified metrologists staffing laboratories in North America, Central America, South America, Europe, Asia, and the Middle East
- Comprehensive scopes of accreditation to meet a broad range of customer needs
- Expedited calibration services available
- Pickup and delivery services available
- Environmentally controlled facilities to ensure high quality and accurate calibrations and measurements.
Quality Certified Test Equipment Repair Services
When a piece of equipment fails you have the option to repair or replace that item. Oftentimes repair is an economical and efficient solution. Micro Precision’s repair offering provides advantages to our customers:
- Cost effective; often less than OEM
- Efficient; often much better turn-time than the OEM
- Flexibility; willingness to work with customers to meet their needs
- Warranted repairs
- Ability to service many obsolete instruments
Quality Certified Test Equipment Repair Services
When a piece of equipment fails you have the option to repair or replace that item. Oftentimes repair is an economical and efficient solution. Micro Precision’s repair offering provides advantages to our customers:
- Cost effective; often less than OEM
- Efficient; often much better turn-time than the OEM
- Flexibility; willingness to work with customers to meet their needs
- Warranted repairs
- Ability to service many obsolete instruments
Cost Effective Test Equipment Options
From the leasing of specialized electronic equipment for a specific task, to the purchase of physical and dimensional tools, we offer leasing services as well as used test equipment sales. We also locate hard-to-find electronics, and provide flexible options to meet ever-changing equipment needs.
Cost Effective Test Equipment Options
From the leasing of specialized electronic equipment for a specific task, to the purchase of physical and dimensional tools, we offer leasing services as well as used test equipment sales. We also locate hard-to-find electronics, and provide flexible options to meet ever-changing equipment needs.
Our Capabilities
Micro Precision can perform instrument calibration services on equipment from variety of applications for specific industries and lines of business. If you have a calibration need that is not listed in this area, please contact us.
Electrical
Micro Precision accredited electrical calibration lab services with multimeter, multifunction calibrator, oscilloscope, and power supply capabilities.
Optical
Micro Precision accredited optical, light, and fiber optic calibration lab services.
Thermodynamics & Chemical
Micro Precision accredited thermodynamic & chemical calibration lab services with temperature, humidity, life science, and pharma capabilities.
RF - Microwave
Micro Precision accredited RF & microwave calibration lab services.
Mechanical & Dimensional
Micro Precision accredited mechanical and dimensional calibration lab services with pressure, torque, force, flow, velocity, and aircraft jack load capabilities.
Laboratory Standards
Calibration laboratory standards are critical for your organization’s most accurate measurements.
Semiconductor Calibration
Micro Precision utilizes state-of-the-art technology to analyze semiconductor wafer thickness and step height.