Metrel MI 3290 GP Ground Earth Tester
MI 3290 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.
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描述
Metrel MI 3290 GP Ground Earth Tester
MI 3290 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 color 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 impedance 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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- 提供快速校准服务
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- 环境受控设施可确保高质量和准确的校准和测量。
实验室校准
Micro Precision 在全球运营 36 个实验室,提供可靠的本地化支持
- 认证计量学家在北美、中美洲、南美洲、欧洲、亚洲和中东的实验室配备人员
- 全面的认证范围可满足广泛的客户需求
- 提供快速校准服务
- 提供接送服务
- 环境受控设施可确保高质量和准确的校准和测量。
质量认证的测试设备维修服务
当一件设备发生故障时,您可以选择修理或更换该物品。通常,维修是一种经济有效的解决方案。 Micro Precision 的维修服务为我们的客户提供以下优势:
- 性价比高;通常低于 OEM
- 高效;周转时间通常比 OEM 好得多
- 灵活性;愿意与客户合作以满足他们的需求
- 保修维修
- 能够维修许多过时的仪器
质量认证的测试设备维修服务
当一件设备发生故障时,您可以选择修理或更换该物品。通常,维修是一种经济有效的解决方案。 Micro Precision 的维修服务为我们的客户提供以下优势:
- 性价比高;通常低于 OEM
- 高效;周转时间通常比 OEM 好得多
- 灵活性;愿意与客户合作以满足他们的需求
- 保修维修
- 能够维修许多过时的仪器
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具有成本效益的测试设备选项
从为特定任务租赁专业电子设备到购买物理和尺寸工具,我们提供租赁服务以及二手测试设备销售。我们还定位难以找到的电子产品,并提供灵活的选择以满足不断变化的设备需求。