Grounding of Pylons | Electrical Energetic Systems Earthing | MI 3295, MI 3290 | Instructional (UK)

Описание: #electrical #grounding #testing
Comprehensive analysis of earthing and grounding parameters using the MI 3290 Earth Analyser and MI 3295 Step Contact Voltage Measuring System.

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⏲️ TIMESTAMPS
00:00 Intro
00:25 Used Testers
01:08 Prepare the instrument for testing
01:40 Evaluate worst-case situation
01:57 Measure Touch/Contact Voltages
02:25 Measure STEP Voltages
02:59 Compare Methods
03:37 Test several pylons in parallel
04:03 Subscribe

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🌐 Visit Metrel Homepage for more information on:
MI 3295 https://www.metrel.si/en/shop/HVI/ear...
MI 3290 https://www.metrel.si/en/shop/HVI/ear...
👁️ View the Datasheet for:
MI 3295 https://www.metrel.si/assets/Metrel/P...
MI 3290 https://www.metrel.si/assets/Metrel/P...
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https://www.metrel.si/en/registration/
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🎓 Academy Metrel is a perfect way to refresh your knowledge, participate in a training seminar using Metrel instruments and prepare for electrical installation exams.
https://www.metrel.si/en/content/supp...

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🎥 Presented by:
Pavel Prelog – Product manager

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Metrel
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
Possibility of performing different 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 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
Step voltage
Contact voltage
Specific earth resistance
Earth resistance
Potential
Leakage currentAccurate: high accuracy of the measurements due to a high current of up to 50 A and effective suppression of noise
Noise immunity: excellent immunity even against changing earth currents
Autonomous Step Voltage meter: no need for long potential leads; a few meters can be used simultaneously
Safe: high safety due to low output voltage (55 V)
Low weight: the weight of the Station is 29.5 kg only
Memory: up to 1000 test results can be saved into the 3-level internal memory of the system
PC SW Metrel ES Manager or HVLink PRO included in the standard set enables downloading and analysis of results and printing of test reports
IEC/EN 61557-5
IEC 62305
HD 637 S1
IEEE 81-2012
IEEE 367-2012
RAT 2008
EN 61557-5
EN 50522:2010
IEEE 80–2000
IEEE 81–2012
IEEE 142
IEEE 367–2012
EN 61326
EN 61010-1
EN 61010-2-030
EN 61010-2-032
EN 61010-031