Substation Surroundings | Step & Touch Voltage Measurement | MI 3295 | Instructional

#electrical #grounding #testing
Step and touch voltage measurements in the vicinity (on a location of a future photovoltaic power station) of a substation.

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⏲️ TIMESTAMPS
00:00 Intro
00:35 Job Briefing
01:15 Prepare the measuring system
03:15 Connect the generator MI3295 SC to the E/G point using a G clamp
04:20 Connect the generator MI3295 SC to the remote H probe
05:40 Connecting to the H probe
06:50 Running the generator
07:20 Outdated Method vs New Method
07:57 Connecting to the ES probe
09:00 Measuring the GPR and trace for the S curve
10:00 Measuring ground potential process
10:31 Results of the GPR measurements
11:12 Presentation of the S-curve results
11:20 Preparation for testing Step & Touch
12:05 Split factor evaluation
14:27 Results of the split factor evaluation
14:55 Measuring the touch voltages
16:05 Adjusting the parameters
16:53 Proceeding with the measuring procedure
17:40 Animation - a connecting procedure
18:02 Step Voltages Measurement
18:32 Presentation of the results
19:41 Subscribe

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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.
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🎥 Presented by:
Janez Guzelj – Application and Technical Consulting director, Metrel

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Metrel
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