Earth measurements
Training in measuring soil resistivity and resistance to earth taps on pylons.
- Formation level
- Intermediate
- Domain
- Maintenance Electricity transmission grid expertise
- Duration of training
- 14 hour(s)
- Reference
- MAINXR20
/ Informations
- Intern Profil
Employees in charge of measurements and studies in the control and command area.
- Required
Basic knowledge of electrical engineering.
- Needed stuff
PPE, PC and something to write with.
/ Content
Theory :
• Procedure for measuring soil resistivity and resistance of pylon earthing systems,
• Use of the measuring tool,
• Possible errors during a measurement and how to avoid them,
• Consistency checks to be carried out during measurements.
Practical exercises:
• Performing an earth resistance measurement on a pylon with the consistency checks provided for in the measurement guide,
• Performing a measurement.
In-class debriefing:
• Analysis of ground resistivity measurements,
• Critique and analysis of tower earthing resistance measurements.
/ Objective
- • Carry out soil resistivity measurements,
• Explain and apply the measurement procedure,
• Explain the consistency checks carried out during a soil resistivity measurement,
• List some possible sources of error during a soil resistivity measurement and describe possible ways of getting round them,
• Interpret the results of a soil resistivity measurement,
• Carry out reliable tower earth measurements for towers with or without guard cables,
• Explain and apply the measurement procedure,
• Explain the consistency checks carried out during a tower earth resistance measurement,
• List some possible sources of error when measuring the resistance of pylon earthing systems and describe possible ways of getting round them,
• Criticise the results of a tower earthing measurement.