EES: Electrical Energetic Systems Earthing and Grounding Safety (ADK: D-5/922)

The acquired knowledge is focused on assuring of safety conditions and protection against electrical shock by evaluating of automatic tripout ability and tripout time. Additional factors are used in calculations to protect transformers and built-in equipment in case of overheating. Several procedures and measuring methods are explained for maintenance in safe manner when work energized. The candidate will gain knowledge of evaluated parameters, the suggested limits from the standard and the examples of PASS / FAIL results. The responsibility of the candidate is the correct reports and markings and the appropriate acting and informing.

Areas of Application

  • Requirements for initial and periodic verification of earthing / grounding systems around electrical energetic installations & systems exceeding 1 kV.
  • Grounding, potential rising, voltage funnels around power transformers, generators, substations, utilities.
  • Grounding and earthing of distribution and transmission systems, pylons & towers.
  • Measuring & analyzing earthing and grounding by standardized methods according to IEEE 81, EN 50522, IEC 62305, IEC / HD 60364-6.

Regulation, Literature and Standards

  • IEEE 81-2012 – IEEE Guide for measuring earth resistivity, ground impedance, and earth surface potentials of a grounding system
  • EN 50522 – Earthing of power installations exceeding 1 kV a.c.
  • IEC 62305 – Protection against lightning
  • IEC / HD 60364-6 Low voltage electrical installation safety: Part 6 Verification.
  • Handbook with exercises ˝Power Network Application Trainer with Exercises˝, Academy@Metrel
  • Handbook with exercises ˝Low Voltage Electrical Installation Safety˝, Academy@Metrel

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Step and Touch, Fall of Potential, Ground Integrity - Metrel MI 3295, MI 3290, MI 3155 Eurotest XD and MI 3144 Euro Z

Earthing and Grounding measuring methods to refresh the theoretical and practical knowledge.

Refresh your knowledge and prepare yourself for CPD competence certification.

Several procedures and measuring methods are explained for maintenance in safe manner when work energized.

by Metrel Academy

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Training Schedule

Safety First

Health & Safety at Work with Electricity

  • Use of personal protection equipment
  • Use of electrical equipment and barriers
  • Accessible life parts and limits of approach

Employer / Employee Responsibilities

  • Lockout / Tagout
  • Five safety steps
  • Work permit when energized

Job Briefing and Planning

  • Identify hazards
  • Ask
  • Check
  • Know
  • Think
  • Likelihood of occurrence
  • Prepare for emergency

Practical Knowledge with Measuring Methods and Procedures

Inspections, Tests & Measurements

  • Visual inspection
  • Fault conditions and worst case situations for permissible touch voltage evaluation:
    • Line to ground case situations on LV or MV side
    • Lightning and switching maneuver situations
    • Automatic tripout adjustment and short-circuit currents
  • Continuity and equalization testing
  • Earthing and grounding measuring methods:
    • Earth resistance measurement 2/3/4 wire test method
    • Voltage funel analzsing
    • Ground potential rising measurement
    • Step & contact voltage measurement
    • Resistivity and specific earth resistance by Wenner / Schlumberger method
    • Two clamps method for conductive loops measurement
    • One clamp method with hi current for ground integrity
    • dR 300A hi current for ground integrity and lightning system testing of power installations above 1 kV
    • One clamp / four clamps testing of separate earthings of pylons & metal constructions & multileg groundings
    • Sweep frequency and hi frequency 15 kHz / 25 kHz measuring methods
    • Lightning strike pulse 10/350 simulation testing

Evaluation of Results

  • Find the PASS / FAIL / LIMIT values
  • Compare results to the limit
  • Bring the decision

Acts and Inform Appropriately

  • Report the results
  • Mark the equipment accordingly
  • Enabling of further use when PASS
  • Rejecting the usage when FAIL
  • Inform and transfer the responsibility

Troubleshooting and Maintenance

  • Work close to energized objects
  • Hi voltage presence checking
  • Leakage current
  • Earth bonding and main protection evaluation
  • Find faults and potential dangerous

Certification of Professional Qualification

Based on the knowledge gained in this training you will be ready for the certification of a professional qualification. After passing the exam you can obtain a certificate of competence for electrical safety of EES – Electrical Energetic Systems Earthing and Grounding Safety.

The certification process – registration, examination, certification, registering and maintaining the register, notifications – are available through our testing centres worldwide, that will help and guide you through the process. Our trainers and specialists will support you with theoretical and practical experiences.

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