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Testing Electrical Installations

overview

Basic safety in electrical testing including live tests & “dead” tests, direct & indirect electrical contacts, effects of electricity on humans, shock hazard curves & voltage limits;

Voltage and current tests (use of multi-meter and clamp meter);

Polarity test;

Continuity test;

Insulation resistance (IR) test;

Phase rotation test of a 3-phase system;

key facts

Duration in Month(s)

3 full days (1 day per week)

Location

Ebene Campus

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RCD tests including basics of an RCD functioning, nominal current & sensitivity, RCD trip curve, RCD functional test, basic RCD discrimination (selectivity), RCD ramp test, RCD tripping time test including sensitivity settings and interpretation of results;

Earth resistance;

Earth resistivity (theory only);

Earth loop impedance test including basics of a TT network, calculations of earth loop, calculation of fault currents, calculation of contact voltages, understanding importance of equipotential bonding, conducting ZE & ZS;

Prospective fault current (PFC) and short circuit (PSC) tests;

Overview of sections of BS 7671 concerning testing;

Reporting of test results and test sheets.

Target audience

  • The course is a mix of theory and practical suitable for:
  • Experienced electricians & supervisors;
  • Maintenance technicians;

Objective/ career prospect

  • Develop a sound mastery of fundamentals of testing electrical installations;
  • Acquire skills in conducting electrical tests and interpret results;
  • Ability to report test results.