Tag: #polarizationindex
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EK Electrical Oct 2024 (Q11)
With reference to insulation testing of electrical equipment: (a) State the reasons for insulation testing and why it is carried out on a regular basis (2) (b) Describe the procedure for taking a set of insulation readings on an electric motor in-situ, stating the minimum acceptable readings (6) (c) Explain the term Polarisation Index (2)…
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EK Electrical Jul 2023 (Q11)
With reference to testing High Voltage equipment: (a) Explain why earthing down is considered essential (2) (b) State the operating voltage for an insulation resistance tester (megger) suitable for 6.6KV equipment (1) (c) Describe how an insulation resistance test is carried out on High Voltage equipment making reference to personnel safety (5) (d) Explain why…
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EK Electrical Oct 2021 (Q11)
With reference to insulation testing of electric equipments: (a) State the reasons for insulation testing and why it is carried out on regular basis (2) (b) Describe the procedure for taking a set of insulation readings on an electric motor in situ, stating the minimum acceptable readings (6) (c) Explain the term Polarisation Index. (2)…
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