Prev: OICEW-3-1C
Next: OICEW-3-1E

OICEW-3-1D

Measure insulation resistance

Function: Electrical, electronic and control engineering at the operational level

Competence Knowledge, Understanding & Proficiency Task

Maintenance and repair of electrical and electronic equipment

B2.3 Detection of electric malfunction, location of faults and measures to prevent damage

Measure insulation resistance

Assessed in: EN-4231 Sea Term IV Engine

Condition

Aboard ship or in a workshop, given access to 3-phase electrical AC motor and controller, a Megger test meter, and other proper tools and safety equipment.

Behavior

Plan and use the Megger to measure and record the insulation resistance of the motor through connections in the controller, describing actions as they are being performed.

Standard

  1. The plan and layout of the job are correct, in proper sequence, and incorporate all safety considerations;
  2. Actions being executed are described correctly as they are being performed;
  3. The system is confirmed de-energized and Megger is used correctly in accordance with manufacturer’s instructions;
  4. The resistance value reported is corrected for temperature and within +/- 5% of other values taken contemporaneously;
  5. No safety violations are observed.