Epc Contracts For Wind Energy Projects - South African Re Ipp Programme - Lessons Learned From Phases 1 And 2 (October 2012) Part 10

1.2.2 Electrical System Tests

Commissioning Tests shall be performed on all items of the Wind Farm electrical system, in accordance with the standards of a Reasonable and Prudent Operator, the standard procedures of the Contractor and the requirements of this Contract, and shall include (but not be limited to) the following:

1. Wind Turbine transformers:
2. 1. Check mechanical state and earth connections.
   2. Check satisfactory equipment labelling.
   3. Check tap selector switch in correct position.

1. Substation transformers:
2. 1. Ratio measurement on all tap settings.
   2. Winding resistance measurement on highest, lowest and nominal tap settings.
   3. Insulation resistance between all windings, and each winding to earth;