DESIGNING AN ONC AND HNC ELECTRICAL POWER LAB

The electricity supplies required in an electrical power laboratory are related to the major items of equipment that will be installed. Taking as a guide the list of electrical laboratory experiments which is published by the I.E.E., the minimum equipment to cover the teaching of Electrical Technology to National Certificate students from S3 to A2 should include the following: three d.c. motors, two d.c. motors, four motor‐generator sets, a motor‐alternator set and a mercury‐arc rectifier. Further details of these machines are given in Figure 5. In addition, provision must be made for bench experiments involving transformers and other small apparatus.