This course comply to the requirements of GN 404 of 2013 – ‘Scheme for the Registration of Training Courses Leading to the Certification of Renewable Energy Systems Installers and Providers of Energy Services’.
The unit will cover the three-phase Solar PV systems including the following:
Construction and operation of a three phase generator; Observe the behavior of three phase supply on three phase loads; Discuss the advantages of operating at a low power factor; operation of stand-alone and grid-connected inverters; special requirements for three-phase inverters; inverter safety features (stand-alone, island and grid-connected); Awareness on importance of mis-match losses due to use of different modules of varying outputs or make.
At the end of the unit, candidates will have sufficient knowledge and practical experience to install three phases PV systems.
This is a 10 hr guided learning course. Students need to invest further hours which will include private study and home assignments.
Lessons are held as indicated on the prospectus and website.
Learning Outcome 1: Explain the operation of a three phase generator
At the end of this outcome, learners shall be able to recognize the different parts of a generation, transmission and distribution electrical power system, as well as to identify the construction of an ac generator and understand its basic operation.
1.2 Principle of a generator
1.3 Construction and principle of operation
1.4 Revolving (rotating) field type generators
1.5 Single phase generators
1.6 Three phase generator
Generation, transmission and distribution of Electrical energy
2.4 Protection on high voltage systems
Single and three phase supplies
3.2 Substation delta/star transformer
3.3 Line and phase voltages
3.4 Deriving a single phase out of a three phase system
Sequence of service supply
4.2 Sequence of service supply
Learning Outcome 2. Interpret and use mathematical operations to describe the behavior of three phase supply on three phase loads
This outcome looks at different three phase load configuration. With the use of basic calculation, frequently used at the place of work, learners shall appreciate the behavior of such loads.
Three phase loads
5.2 Types of connections
5.3 Star connection
5.4 Delta connection
Power in three phase systems
6.2 Different types of loads
6.3 Apparent, real and reactive power
6.4 Power factor CosΦ
6.5 Power calculation in single phase systems
6.6 Power calculation in three phase systems
Learning Outcome 3. Explain the principles of operating at a low power factor
This outcome helps the learner to appreciate the use of power at a more economical value. It also briefly indicates the requirements for parallel operation of more than one ac generation source.
Measurement of power
7.2 The wattmeter
7.3 Wattmeter connection
7.4 One wattmeter method
7.5 Two wattmeter method
7.6 Three wattmeter method
Power factor and its effects
8.2 What is the power factor?
8.3 What are the effects of power factor?
8.4 In what way does power factor affect the electrical system?
8.5 What can be done to improve power factor?
Parallel running of three phase sources of energy
9.3 Conditions for synchronisation (Voltage generator to infinite busbar.
Learning Outcome 4. Perform a three phase installation of a PV System
• Visit to observe a three phase installation of a PV System
• Practical hands on Session
The following are the suggested pre-requisites and/or entry requirements needed:
Completed successfully the MCAST Renewable Energy Systems and PV Installers – Single Phase course.
Hold Authorisation B or hold an Electrical Engineering Degree or hold a Mechanical Engineering Degree with Electrical Installation 2 – Leading to Authorisation B
Course participants may be awarded either an MCAST Certificate of Attendance or an MCAST Certificate of Achievement.
MCAST Certificate of Attendance
MCAST Certificate of Achievement
If the student intends to obtain a Certificate of Achievement, she/he is required to sit for an assessment/s. Assessment/s may take various forms such as a home assignment, class assignment, practical test and time constrained test. However, the assessment/s is not compulsory and an applicant may choose not to sit for it.
There are no additional costs or special materials/equipment to bring,