Nowadays, electricity has become essential for a household and we duel with electrical equipments every day s including Fans, Lights, and Air Conditioning etc. The electrical current in regular businesses and homes has enough power to cause death by electrocution. Even changing a light bulb without unplugging the lamp can be fatal because coming in contact with the live part of the socket. Therefore, necessary protection shall be applied in design to protect life and damage of property.
The “One-day Workshop on Electrical Protection System” organized by The Young engineers Section on 6th December 2011 was attended by 39 participants. The facilitator for the workshop was En. Dahari Bin Mat Siran, who has involved intensively in the Working Group and Technical Committee for the developing of MS IEC 60898, MS IEC 61008, MS IEC 61009 and MS IEC 61643. He also the Chairman of Association of Suppliers Against Fake Electrical Equipment (ASAFEE).
He commenced the course by highlighting some definition in protection and introducing the standard that applied. He then explains how overcurrent could be happened in one circuit which is overcurrent and fault current. After the explanation, he described the function and the principle of Miniature Circuit Breaker in details.
He continues the second section with Residual current devices and the wiring regulations. He describes the symbols, marking and the type of Residual Circuit Device (RCD). He also describe the principle and the application of the RCD including the discrimination between devices.
After the lunch, En. Dahari continues the workshop by explaining the problem of lightning and switching transients including the direct and indirect strike. He then thought the audient to solve the problem by applying and selecting the correct Surge Protective Device (SPD).
He concluded the workshop with introducing the European Installation Bus system as the solution for home and building system engineering.
Participants then engaged actively in the Question and Answer session. And the workshop end with the certificate presentation.
Prepared by Engr. Cheng Pay