COURSE OVERVIEW:

Fuses remain one of the most reliable and cost-effective methods of overcurrent protection in modern electrical systems, provided they are correctly selected and applied. This course provides a technical deep dive into the physics of fuse operation, covering everything from Low Voltage (LV) miniature fuses to High Voltage (MV) current limiting units. Participants will explore the internal mechanics of fuse links and the critical role of sand filling and element geometry in quenching high-energy arcs.

The scope of this training addresses the selection criteria for fuses in diverse applications, including motor protection, transformer safeguarding, and semiconductor circuits. It covers the technical nuances of Time-Current Characteristics (TCC), values, and the importance of matching the fuse's breaking capacity to the system's prospective fault current. The curriculum provides a detailed focus on the differences between "Expulsion" and "Current Limiting" fuses, as well as the specialized requirements for protecting modern power electronics.

Coverage includes the implementation of coordination strategies between fuses and other protective devices, such as circuit breakers and relays. Attendees will learn to interpret manufacturer data sheets to avoid common errors like "nuisance blowing" or inadequate protection during transient events. By combining theoretical material science with practical protection engineering, the course equips professionals with the expertise required to design and maintain fuse-based protection schemes that ensure maximum safety and reliability.

COURSE OBJECTIVES:

After completion of this course, the participants will be able to:

• Explain the physical principles of fuse operation and arc quenching.
• Differentiate between LV and MV fuse technologies and standards.
• Interpret Time-Current Characteristic (TCC) curves accurately.
• Select fuses based on continuous current, voltage, and breaking capacity.
• Apply I2t values to protect sensitive semiconductor devices.
• Coordinate fuses with upstream and downstream circuit breakers.
• Select appropriate fuses for motor starting and transformer protection.
• Identify the causes of premature fuse failure and aging.
• Determine the impact of ambient temperature on fuse performance.
• Utilize specialized fuses for solar PV and battery storage systems.
• Execute safe fuse replacement procedures in energized systems.
• Ensure compliance with IEC 60269 and other international standards.

TARGET AUDIENCE:

This course is intended for Maintenance Electricians, Protection Technicians, Design Engineers, and Facility Managers responsible for electrical asset protection.

TRAINING COURSE METHODOLOGY:

A highly interactive combination of lectures, discussion sessions, and case studies will be employed to maximize the transfer of information, knowledge, and experience. The course will be intensive, practical, and highly interactive. The sessions will start by raising the most relevant questions and motivating everybody to find the right answers. The attendants will also be encouraged to raise more of their questions and to share in developing the right answers using their analysis and experience. There will also be some indoor experiential activities to enhance the learning experience. Course material will be provided in PowerPoint, with necessary animations, learning videos, and general discussions.

The course participants shall be evaluated before, during, and at the end of the course.

COURSE CERTIFICATE:

National Consultant Centre for Training LLC (NCC) will issue an Attendance Certificate to all participants completing a minimum of 80% of the total attendance time requirement.