COURSE OVERVIEW:

The operational reliability of Motor Control Centres (MCC) and Low Voltage (LV) Circuit Breakers is essential for preventing unplanned downtime and electrical accidents. This course provides a hands-on, technical deep dive into the diagnostic testing and precision maintenance required to keep these assets in peak condition. Participants will explore the mechanics of "Secondary Injection" and "Insulation Testing," focusing on the quantitative analysis of electrical assets.

The scope of this training addresses the physical maintenance of the power path, including busbar integrity, contact resistance, and lubrication of mechanical linkages. It covers the technical nuances of electronic trip unit calibration, focusing on the verification of "Time-Current Curves" to ensure that protection logic performs as designed during a fault. The curriculum provides a detailed focus on the diagnostic identification of incipient failures, such as high-resistance connections or degrading contactor coils.

Coverage includes the implementation of standardized testing procedures according to NETA and IEC benchmarks. Attendees will learn to utilize advanced testing equipment, interpret "Contact Wear" indicators, and execute "Secondary Control" verification. By combining electrical physics with practical site-based maintenance routines, the course equips professionals with the expertise required to extend the service life of their LV distribution assets through rigorous technical validation.

COURSE OBJECTIVES:

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

• Define the "Standardized Test Matrix" for MCCs and LV breakers.
• Perform "Insulation Resistance" (Megger) testing on busbars and feeders.
• Execute "Contact Resistance" (Ductor) tests on breaker power paths.
• Perform "Secondary Injection" testing to verify trip unit accuracy.
• Validate the "Time-Current Characteristic" (TCC) of an LV breaker.
• Inspect and maintain "Magnetic Contactors" and arc-suppression chutes.
• Utilize "Infrared Thermography" to audit MCC busbar integrity.
• Perform "Molded Case Circuit Breaker" (MCCB) verification tests.
• Execute mechanical "Travel and Timing" analysis for Air Circuit Breakers.
• Maintain the "Mechanical Interlocks" and racking mechanisms of the MCC.
• Interpret and document test results according to NETA standards.
• Troubleshoot "Fail to Trip" and "Nuisance Trip" scenarios based on data.

TARGET AUDIENCE:

This course is intended for Maintenance Electricians, Testing and Commissioning Engineers, and Facility Technicians.

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.