Motors, Fault Current Protection & Thermal Relays

Motors, Fault Current Protection & Thermal Relays

Master essential electric motor principles, including electromagnetism, rotation, and starting characteristics like inrush current. You will learn to identify fault current types – overload and short-circuit – and understand protective devices such as MCBs (with B, C, D tripping curves) and fuses. Gain a core understanding of thermal relays, exploring their operation, current range, and correct sizing and setting for applications including star-delta and single-phasing protection. Crucially, apply BS 7671 standards to motor control circuits, developing practical skills for safe testing, maintenance, and fault finding in UK industrial and commercial installations.