8) This describes the essential skills and knowledge and their level, required for this unit. Evidence must show that knowledge has been acquired of safe working practices and interpretation and analysis of single operation protection devices. All knowledge and skills detailed in this unit should be contextualised to current industry practices and technologies. KS01-PO342B Interpret and analyse single operation protection devices Evidence shall show an understanding of how to interpret and analyse the operation of single operation devices to an extent indicated by the following aspects: T1 Introduction to protection schemes Functions of electrical protection schemes Features of electrical protection schemes Types of electrical faults Functions of mechanical protection schemes Features of mechanical protection schemes Types of mechanical faults Alarms and flags raised by protection devices T2 Alternating Current (AC) motors Application of motors in electricity generating plants Three-phase motors Starter operations and applications Single-phase motor principles Construction of single-phase motors Synchronous motors Fault testing T3 Electrical protection devices Fuses Thermal overload devices Over-temperature devices Over-current devices LV circuit breakers Over and under-voltage relays Re-setting or restoring electrical protection T4 Mechanical protection devices Mechanical interlocks Flow switches Suction valve failures Re-setting or restoring mechanical protection T5 Fault finding theory Linear approach (logical step-by-step sequential elimination of source of fault) Half-split rule (progressive isolation of the faulty system in halves until the fault is identified). Sensory detection (using senses of sight, sound, and smell to recognise faults). Continuity testing |