Please enable JavaScript.
Coggle requires JavaScript to display documents.
319 Maintenance of electrical equipment and systems (1 Understand how…
319 Maintenance of electrical equipment and
systems
1 Understand how electrical systems function
2 Understand electrical system information electrical system drawings
3 Understand how to maintain electrical systems
!EXAM!
3.1 describe legislation relating to electrical equipment and systems
legislation: Electricity at Work Regulations, IEE Wiring Regulations.
3.2 describe resources required for maintenance activities
resources: tools, equipment, materials, information, documentation.
3.3 explain control measures required to minimise health and safety risks
control measures: Risk assessment, Method statements, PPE, Permit to work.
3.4 describe how to dismantle electrical systems for maintenance activities
dismantle: Safe isolation, releasing stored energy, supporting components, removing components, laying out components, proof marking removed components.
3.5 describe signs of electrical component non-compliance
non-compliance: Erosion, wear, corrosion, discolouration, damage (mechanical/heat), contamination, failure.
3.6 describe how to complete electrical system maintenance activities
maintenance: Inspection, tolerance/performance checks, corrosion checks, mechanical damage repair, termination/fastener security (torque setting), lubrication,cleaning, component replacement, base overhaul.
3.7 describe how to assemble electrical systems following maintenance activities
assemble: Sequence of assembly, positioning components, setting, aligning and adjusting components, securing components.
3.8 describe re-commissioning operations to bring system on-line.
re-commissioning: Visual inspection, electrical testing, re-energising procedures (sequencing), functional tests.
electrical system drawings: Circuit, wiring, layout
data: Manufacturers data, catalogues, Internet, component data sheets (PA)
1.1 explain the function of electrical system components
components: a.c. motors (induction and synchronous), motor construction (cylindrical and salient pole), single-phase motors; d.c. motors (series, shunt and compound); power factor correction equipment, circuit protection devices, isolators, switches, switchgear.
1.2 explain how components work together in an electrical system
electrical system: Power and control systems, starting methods (direct online, star delta, capacitor start, invertor drive phase induction start, capacitor start, capacitor start & run, motor starters
1.3 explain methods used to protect electrical systems
methods: Fuses, circuit breakers, isolators, overloads, undervoltage, earthing, residual current devices, no volt releases, insulation, enclosures, containment systems
1.4 explain how electrical system power requirements determine supplies.
supplies: Cable types (steel wire armoured (SWA) and Mineral Insulated Copper cable (MICC)), cable size, containment systems, (Busbar systems, underfloor ducting, rising
mains).