Advanced Diploma in Electrical Design Engineering

Examine the load list, classify as continuous, intermittent, or standby, and compute consumed load. Use motor rating, efficiency, and power factor to determine plant running, peak loads, and transformer sizing.

Learn how to size electrical cables for load requirements and voltage drop calculation, covering ampacity, short-circuit criteria, derating factors, and IEC standards.

Explore a stepwise 22 kV cable sizing calculation to meet short-circuit and full-load ampacity, applying derating factors to justify a 70 mm² aluminium conductor.

Demonstrates high-voltage cable sizing calculations using voltage drop, derating factors, and starting and running power factors to select cable size for motor and feeder circuits, guided by standards and tools.

Explore underground cable installation and wiring methods, including conduit routing, depth and spacing, crossings over drains and roads, markers, grounding, and future expansion planning.

Explore joining cables, including insulation considerations, approved joining methods, and installation guidelines to ensure safe, reliable splices and compliant cable routes.

Explore the power triangle, with active power (kilowatts), reactive power, and apparent power. Learn how improving power factor, via capacitors, reduces current and lowers utility costs and losses.

Improve power factor by local capacitive units near loads or central capacitor banks, and choose from polypropylene, mixed dielectric, or metallized polypropylene capacitors, considering harmonics and voltage rise.

the lecture identifies key reasons for capacitor failure, including insulation breakdown and moisture-induced voids. it reviews capacitor bank configurations for three-phase systems and automatic installation options to enhance reliability.

Examine low voltage capacitor construction, featuring self-healing elements and vermiculite insulation, and apply a motor-data based capacitive sizing metaphor for safe capacity.

Analyze capacity sizing for electrical systems, assess harmonic distortion from nonlinear devices, and apply capacitor bank sizing with detuned reactors and filters to prevent resonance and capacitor failure.

Calculate capacitor sizing by analyzing inductive loads, magnetizing current, and reactive power to achieve the target power factor with a suitable capacitor bank.

Explore the sizing of emergency diesel generator sets, covering essential components, fuel and cooling systems, control panels, and standards, with emphasis on emergency load lists and vendor data.

Examine the utility consumption and load list for a dg set to identify voltages, frequencies, and running versus standstill currents. Assess starting limits and efficiency to determine emergency load capacity.

Explore ga drawings for a dg set, covering mounting, cooling system, exhaust piping, clearance requirements, and open maintenance areas for installation and upkeep.

Learn to size a transformer using an Excel-based manual calculation by summing continuous, intermittent, and standby loads with duty factors, and verify voltage regulation during largest motor inrush within 15%.

Size the uninterruptible power supply for emergency loading of critical process elements, applying european sizing and future margin, for systems like CCTV and PBX, with standard single or parallel configurations.

Explore battery sizing for stationary and dc loads, comparing lead-acid and nickel cadmium options, applying charging, temperature correction factors, and design margins to determine the number of cells.

Size a 24-volt dc system by applying nominal and minimum voltages, voltage variation, aging, and design margins to determine required cells and capacity.

Learn how to size and select industrial motors through codes and standards, continuous-duty requirements, enclosures, insulation, cooling, and safe, reliable design practices.

Explore motor design calculation by linking power, torque, and speed, selecting motor frame and rating, and sizing for constant power, constant torque, and speed conditions with efficiency and start-up considerations.