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Elements and Performance Criteria

  1. Prepare to design switchboards.
  2. Develop installation design.
  3. Obtain approval for installation design.

Required Skills

This describes the essential skills and knowledge and their level required for this unit

Evidence shall show that knowledge has been acquired of safe working practices and designing switchboards rated for high fault levels

All knowledge and skills detailed in this unit should be contextualised to current industry practices and technologies

KSEGA Switchboard design

Evidence shall show an understanding of the design of low voltage switchboards rated for high fault currents to an extent indicated by the following aspects

T Trade calculations encompassing

mathematical techniques

relevant calculations

linear measurement areas volumes ratios

T Engineering mechanics encompassing

base physical quantities

concepts principles SI units their applications in

engineering calculations in relation to physical quantities and

associated formulae

mass velocity acceleration force weight density angles

energyworkpower

momentstorque

centre of gravity

mechanical advantage

levers

pulley blocks

efficiency

friction

vectors

resolution of forces

forces in strung conductors

forces on poles and towers

determination of sag

pressurestress

elementary fluid mechanics

T Engineering materials encompassing

classification

ferrous and nonferrous metals

steels alloys

properties

tensile strength

temperature and expansion in metals

stress and strain

ductility

applications

corrosion

galvanic corrosion

hardwoods and soft woods

T Fault current calculations encompassing

Calculation of fault currents

CalculationDetermination of positive negative and zero sequence impedances

Determination of fault current breaking and letthrough energy capacities of protection devices

The influence of faultarc impedances

Impedances operative for phasetophase and phasetoearth faults

Calculation of fault currents for phasetophase and phasetoearth faults

Approximation calculations by selecting the components with the major impedance

Evidence Required

The evidence guide provides advice on assessment and must be read in conjunction with the Performance Criteria Required Skills and Knowledge the Range Statement and the Assessment Guidelines for this Training Package

The Evidence Guide forms an integral part of this unit It must be used in conjunction with all parts of this unit and performed in accordance with the Assessment Guidelines of this Training Package

Overview of Assessment

Longitudinal competency development approaches to assessment such as Profiling require data to be reliably gathered in a form that can be consistently interpreted over time This approach is best utilised in Apprenticeship programs and reduces assessment intervention It is the Industrys preferred model for apprenticeships However where summative or final assessment is used it is to include the application of the competency in the normal work environment or at a minimum the application of the competency in a realistically simulated work environment It is recognised that in some circumstances assessment in part or full can occur outside the workplace However it must be in accordance with industry and regulatory policy

Methods chosen for a particular assessment will be influenced by various factors These include the extent of the assessment the most effective locations for the assessment activities to take place access to physical resources additional safety measures that may be required and the critical nature of the competencies being assessed

The critical safety nature of working with electricity electrical equipment gas or any other hazardous substancematerial carries risk in deeming a person competent Sources of evidence need to be rich in nature to minimise error in judgment

Activities associated with normal every day work have a bearing on the decision as to how much and how detailed the data gathered will contribute to its richness Some skills are more critical to safety and operational requirements while the same skills may be more or less frequently practised These points are raised for the assessors to consider when choosing an assessment method and developing assessment instruments Sample assessment instruments are included for Assessors in the Assessment Guidelines of this Training Package

Critical aspects of evidence required to demonstrate competency in this unit

Before the critical aspects of evidence are considered all prerequisites shall be met

Evidence for competence in this unit shall be considered holistically Each element and associated performance criteria shall be demonstrated on at least two occasions in accordance with the Assessment Guidelines UEE Evidence shall also comprise

A representative body of work performance demonstrated within the timeframes typically expected of the discipline work function and industrial environment In particular this shall incorporate evidence that shows a candidate is able to

Implement Occupational Health and Safety workplace procedures and practices including the use of risk control measures as specified in the performance criteria and range statement

Apply sustainable energy principles and practices as specified in the performance criteria and range statement

Demonstrate an understanding of the essential knowledge and associated skills as described in this unit It may be required by some jurisdictions that RTOs provide a percentile graded result for the purpose of regulatory or licensing requirements

Demonstrate an appropriate level of skills enabling employment

Conduct work observing the relevant Anti Discrimination legislation regulations polices and workplace procedures

Demonstrated consistent performance across a representative range of contexts from the prescribed items below

Design switchboards rated for high fault levels as described in and including

A Developing outlines of alternative designs

B Developing the design within the safety and functional requirements and budget limitations

C Documenting and presenting design effectively

D Successfully negotiating design alteration requests

E Obtaining approval for final design

F Dealing with unplanned events by drawing on essential knowledge and skills to provide appropriate solutions incorporated in the holistic assessment with the above listed items

Context of and specific resources for assessment

This unit should be assessed as it relates to normal work practice using procedures information and resources typical of a workplace This should include

OHS policy and work procedures and instructions

Suitable work environment facilities equipment and materials to undertake actual work as prescribed by this unit

These should be part of the formal learningassessment environment

Note

Where simulation is considered a suitable strategy for assessment conditions must be authentic and as far as possible reproduce and replicate the workplace and be consistent with the approved industry simulation policy

The resources used for assessment should reflect current industry practices in relation to designing switchboards rated for high fault levels

Method of assessment

This unit shall be assessed by methods given in Volume Part Assessment Guidelines

Note

Competent performance with inherent safe working practices is expected in the industry to which this unit applies This requires assessment in a structured environment which is primarily intended for learningassessment and incorporates all necessary equipment and facilities for learners to develop and demonstrate the essential knowledge and skills described in this unit

Concurrent assessment and relationship with other units

For optimisation of training and assessment effort competency development in this unit may be arranged concurrently with unit

UEENEEDA

UEENEED104A

Use engineering applications software on personal computers


Range Statement

10) This relates to the unit as a whole providing the range of contexts and conditions to which the performance criteria apply. It allows for different work environments and situations that will affect performance.

This unit shall be demonstrated in relation to designing switchboards rated for fault levels in excess of 20 kA. The switchboard shall comprise control for essential and general supply, metering, sub-main controls, local final sub-circuit distribution board and fault monitoring.

Generic terms used throughout this Vocational Standard shall be regarded as part of the Range Statement in which competency is demonstrated. The definition of these and other terms that apply are given in Volume 2, Part 2.1.