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Title / Demonstrate knowledge of power cable construction
Level / 3 / Credits / 2
Purpose / People credited with this unit standard are able to demonstrate knowledge of power cable construction.
Classification / Electricity Supply > Electricity Supply - Distribution Networks
Available grade / Achieved
Explanatory notes
1 This unit standard is intended for, but not restricted to, workplace assessment. The range statements within the unit standard can be applied according to enterprise specific equipment, procedures and processes.
2 Performance and work practices in relation to the outcomes and evidence requirements must comply with all current legislation, especially the ElectricityAct1992 and any subsequent amendments, and any regulations, codes of practice recognised under that statute, Health and Safety in Employment Act 1992, the Resource Management Act 1991, and their subsequent amendments, electricity supply industry codes of practice and documented enterprise procedures. These include the latest version of, Safety Manual – Electricity Industry (SM-EI) Wellington: Electricity Engineers’ Association.
A full list of current legislation and industry codes is available from:
Infrastructure Industry Training Organisation
PO Box 1245
Hamilton 3240.
3 The phrase in accordance with industry requirements is implicit in all outcomes and evidence requirements in this unit standard.
4 Definitions
Industry requirements include all asset owner requirements; manufacturers’ specifications; and enterprise requirements which cover the documented workplace policies, procedures, specifications, business, and quality management requirements relevant to the workplace in which assessment is carried out.
Asset owner refers to the owner of an electricity supply network that takes its point of supply from Transpower NZ, and delivers electricity to industrial, commercial and residential customers.
5 LV is defined as ‘low voltage’ and includes voltages up to and including 1000 volts ac. and HV is defined as ‘high voltage’ and includes voltages above 1000 volts a.c.
Outcomes and evidence requirements
Outcome 1
Demonstrate knowledge of power cable construction.
Evidence requirements
1.1 The types of conductor materials used in power cables are described.
Range includes but is not limited to – copper, aluminium, aluminium alloys.
1.2 The types of conductor configurations used in power cables are described.
Range includes but is not limited to – concentric, compressed, compacted, solid, stranded, sectored.
1.3 The types and purpose of insulation materials used in power cables are described.
Range includes but is not limited to – paper (mineral insulated and mineral insulated non-draining), polyvinyl chloride (PVC), crosslinked polyethylene (XLPE), ethylene propylene rubber (EPR).
1.4 The types and purpose of insulation screens used in power cables are described.
Range semi-conducting tapes or extrusion, graphite layer, metallic screens, aluminium, wire, copper braid, plain copper wire.
1.5 The types and purposes of armour used in power cables are described.
Range steel wire, steel tape.
1.6 The types and purpose of sheathing and serving used in power cables are described.
Range includes but is not limited to – PVC, high density poly ethylene (HDPE), medium density poly ethylene (MDPE), lead, compound impregnated tapes.
1.7 The types and purpose of ancillary components used in power cables are described.
Range includes but is not limited to – fillers, belting, bedding.
1.8 Basic power cable design and construction is described.
Range stress control, capacity, single and multi-core configurations, resistance, inductance, capacitance, belted, screened, neutral screened.
Planned review date / 31 December 2019Status information and last date for assessment for superseded versions
Process / Version / Date / Last Date for Assessment /Registration / 1 / 18 September 2014 / N/A
Consent and Moderation Requirements (CMR) reference / 0120
This CMR can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Please note
Providers must be granted consent to assess against standards (accredited) by NZQA, before they can report credits from assessment against unit standards or deliver courses of study leading to that assessment.
Industry Training Organisations must be granted consent to assess against standards by NZQA before they can register credits from assessment against unit standards.
Providers and Industry Training Organisations, which have been granted consent and which are assessing against unit standards must engage with the moderation system that applies to those standards.
Requirements for consent to assess and an outline of the moderation system that applies to this standard are outlined in the Consent and Moderation Requirements (CMR). The CMR also includes useful information about special requirements for organisations wishing to develop education and training programmes, such as minimum qualifications for tutors and assessors, and special resource requirements.
Comments on this unit standard
Please contact the Infrastructure Industry Training Organisation if you wish to suggest changes to the content of this unit standard.
Infrastructure ITOSSB Code 101813 / Ó New Zealand Qualifications Authority 2014