NZQA registered unit standard
28280 version 1
Page 1 of 4
Title
Demonstrate knowledge of underground power cable installation
requirements
Level
4
Credits
4
Purpose
People credited with this unit standard are able to demonstrate
knowledge of: underground power cable voltage stress and
stress control techniques; cable descriptions and cable design
voltages; and cable preparation techniques for jointing
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
Electricity Act 1992 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 and 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.
IEC – International Electrotechnical Commission.
IEEE – Institute of Electrical and Electronics Engineers.
Infrastructure ITO
SSB Code 101813
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
5
28280 version 1
Page 2 of 4
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.
Outcomes and evidence requirements
Outcome 1
Demonstrate knowledge of underground power cable voltage stress and stress control
techniques.
Evidence requirements
1.1
Voltage stress in LV and HV cables is described.
Range
1.2
includes but is not limited to – radial, longitudinal, tangential.
Stress control techniques are described.
Range
includes but is not limited to – screening, geometric, capacitive,
belting.
Outcome 2
Demonstrate knowledge of cable descriptions and cable design voltages.
Evidence requirements
2.1
International standards and guidelines related to cable manufacture and
installation are described.
Range
2.2
Cable types are described in terms of LV and HV cables.
Range
2.3
IEC, IEEE.
single core, multi-core, polymeric and paper insulated, voltage
ratings.
Cable design voltage ratings are described.
Range
LV and HV cables, single core, multi-core cables.
Outcome 3
Demonstrate knowledge of cable preparation techniques for jointing.
Infrastructure ITO
SSB Code 101813
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
28280 version 1
Page 3 of 4
Evidence requirements
3.1
Cable bending techniques are described.
Range
3.2
bending radii for LV, HV, single core, multi-core, polymeric and
paper insulated cables.
Cable stripping techniques of LV and HV cables are described.
Range
sheaths, armour, bedding, fillers, lead, paper, screens (metallic,
graphite, bonded, tape, wire), semi-conducting layers, and primary
insulation.
3.3
Cable insulation preparation and reinstatement techniques are described.
3.4
Cable sheath, shield preparation and reinstatement are described.
3.5
Cable jointing methods are described.
3.6
Use of specialist tools and equipment is described.
Range
3.7
knives, specialist stripping tools (semi-conducting layers), crimping
tools, compression tools, spiking guns, smoothing materials,
cleaning liquids, and jointing pastes.
Work site management requirements are described.
Range
work site lay-out, cleanliness standards, weather conditions,
moisture control, joint pit design and construction, work site
access.
Planned review date
31 December 2019
Status 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.
Infrastructure ITO
SSB Code 101813
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
28280 version 1
Page 4 of 4
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
qualifications@infrastructureito.org.nz if you wish to suggest changes to the content of this
unit standard.
Infrastructure ITO
SSB Code 101813
 New Zealand Qualifications Authority 2016