NZQA registered unit standard
20423 version 3
Page 1 of 5
Title
Install high voltage (HV) electricity network overhead conductors
Level
4
Credits
8
Purpose
People credited with this unit standard are able to: interpret
scope of work for installing high voltage (HV) electricity network
overhead conductors; string electricity network HV conductors;
tension and terminate electricity network conductors; install and
attach electricity network conductors to line hardware; conduct
pre-commissioning checks and tests on overhead conductors;
and report work done on HV electricity network overhead
conductor installation; in accordance with industry
requirements.
Classification
Electricity Supply > Electricity Supply - Distribution Networks
Available grade
Achieved
Entry information
Critical health and
safety prerequisites
Unit 10509, Climb and work on electricity network structures;
Unit 28112, Operate and store machinery, plant, and
equipment in an electricity network environment; and Unit
10512, Joint electricity network overhead conductors; or
demonstrate equivalent knowledge and skills.
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
Safety of personnel and plant must be a priority throughout the assessment. If the
safety requirements are not met the assessment must stop and the candidate will be
assessed as not yet competent.
Infrastructure Industry Training Organisation
SSB Code 101813
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
3
20423 version 3
Page 2 of 5
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, Safety Manual – Electricity Industry (SM-EI) (2004) Wellington: Electricity
Engineers’ Association.
A full list of current legislation and industry codes is available from:
Infrastructure Industry Training Organisation
PO Box 1245
HAMILTON.
4
The phrase in accordance with industry requirements is implicit in all outcomes and
evidence requirements in this unit standard.
5
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.
Asset owner standards are the approved documented work site methods for carrying
out work on an electrical supply network to the standard required by the asset owner.
6
This unit standard is intended for use in the assessment of Distribution and
Transmission Line Mechanics and all terminology should be related to that sector of
the industry.
7
Assessment of practical skills against the outcomes in this standard requires three
practical observations from three different workplace activities.
Outcomes and evidence requirements
Outcome 1
Interpret scope of work for installing HV electricity network overhead conductors.
Evidence requirements
1.1
Conductor requirement is established.
Range
size, type.
1.2
Structure arrangement and type is established.
1.3
Installation work plan and method are established.
Infrastructure Industry Training Organisation
SSB Code 101813
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
Range
1.4
20423 version 3
Page 3 of 5
may include but is not limited to – equipment location, protection of
equipment, pull length, rigging set up, structure access, safety
considerations;
evidence of four is required.
HV conductor sag tension is established.
Range
sag charts, clearances, line configuration, structure type, loadings.
Outcome 2
String electricity network HV conductors.
Evidence requirements
2.1
Conductors are handled.
2.2
Conductors are installed.
Range
electrical protection, mechanical protection, manufacturer’s
specifications, safety considerations.
Outcome 3
Tension and terminate electricity network conductors.
Evidence requirements
3.1
Conductors are installed to specified sag and tension requirements.
Range
3.2
may include but is not limited to – sag charts, visual sag,
clearances, line configuration, loadings of structures, asset owners
specifications;
evidence of two sources is required.
Conductors are terminated in dead end.
Range
binding, chafers, clamp, compression, preformed;
evidence of two methods is required.
Outcome 4
Install and attach electricity network conductors to line hardware.
Evidence requirements
4.1
Conductors are attached to insulators.
Range
4.2
binding, chafers, clamp, compression, preformed;
evidence of two methods is required.
Construction earths are connected to structure hardware.
Infrastructure Industry Training Organisation
SSB Code 101813
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
4.3
20423 version 3
Page 4 of 5
Conductor hardware is attached.
includes but is not limited to – armour rods, jumpers;
evidence of two is required.
Range
Outcome 5
Conduct pre-commissioning checks and tests on overhead conductors.
Evidence requirements
5.1
Visual checks are conducted.
includes but is not limited to – connections, hazards.
Range
5.2
Tests are carried out.
includes but is not limited to – voltage, polarity, phase rotation.
Range
Outcome 6
Report work done on HV electricity network overhead conductor installation.
Range
includes but is not limited to – electric line history, test reports and results,
service report, work report;
evidence of one type of report is required.
Evidence requirements
6.1
Reported information is complete, concise, and legible.
6.2
Information is recorded in the required company or asset owner’s format and
filed within the scheduled time-frame.
Planned review date
31 December 2018
Status information and last date for assessment for superseded versions
Process
Version Date
Last Date for Assessment
Registration
1
20 April 2004
31 December 2016
Rollover and
Revision
2
25 October 2007
31 December 2016
Review
3
20 March 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.
Infrastructure Industry Training Organisation
SSB Code 101813
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
20423 version 3
Page 5 of 5
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 at
qualifications@infrastructureito.org.nz if you wish to suggest changes to the content of this
unit standard.
Infrastructure Industry Training Organisation
SSB Code 101813
 New Zealand Qualifications Authority 2016