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Install substation earthing and bonding system
Level
3
Credits
3
Purpose
People credited with this unit standard are able to: interpret design drawings
and installation requirements of earthing and bonding standards and plan for
installation; obtain earthing and bonding installation materials and resources,
and install; and inspect earthing and bonding system.
Subfield
Electricity Supply
Domain
Electricity Supply - Power System Maintenance
Status
Registered
Status date
27 April 1998
Date version published
20 June 2008
Planned review date
31 December 2009
Entry information
Prerequisite: Unit 14287, Use and maintain test
instruments used within the high voltage electrical
industry; or demonstrate equivalent knowledge and
skills.
Accreditation
Evaluation of documentation and visit by NZQA and
industry.
Standard setting body (SSB)
Electricity Supply Industry Training Organisation
Accreditation and Moderation Action Plan (AMAP) reference
0120
This AMAP can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Special notes
1
This unit standard can be assessed against in a workplace environment, or in a
training or educational environment if simulated equipment response and examples
are able to be provided, or in a combination of both environments.
 New Zealand Qualifications Authority 2016
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2
Performance and work practices in relation to the elements and performance criteria
must comply with all current legislation, especially the Electricity Act 1992, and any
regulations and codes of practice recognised under that statute; the Health and
Safety in Employment Act 1992; and the Resource Management Act 1991.
Electricity supply industry codes of practice and documented industry procedures
include the Safety Manual – Electricity Industry (SM-EI) (2004) Wellington: Electricity
Engineers’ Association. A full list of current legislation and industry codes is
available from the Electricity Supply Industry Training Organisation, PO Box 1245,
Hamilton.
3
The phrase in accordance with industry requirements is implicit in all elements and
performance criteria in this unit standard.
4
‘Industry requirements’ include all industry and workplace documented policies,
procedures, specifications, and business and quality management relevant to the
workplace where assessment is carried out.
5
All work practices shall meet documented enterprise maintenance standards,
including the quality management requirements, and the documentation of activities,
events, and decisions.
6
The range of this unit standard is limited to installing earthing and bonding system
normally applied at electricity supply substations.
7
The following terms and abbreviations relate to this unit standard.
AS/NZS = Australian/New Zealand Standard
IEC = International Electrotechnical Commission.
Elements and performance criteria
Element 1
Interpret design drawings and installation requirements of earthing and bonding standards
and plan for installation.
Performance criteria
1.1
The earthing and bonding design drawings are interpreted in terms of client
installation requirements.
1.2
The earthing and bonding installation standards are interpreted in terms of client
requirements.
Range
1.3
includes a knowledge and verification of understanding of the
requirements of NZECP 35, AS/NZS 3000:2007 Section 5.
The drawings and standards are translated into practical installation
requirements and work plans.
Range
includes but is not limited to – quantities and size of bonding
conductors, distances, fixture and excavation requirements,
installation work plan.
 New Zealand Qualifications Authority 2016
14330 version 3
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Element 2
Obtain earthing and bonding installation plant, tools, materials and resources, and install.
Performance criteria
2.1
The required materials, plant, tools and resources are assembled in terms of
client installation requirements.
Range
2.2
The earth mat installation is completed following the work plan.
Range
2.3
includes but is not limited to – the selection of suitable molds to
suit the conductors if exothermic welding (cadweld) is to be used
for jointing and terminating conductors, welding tools, and
materials.
may include but is not limited to installation following work plan
and design for earth mat.
All bus system equipment is bonded to the earth mat.
Range
may include but is not limited to checks of all earthing bonds to
ensure acceptability of connection to the earth mat.
Element 3
Inspect earthing and bonding system.
Performance criteria
3.1
Each item of bus equipment is bonded to meet the requirements of the earthing
and bonding standards.
3.2
Operational safety earthing tail clamp ‘jug handles’ and bus bonding points are
located at operationally suitable positions to allow compliance with industry
electrical safety rules.
Range
3.3
may include but is not limited to providing suitably located bus
bonding points as specified for operational requirements.
The earth mat resistance meets specification requirements.
Range
may include but is not limited to compliance with NZECP 35 in
regard to step and touch voltages resistance.
Please note
Providers must be accredited by NZQA, or an inter-institutional body with delegated
authority for quality assurance, before they can report credits from assessment against
unit standards or deliver courses of study leading to that assessment.
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Industry Training Organisations must be accredited by NZQA before they can register
credits from assessment against unit standards.
Accredited providers and Industry Training Organisations assessing against unit standards
must engage with the moderation system that applies to those standards.
Accreditation requirements and an outline of the moderation system that applies to this
standard are outlined in the Accreditation and Moderation Action Plan (AMAP). The
AMAP 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 Electricity Supply Industry Training Organisation info@esito.org.nz if
you wish to suggest changes to the content of this unit standard.
 New Zealand Qualifications Authority 2016