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National Certificate in Electricity Supply (Sub Station Maintainer)
(Level 4)
Level
4
Credits
140
This qualification has been reviewed. The last date to meet the requirements is 31
December 2018.
Transition Arrangements
This qualification has been reviewed and replaced by the New Zealand Certificate in
Electricity Supply (Substation Maintenance) (Level 4) [Ref: 2969].
The last date for entry into programmes leading to this qualification is 31 December 2016.
The last date for assessment of this qualification is 31 December 2018, when the
qualification will be discontinued.
People currently working towards this qualification may either complete the requirements
by 31 December 2018, or transfer their results to the replacement qualification.
For detailed information see Review Summaries on the NZQA website.
NQF Registration Information
Process
Registration
Review
Version
1
2
Date
September 2004
August 2015
Last Date for Award
December 2018
December 2018
Standard Setting Body
Connexis
PO Box 2759
Wellington, 6011
Telephone
Fax
Email qualifications
Website
Email:
Infrastructure ITO
SSB Code 101813
04 499 9144
04 499 9145
@infrastructureito.co.nz
http://www.infrastructureito.org.nz
qualifications@connexis.org.nz
 New Zealand Qualifications Authority 2016
NZQF NQ Ref
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National Certificate in Electricity Supply (Sub Station Maintainer)
(Level 4)
Level
4
Credits
140
Purpose
This national certificate is awarded to people who have demonstrated competence in the
skills and knowledge required for employment in the electricity supply industry as a Sub
Station Maintainer. It provides entry into the National Diploma in Electricity Supply
(Level 5) [Ref: 0674].
It caters for trainees within this industry whose primary role is carrying out maintenance
activities on the primary plant and equipment installed in high voltage electricity sub
stations.
Holders of the qualification will be able to:
 Joint electricity network overhead conductors
 Carry out in-service visual inspections on sub station equipment and auxiliary plant
 Carry out routine inspections and servicing of power transformers, distribution power
transformers, high voltage minimum and bulk oil circuit breakers, pole mounted recloser circuit breakers, high voltage indoor metal clad circuit breakers and bus
 Carry out routine inspections and servicing on sub station emergency and security
services
 Install sub station earthing and bonding system
 Carry out routine service on instrument transformers, and routine inspection and minor
servicing on high voltage SF6 outdoor circuit breakers
 Service and repair high voltage disconnectors, earth switches and bus equipment
 Apply and remove safety measures in an electricity supply environment
 Use and maintain test instruments used within the high voltage electrical industry.
 Carry out insulating oil sampling and voltage breakdown tests.
The qualification contains unit standards that build on the knowledge and skills recognised
by the National Certificate in Electricity Supply (Electrical) (Level 4) [Ref: 0921], National
Certificate in Electricity Supply (Mechanical Fitter) (Level 4) with strands in Hydro,
Networks, and Thermal; and an optional strand in Electrical Services [Ref: 0918], and
National Certificate in Electricity Supply (Electrical Services Technician) (Level 3)
[Ref: 1098].
Special Notes
Prerequisite: one of the following
National Certificate in Electricity Supply (Electrical) (Level 4) [Ref: 0921]
National Certificate in Electricity Supply (Mechanical Fitter) (Level 4) with strands in Hydro,
Networks, and Thermal; and an optional strand in Electrical Services [Ref: 0918]
Infrastructure ITO
SSB Code 101813
 New Zealand Qualifications Authority 2016
NZQF NQ Ref
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National Certificate in Electricity Supply (Electrical Services Technician) (Level 3)
[Ref: 1098]
or demonstrate equivalent knowledge and skills.
Credit Range
Level 3
Level 4
Minimum totals
Total
Compulsory
51
69
120
Elective
0-20
0-20
20
140
Requirements for Award of Qualification
This qualification will be awarded to people credited with all of the compulsory unit
standards listed.
Award of NQF Qualifications
Credit gained for a standard may be used only once to meet the requirements of this qualification.
Unit standards and achievement standards that are equivalent in outcome are mutually exclusive for the
purpose of award. The table of mutually exclusive standards is provided in the Qualifications Authority Rules
and Procedures publications available at www.nzqa.govt.nz/ncea/.
Reviewed standards that continue to recognise the same overall outcome are registered as new versions
and retain their identification number (Id). Any version of a standard with the same Id may be used to meet
qualification requirements that list the Id and/or that specify the past or current classification of the standard.
Detailed Qualification Requirements
Compulsory
All the unit standards listed below are required.
Field
Engineering and Technology
Subfield
Electrical Supply
Domain
Electricity Supply – Core Skills
Id
Title
Level
Credit
17027
3
2
3
2
3
2
3
3
Level
3
Credit
4
17028
19323
19950
Demonstrate the requirements for holding access permits on
high voltage electrical lines
Demonstrate the requirements for holding permits on high
voltage electrical equipment
Demonstrate knowledge of single and three phase
transformers used in the electricity supply industry
Demonstrate knowledge of electrical testing and test
instruments in the electricity supply industry
Domain
Electricity Supply – Distribution Networks
Id
Title
10512 Joint electricity network overhead conductors
Infrastructure ITO
SSB Code 101813
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Domain
Electricity supply – Power System Maintenance
Id
Title
14328 Carry out in service visual inspections on Substation equipment
for safe operation
14329 Carry out routine inspection and servicing on distribution power
transformers 33kV to 11kV
14330 Install substation earthing and bonding system
Level
3
Credit
4
4
8
3
3
3
4
4
8
4
8
4
7
3
6
4
7
4
6
4
6
3
3
4
4
4
5
3
4
3
4
3
3
Domain
Electricity Supply – Power System Management
Id
Title
16285 Plan for scheduled work on electricity supply power system
equipment
Level
4
Credit
10
Domain
Electricity Supply – Testing
Id
Title
14287 Use and maintain test instruments used within the high voltage
electrical industry
14294 Carry out insulating oil sampling and voltage breakdown tests
Level
3
Credit
4
3
3
14331
14332
14333
14334
14335
14336
14337
14338
14339
14341
14342
14344
14346
14700
Carry out in-service visual inspection checks on substation
auxiliary plant and equipment
Carry out routine inspection and service on oil filled distribution
power transformers 11kV to 400V
Carry out routine inspection and servicing on transmission
power transformers above 33kV
Carry out routine service on transmission instrument
transformers 33kV and above
Service and repair high voltage disconnectors, earth switches
and other bus structure equipment
Carry out routine inspection and servicing on distribution
instrument transformers below 33kV
Carry out routine inspection and servicing on high voltage
minimum oil circuit breakers
Carry out routine inspection and servicing on high voltage bulk
oil circuit breakers
Carry out routine inspection and servicing on 11kV and 33kV
pole mounted re-closer circuit breakers
Carry out routine inspection and service on high voltage indoor
metal clad circuit breakers and bus
Carry out routine inspection and minor servicing on high
voltage SF6 outdoor circuit breakers
Carry out routine inspection and servicing on substation
emergency services
Carry out routine inspection and servicing on security services
at substations
Apply and remove safety measures in an electricity supply
environment
Infrastructure ITO
SSB Code 101813
 New Zealand Qualifications Authority 2016
NZQF NQ Ref
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Elective
A minimum of 20 credits is required from unit standards at level 3 or above, chosen from
any of the following subfields and/or specified unit standards.
Domain
Electricity Supply – Power System Maintenance
Id
Title
14340 Carry out routine inspection and servicing on high voltage air
blast circuit breakers
14343 Carry out routine inspection and servicing on high voltage gas
insulated switchgear
14345 Carry out routine inspection and servicing on substation air
compressor systems
14347 Carry out routine inspection and service of high voltage
capacitor banks and signal injection plant
Field
Engineering and Technology
Subfield
Electricity Supply
Level
4
Credit
4
4
5
3
4
3
3
Domain
Electricity Supply – Core
Skills
Electricity Supply – Power
System Management
Electricity Supply – Testing
Transition Arrangements
Any credit gained for standards previously classified Engineering and
Technology>Electricity Supply>Electricity Networks can be used to meet the requirements
of the Elective.
Certification
The certificate will display the logos of the Qualifications Authority and the Electricity
Supply Industry Training Organisation.
Classification
This qualification is classified according to the NQF classification system and the
New Zealand Standard Classification of Education (NZSCED) system as specified below.
DAS Classification
Code
Description
318
Engineering and
Technology/Electricity Supply
Infrastructure ITO
SSB Code 101813
NZSCED
Code
Description
031313 Engineering and Related
Technologies/Electrical and
Electronic Engineering and
Technology/Electrical Fitting,
Electrical Mechanics
 New Zealand Qualifications Authority 2016
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Quality Management Systems
Providers and Industry Training Organisations must be accredited by a recognised Quality Assurance Body
before they can register credits from assessment against standards. Accredited providers and Industry
Training Organisations assessing against standards must engage with the moderation system that applies to
those standards. Accreditation requirements and the moderation system are outlined in the associated
Accreditation and Moderation Action Plan (AMAP) for each standard.
Infrastructure ITO
SSB Code 101813
 New Zealand Qualifications Authority 2016
NZQF NQ Ref
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Pathway Diagram
National Certificate in
Electricity Supply
(Level 2) [Ref: 0868]
National Certificate in
Electricity Supply
(Mechanical Fitter) (Level 3)
with strands in Hydro, Netw orks,
National Certificate in
Electricity Supply
(Electrical) (Level 3)
[Ref: 0888]
and Thermal [Ref : 0891]
National Certificate in
Electricity Supply
(Electrical) (Level 4)
[Ref: 0921]
National Certificate in
Electricity Supply (Electrical
Services Technician)
(Level 3) [Ref: 1098]
National Certificate in Electricity
Supply (Mechanical Fitter)
(Level 4) with strands in Hydro,
Networks, and Thermal; and an
optional strand in Electrical
Services [Ref: 0918]
Proposed: National Certificate
in Electricity Supply (Hydro
Maintainer) (Level 4)
National Certificate in
Electricity Supply (Sub
Station Maintainer) (Level 4)
[Ref: 1118]
National Certificate in
Electricity Supply (Field
Switcher) (Level 4)
[Ref: 1117]
Proposed: National
Certificate in Electricity
Supply (Hydro Maintainer)
(Level 5)
National Diploma in Electricity
Supply (Level 5)
[Ref: 0674]
National Diploma in Electricity
Supply (Level 6)
[Ref: 0675]
Infrastructure ITO
SSB Code 101813
 New Zealand Qualifications Authority 2016