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NZQA registered unit standard
14276 version 4
Page 1 of 6
Title
Carry out maintenance and/or commissioning tests on high voltage
power cables and terminations
Level
3
Credits
4
Purpose
People credited with this unit standard are able to: prepare to
test high voltage power cables and terminations, set up test
equipment; carry out maintenance and/or commissioning tests
on high voltage power cables and terminations; interpret test
results and complete compliance documentation; and place
equipment in, or return equipment to service.
Classification
Electricity Supply > Electricity Supply - Testing
Available grade
Achieved
Entry information
Critical health and
safety prerequisites
Unit 14287, Use and maintain test instruments used within the
high voltage electrical industry, or demonstrate equivalent
knowledge and skills.
Explanatory notes
1
This unit standard is intended for, but not restricted to, workplace assessment. The
range statements across the unit standard can be applied according to
industry-specific equipment, procedures, and processes.
2
Safety of personnel and plant must be prioritised during assessment against this unit
standard. If the client safety requirements are not met assessment must stop.
3
Performance of the evidence requirements 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 current version of the Safety
Manual – Electricity Industry (SM-EI) (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 3240.
Electricity Supply Industry Training Organisation
SSB Code 101813
© New Zealand Qualifications Authority 2011
NZQA registered unit standard
14276 version 4
Page 2 of 6
4
The phrase in accordance with industry requirements applies to all of the evidence
requirements in this unit standard.
5
Industry requirements include all asset owner requirements; manufacturers’
specifications; and enterprise requirements. Enterprise requirements may include
the documented workplace policies, procedures, specifications, business, and quality
management requirements relevant to the workplace in which assessment is carried
out.
6
Practical exercises should be used for assessment wherever possible.
7
This unit standard covers carrying out maintenance and/or commissioning tests on
high voltage power cables. Testing is normally applied at electricity supply
substations or termination sites.
8
Definitions
XLPE = Cross-linked Polyethylene
PILC = Paper Insulated Lead Covered
AC
= Alternating Current
DC
= Direct Current
CT
= Current Transformer.
Outcomes and evidence requirements
Outcome 1
Prepare to test high voltage power cables and terminations.
Evidence requirements
1.1
The equipment technical specification and performance standards are selected
and interpreted in terms of client requirements.
Range
1.2
cable types may include but are not limited to – pressurised oil
filled, gas filled, solid mass impregnated PILC, solid XLPE, PILC,
multicore or single core cables.
The test specifications and performance standards relevant to each equipment
type are selected.
Range
tests may include but are not limited to – insulation, resistance,
sheath insulation resistance, alarm gauge, insulation, fluid, gas
quality, AC high voltage, DC, partial discharge very low frequency,
time domain reflectometry, digital arc reflection, surge pulse
reflection, differential arc reflection, power factor, visual checks;
evidence is required of preparation for at least four different types
of tests.
Electricity Supply Industry Training Organisation
SSB Code 101813
© New Zealand Qualifications Authority 2011
NZQA registered unit standard
1.3
The selected test circuitry and inspection requirements are identified for
carrying out tests as specified by client requirements.
Range
1.4
tests may include but are not limited to – resistance, sheath
insulation resistance, alarm gauge, insulation, fluid, gas quality,
AC high voltage, DC, partial discharge very low frequency, time
domain reflectometry, digital arc reflection, Surge Pulse Reflection,
differential arc reflection, power factor;
evidence is required of at least four different types of tests.
The extent of main equipment to be released from service is identified and the
equipment release is requested for work access.
Range
1.5
14276 version 4
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includes but is not limited to – completing all requests in a timely
and correct manner.
The test procedure plan is developed to meet client requirements.
Range
may include but is not limited to – test personnel, test equipment,
test programme, required outcomes.
Outcome 2
Set up test equipment.
Evidence requirements
2.1
An access permit, or its approved equivalent, is obtained and a safe work zone
is identified.
Range
2.2
The selected circuit and test equipment are assembled to be ready for testing.
Range
2.3
may include but is not limited to – cable manufacturer guidelines,
client operating and maintenance standards and test procedures,
inspection of test leads for damage.
The selected test procedures are obtained from previous testing and are made
available for use during testing.
Range
2.4
may include but is not limited to – placing boundary markers
around the work area, identification of authorisation safety
features.
may include but is not limited to – previous test results, history
cards, manufacturer’s information and manuals.
All test equipment is checked to ensure that the calibration certification is valid.
Electricity Supply Industry Training Organisation
SSB Code 101813
© New Zealand Qualifications Authority 2011
NZQA registered unit standard
2.5
14276 version 4
Page 4 of 6
Any hazards associated with the testing are identified and safety measures are
prepared and implemented to comply with industry safety rules.
Range
hazards may include but are not limited to – charged capacitors,
auxiliary services, risk of trip for other equipment and alarms,
control circuits;
safety measures may include but are not limited to – discharged
capacitors, isolated auxiliary services, identified risk of trip for
other equipment and alarms, earthed open circuit CT.
Outcome 3
Carry out maintenance and/or commissioning tests on high voltage power cables and
terminations.
Evidence requirements
3.1
The tests are carried out using the standard procedures and following the
commissioning plan, or as specified by the client.
Range
3.2
may include but are not limited to – resistance tests, sheath
insulation resistance tests, alarm gauge tests, insulation, fluid or
gas quality tests, AC high voltage tests, DC tests, partial discharge
and power factor.
The results of the tests and inspections are recorded as required by client
documentation.
Outcome 4
Interpret test results and complete compliance documentation.
Evidence requirements
4.1
The documented test results are interpreted for compliance with the standard
required.
Range
4.2
may include but is not limited to – reference to manufacturer’s
requirements, client standards and records of previous test results,
ensure results are within given specifications.
Compliance or non-compliance documentation is completed for each unit
tested.
Range
may include but is not limited to – manufacturer’s requirements,
client documentation requirements, recommendations for remedial
work.
Electricity Supply Industry Training Organisation
SSB Code 101813
© New Zealand Qualifications Authority 2011
NZQA registered unit standard
14276 version 4
Page 5 of 6
Outcome 5
Place equipment in, or return equipment to, service.
Evidence requirements
5.1
The equipment being tested is safely placed in, or returned to, service.
Range
includes but is not limited to ensuring – all test equipment has
been removed, all reconnection work is completed, checked and
secure, all equipment is left in a state ready for service, the
equipment is returned to service without incident.
Planned review date
31 December 2015
Status information and last date for assessment for superseded versions
Process
Version Date
Last Date for Assessment
Registration
1
27 April 1998
31 December 2012
Revision
2
11 February 2004
31 December 2012
Review
3
19 May 2006
31 December 2012
Review
4
8 December 2011
N/A
0120
Consent and Moderation Requirements (CMR) reference
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.
Electricity Supply Industry Training Organisation
SSB Code 101813
© New Zealand Qualifications Authority 2011
NZQA registered unit standard
14276 version 4
Page 6 of 6
Comments on this unit standard
Please contact the Electricity Supply Industry Training Organisation [email protected] if
you wish to suggest changes to the content of this unit standard.
Electricity Supply Industry Training Organisation
SSB Code 101813
© New Zealand Qualifications Authority 2011