NZQA registered unit standard
14275 version 4
Page 1 of 5
Title
Carry out maintenance and/or commissioning tests on an earthing
mat and equipment bonding system
Level
3
Credits
3
Purpose
People credited with this unit standard are able to: prepare to
carry out maintenance and/or commissioning tests on an
earthing mat and equipment bonding system; set up test
equipment; carry out maintenance and/or commissioning tests
on an earthing mat and equipment bonding system; and
interpret test results and complete documentation records.
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 2016
NZQA registered unit standard
14275 version 4
Page 2 of 5
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 commissioning and/or maintenance tests on
earthing mat and equipment bonding systems. Testing is normally applied at
electricity supply substations.
8
Definitions
NZECP = New Zealand Electrical Code of Practice
IEC
= International Electrotechnical Commission.
Outcomes and evidence requirements
Outcome 1
Prepare to carry out maintenance and/or commissioning tests on an earthing mat and
equipment bonding system.
Evidence requirements
1.1
The type of earthing mat and equipment bonding system, and the related
technical specifications and test procedures, are identified in terms of client
equipment requirements.
Range
1.2
The tests required are identified and interpreted from the selected specifications
and test procedures, in terms of client equipment requirements.
Range
1.3
may include but is not limited to – specifications, drawings, client
requirements for the earthing mat of the substation’s power
system, switchyard, power cable sheath, equipment bonding.
tests may include but is not limited to – resistance, visual
inspection, step and touch voltage, resistivity, continuity, contact
resistance.
Access to the equipment is obtained.
Range
may include but is not limited to – requesting access, determining
status of equipment.
Electricity Supply Industry Training Organisation
SSB Code 101813
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
14275 version 4
Page 3 of 5
Outcome 2
Set up test equipment.
Evidence requirements
2.1
The test equipment required for the tests is assembled.
Range
may include but is not limited to – ohmmeters, voltmeters, ductor
test meters, drawings.
2.2
All test equipment is checked to ensure that the calibration certification is valid.
2.3
The selected test and commissioning standards and procedures are made
available for reference during testing.
Range
2.4
The test lead connections are connected to the equipment under test.
Range
2.5
may include but is not limited to – manufacturer’s or client’s or
international standards and specifications.
may include but is not limited to – the test lead connections are
placed where good contact is achieved and where lead to
equipment contact resistance is low.
The operational earth bond location points are checked for compliance with
client requirements.
Range
requirements may include but are not limited to – position,
accessibility, dimensions.
Outcome 3
Carry out maintenance and/or commissioning tests on an earthing mat and equipment
bonding system.
Evidence requirements
3.1
The selected tests are carried out consistent with the standard procedures and
following the commissioning plan, or as specified by the client.
Range
3.2
includes but is not limited to – NZECP 35:1993, client
requirements, IEC 61672, all main equipment bonding to the earth
mat has been tested, all operational earth bond points (jug
handles) tested and inspected.
The results of the tests are recorded as required by standard documentation or
as specified by the client.
Electricity Supply Industry Training Organisation
SSB Code 101813
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
3.3
14275 version 4
Page 4 of 5
All readily accessible earth mat bonded joints are inspected for correct
installation.
may include but is not limited to – position, conductor size,
tightness of bond.
Range
Outcome 4
Interpret test results and complete compliance documentation.
Evidence requirements
4.1
The recorded results are interpreted for compliance with the selected standard
requirements.
may include but is not limited to – measurement uncertainty, limits
of accuracy, current rating.
Range
4.2
The compliance or non-compliance documentation is completed for each unit or
zone tested.
may include but is not limited to – key results, conclusions,
recommendations for corrective action, suitability for entering
service.
Range
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
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.
Electricity Supply Industry Training Organisation
SSB Code 101813
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
14275 version 4
Page 5 of 5
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 Electricity Supply Industry Training Organisation info@esito.org.nz 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 2016