NZQA registered unit standard
14297 version 4
Page 1 of 6
Title
Carry out commissioning and maintenance tests on single and
multiple input protection systems
Level
5
Credits
6
Purpose
People credited with this unit standard are able to: prepare to
test single and multiple input protection systems; set up test
equipment; carry out commissioning and maintenance tests on
single and multiple input protection systems; interpret test
results and complete compliance documentation; and return
the 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 or 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
14297 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 commissioning and maintenance tests on
single and multiple input protection relays. Testing is normally initially applied in a
test laboratory situation and maintenance normally takes place at electricity supply
substations. Please note that this unit standard does not cover distance protection.
8
Definition
CT
=
Current Transformer.
Outcomes and evidence requirements
Outcome 1
Prepare to test single and multiple input protection systems.
Evidence requirements
1.1
The relevant technical specifications and logic schematic diagrams for single
and multiple input protection systems are selected and interpreted in terms of
client requirements.
Range
1.2
The test specifications and performance standards for protection system relays
are selected.
Range
1.3
may include but is not limited to – differential, power, phase
displacements, synchronising, directional earth faults, inverse,
definite time, electronic and electro-mechanical relays.
may include but is not limited to – performance characteristics,
pick-up, drop-off, polar plots.
The selected test circuit, inspection, and data acquisition monitoring
requirements are identified in terms of client testing requirements.
Range
may include but is not limited to – differential, power, phase
displacements, synchronising, directional earth faults, inverse,
definite time, electronic and electro-mechanical relays,
performance characteristics, pick-up, drop-off, polar plots.
Electricity Supply Industry Training Organisation
SSB Code 101813
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
1.4
The commissioning, or test plan, is prepared and provides for a comprehensive
test of the whole protection system.
Range
1.5
14297 version 4
Page 3 of 6
may include but is not limited to – correct function at prescribed
signal levels, input signals are confirmed as being at the correct
polarity and value, correct and accurate calibration of indications,
alarms valid, component tests, subsystem tests, system tests.
The extent of main equipment to be released from service is identified and an
equipment release is requested for work access.
Range
includes but is not limited to – completing all requests in a timely
and correct manner.
Outcome 2
Set up test equipment.
Evidence requirements
2.1
The selected monitoring equipment is correctly assembled to be ready for
testing.
Range
2.2
The prepared commissioning, or test plan, and selected test, inspection, and
monitoring procedures are made available for reference during testing.
Range
2.3
may include but is not limited to – design specifications, previous
test results, history cards, manufacturer’s information and
manuals, client’s performance requirements.
The status of the test instrument calibration is verified as required by the test
procedures.
Range
2.4
may include but is not limited to – manufacturer’s guidelines, client
operating and maintenance standards and test procedures,
inspection of test leads for damage.
includes but is not limited to – calibration certificates are valid,
accuracy of settings.
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 include but are not limited to – discharged
capacitors, isolated auxiliary services, identified risk of trip for
other equipment and alarms, earthed open circuit CT.
Electricity Supply Industry Training Organisation
SSB Code 101813
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
14297 version 4
Page 4 of 6
Outcome 3
Carry out commissioning and maintenance tests on single and multiple input protection
systems.
Evidence requirements
3.1
The tests are carried out using the selected procedures and commissioning
plans.
Range
3.2
may include but is not limited to – differential, power, phase
displacements, synchronising, directional earth faults, inverse,
definite time, electronic and electro-mechanical relays,
performance characteristics, pick-up, drop-off, polar plots.
The results of the tests and inspections are recorded as required by standard
documentation or as specified by the client.
Range
may include but is not limited to – client requirements, values and
signal functional relationships captured for analysis and
interpretation.
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 design specification
and schematic diagrams consistent with manufacturer’s
requirements, enterprise standards, previous test results, ensure
the results of tests are within given specifications.
The acceptable results are noted on the test sheet.
Range
may include but is not limited to – actual values measured,
functional compliance against the prescribed values in the test
plan.
4.3
Tests with unacceptable results are repeated for confirmation.
4.4
Where necessary, adjustments are made to the protection system settings and
the system is retested.
Range
may include but is not limited to – recording setting changes and
the reason for changes.
Electricity Supply Industry Training Organisation
SSB Code 101813
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
4.5
14297 version 4
Page 5 of 6
Compliance or non-compliance documentation is completed for each unit
tested.
may include but is not limited to – manufacturer’s requirements,
client documentation requirements, recommendations for remedial
work, record of adjustments made, recommendations for design
modifications.
Range
Outcome 5
Return the equipment to service.
Evidence requirements
5.1
All temporary testing and monitoring equipment circuitry is removed from the
equipment.
5.2
All protection relays are left correctly set.
may include but is not limited to – recording final settings for future
reference.
Range
5.3
The test team report of ‘all clear’ for the protection system, and the return to
work control system authorisation, are verified in accordance with client
requirements.
5.4
The network protection system is switched into service without incident.
includes but is not limited to – main equipment is checked and
secure, all equipment is left in a state ready for service, the
equipment is returned to service without incident.
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.
Electricity Supply Industry Training Organisation
SSB Code 101813
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
14297 version 4
Page 6 of 6
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 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