14281 version 3
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Carry out acceptance and maintenance tests on distance protection
relays
Level
5
Credits
4
Purpose
People credited with this unit standard are able to: prepare for acceptance
and maintenance tests on distance protection relays; set up test equipment;
carry out acceptance and maintenance tests; interpret test results and
complete compliance documentation; and return equipment to service.
Subfield
Electricity Supply
Domain
Electricity Supply - Testing
Status
Registered
Status date
16 April 2010
Date version published
16 April 2010
Planned review date
31 December 2014
Entry information
Prerequisites: Unit 14280, Carry out acceptance and
maintenance tests on single input protection relays; Unit
14297, Carry out tests on multiple input protection
systems; Unit 14287, Use and maintain test instruments
used within the high voltage electrical industry; Unit
14700, Apply and remove safety measures in an
electricity supply environment; Unit 14701, Manage
electricity supply work control systems; Unit 12296,
Apply earths to and remove earths from electrical
conductors, plant and equipment; or demonstrate
equivalent knowledge and skills.
Core electrical theory is essential knowledge
underpinning the performances required by this unit
standard.
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.
 New Zealand Qualifications Authority 2016
14281 version 3
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Special notes
1
This unit standard can be assessed 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.
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) 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.
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 asset owner requirements; manufacturers’
specifications; and enterprise requirements which cover the documented workplace
policies, procedures, specifications, business, and quality management requirements
relevant to the workplace in which assessment is carried out.
5
The range of this unit standard is limited to carrying out acceptance and maintenance
tests on transmission line protection relays normally, initially, applied in a test
laboratory, and for maintenance tests applied at electricity supply Substations.
6
The following abbreviation relates to this unit standard:
DCEF = Directional comparison earth fault.
Elements and performance criteria
Element 1
Prepare for acceptance and maintenance tests on distance protection relays.
Performance criteria
1.1
The relevant equipment technical specifications for distance protection relays
are selected.
Range
may include but are not limited to specifications for the following
relay types or similar – Optimho, REL 100, RYZFB, RYZOE,
Quadramho, THR3PE1, THR4PE2, SEL-321, RAZOA and include
electro-mechanical and solid state relays, travelling wave type,
impedance type, step time distance type.
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14281 version 3
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1.2
The relay test specifications and performance standards are selected.
Range
1.3
The required test circuit and inspection requirements are identified to meet
client testing requirements.
Range
1.4
may include but are not limited to – performance characteristics,
pick-up, drop-off, polar plots, delay time, definite time, circuit
breaker failure, distance relays, inter-tripping, blocking,
acceleration, DCEF.
may include but is not limited to – test equipment necessary for
carrying out the selected tests as, for example – performance
characteristics, pick-up, drop-off, polar plots, delay time, definite
time, circuit breaker failure, distance relays, inter tripping, blocking,
acceleration, DCEF.
The extent of main equipment to be released from service is identified and the
equipment release requested for work access.
Range
may include but is not limited to completing all requests in a timely
and correct manner.
Element 2
Set up test equipment.
Performance criteria
2.1
Access Permit or its approved equivalent is obtained and the safe work zone
identified.
Range
2.2
The selected circuit and test equipment is assembled ready for testing.
Range
2.3
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 – manufacturer guidelines, client
operating and maintenance standards and test procedures,
inspection of test leads for damage.
The selected test and inspection procedures are available for use during
testing.
Range
may include but is not limited to – previous test results, history
cards, manufacturer’s information and manuals.
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2.4
The status of the test instrument calibrations is verified as required by test
procedures.
Range
2.5
may include 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.
Range
may include but is not limited to – capacitors, at charge, auxiliary
services, risk of trip for other equipment, alarms.
Element 3
Carry out acceptance and maintenance tests.
Performance criteria
3.1
The tests are carried out using the selected procedures or as specified by the
client.
Range
3.2
may include but are not limited to manufacture and client test
procedures for the test examples listed – performance
characteristics, pick-up, drop-off, polar plots, delay time, definite
time, circuit breaker failure, distance relays, inter-tripping,
blocking, acceleration, DCEF;
evidence required – must be able to carry out tests on three of the
relay types listed and types of operating methods.
The results of the tests and inspections are accurately recorded as required by
client documentation.
Element 4
Interpret test results and complete compliance documentation.
Performance criteria
4.1
The documented test results are interpreted for compliance with the standard
required.
Range
4.2
may include but are not limited to reference to – maker’s
requirements, client standards, previous test results records,
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, record of adjustments made.
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14281 version 3
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Element 5
Return equipment to service.
Performance criteria
5.1
The equipment being tested is safely returned to service.
Range
may include but is not limited to ensuring – all test equipment has
been removed; all re-connection work is completed, checked, and
secure; all equipment is left in a state ready for service; the
equipment is returned to service without incident.
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.
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