NZQA registered unit standard
28195 version 1
Page 1 of 4
Title
Demonstrate knowledge of faults on electricity supply network plant
and equipment
Level
4
Credits
4
Purpose
People credited with this unit standard are able to: demonstrate
knowledge of locating and diagnosing faults on network plant
and equipment; demonstrate knowledge of processes required
for restoring power to network plant and equipment; and
demonstrate knowledge of fault report documentation.
Classification
Electricity Supply > Electricity Supply - Power System
Management
Available grade
Achieved
Entry information
Critical health and
safety prerequisites
Unit 10526, Operate ground and structure mounted electrical
equipment associated with electric lines or cables up to 66kV;
or demonstrate equivalent knowledge and skills.
Explanatory notes
1
This unit standard can be assessed in a workplace environment, or in a training or
educational environment if simulated electricity supply industry equipment responses
and examples are able to be provided, or in a combination of both environments.
2
Performance and work practices in relation to the outcomes and evidence
requirements must comply with all current legislation, especially the Electricity Act
1992 and any subsequent amendments, and any regulations, codes of practice
recognised under that statute, Health and Safety in Employment Act 1992, the
Resource Management Act 1991, and their subsequent amendments, electricity
supply industry codes of practice and documented enterprise procedures. These
include, Safety Manual – Electricity Industry (SM-EI) (2004) Wellington: Electricity
Engineers’ Association.
A full list of current legislation and industry codes is available from:
Infrastructure Industry Training Organisation
PO Box 1245
HAMILTON.
3
The phrase in accordance with industry requirements is implicit in all outcomes and
evidence requirements in this unit standard.
Infrastructure Industry Training Organisation
SSB Code 101813
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
28195 version 1
Page 2 of 4
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
Definitions
Asset owner refers to the owner of an electricity supply network that takes its point of
supply from Transpower NZ, and delivers electricity to industrial, commercial and
residential customers.
Asset owner standards are the approved documented work site methods for carrying
out work on an electrical supply network to the standard required by the asset owner.
Switching refers to actions carried out by a network control centre to divert electrical
current, and permit contractors to perform work safely and efficiently on an electricity
supply network without discontinuing supply to customers.
Network plant and equipment refers to plant and equipment that form part of an
electrical network used to provide and distribute electricity to industrial, commercial
and residential customers.
SCADA – Supervisory Control and Data Acquisition system, a computer system that
is used to operate equipment and monitor the performance of the electrical power
system and/or network, gather data for analytical purposes, and generally assist the
operation and delivery of electrical network functions concerning the supply of
electricity to customers.
Outcomes and evidence requirements
Outcome 1
Demonstrate knowledge of locating and diagnosing faults on network plant and equipment.
Evidence requirements
1.1
Methods to determine if fault conditions are present are explained.
Range
1.2
Requirements for fault response times are explained.
Range
1.3
may include but is not limited to trip and flagging relay signals,
section of faulted network, equipment tripped, sign of damage,
customer information, protection tripping, circuit breaker tripping,
results from line test, line patrols, sectionalising switching.
Evidence of four fault conditions required.
may include but is not limited to – asset owner’s network operation
standard requirement contracts, standard supply distribution
network procedures, essential services.
Evidence of the requirements for one fault response time required.
Requirements for fault indications from protection equipment to be monitored
and documented for maintenance purposes is explained.
Infrastructure Industry Training Organisation
SSB Code 101813
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
28195 version 1
Page 3 of 4
Outcome 2
Demonstrate knowledge of the processes required for restoring power to network plant
and equipment after the fault is cleared.
Evidence requirements
2.1
Processes for clearing fault indicators before power supply restoration is
explained.
Range
2.2
may include but is not limited to – relay flags, fault indicators,
SCADA indications.
Evidence of two required.
Processes for restoration of power supply to electricity supply industry safety
rules and network operating standards is explained.
Range
may include but is not limited to – network plant and equipment,
customer.
Evidence of two required.
Outcome 3
Demonstrate knowledge of information required for fault report documentation.
Evidence requirements
3.1
Work carried out for fault restoration.
Range
3.2
Risk of further trips, or faults are explained.
Range
3.3
may include but is not limited to – brief details of what was found,
repairs made, results of restoration, cause of tripping.
Evidence of two required.
may include but is not limited to – risk of further occurrence, other
vulnerable equipment, threat to continuity of supply.
Evidence of one required.
Maintenance required on network plant and equipment is given and reasons for
maintenance explained.
Range
may include but is not limited to – equipment defects, environment
concerns, pollution impact on equipment, condition monitoring
required.
Evidence of one required.
Replacement information
This unit standard replaced unit standard 16278.
Infrastructure Industry Training Organisation
SSB Code 101813
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
Planned review date
28195 version 1
Page 4 of 4
31 December 2018
Status information and last date for assessment for superseded versions
Process
Version Date
Last Date for Assessment
Registration
1
20 March 2014
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.
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 Infrastructure Industry Training Organisation at
qualifications@infrastructureito.org.nz if you wish to suggest changes to the content of this
unit standard.
Infrastructure Industry Training Organisation
SSB Code 101813
 New Zealand Qualifications Authority 2016