19950 Use Test Instruments and Carry out Electrical Testing in the Electricity Supply Industry

NZQA registered unit standard 19950 version 4 Page 1 of 4

Title Use test instruments and carry out electrical testing in the electricity supply industry

Level 3 Credits 3

Purpose This unit standard is for persons who are required to make basic electrical measurements of voltage, current, resistance, continuity, polarity, phasing, rotation, earth resistance and insulation resistance.

People credited with this unit standard are able to: demonstrate knowledge of electrical test instruments; and take electrical measurements and indications.

Classification Electricity Supply > Electricity Supply - Core Skills

Available grade Achieved

Entry information

Recommended skills Unit 18274, Demonstrate knowledge of electricity supply and knowledge networks, 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 a priority throughout the assessment. If the safety requirements are not met the assessment must stop and the candidate will be assessed as not yet competent.

3 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

Infrastructure Industry Training Organisation Ó New Zealand Qualifications Authority 2018 SSB Code 101813 NZQA registered unit standard 19950 version 4 Page 2 of 4

HAMILTON.

4 The phrase in accordance with industry requirements is implicit in all outcomes and evidence requirements in this unit standard.

5 Definitions 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. 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.

6 Evidence for this unit standard can be based around the use of electrical test instruments in distribution and transmission networks by Cable Jointers, Line Mechanic Distribution and Line Mechanic Transmission.

7 Assessment of practical skills against the outcomes in this standard requires three practical observations from three different workplace activities, one of which may be conducted in a simulated electricity supply environment.

Outcomes and evidence requirements

Outcome 1

Demonstrate knowledge of the use of electrical test instruments.

Range may include but is not limited to – voltmeter, ammeter, ohmmeter, multimeter, clip-on ammeter, insulation tester, phase rotation meter, earth resistance tester, high voltage (HV) proximity voltage detectors, earthing loop impedance tester, ground earth resistance tester. Instruments may be analogue or digital; evidence of four is required.

Evidence requirements

1.1 The types of test instruments used and their function within the electricity supply industry are described.

1.2 The different electrical categories of test instruments are listed and described.

Range I, II, III, IV.

1.3 The types of measurements taken by test instruments are physically identified and described.

Range low voltage (LV) and HV voltage measurements, current, resistance, insulation resistance, earth resistance, loop impedance, rotation, continuity, phasing and polarity (LV and HV).

1.4 Consequences of incorrect use of test instruments are described in terms of polarity reversal, use of wrong instrument, incorrect connection to the circuit, incorrect selection of function or range.

1.5 Test instruments are set up and their connections to circuit under test are sketched.

Outcome 2

Take electrical measurements and indications.

Range voltage, current, resistance, insulation resistance, earth resistance, loop resistance, rotation, phasing and polarity, instrument category; evidence of three different types of measurements with different instruments is required.

Evidence requirements

2.1 Test instrument is selected to match the type of measurement or indication required.

2.2 Test instrument is visually inspected for safety prior to testing.

Range may include but is not limited to, instrument condition, open circuit fuse in fused lead, broken test lead, open circuit test lead; evidence of inspection prior to use for each test measurement is required.

2.3 Instrument is set for measurement by selection of function and range.

2.4 The ‘prove-test-prove’ method is demonstrated during testing.

2.5 Measurements are taken.

2.6 The results are recorded and analysed for validity.

Planned review date 31 December 2018

Status information and last date for assessment for superseded versions Process Version Date Last Date for Assessment Registration 1 26 July 2003 31 December 2016 Rollover and 2 25 October 2007 31 December 2016 Revision Review 3 19 November 2010 31 December 2016 Review 4 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 [email protected] if you wish to suggest changes to the content of this unit standard.

Infrastructure Industry Training Organisation Ó New Zealand Qualifications Authority 2018 SSB Code 101813