1184 Test, and Locate and Diagnose Faults in Electrical Machine Windings

NZQA registered unit standard 1184 version 9 Page 1 of 3

Title Test, and locate and diagnose faults in electrical machine windings

Level 3 Credits 2

Purpose People credited with this unit standard are able to: – test electrical machine windings; and – locate and diagnose faults in electrical machine windings.

Classification Electrical Engineering > Electrical Machines

Available grade Achieved

Explanatory notes

1 This unit standard has been developed for learning and assessment on-job or off-job in a simulated environment.

2 Definitions Electrical machines – are defined as electric motors, generators, alternators, and transformers. Industry practice – those practices that competent practitioners within the industry recognise as current industry best practice.

3 This unit standard is one of a series designed to cover the rewinding of electric machines normally removed to a motor rewinding workshop. The unit standards and the sequence are as follows: Unit 1184, Test, and locate and diagnose faults in electrical machine windings Unit 1185, Prepare electrical machines for rewinding Unit 19470, Rewind electric machines Unit 19471, Reassemble and test electric machines following rewinding.

Reinstallation and commissioning are covered in: Unit 2014, Overhaul a.c. rotating machines and control equipment Unit 5928, Overhaul d.c. rotating machines and control equipment.

4 Assessment The number and type of machines chosen are left to the discretion of the assessor, but must be sufficient to assess competence in all outcomes of the unit standard.

Outcomes and evidence requirements

Outcome 1

Test electrical machine windings.

The Skills Organisation Ó New Zealand Qualifications Authority 2018 SSB Code 100401 NZQA registered unit standard 1184 version 9 Page 2 of 3

Evidence requirements

1.1 Tests are carried out in accordance with industry practice.

Range tests – continuity of supply conductors, insulation resistance between windings and earth, resistance of windings; growler test on machines containing armatures.

1.2 Results of tests are recorded in accordance with company requirements.

Outcome 2

Locate and diagnose faults in electrical machine windings.

Range faults – open circuit, short circuit, leakage to earth, differences in readings between windings. Assessment must involve at least one of each type of fault, real or simulated.

Evidence requirements

2.1 Test results are interpreted and faults located in accordance with industry practice.

2.2 Likely cause of fault is diagnosed from test results and visual inspection.

2.3 The machines are tagged and documentation completed in accordance with company requirements.

Planned review date 31 December 2014

Status information and last date for assessment for superseded versions Process Version Date Last Date for Assessment Registration 1 29 April 1994 31 December 2013 Review 2 23 April 1996 31 December 2013 Review 3 10 February 1999 31 December 2013 Revision 4 3 April 2001 31 December 2013 Review 5 26 May 2005 31 December 2013 Review 6 22 August 2008 31 December 2013 Revision 7 16 April 2010 N/A Rollover and 8 15 March 2012 N/A Revision Revision 9 15 January 2014 N/A

Consent and Moderation Requirements (CMR) reference 0003

The Skills Organisation Ó New Zealand Qualifications Authority 2018 SSB Code 100401 NZQA registered unit standard 1184 version 9 Page 3 of 3

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 Skills Organisation [email protected] if you wish to suggest changes to the content of this unit standard.

The Skills Organisation Ó New Zealand Qualifications Authority 2018 SSB Code 100401