NZQA Expiring unit standard / 24107 version 2
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Title / Demonstrate knowledge of an automotive charging system that uses a direct current (dc) generator
Level / 3 / Credits / 2
Purpose / This theory-based unit standard is for peoplein the automotive electrical repair industry. People credited with this unit standard areable to demonstrate knowledge of an automotivecharging system that uses a dc generator.
Classification / Motor Industry > Automotive Electrical and Electronics
Available grade / Achieved

Guidance Information

1Legislation relevant to this unit standard includes but is not limited to – Land Transport Rule: Vehicle Repair 1998, Rule 34001.

2Land Transport Rules are produced for the Minister of Transport by Land Transport New Zealand. These rules are available online at

3Definition

Service information may include but is not limited to – technical information of a vehicle, machine, or product detailing operation; installation and servicing procedures; manufacturer instructions and specifications; technical terms and descriptions; and detailed illustrations. This can be accessed in hard copy or electronic format and is normally sourced from the manufacturer.

Outcomes and performance criteria

Outcome 1

Demonstrate knowledge of an automotive charging system that uses a dc generator.

Performance criteria

1.1The circuit layout of an automotive charging system which uses a generator is described in accordance with manufacturer circuit descriptions. The function of each part is defined in accordance with manufacturer specifications.

1.2The construction of a generator and its parts is described in accordance with manufacturer specifications.

1.3The way in which a generator produces and rectifies a voltage is identified in accordance with manufacturer specifications.

1.4Methods of controlling the output of the generator are identified in accordance with manufacturer specifications.

Rangecurrent and voltage regulation.

1.5Procedures for testing an automotive charging system that uses a dc generator are described in accordance with service information.

Rangeincludes but is not limited to – battery, connectors, wires, regulator, warning light.

1.6Procedures for testing the generator components are described in accordance with service information.

Rangeincludes but is not limited to – mechanical components – case, shaft, brushes and holders, commutator, bushes, pole shoes, armature core, wear, damage;

electrical components – armature and field windings, commutator, brushes and holders.

1.7Repair and adjustment procedures to the generator are described in accordance with service information.

Rangereplace, repair;

voltage and current regulator adjustment, cut-out adjustment.

Replacement information / This unit standard and unit standard 24108 replaced unit standard 904.

This unit standard is expiring. Assessment against the standard must take place by the last date for assessment set out below.

Status information and last date for assessment for superseded versions

Process / Version / Date / Last Date for Assessment
Registration / 1 / 25 January 2008 / 31 December 2020
Review / 2 / 26 April 2018 / 31 December 2020
Consent and Moderation Requirements (CMR) reference / 0014

This CMR can be accessed at

MITO New Zealand Incorporated
SSB Code 101542 / New Zealand Qualifications Authority 2018