AG-238 Armature / Commutator Tester

AG-238 Armature / Commutator Tester – Diagnostic Accessory for Armature & Alternator Testing

The AG-238 Armature / Commutator Tester is a reliable diagnostic tool designed to work in conjunction with an Armature Growler. Built to measure current through its inbuilt AC ammeter, this tester enables accurate analysis of armatures and alternator stators during repair and rebuild operations.

Equipped with dual continuity test indicator lights (110V and 40V), this unit helps technicians identify shorts, open windings, or insulation breakdowns efficiently—making it an essential device in electrical workshops, motor rewind shops, and heavy equipment repair environments.

Key Features

Integrated AC Ammeter – Allows current measurement during testing of armatures and stators
Continuity Testing Lights – Built-in 110V and 40V indicator lamps detect faults during inspection
Compatible with Armature Growler – Works as a companion tool to growler units for enhanced fault detection
User-Friendly Operation – Simple control and output indicators streamline the testing process
Australian Workshop Ready – Built tough for frequent use in repair environments
Compact Design – Fits easily into existing test bench setups without occupying excess space

Benefits

Enhanced Motor and Alternator Diagnostics
This tester improves diagnostic accuracy when working with armatures, stators, and other rotating electrical components. It’s particularly valuable for identifying shorts and verifying winding integrity.

Works Seamlessly with Existing Growlers
Use this unit alongside your growler tester to measure actual current draw and confirm continuity—saving time and improving testing accuracy.

Visual Fault Indicators
The inclusion of 110V and 40V indicator lights allows you to perform continuity checks visually, adding a second layer of verification during electrical inspection.

Built for Technicians
Ideal for those specialising in electric motor rewinds, alternator repairs, or starter motor diagnostics. It helps reduce errors and improve service turnaround time.

Technical Specifications

• Input Voltage: Requires connection to an Armature Growler for operation

• Voltage Indicators: 110V and 40V built-in continuity lights

• Meter Type: AC Ammeter (built-in)

• Application: Tests armatures and alternator stators in electric motors, generators, and related equipment

• Testing Method: Visual fault indication and current readout

Physical and Dimensional Properties

• Unit Weight: Approximately 3.0 kg

• Dimensions:
  • Width: 310 mm

  • Length: 230 mm

  • Height: 310 mm

• Construction: Compact and durable for bench-top use

Ideal Applications

• Electric motor repair shops

• Automotive alternator and starter rebuilders

• Generator servicing and rewinds

• Heavy equipment electrical diagnostics

• Vocational training in motor control and rewinding

• Industrial maintenance workshops

How to Use the AG-238 Armature / Commutator Tester

1. Connect to Growler – Use the tester alongside a compatible Armature Growler for full functionality.

2. Position the Armature or Stator – Place the component securely for testing.

3. Check Continuity Lights – Observe the 110V and 40V lights for continuity indications.

4. Read Ammeter – Use the built-in AC ammeter to check current draw through the winding.

5. Interpret Results – Combine visual light cues and ammeter readings to identify open or short circuits.
   

Safety Tip: Ensure all equipment is de-energised before handling components. Use insulated gloves if required.

FAQs about AG-238 Armature / Commutator Tester

1. What does this unit test?
   It’s designed to test armatures and alternator stators by measuring continuity and current, especially when paired with a growler tester.
2. Can I use this as a standalone unit?
   It requires an Armature Growler to function correctly. It acts as a diagnostic accessory, not a stand-alone tester.
3. What do the indicator lights do?
   The 110V and 40V lights provide a quick visual confirmation of continuity or circuit faults, helping to identify issues like shorts or open windings.
4. Is this suitable for use in industrial settings?
   Yes, it is built for high-use environments like motor rewinding shops, automotive rebuild centres, and industrial workshops.
5. What type of ammeter is built-in?
   An AC ammeter is integrated into the unit to allow for real-time current readings during component testing.

Order the AG-238 Armature / Commutator Tester from Power Start

Improve your diagnostic capability with the AG-238 Armature / Commutator Tester—built for accuracy, simplicity, and dependable workshop performance. Whether you’re testing alternator stators or armatures, this tester ensures faults are found fast. Order now from Power Start and equip your bench with tools that work as hard as you do.

Note: Free shipping does not apply to very heavy items that require skids or pallets.

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