Armature tester for electric motors.

AIP shares with you the" Armature tester for electric motors.".

September 26, 2023

Armature tester for electric motors

Ⅰ.What is a motor armature tester and what does it do?

AIP armature tester

The motor armature tester, also known as the motor armature test equipment or armature analyzer, is a device specially used to detect and analyze the motor armature. The armature is a key component of the motor, and its normal operation has an important impact on the efficiency of the motor. and performance is critical. It can measure the welding resistance, bar-to-bar resistance, diagonal resistance, AC hi-pot, insulation resistance, surge, and other parameters of the armature. The motor armature tester can help users determine whether the motor is working properly and whether it is faulty or damaged.

Ⅱ.Why use a motor armature tester?

The motor is a device widely used in industry, agriculture, transportation, household, and other fields. It converts electrical energy into mechanical energy and drives various mechanical movements. The armature is one of the core components of the motor. It is a rotating conductor coil that generates induced electromotive force and induced current by cutting magnetic lines of force. The condition and performance of the armature directly affect the efficiency and life of the motor.


The armature will be affected by various factors during its working process, such as temperature, humidity, vibration, wear, oxidation, etc., resulting in changes or abnormalities in its parameters and performance. If the condition of the armature is not detected and analyzed in time, it may cause motor failure or damage, or even cause a safety accident. Therefore, using a motor armature tester to conduct regular or irregular testing and analysis of the armature is an important measure to ensure the normal operation of the motor and extend its service life.

Ⅲ.What items does the armature tester test?

The current test items of the AIP armature tester are as follows:

AIP armature tester test interface      AIP armature tester test interface

■ Welding resistance: Test the resistance value of the welding point between the commutator segment and the winding to determine whether the welding quality is good and whether there is weak welding or poor welding.

■ Bar-to-bar resistance: This test can identify any problems with the armature bar connections and can also find problems such as loose connections or broken iron bars.

■ Diagonal resistance: Test the resistance value of the coil between two commutators separated by 180° to determine whether the coil is open or has poor contact.

■ Insulation resistance: The insulation resistance test checks the insulation quality between different windings or between the windings and the armature core. A drop in insulation resistance may indicate insulation breakdown and potential motor failure.

■ AC Hi-pot: Test the AC Hi-pot of the winding to iron core, commutator to iron core, commutator to winding, and other parts to determine whether the insulation performance is good and whether there is a surge short circuit or poor insulation.

■ Surge: The surge test is a high-voltage test used to detect surge short circuits, inter-coil short circuits, and other insulation problems within the armature winding. It applies high-voltage pulses to the windings and measures the response, helping to identify problems that may not be apparent in low-voltage testing.

Ⅳ. How to use the motor armature tester?

Different types and specifications of motor armature testers may have different usage methods and steps, but generally speaking, the following basic principles need to be followed:

■ Before use, you should read and understand the instruction manual of the tester and become familiar with its functions, operating methods, precautions, etc.

■ Before use, consult AIP Company for precautions on the use of other equipment.

■ When using it, you should follow the tester's prompts or instructions to correctly connect the tester and the object under test, and select appropriate test items and parameters.

■ After use, the connection between the tester and the object under test should be promptly disconnected, and the power supply switch of the tester should be turned off.

■ After use, the tester should be properly stored in a cool, dry place and cleaned and maintained regularly.

The specific features and capabilities of an armature tester can vary widely depending on the manufacturer and model. When choosing an armature tester, you must consider the type of testing required for your application and compatibility with the type of motor you use. AIP focuses on global motor testing and provides customers with customized motor armature testing solutions. If you need a motor armature tester, you can contact us via Tel/Whatsapp: +86-13969776659, or E-mail:, and we will solve your armature testing problems!