AL-E452 DC COMPOUND MOTOR (CUT SECTION MOTOR)

Description

AL-E452 DC COMPOUND MOTOR (CUT SECTION MOTOR)

AL-E452 – DC Compound Motor (Cut Section)

Product Code: AL-E452

Product Category: Electrical Machines Laboratory Training Equipment

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Application: Study of DC compound motor construction, winding connections, operating principles, and electrical machine components.

1. Detailed Technical Specifications

2. Constructional Features

• Yoke: Provides mechanical support and serves as the magnetic return path.
• Main poles and field windings: Establish the magnetic field required for motor operation.
• Series field winding: Connected in series with the armature circuit to provide a load-dependent magnetic field component.
• Shunt field winding: Connected in parallel with the supply or armature circuit according to the selected compound connection.
• Armature core: Laminated magnetic core designed to reduce eddy-current losses.
• Armature winding: Carries current and interacts with the magnetic field to develop torque.
• Commutator: Maintains unidirectional torque by reversing current in the appropriate armature conductors.
• Brush assembly: Provides electrical contact between the stationary external circuit and rotating commutator.
• Single shaft: Provides the mechanical output arrangement.
• Cut-section construction: Allows students to observe internal motor components without dismantling the complete machine.
• Metal mounting base: Provides stability during laboratory demonstrations.

3. Experiments and Learning Objectives

The AL-E452 DC Compound Motor is suitable for the following laboratory activities:

1. Study of DC compound motor construction and operation.
2. Identification of the yoke, poles, armature, commutator, and brushes.
3. Study of series and shunt field winding arrangements.
4. Understanding cumulative and differential compounding.
5. Study of the torque characteristics of a DC compound motor.
6. Observation of internal electrical and mechanical components.
7. Study of the relationship between armature current, field flux, torque, and speed.
8. Comparison of DC shunt, series, and compound motor characteristics.
9. Study of terminal identification and winding connection diagrams.

4. Working Principle

A DC compound motor combines series and shunt field windings. When DC power is applied, the field windings establish magnetic flux, while current flowing through the armature conductors produces electromagnetic torque.

The series field flux varies with armature current, while the shunt field provides a comparatively stable flux. Depending on the polarity and connection of the two field windings, the motor can operate with cumulative or differential compounding.

The developed torque is approximately expressed as:

5. Educational Benefits

• Provides a clear visual understanding of DC compound motor construction.
• Helps students identify individual motor components and their functions.
• Supports practical demonstrations of series and shunt field connections.
• Facilitates comparison of different DC motor characteristics.
• Suitable for electrical engineering laboratories, polytechnics, engineering colleges, and technical training institutes.

6. General Requirements

• Robust construction suitable for repeated educational use.
• Clearly visible internal components through cutaway sections.
• Clearly identifiable terminals for field and armature connections.
• Secure mounting on a rigid metal base.
• Suitable for supervised laboratory demonstrations.
• Appropriate electrical protection and safe connection arrangements for 230 V DC operation.

Technical verification note: The specified 230 V DC supply, 1 HP rating, 1440 RPM speed, and five-terminal arrangement should be verified against the manufacturer's nameplate and wiring diagram. The designations SPDP, 1P23, and 1C01 have been retained or interpreted as supplied; confirm the exact enclosure, IP protection, and cooling classifications before submitting this specification as part of a formal tender.

Technical Details