DS3820PMMB - Field Exciter Motor Module

SPECIFICATIONS

Part Number: DS3820PMMB
Manufacturer: General Electric
Series: Mark IV
Product Type: Field Exciter Motor Module
Power Requirements: +5 V dc, 7A
Number of relay channels: 12
Power supply voltage: 24 V dc
Operating temperature: -40 to +65 degrees Celsius
Size: 15.9 cm high x 19.7 cm
Weight: 0.8kg
Repair: 3-7 Day
Availability: In Stock
Country of Manufacture: United States (USA)

Functional Description

DS3820PMMB is a Field Exciter Motor Module manufactured and designed by General Electrics. It is a part of the Mark IV Series used in GE Speedtronic Gas Turbine Control Systems. The Field Exciter Motor Module is an important component of the control system in gas turbine power plants. The FEMM is responsible for providing power to the exciter field winding, which in turn generates the magnetic field required for the generation of electricity in the generator. The FEMM is typically a small DC motor that is connected to the exciter field winding. When the gas turbine is started, the FEMM is energized, which generates a magnetic field in the exciter. This magnetic field induces an electromotive force in the stator windings of the generator, which then generates electricity.

The component is controlled by the gas turbine's control system, which regulates the voltage and current supplied to the FEMM. The control system uses feedback from the generator to ensure that the module is operating at the correct speed and providing the correct amount of power to the exciter field winding. Overall, the FE motor module plays a critical role in the efficient operation of gas turbine power plants, as it ensures that the generator is generating the correct amount of electricity at all times.

System Features

• Microprocessor and electrohydraulic technology are used in the Mark IV control system. Several Intel 8086 and 80286 microprocessor-based processors (microcomputers) compute the analog and logic signals required for the gas turbine's control, protection, and sequencing. Sensors mounted on turbines monitor operating conditions.
• The Mark IV panel's hardware converts the analog and logic signals from these sensors into digital data for the processors to process.
• These computations are defined by software (i.e., computer programs). The hardware then converts the digital outputs of these computations into physical analog and logic signals that are used to activate devices. In general, analog signals control servovalves, while logic signals activate relays.
• The R, S, T control system of the Mark IV controllers uses multiple processors and modularized sensors to provide a tenfold increase in fault system over integrated circuit control systems.

Characteristics

A field exciter motor module is a component that is used in electric motors to control the excitation of the field windings. Some of the key features of a field exciter motor module may include:

• Control of Field Winding Excitation: The main function of a field exciter motor module is to regulate the excitation of the field winding in an electric motor. This is done by controlling the amount of current that is supplied to the field winding.
• High Efficiency: Field exciter motor modules are designed to be highly efficient, which means that they waste very little energy during operation. This is important because it helps to reduce energy consumption and lower operating costs.
• Compact Design: Field exciter motor modules are typically designed to be compact and easy to install. This makes them ideal for use in a wide range of motor applications, including industrial machinery, transportation systems, and renewable energy systems.
• Variable Speed Control: Many field exciter motor modules are designed to provide variable speed control for electric motors. This allows for precise control over the speed of the motor, which can be important in applications where speed needs to be adjusted based on changing conditions.
• Reliable Performance: Field exciter motor modules are built to be durable and reliable, even in harsh operating environments. They are often equipped with features such as overload protection and temperature sensing to help ensure safe and reliable operation.

WOC is happy to assist you with any of your GE requirements. Please contact us by phone or email for pricing and availability on any parts and repairs.

FREQUENTLY ASKED QUESTIONS

 

What is DS3820PMMB?
It is a Field Exciter Motor Module manufactured and designed by General Electrics.

What is a field exciter motor module?
A field exciter motor module is a component used in electric motors to control the excitation of the field windings.

How does a field exciter motor module work?
A field exciter motor module regulates the amount of current that is supplied to the field winding in an electric motor, thereby controlling the excitation of the field winding.

What are some benefits of using a field exciter motor module?
The benefits of using a field exciter motor module include high efficiency, compact design, variable speed control, and reliable performance.

What is used to manage collective heat?
A heat sink has been added to the housing to manage collective heat coming off the many components.

What kind of connectors are used?
Most boards have some kind of header connector and/or PCB mating connector for the use of ribbon connector or wiring.