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Description：

The IS200ERDDH1A model is part of the EX2100 series and is an Exciter Regulator Dynamics Discharge Board. The ERDD model has two operating modes, simplex and redundant. Each application mode is used differently as well as mounted differently. 

When the IS200ERDDH1A is being used in simplex mode the model controls the K3 charging relay; when the board is being used in the redundant mode it will control the K41 de-excitation relay. The mounting places of the ERDD mode when operating in simplex and redundant mode are different, when in simplex mode the IS200ERDDH1A is mounted in the ERBP backplane and when in redundant mode two ERDD models must be used, one is mounted in the same location as the model in simplex mode and the other board will be mounted in the ERRB backplane. 

Specification：

Frequently asked questions

Q1: What is the GE IS200ERDDH1A used for?

A: The IS200ERDDH1A is a Dynamic Discharge Board used in the GE EX2100 excitation control system.  

Q2: How many I/O points does the IS200ERDDH1A provide?

A: The IS200ERDDH1A module provides 8 I/O points, enabling reliable communication and signal processing within the excitation control system.

Q3: How many input channels are available?

A: The IS200ERDDH1A features 16 input channels, supporting multiple monitoring and control signals for turbine excitation applications.

Q4: What power supply is required for the IS200ERDDH1A?

A: The IS200ERDDH1A module operates with a 24 VDC power supply, ensuring stable performance in industrial control environments.

Product Applications

Thermal and Gas-Fired Power Plants: As the core of the excitation regulation system for large steam turbine and gas turbine generator sets, it controls the generator rotor excitation current to maintain grid voltage stability.

Hydropower Stations: In the excitation system of hydroelectric generator sets, it controls the reactive power of the generators and handles the risk of instantaneous overvoltage caused by fluctuations in hydraulic load.

Large Petrochemical and Refinery Plants: Used for frequency conversion and excitation control of high-energy-consuming compressors and large pump drive motors to prevent unplanned production line shutdowns due to grid fluctuations.

Heavy Steel and Metallurgical Plants: In the motor drive systems (IGBT converters) of high-power, high-impact loads such as rolling mills, it is responsible for handling the reverse energy generated by frequent braking and providing dynamic discharge protection.

Large Paper and Cement Plants: Applied to the excitation control of internal power plants or large high-voltage synchronous motors to ensure the power stability of continuous production lines.