IS200EDEXG1AFA Exciter De-Excitation board

Overview

Place of Origin:	USA
Brand Name:	GE
Model Number:	IS200EDEXG1AFA
Packaging Details:	Original new Factory Sealed
Delivery Time:	5-7 days
Payment Terms:	T/T
Supply Ability:	In stock

Quick Detail

Description

IS200EDEXG1AFA is an Exciter De-Excitation Board manufactured by General Electric as a part of the EX2100 series used in Excitation control systems.IS20OEDEXG1A serves as the primary PCB in an EX2100 De-Excitation Module, allowing conduction sensing feedback, voltage retention during power outages, and de-excitation firing.The EPSM module, which converts 125VDC to 24VDC, provides power to the board.In the de-excitation module, the EDEX board is the main board.To assure operation in the event of a power outage, EDEX provides de-excitation SCR firing, conduction sense feedback, and voltage retention.On the EXTB board, EMlO initiates de-excitation.The EXTB board opens the 41 DC contractor (41A/41B) or breaker, then passes the excitation signals from the auxiliary contacts to the EDEX's SCRfiring circuits.EDEX is divided into two categories.The Group 1 board is for SCR de-excitation, while the Group 2 board is for diode de-excitation.EDEX is usually controlled by EXTB but can initiate de-excitation if control fails.

Applications

Thermal and Hydropower Plants

Application Scenarios: Installed in the excitation cabinet of gas turbines or steam turbines. When a grid failure occurs or the unit requires emergency shutdown, this board initiates the demagnetization procedure to ensure the safe release of energy from the generator rotor.

Key Function: Prevents insulation breakdown caused by extremely high voltage generated by residual magnetism in an open-circuit state.

Steel and Metallurgical Plants

Application Scenarios: Large steel plants typically have their own power plants or use heavy-duty synchronous motors to drive rolling mills. The IS200EDEXG1AFA is used to manage the excitation systems of these high-capacity units.

Industry Background: Due to the extremely high requirements for power stability in steel production, the reliability of the EX2100 system (such as support for redundant configurations) makes it the standard choice in this industry.

Oil, Petrochemical, and Liquefied Natural Gas (LNG) Facilities

Application Scenarios: In petrochemical complexes, this board is used to control the turbine generators driving large compressors or pump sets.

Plant Value: In environments with flammable and explosive risks, precise demagnetization control is crucial to prevent electrical sparks or equipment overheating.

Large Ships and Marine Engineering

Application Scenarios: Used for ship propulsion systems employing all-electric propulsion or turbine power generation to ensure the safety of offshore power grids under complex load fluctuations.

FREQUENTLY ASKED QUESTIONS

Q: What is GE EX2100 IS200EDEXG1AFA?
A: IS200EDEXG1AFA is a De-Excitation Module Main Board used in the GE EX2100 excitation control system. It is responsible for managing de-excitation functions, ensuring safe shutdown and protection of the generator during fault or trip conditions.

Q: What is excitation in control systems for IS200EDEXG1AFA?
A: Excitation refers to the process of supplying current to the rotor field windings of a synchronous generator. This enables control of generator output voltage and reactive power, while also supporting protection functions within the excitation control system.

Q: Why is DC utilized as a source of excitation for IS200EDEXG1AFA?
A: DC is used because it creates a stable and constant magnetic field in the rotor windings. This steady magnetic field is essential for proper operation of the synchronous generator and ensures consistent voltage generation and control.