GE IS200EXHSG1AEB Exciter High Speed Relay Board

GE IS200EXHSG1AEB Exciter High Speed Relay Board

د.إ8,888.00

GE IS200EXHSG1AEB Exciter High-Speed Relay Driver Board (commonly called the EXHS board) is a critical component in the GE EX2100 Excitation Control System for large industrial generators (turbines).1

The primary function of this board is to provide the high-speed relay driving capability necessary for the protection and control of the generator’s field winding.2

⚡ Core Functions and Features

The EXHS board acts as the interface between the low-voltage control signals from the main controller and the high-power switching components of the exciter system.

Function Components Driven/Controlled Importance
Field Flashing Pilot Relays for Field Flashing Relays (53A and 53B) Controls the initial application of voltage to establish the generator’s magnetic field.
De-Excitation Pilot Relay for the De-Excitation Relay (KDEP) Essential for quickly and safely collapsing the generator’s magnetic field during a trip or shutdown to protect the machine from damage (e.g., overvoltage).
Contactor Control Drivers for DC Contactors (41) Manages the main power contactors that connect the exciter output to the generator field.
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The GE IS200EXHSG1AEB Exciter High-Speed Relay Driver Board (commonly called the EXHS board) is a critical component in the GE EX2100 Excitation Control System for large industrial generators (turbines).1

The primary function of this board is to provide the high-speed relay driving capability necessary for the protection and control of the generator’s field winding.2

⚡ Core Functions and Features

The EXHS board acts as the interface between the low-voltage control signals from the main controller and the high-power switching components of the exciter system.

Function Components Driven/Controlled Importance
Field Flashing Pilot Relays for Field Flashing Relays (53A and 53B) Controls the initial application of voltage to establish the generator’s magnetic field.
De-Excitation Pilot Relay for the De-Excitation Relay (KDEP) Essential for quickly and safely collapsing the generator’s magnetic field during a trip or shutdown to protect the machine from damage (e.g., overvoltage).
Contactor Control Drivers for DC Contactors (41) Manages the main power contactors that connect the exciter output to the generator field.
System Interface Status signal conditioning for EMIO boards Conditions and sends feedback status signals (from 41, 53A, 53B, and crowbar circuits) back to the Exciter Main Input/Output (EMIO) boards for monitoring and analysis by the main controller.
Contact Wetting Provides a 70 VDC supply Powers the contacts (41, 53A, 53B) to “wet” them, ensuring reliable contact closure feedback for accurate monitoring.

⚙️ Technical Details (IS200EXHSG1AEB)

  • System: EX2100 Excitation Control System.3
  • Controller Type: The ‘G1’ in the part number indicates it is typically used in redundant control (TMR) setups, connecting to the M1, M2, and C (or C1, C2, C3) controllers via the EMIO boards.4
  • Connectivity: It connects to the EMIO boards via the Exciter Backplane Board (EBKP) using ribbon cables.5
  • Reliability: In a redundant system, the commands and feedback signals are often implemented in a 2-out-of-3 voting circuit to enhance reliability and prevent false trips.6
  • Suffix/Revision: The ‘AEB’ suffix denotes a specific manufacturing revision and configuration of the board within the product lifecycle, often indicating minor component or feature updates compared to earlier revisions (like ‘AAA’ or ‘A’).

The board’s “High-Speed” designation underscores its function in crucial protective relays that must operate in milliseconds to ensure generator integrity and grid stability.7

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