IS200EGDMH1A IS200EGDMH1AAB Exciter Ground Detector Module

Overview

Place of Origin:	USA
Brand Name:	GE
Model Number:	IS200EGDMH1A IS200EGDMH1AAB
Packaging Details:	Original new Factory Sealed
Delivery Time:	5-7 days
Payment Terms:	T/T
Supply Ability:	In stock

Specifications

Description

IS200EGDMH1A IS200EGDMH1AAB is an Exciter Ground Detector Module developed by GE. It is a part of the EX2100 excitation system. The Ground Detection Module serves as an integral component within the EX2100 Excitation Control system, designed to ensure the reliability and safety of generator field circuits by detecting potential ground faults. This module adopts a double slot, double height (6U) form factor, fitting into the Exciter Power Backplane rack (EPBP) as part of the system's architecture. Its integration into the system's architecture, along with its collaboration with the EXAM module, contributes significantly to the system's ability to promptly identify and address ground fault issues, thereby enhancing operational safety and reliability within generator systems.

Applications

Thermal and nuclear power plants: In the GE EX2100/EX2100e excitation system, prevent one- or two-point grounding accidents caused by rotor winding insulation damage.

Hydropower plants: Real-time monitoring of generator rotor insulation performance in high humidity environments.

Large industrial power plants: Excitation protection for large-capacity synchronous motors in the steel and chemical industries.

Fiber-optic connectors

1 Fiber-Optic Connectors: Fiber-optic connectors play a crucial role in ensuring the transmission of signals within systems, especially in scenarios where reliability, high data rates, and minimal signal interference are paramount. Within the context of the EGDM (Ground Detection Module), two distinct fiber-optic connectors, U201 and U305, facilitate signal transmission between the module and the EISB (Excitation ISB) board.

2 Lower Fiber-Optic Connector (U201): U201 serves as the connector responsible for carrying the oscillator signal from the EISB board to the Ground Detection Module. This connector utilizes a Hewlett Packard HFBR2528 receive connector, specifically designed to receive optical signals reliably. The HFBR2528 receive connector ensures efficient reception of the oscillator signal, providing a robust link for the transmission of this specific signal from the EISB board to the EGDM module.

3 Upper Fiber-Optic Connector (U305): U305 functions as the connector responsible for sending the sense resistor signal from the EGDM module to the EISB board. This connector employs a Hewlett Packard HFBR1528 transmit connector, specially designed for transmitting optical signals. The HFBR1528 transmit connector ensures efficient and reliable transmission of the sense resistor signal, completing the bidirectional communication between the EGDM module and the EISB board.

Features

1 Field Ground Detection: The primary function of the module is to detect field leakage resistance between any point in the generator field circuit and ground. This detection capability covers both the alternating current (AC) and direct current (DC) sides of the circuit, aiming to identify any abnormal leakage that could potentially pose a safety hazard or compromise system integrity.

2 System Configuration: In a simplex system configuration, a single EGDM module is utilized for ground detection. However, in a redundant system setup aimed at enhancing reliability, three EGDM modules are employed, further ensuring robust ground fault detection capabilities across the generator field circuit.

3 Module Location: The location within the system is indicated in Figure 1, likely outlining their placement within the system's rack or chassis for optimized functionality and accessibility during operation and maintenance.

4 EXAM Module Interaction: The Ground Detection Module collaborates with the EXAM (EXcitation AMplifier) module, which functions as an attenuator sensing the voltage across the ground sense resistor. This voltage signal is transmitted using a specialized nine-conductor cable. The EXAM module itself is housed within the High Voltage Module situated in the Auxiliary Panel.

Frequently Asked Questions