GE IS200TRELH1A Emergency Trip Board

GE IS200TRELH1A Emergency Trip Board

Part Number IS200TRELH1A Manufacturer General Electric Country of Manufacture As Per GE Manufacturing Policy Series Mark VI/VIe Function Module Availability In StockIS200TRELH1A is an emergency trip board developed by GE. It is a part of Mark VI control system. It operates in conjunction with the I/O controller within the protection module to execute specific functions vital for turbine safety. TREL serves as a crucial safety mechanism in large steam turbines, specifically dedicated to emergency overspeed protection through its interaction with the I/O controller and control of trip solenoids. 

Its specialized design in TMR form, devoid of certain features present in other relays like TREG, underscores its focus on emergency functionalities and safety protocols. Additionally, its expandability with multiple boards further emphasizes the importance of redundancy in critical turbine safety systems. CONTROL MECHANISM TREL is under the command of the I/O controller, responsible for administering power to three essential emergency trip solenoids. 

These solenoids are connectable between the TREL and TRPL terminal boards. TREL supplies the positive side of the 125 V dc to the solenoids, while TRPL provides the negative side. FEATURES AND CHARACTERISTICS TMR Configuration Exclusive: TREL is solely available in Triple Modular Redundancy (TMR) form, emphasizing redundancy and reliability in its operational setup. 

Absence of Economizing Relay: Unlike its counterpart, TREG, TREL lacks an economizing relay, perhaps to streamline its functionality towards emergency protection without additional economizing features. No E-STOP Function: In contrast to TREG, TREL does not incorporate an E-STOP function, potentially due to its specialized focus on emergency overspeed protection. Multiple TREL Boards: The I/O controller possesses the capability to drive a secondary TREL board, enhancing redundancy or extending control over additional components for heightened safety measures.

Functional Description

IS200TRELH1A is an emergency trip board developed by GE. It is a part of Mark VI control system. It operates in conjunction with the I/O controller within the protection module to execute specific functions vital for turbine safety. TREL serves as a crucial safety mechanism in large steam turbines, specifically dedicated to emergency overspeed protection through its interaction with the I/O controller and control of trip solenoids. Its specialized design in TMR form, devoid of certain features present in other relays like TREG, underscores its focus on emergency functionalities and safety protocols. Additionally, its expandability with multiple boards further emphasizes the importance of redundancy in critical turbine safety systems.

Control Mechanism

TREL is under the command of the I/O controller, responsible for administering power to three essential emergency trip solenoids. These solenoids are connectable between the

TREL and TRPL terminal boards. TREL supplies the positive side of the 125 V dc to the solenoids, while TRPL provides the negative side.

Features and Characteristics

TMR Configuration Exclusive: TREL is solely available in Triple Modular Redundancy (TMR) form, emphasizing redundancy and reliability in its operational setup.

Absence of Economizing Relay: Unlike its counterpart, TREG, TREL lacks an economizing relay, perhaps to streamline its functionality towards emergency protection without additional economizing features.

No E-STOP Function: In contrast to TREG, TREL does not incorporate an E-STOP function, potentially due to its specialized focus on emergency overspeed protection.

Multiple TREL Boards: The I/O controller possesses the capability to drive a secondary TREL board, enhancing redundancy or extending control over additional components for heightened safety measures.

Installation Process

Trip Solenoids Wiring

Terminal Block Connection: The installation of the three trip solenoids involves their wiring to the first I/O terminal block. This block acts as the primary interface for these solenoids, facilitating their connection to the control system.

Specific Arrangement: Detailed wiring configurations for these solenoids are outlined in the provided figure, ensuring accurate and precise connections to enable proper functionality within the system.

Trip Interlocks Integration

Secondary Terminal Block Usage: Another critical aspect of the installation process involves integrating up to seven trip interlocks, which are connected to the second terminal block. These interlocks serve as additional safety measures within the system, enhancing the overall safety protocol.

Wiring Arrangement: The wiring connections for these interlocks, conveying essential trip-related information, are specifically delineated in the provided documentation. They are designed to ensure efficient communication and response to potential trip scenarios.

Connector Details

Connector J2: This component plays a pivotal role by carrying three power buses sourced from the TRPL (Terminal Relay Positive Line) system. These power buses are instrumental in providing the necessary electrical supply and support to the connected components.

Connector JH1: Carrying the excitation voltage for the seven trip interlocks, JH1 acts as a conduit for supplying the required excitation voltage. This voltage is crucial for the proper functioning and activation of the interlocks, reinforcing the safety mechanisms in place.

Key Considerations

Precision and Adherence to Diagrams: The wiring connections highlighted in the provided figure must be followed meticulously to ensure accurate installation and proper functionality of the trip solenoids and interlocks.

System Integrity and Safety: Proper installation and connection of these components are critical for maintaining the integrity and effectiveness of the emergency overspeed protection system. Adherence to recommended guidelines and wiring configurations is essential to guaranteeing the system's safety and reliability.