IS200TREGH1AAA - Turbine Emergency Trip Board

SPECIFICATIONS

Part No.: IS200TREGH1AAA
Manufacturer: General Electric
Country of Manufacture: United States of America (USA)
Trip interlock isolation: Optical isolation to 1500 V
Trip interlock filter: Hardware filter, 4 ms
Size: 17.8 cm wide x 33.02 cm, high
Technology: Surface-mount
Product Type: Turbine Emergency Trip board
Availability: In Stock
Series: Mark VIe

Functional Description

IS200TREGH1AAA is a turbine emergency trip board developed by GE. It is a part of Mark VIe control system. The Board provides power to emergency trip solenoids and facilitates their control. It serves as the power source for three emergency trip solenoids, ensuring they receive the necessary electrical supply for their operation. The system allows for the connection of up to three trip solenoids between the TREG and the TRPG (Trip Relay Power Ground) terminal boards. In this setup, TREG supplies the positive side of the DC power required for the solenoids, while TRPG handles the negative side, completing the circuit and ensuring proper power delivery to the solenoids.

Features

• Connection to Terminal Board: The positive side of the DC power to the solenoids is provided by TREG, while the negative side is provided by the terminal board. This configuration ensures proper electrical polarity for the solenoids' operation.
• Control by I/O Controller: The operation, including the activation of emergency trip solenoids, is controlled by the I/O controller. This centralizes control and coordination, allowing for efficient management of emergency functions.
• Functions Supported:
  • Supports various emergency functions, including Emergency overspeed protection: Monitoring and intervention in case of turbine overspeed conditions to prevent catastrophic failure.
  • Emergency stop functions: Initiating rapid shutdown procedures in response to critical safety situations.
  • Control of 12 Relays: The I/O controller manages 12 relays on the TREG board, with nine of these relays forming three groups of three. These relays are utilized to vote inputs controlling the activation of the three trip solenoids, enhancing redundancy and reliability in emergency trip operations.
• Solenoid Activation: The activation of trip solenoids is a critical safety measure, initiated by the I/O controller based on predefined conditions or emergency scenarios. TREG facilitates the electrical control and distribution necessary for timely solenoid activation.
• Coordination with Other System Components: Collaborates with other system components, such as the I/O controller and terminal board, to ensure seamless integration and effective execution of emergency functions.
• Redundancy and Safety: By providing redundant control capabilities and facilitating emergency trip operations, enhances system safety and reliability, minimizing the risk of accidents or equipment damage during critical situations.

Installation

• Mounting: Securely mount the terminal board in the designated location within the control cabinet or enclosure. Ensure proper alignment and sufficient clearance for wiring and connections.
• Wiring Emergency Trip Solenoids: Connect the three emergency trip solenoids to the first I/O terminal block on the TREG board. Ensure proper polarity and secure connections to avoid loose or faulty wiring.
• Economizing Resistors and Emergency Stop: Wire the economizing resistors and emergency stop components to the first I/O terminal block along with the trip solenoids. Follow wiring diagrams and labeling conventions to ensure correct connections.
• Trip Interlocks: Use the second terminal block on the board to wire up to seven trip interlocks, if required. Ensure proper termination and insulation of wires to prevent short circuits or electrical hazards.
• Cable Management: Organize and route wiring cables neatly to prevent tangling, interference, or accidental damage. Use cable ties or clamps to secure cables in place and maintain a tidy and organized wiring layout.
• Verification: Double-check all wiring connections and terminations to ensure accuracy and completeness. Verify that connections match the system requirements and wiring diagrams provided by the manufacturer.
• Testing: After installation, perform thorough testing and verification procedures to ensure the proper functionality of the terminal board and associated components. Test emergency trip operations, interlocks, and emergency stop functions to validate system integrity.

Operation

• I/O Controller Control: It is under the complete control of the I/O controller, which orchestrates its operation based on predefined logic and conditions. The I/O controller sends commands and signals to initiate various actions, such as activating emergency trip solenoids.
• Minimal Connections: Requires minimal connections to other control modules within the system. The primary connections consist of the J2 power cable and the trip solenoids. This streamlined connectivity simplifies integration and reduces complexity in the system architecture.
• Trip Signal Transmission: In simplex systems, an additional cable is utilized to transmit a trip signal from J1 to the TSVO terminal board. This trip signal serves the purpose of providing a servo valve clamp function upon turbine trip, enhancing safety and stability during emergency shutdowns.
• Emergency Trip Solenoid Activation: One of the primary functions of TREG is to control the activation of three emergency trip solenoids. Upon receiving the appropriate command from the I/O controller, it energizes the solenoids, initiating emergency shutdown procedures to safeguard the turbine and associated equipment.
• Coordination with Emergency Stop: Collaborates with the emergency stop function, ensuring synchronized operation during critical situations. The I/O controller coordinates the activation of emergency stop mechanisms in conjunction with the operation of TREG to implement rapid and effective shutdown procedures.
• Redundancy Considerations: While TREG primarily operates in simplex systems, redundancy considerations may be implemented at the system level to enhance reliability and fault tolerance. Redundant configurations may involve backup systems or failover mechanisms to mitigate the risk of single points of failure.

The WOC team is always available to help you with your Mark VIe requirements. For more information, please contact WOC.

Frequently Asked Questions

What is IS200TREGH1AAA?
It is a turbine emergency trip board developed by GE under the Mark VIe series.

What diagnostics does the I/O controller perform on the board and connected devices?
The I/O controller conducts diagnostics covering various aspects, including trip relay driver and contact feedbacks, solenoid voltage, economizer relay driver and contact feedbacks, K25A relay driver and coil, servo clamp relay driver and contact feedback, and solenoid voltage source.

What happens if the diagnostic values do not agree with the desired values?
If any of the diagnostic values deviate from the desired values, a fault is created, indicating a potential issue with the board or connected devices.

How are connectors JX1, JY1, and JZ1 identified and verified by the I/O controller?
Each connector on the TREG board has its own ID device, containing essential information such as the terminal board serial number, board type, revision number, and plug location. The I/O controller interrogates these ID devices, and if a mismatch is detected, a hardware incompatibility fault is generated.