IS210TRESH1A - Emergency Trip DINrail Board

SPECIFICATIONS

Part No.: IS210TRESH1A
Manufacturer: General Electric
Product Type: Emergency Trip DINrail Board
Number of trip solenoids: 3
Trip Solenoid Rating: 125 V dc
Product Type: Steam Turbine Emergency Trip Terminal Board
Technology: Surface Mount
Common Mode Voltage Range: ±5 V
Dimensions: 17.8 cm wide x 33.02 cm
Operating temperature: 0 to 60 oC
No.of Analog Voltage Inputs: 6
Availability: In Stock
Country of Manufacture: United States (USA)
Series: Mark VI

Functional Description

IS210TRESH1A is an Emergency Trip DINrail Board developed by GE. It is a part of the Mark VI control system. It operates under the control of an I/O controller and is responsible for managing emergency stop functions, primarily by providing power to three emergency trip solenoids. These solenoids are connected between the board and the TRPS terminal boards. TRES supplies the positive side of a 125 V DC power source to the solenoids, while it provides the negative side. This coordinated system ensures effective and reliable turbine trip activation during emergencies, especially when overspeed conditions are detected.

Features

• Seven dry contact inputs for trip interlocks, which allow for additional safety checks and interlocking mechanisms to ensure that the turbine only trips when necessary.
• The system does not include economizing relays or emergency stop inputs, simplifying its design for emergency overspeed protection.
• The dry contact inputs are actively monitored, and their signals are transmitted to the I/O controller, which processes the interlock status and commands the appropriate emergency actions.
• TRES also includes specific relay drivers such as the synch check relay driver (K25A) and the servo clamp relay driver (K4CL), along with associated monitoring capabilities. These components are similar to those used in the TREG board, ensuring consistent functionality across systems.
• The I/O controller plays a critical role in providing emergency overspeed protection by controlling three relays on the system, which, in turn, manage the operation of the trip solenoids. These trip solenoids are responsible for initiating emergency stops, thus preventing potential damage to the turbine due to overspeed conditions. The TRES system is available in both simplex and TMR (Triple Modular Redundant) configurations, depending on the level of system reliability and redundancy required.

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Frequently Asked Questions

What is IS210TRESH1A?
It is an Emergency Trip DINrail Board developed by GE

What is the purpose of the trip solenoids in the system?
The trip solenoids are responsible for triggering the turbine shutdown mechanism in case of an emergency, such as overspeed. When activated, they help stop the turbine by cutting off power or steam supply to prevent damage.

Where are the trip interlocks wired in the system?
Up to seven trip interlocks are wired to the second I/O terminal block. These interlocks serve as additional safety measures to ensure that the turbine only trips when necessary conditions are met, preventing accidental or unnecessary shutdowns.

What does Connector J2 do in the system?
Connector J2 carries three power buses from the Trip Relay Protection System (TRPS). These buses provide the necessary power to ensure that the trip solenoids and other components of the TRES system function correctly during emergency conditions.