IS230TNTRH2C - Primary Turbine Protection Assembly Module

SPECIFICATIONS

Part Number: IS230TNTRH2C
Manufacturer: General Electric
Series: Mark VIe
Input filter: Hardware filter, 4 ms
Power consumption: 20.6 W on the terminal board
Size: 33.02 cm high x 10.16 cm wide
Temperature: -30 degrees Celsius to 65 Celsius.
Product type: Primary Turbine Protection Assembly
Country of Manufacture: United States (USA)

Functional Description

IS230TNTRH2C is a Primary Turbine Protection Assembly developed by General Electric. It is a part of the Mark VIe series.This component is specifically designed to ensure the safe and reliable operation of turbines by integrating high-speed signal processing and advanced safety protocols. The assembly is equipped with three PTUR I/O packs that are mounted on a DIN rail for streamlined installation and efficient operation.

Features

• Control Overspeed Protection: The initial line of defense, control protection, functions through a closed-loop speed control system. This system uses fuel or steam valves to regulate turbine speed under normal operating conditions, preventing overspeed situations before they occur.
• Primary Overspeed Protection: Primary protection is directly managed by the turbine controller and relies on high-precision monitoring. The process involves the following steps:
  • Shaft Speed Signal Collection: The TTUR terminal board and PTUR I/O pack collect shaft speed signals from the turbine.
  • Median Signal Selection: The turbine controller evaluates the incoming signals and selects the median value to ensure reliability.
  • Trip Signal Activation: If a trip condition is identified, the controller sends a trip signal through the PTUR I/O board to the TRPG terminal board.
  • Voting Mechanism: The trip signal passes through a three-relay voting circuit, employing a 2/3 voting logic for enhanced reliability. Each relay corresponds to one trip solenoid. If the voting logic determines a trip, power is removed from the solenoids to initiate the necessary protective actions.
• Emergency Overspeed Protection: Emergency protection serves as the final safeguard against overspeed scenarios. It is designed to operate independently of the control and primary mechanisms, ensuring that the turbine is protected even in case of a systemic failure.

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FREQUENTLY ASKED QUESTIONS

What is IS230TNTRH2C?
It is a Primary Turbine Protection Assembly developed by General Electric.

What components are included in the assembly?
The assembly includes three PTUR I/O packs mounted on a DIN rail. These I/O packs collect shaft speed signals and play a crucial role in implementing turbine protection mechanisms.

What is the significance of the 2/3 voting logic?
The 2/3 voting logic is a safety feature that requires at least two out of three signals to confirm a trip condition. This minimizes false trips and ensures that turbine shutdowns only occur in genuine fault scenarios.

What are the key installation features?
It is designed for DIN rail mounting, ensuring easy installation and integration with other components of the Mark VIe series.

Is it compatible with other General Electric systems?
Yes, it is fully compatible with the Mark VIe control system, which is widely used for turbine management in various industries.

What makes it reliable for turbine protection?
It uses advanced signal processing, redundancy through three PTUR I/O packs, and a robust voting logic mechanism, ensuring reliable and accurate turbine protection in critical conditions.