SPECIFICATIONS
Part No.: IS200VTURH2BAB
Manufacturer: General Electric
Country of Manufacture: United States of America (USA)
Temperature: 0 to 60 °C
MPU pulse rate range: 2 Hz to 20 kHz
MPU pulse rate accuracy: 0.05 percent of reading
MPU input circuit sensitivity: 27 mV pk
Product Type: Turbine Specific Primary Trip Board
Availability: In Stock
Series: Mark VI
Functional Description
IS200VTURH2BAB is a turbine specific primary trip board developed by GE. It is a part of Mark VI control system. The controller in a gas turbine system is a pivotal component responsible for orchestrating various critical functions that ensure the safe and efficient operation of the turbine. The controller employs four passive pulse rate devices to measure the turbine speed accurately. These devices capture the rotational speed of the turbine and provide the controller with real-time data. The speed information is essential for monitoring and controlling the turbine's operational parameters.
Features
- Overspeed Protection: Utilizing the turbine speed data, the controller generates the primary overspeed trip signal. This overspeed protection mechanism is crucial for preventing catastrophic failures in the turbine. In the event of an overspeed condition, the controller initiates a trip signal, ensuring the rapid shutdown of the turbine to prevent damage.
- Automatic Generator Synchronization: The controller facilitates automatic generator synchronization, a critical process in power generation systems. By synchronizing the generator, the controller ensures a seamless connection to the power grid. Additionally, the controller is responsible for closing the main breaker, allowing the synchronized generator to contribute to the power distribution system.
- Monitoring Induced Shaft Voltage and Current: The controller monitors induced shaft voltage and current to ensure the integrity of the turbine's mechanical and electrical components. Detecting abnormal levels of voltage or current is vital for preventing equipment damage and ensuring the longevity of the turbine.
- Flame Detection in Gas Turbine Applications: In gas turbine applications, the controller oversees the monitoring of eight Geiger Mueller flame detectors. These detectors, connected to the TRPG terminal board, use 335 V DC and 0.5 mA from an external supply. The controller processes the signals from these detectors to ensure the presence or absence of flames, contributing to the overall safety of the turbine operation.
- Overspeed Trip Relay Control: The controller assumes control over three primary overspeed trip relays on the TRPG terminal board. These relays play a crucial role in initiating emergency shutdowns in response to an overspeed condition. The controller generates the trip signal, which is then transmitted to the VTUR and subsequently to the TRPG to trip the emergency solenoids.
- Interface with Electrical Trip Devices: The controller interfaces with the TRPG, which contains nine magnetic relays for interfacing with three trip solenoids known as Electrical Trip Devices In TMR systems, all nine relays are utilized, while in simplex systems, three relays suffice. This interaction ensures a reliable and redundant mechanism for initiating trips in response to critical system conditions.
Generator and bus voltage sensors
- Configuration of Potential Transformers (PT): The system incorporates two single-phase potential transformers, each providing a secondary output with a nominal 115 V RMS. These transformers play a vital role in accurately measuring voltage levels associated with the generator and bus.
- Low Loading for Efficient Operation: Each input of the potential transformers operates with minimal loading, ensuring that the sensors do not introduce a significant burden on the system. With less than 3 VA of loading per input, the sensors contribute to the efficiency and stability of the overall power system.
- Synch Voltage Range and Stability: The allowable voltage range for synchronization is specified between 75 to 130 V RMS. This range is critical for synchronization processes, ensuring that the generator and bus voltages are within acceptable limits for safe and reliable operation.
- Magnetic Isolation for Safety: Each input of the potential transformers is magnetically isolated, featuring a 1,500 V RMS barrier. This isolation is a safety measure that prevents unwanted electrical interactions and ensures that the voltage measurement process remains secure and reliable.
- Cable Length Flexibility: The system accommodates cable lengths of up to 1,000 feet using 18 AWG wiring. This flexibility in cable length allows for versatile installations, enabling the sensors to be strategically placed for optimal voltage measurement without compromising signal integrity.
- Key Considerations for Implementation: The implementation of potential transformers for voltage sensing involves meticulous consideration of factors such as loading, isolation, and cable length. These considerations collectively contribute to the effectiveness and reliability of the voltage measurement system.
- Applications in Power Systems: Generator and bus voltage sensors are essential in power systems for monitoring and control purposes. They play a pivotal role in synchronizing generators, maintaining voltage stability, and preventing undesirable voltage fluctuations that could impact the overall system performance.
The WOC team is always available to help you with your Mark VI requirements. For more information, please contact WOC.
Frequently Asked Questions
What is IS200VTURH2BAB?
It is a turbine specific primary trip board developed by GE under the Mark VI series.
What happens if feedback from the solenoid relay drivers differs from the control signal?
In the event that feedback from the solenoid relay drivers deviates from the control signal, a fault is promptly created. This mechanism ensures that any discrepancies between the expected and actual responses of the solenoid relay drivers are immediately identified for corrective action.
How is a fault triggered if feedback from the relay contacts differs from the control signal?
Similar to the solenoid relay drivers, if feedback from the relay contacts does not align with the control signal, a fault is generated. This proactive approach detects any inconsistencies between expected and actual relay contact responses.
Under what conditions does the system register a fault for loss of solenoid power?
A fault is created if there is a loss of solenoid power. This safeguard ensures that any interruption in solenoid power is promptly identified, enabling swift corrective measures to maintain the reliability of the system.
What conditions trigger a fault related to flame detectors?
High and low flame detector voltages are identified as fault conditions. These faults are indicative of potential issues with the flame detection system, ensuring that variations in flame detector voltages are promptly recognized and addressed.
Which conditions lead to faults involving synch check relays, auto synch relays, and the K25 relay?
Faults are created in the presence of a slow synch check relay, slow auto synch relay, or a locked-up K25 relay. These fault conditions serve as early indicators of potential problems in synchronization-related components.
