SPECIFICATIONS
Part No.: IS200TGENH1AAA
Manufacturer: General Electric
Country of Manufacture: United States of America (USA)
Temperature: -30 to +65 oC
Product Type: Generator Monitor Terminal Board
Availability: In Stock
Series: Mark VIe
Functional Description
IS200TGENH1AAA is a Generator Monitor Terminal Board developed by GE. It is a part of the Mark VIe control system. The generator board VGEN and its associated terminal board TGEN play a crucial role in monitoring and controlling various aspects of generator operation within power generation systems. These components are integral to ensuring the stability, efficiency, and safety of large steam turbine applications.
Features
- Monitoring Three-Phase Voltage and Currents: The primary function of the generator board VGEN and terminal board is to monitor the three-phase voltage and currents generated by the generator. This entails continuous measurement and analysis of electrical parameters to ascertain the health and performance of the generator.
- Calculation of Three-Phase Power and Power Factor: In addition to monitoring voltage and currents, VGEN and TGEN are equipped with algorithms to calculate three-phase power and power factor. These calculations provide essential insights into the electrical output of the generator and help in optimizing system efficiency.
- Power Load Unbalance (PLU) Function: For large steam turbine applications, VGEN incorporates the power load unbalance (PLU) function. PLU function detects and addresses any imbalance in the power load across the generator's phases. By identifying and rectifying load imbalances promptly, this function ensures even distribution of power, thereby enhancing system stability and reliability.
- Early Valve Actuation (EVA) Function: Another critical function facilitated by VGEN in steam turbine applications is the early valve actuation (EVA). EVA function employs fast-acting solenoids strategically located on the TRLY terminal board. These solenoids enable rapid adjustment of turbine valves based on real-time data and operational requirements. By facilitating swift valve actuation, EVA function optimizes turbine performance and responsiveness, thereby enhancing overall system efficiency.
- Integration with Control and Monitoring Systems: VGEN and TGEN seamlessly integrate with broader control and monitoring systems within the power generation setup. This integration allows for real-time data exchange and coordinated control actions, ensuring synchronized operation and optimal performance across all system components.
Installation
- When installing the analog current and potential transformer (PT) inputs, it is essential to adhere to proper wiring procedures to ensure optimal functionality and safety within the system. These inputs play a crucial role in monitoring electrical parameters and must be connected appropriately for accurate readings.
- Wiring to Terminal Block 1: The analog current and PT inputs are typically wired to terminal block 1. This terminal block serves as the interface point for these inputs, facilitating their connection to the control or monitoring system. Proper termination and secure wiring are essential to maintain signal integrity and prevent potential issues such as signal distortion or loss.
- Wiring Current Transformers (CTs) to Special Terminal Blocks TB2, 3, and 4: Unlike the analog inputs, the current transformers (CTs) are wired to special terminal blocks TB2, TB3, and TB4. These terminal blocks are specifically designed to accommodate CT connections and are configured to prevent accidental disconnection. This feature serves as a protective measure against an open CT circuit, ensuring continuous monitoring and safeguarding against potential disruptions in current measurement.
- Use of Jumpers J1A and J1B: Jumpers J1A and J1B play a crucial role in setting the desired input current or voltage on analog inputs 1 through 4. These jumpers enable the configuration of input parameters based on system requirements and specifications. By selectively positioning these jumpers, users can tailor the input settings to align with the operational needs of the system, ensuring accurate measurement and optimal performance.
- Importance of Proper Installation: Proper installation of analog current and PT inputs, as well as CT connections, is paramount to the overall functionality and reliability of the system. Following manufacturer guidelines and recommended practices during installation helps mitigate the risk of errors or malfunctions that could compromise system performance or safety. Additionally, adherence to installation procedures ensures compliance with industry standards and regulations, promoting the longevity and effectiveness of the electrical monitoring system.
Analog Inputs
- Current Inputs: Current inputs are typically in the range of 4-20 mA, providing a standardized method for transmitting process data. This range allows for accurate representation of current levels, facilitating precise measurement and control within the system.
- Voltage Inputs: Voltage inputs accept signals in the range of ±5 V dc or ±10 V dc. This versatility in voltage range enables the system to handle diverse voltage signals with precision and reliability, ensuring compatibility with different transducer outputs and signal levels.
- Transducer Distance and Cable Resistance: Transducers can be located up to 300 meters (984 feet) away from the control cabinet, allowing for flexible placement within the operational environment. The system accommodates this distance by accounting for the two-way cable resistance of 15 ohms, ensuring signal integrity and accuracy over long transmission distances.
- Input Burden Resistor on TGEN: A 250-ohm input burden resistor is installed on the TGEN terminal board. This resistor serves to optimize signal conditioning and ensure proper voltage or current measurement, enhancing the accuracy and reliability of the input signals within the system.
- Jumper Selection Options:
- Single Ended or Self-Powered Inputs: Users can select between single-ended or self-powered inputs based on the type of transducer and signal source. This flexibility allows for seamless integration of different input configurations, enhancing system versatility.
- Voltage or Current Inputs: Jumpers enable the selection between voltage and current inputs, allowing users to adapt the system to different signal types and measurement needs. This versatility ensures compatibility with a wide range of transducers and signal sources.
- Importance of Jumper Selection: Proper jumper selection is critical for configuring analog inputs to suit the application's needs accurately. By selecting the appropriate jumper settings, users can ensure optimal signal processing, accurate measurement, and reliable operation of the system, enhancing overall performance and efficiency.
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 IS200TGENH1AAA?
It is a generator monitor terminal board developed by GE under the Mark VIe series.
What diagnostic checks are performed on input signals?
Diagnostics include high/low limit checks on the input signal, both at the hardware and software levels. These checks ensure that input signals fall within acceptable ranges, detecting anomalies that could indicate system malfunction or component failure.
How are hardware limit checks different from software limit checks?
Hardware limit checks involve direct monitoring of input signals to determine if they exceed predefined thresholds. Software limit checks, on the other hand, are adjustable in the field and are implemented within the system's software to provide additional flexibility in defining acceptable signal ranges.
Can the software limit checks be adjusted?
Yes, the software limit checks are adjustable in the field, allowing operators to modify the predefined thresholds to suit specific application requirements or changing operating conditions.
Is open wire detection provided for voltage inputs?
Yes, open wire detection is included for voltage inputs. This feature detects open circuits in voltage input connections, alerting operators to potential wiring issues that could affect signal integrity or measurement accuracy.
How are relay drivers and coil currents monitored?
Relay drivers and coil currents are continuously monitored within the system. This monitoring ensures proper functioning of relays and associated components, detecting abnormalities such as excessive current draw or relay failure.
