SPECIFICATIONS
Part No.: IS200TGENH1A
Manufacturer: General Electric
Country of Manufacture: United States of America (USA)
Product Type: Terminal Board Generator Monitor
Availability: In Stock
Weight: 4.00 lbs
Dimensions: 15.00 x 9.00 x 3.00
Series: Mark VI
Functional Description
IS200TGENH1A is a Terminal Board Generator Monitor developed by GE under the Mark VI series. The Generator Monitor (TGEN) terminal board communicates with the VGEN processor to monitor the three-phase voltage and currents of the generator, as well as to calculate the three-phase power and power factor. VGEN provides the PLU and EVA capabilities for large steam turbine applications by utilizing fast-acting solenoids situated on the TRLY terminal board. The TGEN in the Mark VI system collaborates with the VGEN processor and supports simplex and TMR applications. A single cable links one TGEN to the VGEN. TGEN connects to three VGEN boards through three distinct wires in TMR systems.
Operation
- TGEN's two- and three-phase PT inputs, as well as three- and one-phase current transformer CT inputs, are monitored by VGEN. Four analog inputs can be adjusted for 4-20 mA or 5, 10, 20 V dc using jumpers. The phase of the input signals is checked using test points on the generator and bus voltages and currents. VGEN converts signals and calculates power, power factor, and frequency.
- To verify the phase in the field, test points are provided for all PT and CT inputs. Three single-phase CT inputs with a continuous normal current range of 0 to 5 A are provided. TGEN's CTs are magnetically isolated. CT terminations are non-pluggable terminal blocks with captive lugs that accept wires up to #10 AWG.
- The four analog inputs can accept 4-20 mA or 5-10 V dc signals. A +24 V dc source is available for all four circuits, each with its own current limit. The 4-20 mA transducer can be connected to either the turbine control's +24 V dc source or as a self-powered source.
Installation
The installation process involves wiring the analog current and potential transformer (PT) inputs to specific terminal blocks on the system. Here's a detailed expansion of this installation procedure:
- Wiring Analog Current and Potential Transformer Inputs: The analog current and potential transformer inputs are connected to terminal block 1. These transformers are crucial components for measuring current and voltage within the system, facilitating accurate readings for monitoring and control purposes.
- Current Transformer Wiring to Special Terminal Blocks: The current transformers (CT) have dedicated wiring points located at special terminal blocks TB2, TB3, and TB4. These specific terminal blocks are designed to prevent the unplugging of CT connections, ensuring a safeguard against an open circuit scenario. This protective measure aims to maintain system integrity and accuracy by securing the CT connections.
- Jumper Settings for Desired Input Configuration: Jumpers labeled as J1A and J1B are used to set the desired input configuration, specifically for analog inputs 1 through 4. These jumpers allow users to configure whether the inputs should operate based on current or voltage signals. Adjusting these jumpers helps align the system's input type (current or voltage) with the nature of the connected sensors or devices.
- Purpose of Jumper Settings: J1A and J1B jumpers play a pivotal role in configuring the system's input preferences. By setting these jumpers, users can specify whether the analog inputs 1 through 4 should be configured for receiving current or voltage signals. This configuration flexibility enables the system to adapt to varying sensor or device requirements for accurate signal interpretation.
- Ensuring Desired Input Type: Proper configuration of jumpers J1A and J1B is essential to ensure that the analog inputs 1 through 4 are set to the desired input type (current or voltage). This alignment ensures compatibility and accurate signal processing within the system.
Characteristics
Inputs to VGEN and TGEN
- Two 3-phase generators and bus PTs
- Three 1-phase generators CTs
- Four analog inputs
Generator and bus voltages
- 115 V RMS nominal
- The nominal frequency is 50/60 Hz.
- Magnetic isolation of up to 1,500 V RMS (loading less than 3 VA)
- Less than 3 VA of input loading per circuit
Generator current inputs
- The normal current range is 0 to 5 A, with an over-range of up to 10 A.
- The nominal frequency is 50/60 Hz, while the frequency range of interest is 45 to 66 Hz.
- Magnetic isolation of up to 1,500 V RMS
- Less than 0.5 input load per circuit
Diagnostics
- Diagnostics check the input signal for a high/low (hardware) limit and a high/low system (software) limit.
- The software limit check can be changed in the field. Voltage inputs have open wire detection, and relay drivers and coil currents are monitored. The terminal board's connectors JR1, JS1, and JT1 each have their own ID device that is interrogated by the I/O board.
- The ID device is a read-only chip that contains the serial number, board type, revision number, and plug location of the terminal board.
Configuration
The configuration of the terminal board involves the utilization of jumpers, allowing for customizable settings to suit specific input requirements. Here's an expansion on the available jumper choices:
- Jumper Functions: Jumpers J1A through J4A serve the purpose of selecting between current input or voltage input. These jumpers allow users to determine the type of input for each corresponding terminal or channel on the board. Jumpers J1B through J4B play a crucial role in deciding whether the return path is connected to common or left open. This configuration choice influences the grounding or isolation of the return path for each specific input channel.
- Location and Configuration Guide: The exact placement and configuration of these jumpers are specified in the installation diagram provided with the terminal board. The diagram illustrates the precise locations and settings of these jumpers, guiding users on how to configure them based on their intended input preferences.
Jumper Choices and Settings: J1A through J4A jumpers enable users to specify whether the input signal for each channel should be received as a current input or a voltage input. This choice is essential in aligning the board's input method with the nature of the connected sensors or devices. J1B through J4B jumpers determine whether the return path for each channel is connected to the common ground or is left open. This configuration decision affects the grounding scheme or isolation of the return path, providing flexibility in system design and electrical connections.
- Application Specificity: The specific choice of jumper settings depends on the application's requirements, the type of sensors or devices connected to the terminal board, and the desired electrical configuration for the inputs.
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 IS200TGENH1A?
It is a Terminal Board Generator Monitor developed by GE under the Mark VI series.
What is the function of the component?
TGEN board along with the generator board VGEN monitors the generator's three-phase voltage and currents and calculates three-phase power and power factor.
What is the voltage input range?
Voltage inputs ranges from + or - 5 V dc , + or - 10 V dc.
Does the component support Simplex and TMR systems?
Yes, TGEN supports both Simplex and TMR systems.
