SPECIFICATIONS
Part Number: DS2020FECNRX005A
Product Type: 24 Amp NRX/NRP field exciter Board
Manufacturer: General Electric
Series: Drive Controls
Current Rating: 5A
Availability: In Stock
Jumpers: JP1 - JP7
Terminal Blocks: 2
Manual: GEH-6005
Country of Manufacturer: United States (USA)
Functional Description
DS2020FECNRX005A is a 24 Amp NRX/NRP field exciter Board designed and developed by GE. It is a part of the General Electric Drive control system. The board is designed to regulate the voltage and current in power generation and distribution systems. It is specifically designed to function as a voltage regulator by monitoring the output voltage of a generator or motor and adjusting the excitation current to maintain a constant output voltage. The board is part of the General Electric Drive Control System and can be used to control excitation systems in generators or motors up to 24 Amps.
Features
- The component is a feature-rich board developed by GE for use in their line protection system. It incorporates several jumpers and terminal blocks, as well as prong-type connectors, to facilitate connections and configuration.
- The board is equipped with seven jumpers labeled JP1 through JP7. These jumpers play a crucial role in configuring the board's settings and functions. They can be adjusted by moving them to different positions to enable or disable specific features or establish desired connections.
- In addition to the jumpers, the board includes two terminal blocks, each consisting of three terminals. These terminal blocks provide convenient connection points for cables and wiring, allowing for secure and reliable electrical connections.
- It is also important to consider the board's fuse requirements. The manufacturer's documentation provides information on the specific fuses required for the board's operation. It is advisable to keep a supply of these fuses on hand to quickly replace any blown fuses and minimize downtime.
- In the case of a board replacement due to a defective original board, it is recommended to write down the connector ID on the cable to ensure correct reconnection. Additionally, noting the arrangement of the jumpers on the original board is crucial. If a jumper on the original board covers pins 1 and 2, the same pins should be covered by the jumper on the replacement board. Care should be taken to avoid bending the jumper pins while moving the jumpers to their appropriate positions.
- By following the installation procedures, properly connecting cables, and configuring jumpers as needed, the board can be effectively integrated into the line protection system, ensuring reliable and efficient operation.
- It is important to ensure a proper connection between the cables and the corresponding connectors to ensure seamless communication and electrical signal transfer.
System Contact Inputs
- The system contact inputs in the Mark V utilize the internal power distribution core's 125 V dc bus to generate a fuse-isolated and current-limited interrogation voltage. This interrogation voltage is used for monitoring the status of the contact inputs. While the typical input voltage range for the contact inputs is 24 V to 125 V, it is possible to use input voltages outside of this range. However, doing so may require a separate power source that is independent of the Mark V system.
- To isolate field grounds, jumpers on the terminal boards can be used to cut off the interrogation voltage from the contact inputs in groups of eight. This allows for flexible configuration and ensures proper grounding according to the specific system requirements.
- Each contact input is optically isolated, providing electrical isolation and protection against voltage fluctuations and noise. Within a mere 1 ms of a status change in any contact input, the system captures and records the time stamp associated with that event. This time-stamped information is particularly useful for sequence of events (SOE) recording.
- If a contact input is selected for SOE recording, the Mark V printer can log every change in the status of that specific contact input, along with its corresponding time stamp. This capability allows for detailed event analysis and troubleshooting, providing valuable insights into the system's operation and performance.
- The contact inputs are equipped with diagnostic circuitry that performs regular checks on the internal electronics of each input. This diagnostic circuitry operates at a frequency of 1 ms, swiftly monitoring the health and functionality of the contact inputs. If any abnormalities or issues are detected, an alarm is triggered, notifying the operators or maintenance personnel to investigate and address the problem promptly.
- Overall, the system contact inputs in the Mark V system provide reliable and precise monitoring of various external devices and equipment. The integration of time-stamped recording, optically isolated inputs, and diagnostic features enhances the system's performance, fault detection capabilities, and overall operational efficiency.
Characteristics
- The GE Line Protection Board features several prong-type connectors identified as P1C1, P1G1, P2G1, and N1CI. These connectors utilize metal prongs covered by matching socket connectors. They serve as interface points for cables originating from other components attached to the board using standoffs.
- During the installation process, it is recommended to secure the board to the unit using plastic screws before connecting the cables. This ensures proper alignment and stability. The installation procedure provided by the manufacturer's documentation should be followed to understand the correct cable connections and other installation guidelines.
When connecting the cables, it is essential to refer to the connector identifiers, such as P1C1, P1G1, P2G1, and N1CI. These identifiers help ensure accurate and reliable cable connections to the appropriate connectors on the board.
Software Structure
- IDOS is a proprietary disk-operating system that allows a properly configured 386 or 486 IBMTM compatible personal computer to be used as an I. On the hard disk drive of the I, the software is divided into two groups. Product-specific software and site-specific software are separated on pseudo or substitute drives.
- The site-specific software is stored in various subdirectories on the F: drive. On drive G, the software that is shared by all turbine control panels is stored in subdirectories. A typical factory-configured I computer's hard drive is partitioned into one logical drive, C. Drives F: and G: are actually subdirectories of the C: drive's IDP directory. The commands in the AUTOEXEC.BAT file that is executed when I is started create the pseudo drives.
- IDOS programs require the above pseudo drive and directory structure for proper I operation and data transmission to and from the unit control panel (s).
Product Attriibutes
- Excitation Capacity: Up to 24 Amps
- Excitation Type: NRX (Non-Reversing Field Supply) with 5 Amp Shunt
- Connector Types: Multiple prong-type connectors on the board
- Mounting: The board is installed on standoffs on another component of the drive
- Connector IDs: Connectors labeled as P1C1, P1G1, P2G1, and N1CI
- Cable Connection: Cables attached to connectors originate from the component attached to the board with standoffs
- Connection Process: Attach the board to the unit using plastic screws before connecting the cables
WOC is happy to assist you with any of your GE requirements. Please contact us by phone or email for pricing and availability on any parts and repairs.
FREQUENTLY ASKED QUESTIONS
What is DS2020FECNRX005A?
It is a 24 Amp NRX/NRP field exciter Board designed and developed by GE.
What is the amp rating on FECNRX005A?
It is a 5 amp field exciter.
Which are the connectors on the board?
The connectors are P1C1, P1G1, P2G1, and N1CI.
What are the prong-type connectors used for?
The prong-type connectors are used to connect cables to the board. They are made up of metal prongs that are covered by a matching socket connector.
How should cables be connected to the board?
To connect cables to the board, use the connector identifiers (P1C1, P1G1, P2G1, and N1CI) and examine the information on what fuses are required for the board. Before connecting cables to the board, secure the board to the unit with plastic screws.
What is the function of the component?
It is specifically designed to function as a voltage regulator by monitoring the output voltage of a generator or motor and adjusting the excitation current to maintain a constant output voltage.
