DS2020FECNRX015A - 24 Amp NRX/NRP Field Exciter Module

SPECIFICATIONS:

Part Number: DS2020FECNRX015A
Manufacturer: General Electric
Series: DC2000
Product Type: 24 Amp NRX/NRP Field Exciter Module
Number of channels: 12
Common Mode Voltage Range: +5 V dc
Maximum Lead Resistance: 15 Ohm
Analog output current: 0-20 mA
Operating temperature: -30 to 65 �C
Size: 8.26 cm high x 4.18 cm
Frequency: 50 or 60 Hz
Repair: 3-7 Day
Availability: In Stock
Weight: 2 lbs
Country of Origin: United States
Manual: GEH-6005

FUNCTIONAL DESCRIPTION:

DS2020FECNRX015A is a 24 Amp NRX/NRP Field Exciter Module manufactured and designed by General Electric as part of the DC2000 Series used in GE Speedtronic Turbine Control Systems. The DS2020FEC 24 Amp NRX/NRP Field Exciter Module (FEC) excites up to a 24 A motor field with a DC2000 drive. It can operate with either of two types of non-reversing field supplies: non-plugging(NRX) or plugging (NRP). The FEC typically is used with C, G, and M frame DC2000 drives. The FEC module can be mounted either within or outside the drive core. The module's I/O connections are made on its gating board, the DS200FSAAG1 (for NRP) or -G2 (for NRX). The -G1 board includes jumpers that allow it to function with NRX supplies. The module receives gate pulse signals from the drive's power supply board: a board (SDCI) for NRX-only applications and a DS200DCFB board(DCFB) for NRX or NRP applications. The SDCI can control only one FEC module; the DCFB board can control up to two FEC modules.

FUNCTIONS OF 24 AMP NRX/NRP FIELD EXCITER MODULE:

• Excitation Control: The module regulates the excitation current that powers the rotor winding of the generator or turbine. By controlling this current, it maintains the proper field strength required for stable voltage generation.

• Field Current Regulation: The exciter module continuously monitors and adjusts the field current to maintain the desired output voltage from the generator, compensating for any variations in load or system conditions.

• Load Compensation: As the load on the generator changes, the field exciter module adjusts the field current to ensure that the generator maintains a constant voltage output, ensuring optimal performance and efficiency.

• Fault Detection: The NRX/NRP module often includes built-in fault detection and diagnostics. It can identify issues such as overvoltage, undervoltage, or field failure and may trigger alarms or shutdowns to protect the system from damage.

• Voltage and Frequency Control: The module contributes to the control of both voltage and frequency by ensuring that the excitation system is accurately tuned to the operating conditions of the generator, which is especially critical in power generation plants.

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FREQUENTLY ASKED QUESTIONS:

What is the purpose of the NRX/NRP Field Exciter Module?

The NRX/NRP Field Exciter Module regulates the field current in a turbine or generator excitation system. It ensures the generator operates efficiently by maintaining the necessary magnetic field strength to produce stable voltage output.

How does the NRX/NRP module adjust the field current?

The module continuously monitors and adjusts the field current based on load fluctuations, ensuring the generator operates within the required voltage limits. It compensates for variations in load and system conditions.

What are the operating temperature limits for the NRX/NRP module?

The module typically operates within a temperature range of -20�C to +50�C. Always refer to the user manual for exact specifications and ensure the system is installed in a temperature-controlled environment.