GE

Core Functions

1. Precision Analog Voltage Regulation & Closed‑loop Control This board implements high‑precision analog‑circuit‑based closed‑loop voltage regulation. It receives set‑point commands from Mark‑IV main processor and field feedback signals, executes analog PID regulation for generator‑excitation voltage or turbine‑related control loops. It generates conditioned analog drive outputs for power‑stage circuits to stabilize output voltage under load fluctuation conditions.plcva.com

GE DS3800NOWA1H1H Voltage Regulator Regulator Card

1. Field Signal Sampling & Signal Conditioning On‑board circuitry samples and conditions AC/DC feedback signals from generator‑excitation systems, transducers and process transmitters. It completes signal filtering, amplitude scaling and offset adjustment, converts raw field measurement signals into compatible low‑level analog signals for the main control rack. Trimmer potentiometers on PCB support field calibration and gain fine‑tuning for different unit parameters.
2. Rack Backplane Bus Signal Interaction Plug‑in rack‑mount PCB installed inside Mark‑IV control cabinet. It communicates with other processor and I/O boards via rack backplane connectors. It receives digital‑to‑analog converted control setpoints from main CPU, meanwhile feeds regulated‑loop status and fault‑related analog values back to other system boards for further processing and voting logic.More products: www.plcva.com
3. Hardware‑level Fault Monitoring & Status Indication Built‑in analog‑circuit diagnostic logic monitors loop deviation, over‑voltage, under‑voltage and internal circuit anomalies. On‑board test‑points allow maintenance technicians to measure critical working voltages directly during troubleshooting. Abnormal status signals are transmitted to Mark‑IV system for alarm logging and protection‑interlock triggering. Conformal‑coated PCB resists humidity, dust and corrosive atmosphere in power‑plant cabinet environments.
4. Galvanic Signal Isolation & Noise Suppression Integrated isolation circuits separate high‑power excitation‑side signals from low‑voltage control logic. It suppresses ground‑loop interference and EMI noise generated by generator excitation‑rectifier stacks, improving loop stability under heavy‑interference power‑plant operating‑conditions.
5. Redundant‑system Compatible Operation Designed for Mark‑IV two‑out‑of‑three voting redundant architecture. Multiple regulator boards work in parallel for critical control loops; system executes voting comparison on regulation results to reduce risk of single‑board hardware failure causing turbine mis‑operation.

GE DS3800NOWA1H1H Voltage Regulator Regulator Card

Applications & Purposes

DS3800NOWA1H1H is legacy dedicated voltage‑regulator PCB for GE Speedtronic Mark‑IV gas‑turbine and steam‑turbine control system. It cannot operate independently; it must cooperate with complete Mark‑IV rack hardware and firmware.plcva.com

Typical Application Industries ‑ Thermal power plants: gas‑turbine combined‑cycle units, steam‑turbine generator‑sets ‑ Petrochemical & refinery: turbine‑driven generator and large‑compressor packages ‑ Oil‑gas on‑site power‑generation facilities ‑ Existing‑power‑plant lifecycle‑extension and spare‑part‑replacement maintenance‑projects

Main Purposes

GE DS3800NOWA1H1H Voltage Regulator Regulator Card

1. Execute closed‑loop voltage regulation for generator excitation loops, stabilize generator output voltage during load variation.
2. Condition field‑acquired feedback signals, serve as analog regulation front‑end for turbine‑generator control.
3. Deliver conditioned analog drive signals to downstream power‑excitation hardware to realize accurate excitation‑control.
4. Detect regulation‑loop abnormalities and feed fault‑status to Mark‑IV main system for alarm and protection interlock.
5. Act as replacement spare‑part for aging Mark‑IV racks; restore voltage‑regulation‑loop function after original‑board hardware‑failure for running power‑generation‑units.

Understand the lowest price, please contact via email: plcvarious@foxmail.com

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