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SPECIFICATIONS:
Part No: DS3800NPCG
Manufacturer: General Electric
Series: Mark IV
Board Type: Snubber / Signal Conditioning
Interface: I/O Terminal Blocks TB1, TB2
Input Signal Range Voltage: ±10 V or 4-20 mA
Signal Input Type: Analog (±10V, 4-20mA)
Frequency Response: DC to 5 kHz
Output Power Voltage: Up to ±100 V
Operating Voltage: 24–125 VDC
Frequency Response Range: 0 Hz to 10 kHz
Mounting: Standard mounting
Operating Temperature Range: -20°C to +70°C
Country of Origin: USA
Availability: In Stock
FUNCTIONAL DESCRIPTION:
DS3800NPCG is a Snubber Board manufactured and designed by General Electric and is part of the Mark IV Series used in GE Speedtronic Gas Turbine Control Systems. The Snubber Board is an auxiliary circuit module designed to protect and stabilize the main control board in turbine control systems. It absorbs voltage spikes and suppresses electrical transients generated by inductive components like relays, solenoids, and breakers, preventing damage to sensitive electronics. Additionally, it filters electrical noise, ensuring the main control system receives clean and stable signals for accurate operation. The board also conditions incoming signals from sensors and I/O devices, maintaining proper timing and amplitude to avoid false trips or operational errors.
INSTALLATION:
The Snubber Board is mounted directly onto the main control board or its designated chassis location using screws or fasteners provided by the manufacturer. Before installation, ensure the turbine control system is powered off and all relevant safety procedures are followed to prevent electrical hazards. Align the board’s connector pins with the corresponding sockets or terminal blocks, and securely fasten it in place to maintain stable electrical connections.
Once mounted, verify all wiring to sensors, pulse rate pickups, relays, and I/O modules is properly connected according to the system’s wiring diagram. After installation, perform a system check to ensure proper signal transmission, noise suppression, and overall functionality of the turbine control system before resuming normal operations.
OPERATION:
The DS3800NPCG Snubber Board interfaces with I/O terminal blocks (TB1, TB2) and connects to pulse rate pickups (TRPA), breaker relays, E-STOP circuits, and voltage detection inputs. It implements RC damping networks, snubber capacitors, and resistive loads to suppress high-frequency transients, voltage spikes, and inductive switching noise.
Input signals from sensors and actuators are conditioned, filtered, and isolated to maintain signal integrity within specified voltage and current thresholds. The board provides electrical buffering, transient absorption, and waveform shaping, ensuring that all outputs to the turbine control logic and processor modules are noise-free, temporally synchronized, and within operational parameters, thereby preventing spurious trips and logic errors.
FUNCTIONS OF SNUBBER BOARD:
Surge Protection: The snubber board helps to absorb voltage surges or spikes caused by switching operations, faults, or electromagnetic interference. By doing so, it prevents these transients from reaching sensitive control components, which could otherwise damage them.
Damping High-Frequency Noise: It reduces high-frequency electrical noise that may be generated by electrical equipment or external sources. This noise can interfere with the signals within the turbine control system, affecting its performance.
Limiting Voltage Spikes: In turbine control systems, voltage spikes can occur during the operation of power switches or when there are sudden changes in load. The snubber board limits these voltage spikes, protecting sensitive components like transistors, microcontrollers, and relays from damage.
Improving Signal Integrity: The snubber board helps to maintain stable signal levels in control systems by filtering unwanted high-frequency signals. This ensures that the control signals are clear and unaffected by transient disturbances, improving overall system reliability.
Enhancing System Longevity: By preventing the over-voltage and noise conditions that can degrade or destroy electrical components, snubber boards extend the lifespan of critical control components, reducing the frequency of replacements and downtime in turbine operations.
WOC maintains the largest inventory of OEM replacement parts for GE Speedtronic Control Systems, ensuring that you have access to genuine, high-quality components whenever needed. We specialize in providing unused, refurbished, and rebuilt boards, all of which come with a warranty for reliability and performance assurance. Whether you require parts for routine maintenance, system upgrades, or emergency replacements, our comprehensive stock ensures minimal downtime and uninterrupted operation of your control systems. We offer expert repair services for faulty boards, restoring them to full operational condition. Our team of skilled engineers and technicians is available 24/7, providing prompt support for any OEM requirements or automation challenges. For detailed information on part availability, repair services, or pricing, please reach out to our team directly via phone or email, and we will guide you with professional assistance tailored to your operational needs.
What is the function of the board?
The board provides transient suppression, signal conditioning, and electrical isolation for turbine control inputs. It absorbs voltage spikes from inductive loads and filters high-frequency noise. The board ensures clean, stable signals reach the main control logic, preventing false trips and logic errors.
Which control systems are supported?
Compatible with GE Speedtronic Mark IV, Mark V, and Mark VI systems. It interfaces directly with I/O modules and standard turbine sensors. No modifications are required for integration with existing systems.
How are signals connected?
Signals are interfaced via TB1 and TB2 terminal blocks, including pulse rate pickups, breaker relays, E-STOP circuits, and voltage detection inputs. The board conditions and filters these signals, maintaining proper voltage and current levels. It also provides buffering to protect sensitive logic modules.
What transient suppression components are used?
The board uses RC snubber networks, high-voltage capacitors, and resistive damping loads. These components absorb voltage spikes and suppress high-frequency oscillations. This ensures the control logic remains stable during switching events.
