DS3800NHVD - High Voltage Power Supply Board

SPECIFICATIONS:

Part Number: DS3800NHVD
Manufacturer: General Electric
Series: Mark IV
Product Type: High Voltage Power Board
System Voltage: 12 to 48 volts
Max. Channel Current: 750 mA
Max. Channel Input Voltage: Battery Voltage
Size: 8.25 cm high x 4.18 cm
Min Operating Voltage: 8 volts
Voltage Input Range: 90 – 264 VAC
Frequency: 47 – 63 Hz Voltage Output Range
Transient Surge Protection: 1500 W
Voltage Accuracy: ± 50 mV
DIN Rail Attachment: 35 mm
Repair: 3-7 days
Availability: In Stock
Weight: 0.2 kg
Country of Origin: United States

FUNCTIONAL DESCRIPTION:

DS3800NHVD is a High Voltage Power Board manufactured and designed by General Electric as part of the Mark IV Series used in GE Speedtronic Gas Turbine Control Systems. A High Voltage Power Board plays a pivotal role in any industrial control system, especially in turbine operations where precise and stable electrical power is essential. Its primary function is to receive high-voltage input power, typically from an external AC or DC source—and convert, regulate, and distribute that power to various control modules within the system. This includes supplying power to processors, interface boards, relay drivers, and signal conditioning circuits.

The board also incorporates voltage regulation circuits to ensure that the output voltages remain within tightly controlled limits, even if the input voltage fluctuates. This regulation is crucial in protecting sensitive electronic components from damage due to overvoltage or voltage drops. Additionally, the board often features current limiting and short-circuit protection to isolate faults and prevent them from affecting the entire control system.

FUNCTIONS OF HIGH VOLTAGE POWER BOARD:

• Voltage Conversion (AC/DC to Low DC): The High Voltage Power Board (HVPB) is designed to accept high-voltage AC (typically 110–240V) or sometimes DC input, and convert it into regulated low-voltage DC outputs such as +5V, ±15V, and +24V. These voltage levels are essential for powering sensitive electronic components within turbine control systems. This conversion typically involves a combination of transformers, rectifiers, and voltage regulators. The transformer first steps down the high AC voltage, the rectifier converts it to DC, and the regulator ensures a stable output regardless of changes in load or input.

• Power Distribution: After conversion, the power board ensures that the generated low-voltage DC is distributed evenly and reliably to various control system components. This includes central processing units (CPUs), I/O boards, relay drivers, display panels, and communication interfaces. The board includes copper traces and connector terminals that guide the current flow to each component. Efficient power distribution is critical in maintaining synchrony and stability across all turbine control functions.

• Voltage Regulation: Voltage regulation is vital to protect connected modules and to ensure accurate operation. The power board uses precision voltage regulators (like linear regulators or switching regulators) that keep the output voltage constant, even when the input voltage fluctuates or when load demands change dynamically. Without this regulation, sensitive modules could malfunction due to under-voltage or suffer damage due to over-voltage. This function ensures system integrity and reliable turbine performance under varying power conditions.

• Current Limiting: To prevent electrical damage during fault conditions such as short circuits or overloads, the HVPB incorporates current-limiting circuits. These may include resistors, fuses, circuit breakers, or smart ICs that detect when the current exceeds a safe threshold. When such conditions occur, the board either reduces or cuts off power temporarily, protecting downstream components from overheating, electrical arcing, or permanent failure. This feature is especially important in mission-critical environments like turbine controls.

WOC has the largest stock of Replacement Parts for GE Speedtronic Gas Turbine Control Systems. We can also repair your faulty boards and supply unused and rebuilt boards backed up with a warranty. Our team of experts is available around the clock to support your OEM needs. Our team of experts at WOC is happy to assist you with any of your automation requirements. For pricing and availability on parts and repairs, kindly contact our team by phone or email.

FREQUENTLY ASKED QUESTIONS:

What is the purpose of a High Voltage Power Board?

The High Voltage Power Board converts high-voltage AC or DC input into lower, stable DC voltages required by sensitive electronic components in control systems, such as turbine control units. It ensures the system operates reliably and consistently by regulating voltage and distributing power to various subsystems.

What types of input voltages can the High Voltage Power Board handle?

Typically, the board accepts high-voltage AC input in the range of 90-264 VAC (or sometimes DC input). This power is converted to stable, low-voltage DC outputs (e.g., +5V, ±15V, +24V) used by the control system.

How does the High Voltage Power Board regulate voltage?

The board uses voltage regulators (like linear or switching regulators) to ensure that the output voltages remain stable, regardless of fluctuations in input voltage or load demands. This is essential for protecting the connected control modules and ensuring reliable operation.