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SPECIFICATIONS:
Part Number: DS3800HPTR
Manufacturer: General Electric
Series: Mark IV
Product Type: Exciter Gate Driver Card
Input Supply Voltage: 15V to 24V DC
Output Signal: 0-10 V DC
Gate Drive Voltage: 15V to 20V
Output Current: ±2A to ±6A
Max Output Channels: 6-12 outputs
Isolation Voltage: 2.5 kV
Power Supply: 110-240 V AC / 24 V DC
Operating temperature: -30 to 55 degrees Celsius
Size: 8.25 cm high x 4.18 cm
Repair: 3-7 days
Availability: In Stock
Country of Origin: United States
FUNCTIONAL DESCRIPTION:
DS3800HPTR is an Exciter Gate Driver Card manufactured and designed by General Electric as part of the Mark IV Series used in GE Speedtronic Gas Turbine Control Systems. The Exciter Gate Driver Card is a crucial component within the excitation system of synchronous machines, primarily used to control power semiconductor devices such as thyristors or IGBTs. This card receives low-level logic signals from the excitation control unit and translates them into precise high-voltage, high-current gate pulses that are suitable for triggering the power devices. Designed for high reliability, the gate driver card incorporates galvanic isolation, typically using opto-isolators or pulse transformers, to ensure safety and noise immunity between the control circuitry and high-voltage switching elements. In modern systems, these cards often come with embedded protection features, including short-circuit protection, gate monitoring, under-voltage lockout, and temperature sensing, ensuring robust performance in demanding industrial environments. The Exciter Gate Driver Card is essential for enabling fast and reliable switching, accurate control of generator field excitation, and stable power system operation.
INSTALLATION:
The gate driver card is typically mounted on a dedicated slot or PCB area near the power semiconductors it controls. It must be secured with screws or locking mechanisms to prevent vibration-related issues, especially in turbine or generator enclosures. Connection involves interfacing the input terminals with the excitation controller’s firing signals and linking the output terminals directly to the gate and cathode of the associated thyristors or IGBTs. Care should be taken to maintain proper orientation and to match the firing sequences. Shielded cables or twisted pairs are often used for signal wiring to minimize EMI interference.
OPERATIONS:
The card ensures that each pulse is delivered with sufficient energy to fully turn on the device, while also preventing false triggering or misfiring. Advanced driver cards monitor device status and include feedback loops for gate voltage levels, fault signals, and even thermal parameters. In static excitation systems, the gate driver card operates in synchronization with the generator’s voltage and rotor position, ensuring that the correct firing angles are maintained to regulate the DC output. If a fault condition occurs, such as gate failure, overcurrent, or undervoltage, the card can disable output signals and send alerts to the control system to initiate protective actions.
WOC maintains the largest inventory of replacement parts for GE Speedtronic Turbine Control Systems. Additionally, we offer warranty-backed unused and rebuilt boards as well as board repairs for your damaged ones. For your OEM needs, our team of professionals is available around the clock. We at WOC are happy to help you with any needs you may have in terms of automation. Please contact our team by phone or email for pricing and availability on any components and repairs.
What is an Exciter Gate Driver Card?
A Gate Driver Card is a critical component in an exciter system that provides the necessary gate signals to power semiconductor devices like thyristors or IGBTs in synchronous generator excitation systems.
What is the function of the Gate Driver Card in an excitation system?
It amplifies and isolates control signals from the excitation controller to safely and reliably drive the gates of high-power switching devices in the field circuit.
What kind of input voltage does a typical Gate Driver Card require?
Most gate driver cards operate on a low-voltage DC input ranging from 15V to 24V. This voltage powers the internal control circuitry and supplies energy to drive the gates of the power devices.
