GE XDP-221-2 - Excitation Power Supply Module for Mark VI and Mark VIe Control Systems

GE XDP-221-2 – Excitation Power Supply Module for Mark VI and Mark VIe Control Systems

In stock

Product Introduction:
The GE XDP-221-2 is a specialized excitation power supply module designed for GE Mark VI and Mark VIe gas turbine control systems. The “XDP” stands for “Excitation DC Power,” indicating this board provides regulated DC power to the generator’s excitation system. The “221” identifies the specific function (excitation control), and the “2” indicates Revision 2, which includes improved voltage regulation, faster response times, and enhanced diagnostic capabilities compared to Revision 1. This board is critical for controlling the generator’s field current, which directly affects the generator’s output voltage and reactive power. Without proper excitation control, the generator cannot maintain stable voltage under varying load conditions.

Technical Specifications:
Board Type: Excitation Power Supply Module
System Compatibility: GE Mark VI and Mark VIe DCS
Revision: 2 (Enhanced Regulation)
Output Voltage: 0-300V DC (adjustable)
Output Current: 0-10A continuous (up to 15A peak for 10 seconds)
Voltage Regulation: +/- 0.5% (improved from +/- 1% in Revision 1)
Response Time: Less than 10ms for load changes
Input Power: 125V DC from Mark VI power supply
Isolation: 1500V RMS from control circuit to power circuit
Communication: Receives setpoint commands from Mark VI CPU via backplane
Protection: Over-voltage, under-voltage, over-current, short-circuit, and over-temperature
Form Factor: Mark VI VIC bus card (half-width or full-width depending on configuration)
LED Indicators: Status LEDs for output voltage, current, and fault conditions

Functional Features:
Precise Voltage Regulation: Maintains generator output voltage within +/- 0.5% under all load conditions.
Fast Dynamic Response: Responds to load changes in less than 10ms, preventing voltage dips during sudden load increases.
Soft Start: Gradually ramps up excitation voltage to prevent inrush current damage to the generator field winding.
Field Flash Protection: Automatically discharges the generator field in under 1 second during a trip event, preventing insulation damage.
Diagnostic Feedback: Sends detailed fault codes (over-voltage, under-voltage, over-current, communication loss) to the Mark VI CPU.
Redundancy Support: Can be configured in redundant pairs (A/B) for critical generator applications.