GE DS200UPSAG1A EX2000 Power Supply Board

الوصف

The GE DS200UPSAG1A is a specialized circuit board known as a Power Supply Board or UC2000 Power Supply Assembly (¹$\text{UPSA}$).² It is a vital component of the GE EX2000 Excitation Control System and is used in conjunction with the Mark V Speedtronic Turbine Control System.³

⚡ Core Function and Role

The primary purpose of the ⁴$\text{DS200UPSAG1A}$ is to provide stable and reliable low-voltage ⁵$\text{DC}$ power to the logic and control circuitry within the EX2000 excitation system.⁶

• Power Conversion: It is typically a two-stage offline switching power supply (rated around ⁷$\text{100 W}$) that converts a higher ⁸$\text{AC}$ or ⁹$\text{DC}$ input voltage (from the station power or battery) into the multiple, regulated ¹⁰$\text{DC}$ voltages (e.g., ¹¹$\text{+5 V}$, ¹²$\pm \text{15 V}$, ¹³$\pm \text{24 V}$) required by the digital control boards.¹⁴
• System Integrity: By providing clean power, it ensures the continuous and accurate operation of the microprocessors and control logic responsible for regulating the generator’s field current and maintaining stable terminal voltage.¹⁵
• Application: It is integral to the ¹⁶$\text{EX2000}$ series, which controls the excitation system for large industrial generators driven by gas or steam turbines.¹⁷

🛠️ Key Technical Features

The ¹⁸$\text{DS200UPSAG1A}$ board is designed for industrial environments and includes several features for protection and diagnostics:¹⁹

• Processor & Memory: It contains the necessary circuits to manage the power supply process.
• Fuses: It is protected by multiple fuses (e.g., three or four), which are designed to blow and shut down the circuit in the event of an over-voltage or over-current condition.²⁰ (Note: These fuses must only be replaced with the exact specified rating).²¹
• Status Indicator: Includes a ²²$\text{PS OK}$ ²³$\text{LED}$ (²⁴$\text{DS1}$) that illuminates green when the power supply is on and all output voltages are within specified limits.²⁵
• Controls:
  • Reset Button ($\text{SW2}$): Allows the operator to reset the board without removing the input power.²⁶
  • Potentiometer ($\text{RV1}$): A factory-set component used for fine-tuning the voltage output (e.g., adjusting the ²⁷$\text{+5 V}$ output at test point ²⁸$\text{TP5}$).²⁹
• Connectors: Features multiple ³⁰$\text{9-pin}$ connectors (³¹$\text{2PLA}$, ³²$\text{2PLB}$, ³³$\text{2PLC}$) for connecting to the ³⁴$\text{EX2000}$‘s backplane and other boards.³⁵

Safety Warning: Like all power supply boards, the $\text{DS200UPSAG1A}$ contains high-voltage capacitors that can store a lethal electrical charge even after power is removed. Maintenance procedures explicitly require waiting a specified period (e.g., 30 seconds) after power removal before handling the board.³⁶

The GE DS200UPSAG1A is a specialized circuit board known as a Power Supply Board or UC2000 Power Supply Assembly (¹$\text{UPSA}$).² It is a vital component of the GE EX2000 Excitation Control System and is used in conjunction with the Mark V Speedtronic Turbine Control System.³

⚡ Core Function and Role

The primary purpose of the ⁴$\text{DS200UPSAG1A}$ is to provide stable and reliable low-voltage ⁵$\text{DC}$ power to the logic and control circuitry within the EX2000 excitation system.⁶

• Power Conversion: It is typically a two-stage offline switching power supply (rated around ⁷$\text{100 W}$) that converts a higher ⁸$\text{AC}$ or ⁹$\text{DC}$ input voltage (from the station power or battery) into the multiple, regulated ¹⁰$\text{DC}$ voltages (e.g., ¹¹$\text{+5 V}$, ¹²$\pm \text{15 V}$, ¹³$\pm \text{24 V}$) required by the digital control boards.¹⁴
• System Integrity: By providing clean power, it ensures the continuous and accurate operation of the microprocessors and control logic responsible for regulating the generator’s field current and maintaining stable terminal voltage.¹⁵
• Application: It is integral to the ¹⁶$\text{EX2000}$ series, which controls the excitation system for large industrial generators driven by gas or steam turbines.¹⁷

🛠️ Key Technical Features

The ¹⁸$\text{DS200UPSAG1A}$ board is designed for industrial environments and includes several features for protection and diagnostics:¹⁹

• Processor & Memory: It contains the necessary circuits to manage the power supply process.
• Fuses: It is protected by multiple fuses (e.g., three or four), which are designed to blow and shut down the circuit in the event of an over-voltage or over-current condition.²⁰ (Note: These fuses must only be replaced with the exact specified rating).²¹
• Status Indicator: Includes a ²²$\text{PS OK}$ ²³$\text{LED}$ (²⁴$\text{DS1}$) that illuminates green when the power supply is on and all output voltages are within specified limits.²⁵
• Controls:
  • Reset Button ($\text{SW2}$): Allows the operator to reset the board without removing the input power.²⁶
  • Potentiometer ($\text{RV1}$): A factory-set component used for fine-tuning the voltage output (e.g., adjusting the ²⁷$\text{+5 V}$ output at test point ²⁸$\text{TP5}$).²⁹
• Connectors: Features multiple ³⁰$\text{9-pin}$ connectors (³¹$\text{2PLA}$, ³²$\text{2PLB}$, ³³$\text{2PLC}$) for connecting to the ³⁴$\text{EX2000}$‘s backplane and other boards.³⁵

Safety Warning: Like all power supply boards, the $\text{DS200UPSAG1A}$ contains high-voltage capacitors that can store a lethal electrical charge even after power is removed. Maintenance procedures explicitly require waiting a specified period (e.g., 30 seconds) after power removal before handling the board.³⁶