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GE IS200EPDMG1A IS200EPDMG1ABA Power Distribution Module
GE IS200EPDMG1A IS200EPDMG1ABA
The GE IS200EPDMG1A (also known as IS200EPDMG1ABA) is a Power Distribution Module (PDM) in the General Electric (GE) EX2100 series excitation control system, specifically designed for the Mark VI control platform. It supplies 125 V DC power to the control, I/O, and protection boards of the excitation system, and can accept 115 VAC or 125 V DC input with redundant power supply capability.
Key Technical Specifications
- Model: IS200EPDMG1A / IS200EPDMG1ABA
- Rated Voltage: +62.5 V and –62.5 V (125 V DC)
- Input: 1 or 2 channels of 115 VAC (converted to 125 V DC after rectification) or direct 125 V DC
- Output: Capable of powering up to 3 EGPA boards, 1 EXTB board, and 3 EPSM boards; equipped with fuses, on/off switches, and indicator lights
- Dimensions: Approximately 309 mm × 205 mm × 66 mm (Length × Width × Height)
- Weight: Approximately 1.9 kg (about 4.2 lb)
- Operating Temperature: 0 °C ~ 55 °C; Storage Temperature: –40 °C ~ 85 °C
- Material: Aluminum alloy housing, dust-proof and moisture-proof (5% ~ 95% humidity, non-condensing)
Product Features
- Redundant Power Supply: Supports dual AC/DC input channels, ensuring continuous power supply even if one channel fails.
- Modular Design: Compact size for easy installation on the side of the Excitation Power Bus Panel (EPBP), facilitating on-site wiring and maintenance.
- Protection Functions: Each output channel is equipped with a fuse and an on/off switch, featuring overvoltage and short-circuit protection to enhance system reliability.
- Indicator Light Display: Green LEDs visually show the power status of each output, enabling quick diagnosis.
- Strong Compatibility: Suitable for EX2100/Mark VI control systems in coal-fired, gas-fired, nuclear power plants, and renewable energy power plants.
Structure and Components
- Power Input Terminal Block: Receives AC or DC input, with built-in filtering and rectification circuits.
- DC Power Supply Module: Distributes the rectified 125 V DC to each output terminal.
- Output Terminal Block: Supplies power to sub-modules such as EGPA, EXTB, and EPSM; each channel is equipped with a fuse and a switch.
- Indicator Lights and Status Display: Each power channel is equipped with an LED to show the power supply status.
- Mounting Brackets and Fasteners: Used for fixing on the side of the EPBP, enabling quick on-site assembly.
Typical Application Fields
- Power distribution for excitation systems in coal-fired, gas-fired, and nuclear power plants
- Excitation control in renewable energy (wind power, photovoltaic) power plants
- Scenarios requiring high-reliability power supply, such as large industrial boilers and marine power generation
- Power distribution and redundant power supply needs for the Mark VI control platform
Installation and Maintenance Guidelines
- Installation Location: The module should be installed on the side of the EPBP (Excitation Power Bus Panel), ensuring it is adjacent to the DACA (DC/AC Conversion) module to obtain filtered AC/DC power.
- Wiring Requirements: Follow the wiring diagram provided by GE, and use dedicated terminal blocks to connect 115 VAC or 125 V DC input. All AC inputs must be converted to 125 V DC via an external rectifier.
- Power Filtering: The input power must be filtered before being supplied to the module to prevent noise from affecting the excitation control system.
- Indicator Light Check: After power-on, confirm that each green LED is on normally. If any light is off or flickering abnormally, check the corresponding fuse or switch.
- Regular Maintenance: Conduct a visual inspection every 12 months to ensure no terminal corrosion and no loose fasteners. Replace aging fuses if necessary.
- Troubleshooting: If an output channel fails, first check the corresponding fuse and switch. If the issue persists, use an oscilloscope to verify that the input voltage meets the specifications.
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