Product Overview
Alstom L0003604, also referenced as AL129A, is a chopper‑converter power module built for Alspa CE2000 and CE3000 turbine‑generator control systems. It takes raw DC input power and generates multiple isolated, well‑regulated DC supply rails for controller CPU boards, I/O cards and signal processing circuitry within the Alspa rack assembly. This unit is a critical legacy spare part for power‑plant turbine control retrofit and maintenance projects, originally manufactured by Alstom Power (later acquired by GE).
Series
Alspa CE2000 / CE3000 modular control system series for steam, gas and hydro‑turbine governor and protection applications. AL129A (L0003604) serves as dedicated rack power conversion unit for this platform.
Product Features
- Chopper‑based DC‑DC conversion architecture for high‑efficiency power generation of multiple isolated system supply voltages
- Provides stable, filtered DC output power to backplane for CPU, analog I/O and digital logic boards
- Robust industrial hardware design to withstand power‑plant vibration, EMI and temperature fluctuations
- Built‑in over‑voltage, over‑current and over‑temperature fault protection
- Status LED indicators for power‑on and fault diagnostic visibility
- Standard rack slot‑mount form factor, hot‑swap is NOT supported
- Galvanic isolation between input and output circuits to suppress ground‑loop noise
- Fully compatible with original Alspa CE2000 / CE3000 card cage backplane
- Designed for continuous 24‑7 operation inside power‑plant control cabinets
Product Parameters
表格
| Item | Value |
|---|---|
| Part Number | L0003604 (Alias: AL129A) |
| Module Type | Rack Power Conversion Chopper Module |
| System Compatibility | Alspa CE2000, CE3000 turbine control racks |
| Mounting | Slot‑mount inside Alspa card cage |
| Protection Class | IP20 (cabinet‑only installation) |
| Operating Temperature | -10 °C ~ +60 °C |
| Storage Temperature | -40 °C ~ +85 °C |
| Form Factor | Eurocard rack module |
| Certifications | CE, compliant with power‑plant IEC industrial standards |
Product Specifications
- Requires raw DC field input power; generates multiple isolated regulated DC outputs for rack backplane distribution
- No hot‑swap capability: main rack power must be powered‑off before insertion or removal
- Integrated fault detection triggers internal shutdown under over‑current, over‑voltage or thermal overload conditions
- Metal‑cased module for mechanical shielding and heat dissipation
- Interfaces to Alspa proprietary backplane bus for power delivery to all resident controller and I/O cards
- Used as direct replacement spare for failed original AL129A / L0003604 units in legacy power‑plant installations
Function
Accepts unregulated DC input power from plant power sources. Through chopper‑converter circuitry, it converts and conditions power into a set of clean, galvanically‑isolated DC supply voltages. These output rails feed the Alspa rack backplane to power CPU logic, analog measurement circuits and digital I/O modules, sustaining normal turbine‑governor and protection‑system operation. On‑board protective circuits shut down outputs during fault events to prevent collateral damage to adjacent control cards.
Purpose
Deliver reliable multi‑rail isolated power supply for Alspa CE2000 / CE3000 turbine‑generator control racks, supporting governor control, sequence logic and equipment protection for power‑generation assets.
Application Fields
Thermal power plant turbine governor control, combined‑cycle gas‑steam turbine units, hydro‑electric power generation plants, legacy Alspa system spare‑part replacement, power‑plant control‑system modernization and retrofit projects, GE‑Alstom legacy power automation maintenance.Image search keyword: Alstom L0003604 AL129A Alspa CE2000 power conversion module
