The Alstom P127 is a high-reliability power conversion unit designed for critical railway signaling systems. This robust power supply ensures uninterrupted operation of vital trackside equipment in demanding rail environments.
Input: 110/220V AC (85-264V range) or 24/48/110V DC
Output: 24V DC (±1% regulation)
20A continuous current capacity
92% power efficiency
2. Railway-Specific Design
EN 50155 compliant construction
-40°C to +70°C operating range
EN 61373 vibration resistant
IP54 protection rating
3. Advanced Protection Features
Overvoltage/undervoltage protection
Short-circuit and overload protection
Galvanic isolation (3kV input-output)
Redundant configuration options
4. Maintenance & Monitoring
LED status indicators (power, fault, load)
Hot-swappable modules (optional)
Remote monitoring capability
Predictive maintenance support
Technical Specifications
Parameter Specification
Model P127 (AREVA legacy design)
Input Voltage 85-264V AC or 18-36V/88-137V DC
Output Voltage 24V DC ±1%
Output Current 20A continuous
Ripple Noise <1% p-p
Efficiency ≥92% at full load
MTBF >300,000 hours