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P14DB11A330500A

The Alstom P14DB11A330500A is a high-performance digital protection relay designed for railway traction power supply, substations, and catenary networks. It provides advanced fault detection, metering, and control to ensure safe and reliable power distribution in AC/DC rail electrification systems.

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Key Features
1. Comprehensive Protection Functions
Overcurrent, directional overcurrent, and earth fault protection

Distance protection (impedance-based) for overhead lines

DC traction system protection (1.5kV/3kV DC fault detection)

2. Railway-Specific Adaptations
EN 50155 compliant (railway electronic equipment)

SIL2 certified (EN 50126/8/9 for safety functions)

High immunity to harmonics & transients (EN 50121-3-2)

3. Smart Monitoring & Communication
Real-time metering (voltage, current, power, harmonics)

Event recording & oscillography (up to 1000 fault records)

IEC 61850, Modbus, DNP3, and Ethernet support

4. Rugged & Maintenance-Friendly
-40°C to +70°C operating range (EN 50155 Class TX)

Front-access LCD & keypad for local configuration

Modular design for easy servicing

Technical Specifications
Parameter Specification
Voltage Input 15kV–36kV AC / 1.5kV–3kV DC
Current Input 1A or 5A (configurable)
Protection Speed <20ms for overcurrent faults
Communication Ethernet, RS-485, IEC 61850
Power Supply 24V DC / 110V DC / 220V AC
Certifications EN 50155, IEC 60255, UL 508
Applications
✔ AC/DC traction substations (25kV AC / 1.5kV–3kV DC)
✔ Catenary protection & feeder automation
✔ Railway power distribution networks
✔ Industrial MV switchgear in rail environments

Benefits
✅ High Reliability – Proven Alstom relay technology
✅ Precision Protection – Adaptive algorithms for rail power systems
✅ Seamless Integration – Works with SCADA & Alstom Iconis®
✅ Reduced Maintenance – Self-diagnostics & event logging