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P142318B2A0150C

The Alstom P142318B2A0150C is a high-performance numerical protection relay specifically engineered for railway power systems, combining advanced protection functions with robust railway-grade durability.

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Key Features
1. Advanced Protection Suite

Multi-stage overcurrent protection (50/51, 50N/51N)

Directional power protection (32)

Thermal overload protection (49)

Inrush current detection and blocking

2. Railway-Specific Enhancements

EN 50155 compliant design (-40°C to +70°C)

SIL2 certified per EN 50126/8/9

Specialized algorithms for traction harmonics

5kV surge protection on all I/O

3. Intelligent Monitoring

Real-time phasor measurement (PMU functionality)

Energy metering (kWh, kVARh)

128-cycle fault recording at 4kHz sampling

Predictive maintenance alerts

4. Connectivity Options

Dual Ethernet ports (IEC 61850 Ed.2)

RS485 with Modbus/DNP3.0

Optical USB for field configuration

GPS time synchronization input

Technical Specifications
Category Specification
Electrical Parameters
Voltage Input 3x 120V AC/DC (range 20-300V)
Current Input 5A or 1A (software selectable)
Frequency Range 16.67Hz/50Hz/60Hz auto-detection
Performance
Operation Time <16ms for instantaneous OC
Accuracy 0.5% for voltage/current
Mechanical
Housing 4U, 19" rack mountable
Weight 8.5kg
Protection Rating IP40 (front), IP20 (rear)
Certifications & Compliance
EN 50155 (Railway rolling stock)

EN 50121-3-2 (EMC)

IEC 60255-149 (Functional safety)

UL 508 (Industrial control)

Typical Applications
AC/DC traction substations

Railway feeder protection

Station power distribution

Catenary monitoring systems

Auxiliary power protection