ALSTOM 029.144.456 Advanced Feeder Protection Relay
The ALSTOM 029.144.456 is an enhanced variant of the MicOM P144 feeder protection series, offering expanded input/output capabilities and advanced communication features for critical feeder applications. It retains all core protection functions of the base model while adding flexibility for complex automation schemes.
Key Features
All protection functions of 029.144.440 plus additional directional earth fault elements
16 binary inputs (expandable) for versatile interlocking and status monitoring
10 output relays with programmable trip and signal allocation
Dual‑port Ethernet with PRP/HSR redundancy support for substation automation
Integrated IEC 61850 Edition 2 with GOOSE and sampled values
High‑accuracy metering: 0.5% class for voltage, current, power
Fault oscillography with up to 120 seconds recording
Technical Specifications
Rated current: 1 A / 5 A software selectable
Frequency range: 50/60 Hz adaptive
Protection accuracy: ±1.5% for definite time, ±3% for inverse time
Binary inputs: 16 (24‑250 V DC), galvanically isolated
Output relays: 10 (8 trip rated, 2 signal)
Ethernet ports: 2 x 100Base‑FX (fiber) or 2 x 10/100Base‑T (RJ45)
Serial ports: 2 x RS485 (Modbus, DNP3, IEC 60870‑5‑101/103)
Power supply: dual redundant, 24‑250 V DC or 100‑240 V AC
Applications
This relay is ideal for substations requiring high availability and seamless integration with digital control systems. Typical applications include protection of critical industrial feeders, utility substations with IEC 61850 process buses, and distributed generation interconnections where fast GOOSE‑based protection schemes are needed.
Advanced Integration
The 029.144.456 supports parallel redundancy protocol (PRP) and high‑availability seamless redundancy (HSR), ensuring uninterrupted communication even in case of network failure. Its powerful logic engine allows creation of custom protection and automation functions, reducing the need for external PLCs. The relay also includes cyber‑security features such as role‑based access control and syslog monitoring.
With its enhanced feature set, the ALSTOM 029.144.456 provides a future‑proof solution for modern power networks.
