ALSTOM P14581AE6M0440J P145 RELÉ TRANSMISOR
ALSTOM P14581AE6M0440J belongs to the MiCOM P145 Feeder Management Relay Transmitter, an integrated measurement, control and protection IED for distribution and transmission lines.
The ALSTOM P14581AE6M0440J integrates fault protection, data transmission, switch control, synchronism check and auto-reclose functions, suitable for overhead lines and cable feeders. This P145 relay transmitter is designed for substation feeder bays. It can independently identify faults, transmit remote signals and support local operation, and can also connect to the substation automation system for coordinated grid logic.
The ALSTOM P14581AE6M0440J is widely used in retrofitting projects of older distribution networks, balancing protection reliability and communication expandability.
Specifications & Parameters
Rated current input: 1A or 5A
Rated voltage range: 100Vac to 120Vac
Auxiliary supply: Wide range 24Vdc to 54Vdc
Hardware enclosure: 60TE standard 4U rack unit, panel flush mounting
Digital inputs: Opto-isolated type
Output contact continuous carrying current: 10A
Communication ports: Ethernet, RS485 K-Bus; supports IEC61850, Courier protocols
Built-in multi-language HMI, event logging, fault recording and measured value transmission output
Operating environment: Indoor switchgear, complies with industrial relay protection EMC standards
Function Description
The ALSTOM P14581AE6M0440J collects line current and voltage signals and executes overcurrent and earth fault protection algorithms.
When a fault is triggered, it issues a trip command and transmits measured values and alarm status to the SCADA host.
It has embedded auto-reclose logic with synchronism check, supporting synchronous closing for ring networks and tie breakers.
Local front-panel keys enable breaker open/close control, setting viewing and signal reset.
The device continuously transmits current, power, frequency and other measured data to provide real-time points for SCADA systems.
GOOSE messaging is supported for inter-bay protection coordination with other IEDs in the same series.
Main Functions & Features
Multi-stage overcurrent and earth fault protection, including definite-time and inverse-time characteristics
Integrated auto-reclose, synchronism check, remote and local control
Measured value transmission: converts primary electrical quantities into digital signals for monitoring platforms
Large-capacity event buffer for fault sequence of events, setting changes and communication status
Multi-protocol parallel communication; Ethernet and serial channels work independently
Programmable logic nodes for custom interlocking and alarm logic
Front panel with operation keys and status LEDs for convenient on-site commissioning
Password-based hierarchical access control to prevent unauthorised setting modification
Differences Between Old and New Versions
The earlier ALSTOM-branded P145 version has limited processor memory, restricted GOOSE data points and only supports the older IEC61850 revision.
The new Agile P145 platform adopts the upgraded XCPU3 processor with expanded memory, supports IEC61850 Ed2, and adds RBAC access control and audit logging. Older P145 units have limited communication port options; new versions offer dual Ethernet, IRIG-B time synchronisation and 1588 PTP precision time synchronisation. Pin layout remains compatible.
The ALSTOM P14581AE6M0440J can be directly drop-in replacement for retrofits without modifying secondary wiring in the cubicle.
New firmware includes enhanced cybersecurity policies to meet modern substation network isolation requirements.
Product Characteristics
The P145 relay transmitter combines protection, control and transmission in one single unit, reducing cubicle installation points.
Opto-isolated hardware inputs reduce mal-operation risks caused by electrical interference.
Multiple setting groups can be stored and switched for different grid operating modes.
Fault recording captures transient waveforms to help maintenance engineers analyse root causes after incidents.
Wide auxiliary power range ensures stable operation at sites with fluctuating DC supply.
Built-in self-supervision; hardware faults and communication loss trigger active alarm transmission.
Advantages
One unit covers protection + transmission + control, reducing spare part SKUs and wiring costs for projects.
Mature setting logic for the P14581AE6M0440J with proven stability across a large installed base.
Flexible communication options compatible with legacy serial SCADA systems and new digital substation architectures.
Drop-in replacement capability shortens retrofit cycles for existing ALSTOM MiCOM P14x installations.
Intuitive HMI for fast commissioning and routine inspection by field technicians.
InterMiCOM peer-to-peer communication supports distributed feeder protection schemes.
Application Scenarios
Feeder protection and monitoring for urban distribution substation bays
Internal power cables and overhead tie lines at industrial plants
Measurement and control for PV and wind farm grid-connection feeders
Outlet bays for mine and chemical plant on-site power stations
Ring main unit and switching station automation retrofits
Replacement projects for legacy substation protection relays
Intended Use
Fast tripping and isolation for phase faults and earth faults on feeders
Continuous electrical parameter acquisition and transmission to dispatch SCADA systems
Auto-reclose after line faults to improve power supply continuity
Synchronism verification before tie-breaker closing to avoid out-of-sync grid impact
Local and remote breaker control with interlock signal reception
Fault data storage for post-incident review and grid operation optimisation
Comparison with Other Models in the Same Series
P141: Basic feeder protection only, no auto-reclose or synchronism check, suitable for simple radial networks
P142: Adds auto-reclose, without synchronism check, mainly for single-source feeders
P143: Equipped with auto-reclose and synchronism check, simplified front-panel controls
ALSTOM P14581AE6M0440J (MiCOM P145): Full set of auto-reclose, synchronism check, enhanced HMI and transmission functions. Ideal for tie lines, ring networks and bays requiring frequent synchronised switching.
The P145 provides more programmable logic resources and larger event storage capacity than earlier models.
Related Compatible Products
MiCOM Px40 communication management units: aggregate signals from multiple relays for dispatch forwarding
MiCOM P890 time synchronisation units: supply IRIG-B time signals
MiCOM P030 test interface module: on-site setting download and fault record retrieval
MiCOM P14x series compatible current transformers and voltage transformers
MiCOM C264 remote gateway: protocol conversion for legacy SCADA systems
FAQ
Q: Can ALSTOM P14581AE6M0440J directly replace old AREVA P145 devices?
A: Pinout and mounting dimensions are compatible, secondary wiring generally remains unchanged. Please verify communication protocol revision and protection settings.
Q: What is the typical latency of measured value transmission for the P145 relay transmitter?
A: Standard electrical measurement refresh cycle is in the order of tens of milliseconds, meeting SCADA acquisition requirements for distribution networks. Fault messages are prioritised for transmission.
Q: Which suffix codes need to be confirmed when ordering ALSTOM P14581AE6M0440J?
A: Enclosure type, auxiliary supply voltage, communication protocol, I/O quantity and firmware feature options.
Q: What time synchronisation methods does this P145 support?
A: IRIG-B hard-wired time sync, SNTP network time sync. New hardware variants support 1588 PTP precision time synchronisation.
Q: Can ALSTOM P14581AE6M0440J be used for motor protection bays?
A: This device is designed for feeder protection. It lacks dedicated motor differential and locked-rotor protection functions. MiCOM P24 series is preferred for motor applications.
Q: Will protection functions stop if the relay loses communication?
A: Protection logic runs independently of communication links. Loss of communication does not affect overcurrent and earth fault tripping.
Q: Can the auto-reclose count and time intervals of the P145 be customised?
A: Reclose attempts, blocking conditions and time delays are fully configurable in the setting menu.
Q: What software tools are required for on-site commissioning after receiving ALSTOM P14581AE6M0440J?
A: MiCOM S1 software for setting configuration, fault record extraction and firmware upgrade, via serial cable or Ethernet commissioning line.
Recommended Products in the Same Series
MiCOM P141 Feeder Management Relay
MiCOM P142 Feeder Management Relay with Auto-Reclose
MiCOM P143 Feeder Management Relay with Auto-Reclose & Synchronism Check
MiCOM P241 Motor Protection Relay
MiCOM P242 Rotating Machinery Protection Relay
MiCOM P441 Distance Protection Relay
MiCOM P442 Line Distance Protection IED
MiCOM P543 Fibre Differential Protection Relay
MiCOM P642 Transformer Protection Relay
MiCOM P741 Busbar Protection Relay
MiCOM C264 Remote Gateway
MiCOM P890 Time Synchronisation Unit
MiCOM P030 Test Interface Module
MiCOM P132 Compact Feeder Protection Relay
MiCOM P14N Next-Generation Feeder Management IED
Notes
Confirm full part number suffix before placing orders. Different suffixes correspond to different I/O counts, communication and hardware options; mismatched variants may fail to meet bay requirements. Install away from high-power contactors, variable frequency drives and other strong interference sources. Check auxiliary supply voltage before power-on commissioning to prevent overvoltage damage to internal boards. Save and back up setting files after modification. For GOOSE inter-device coordination, unify substation VLAN and control block configurations. For long-term idle P145 relay transmitters, perform periodic power-on inspections to avoid internal capacitor ageing.
Product Tags
ALSTOM P14581AE6M0440J, P145 relay transmitter, MiCOM P145, feeder protection relay, feeder management IED, relay transmitter, distribution protection device, line protection and measurement device, MiCOM P14x series, substation protection spare parts
