Product Overview
The ALSTOM C50 is far more than just a piece of hardware;it’s a vigilant guardian of the power grid,a cornerstone of any robust substation automation system.As part of the renowned MiCOM P50 series,this is a highly advanced,multi-functional numerical protection relay engineered to provide comprehensive and high-speed protection for transmission and distribution lines.Unlike a standard PLC that manages processes,the ALSTOM C50 is a specialized device whose sole purpose is to detect and respond to electrical faults with unparalleled speed and precision.
In a power network,faults like short circuits or ground faults can cause catastrophic damage,leading to widespread blackouts and equipment destruction.The ALSTOM C50 constantly monitors electrical parameters such as voltage,current,and phase angles.The moment an anomaly is detected,it executes pre-programmed logic to trip the corresponding circuit breakers,isolating the fault and minimizing damage.Its robust,solid-state design and advanced algorithms make it an ideal replacement for older,electromechanical relays,offering superior reliability,speed,and diagnostic capabilities.When you need to protect high-value assets and ensure grid stability,the ALSTOM C50 is an indispensable component you can rely on.
Technical Specifications
Parameter Name Parameter Value
Product Model C50
Manufacturer ALSTOM(Now GE Grid Solutions)
Product Type Numerical Protection Relay
Application Feeder,Transmission&Busbar Protection
Power Supply 24-250 VDC,48-250 VAC
Current Inputs 1A,5A Nominal(CT dependent)
Voltage Inputs 60-120V,230V Nominal(PT dependent)
Communication Protocols IEC 61850,Modbus,DNP 3.0
Mounting Flush or Rack Mount
Operating Temperature-25°C to+55°C
Export to Sheets
Main Features and Advantages
The ALSTOM C50 is a benchmark in its class,and for good reason.Its feature set is built around the fundamental requirements of modern grid protection:speed,precision,and reliability.
High-Speed Fault Detection:When a fault occurs on the grid,every millisecond counts.The ALSTOM C50 utilizes a high-speed digital signal processor(DSP)to analyze electrical parameters in real-time.This allows it to detect and initiate a trip command with a response time far exceeding that of older electromechanical relays,drastically reducing the arc flash energy and physical damage to equipment.
Comprehensive Protection Functions:This isn’t a one-trick pony.The C50 comes loaded with a comprehensive suite of protection functions,including distance protection(ANSI 21),overcurrent protection(ANSI 50/51),and ground fault protection(ANSI 50N/51N).This multi-layered approach ensures that the relay can handle a wide variety of fault conditions,whether they’re phase-to-phase,phase-to-ground,or three-phase faults,providing a holistic defense for your power lines.
Advanced Communication Capabilities:In today’s interconnected grid,a relay must be able to communicate seamlessly with other devices.The ALSTOM C50 supports a range of standard industrial communication protocols,including IEC 61850,Modbus RTU,and DNP 3.0.This flexibility allows it to integrate effortlessly into any Supervisory Control and Data Acquisition(SCADA)system,enabling remote monitoring,control,and data logging.
Robust Self-Monitoring and Diagnostics:The C50 is designed to not only protect the grid but also protect itself.It includes sophisticated self-diagnostic features that continuously monitor its internal health.If it detects a hardware or software issue,it will log the event and can even send an alarm to the control room,ensuring that potential failures are identified and addressed before they can compromise the system’s integrity.
Application Field
The ALSTOM C50 is a versatile and indispensable component found in critical infrastructure worldwide.Its primary role is to protect power lines and equipment from damaging electrical faults,making it a cornerstone of substation automation.
In high-voltage transmission substations,the ALSTOM C50 is used to protect transmission lines that carry power over long distances.Here,its high-speed operation is critical to prevent cascading failures that could lead to widespread blackouts.In distribution networks,it protects feeder lines that supply power to cities and industrial areas.Its ability to handle a variety of overcurrent and ground fault conditions ensures that localized faults are isolated quickly,minimizing the number of customers affected by an outage.
Beyond traditional utility applications,the ALSTOM C50 is also deployed in industrial power systems,protecting large motors,generators,and transformers in plants that rely on stable power.Furthermore,with the rise of renewable energy,it is being used in wind and solar farms to protect the collector systems and ensure the reliable and safe integration of renewable power into the main grid.Its robust design makes it suitable for deployment in a wide range of environments,from controlled control rooms to remote,harsh outdoor cabinets.
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Related Products
MiCOM P54x:A series of advanced busbar protection relays,often used in conjunction with the C50 to provide comprehensive substation protection.
MiCOM P64x:A transformer protection relay,designed to protect power transformers from internal faults and overloads.
MiCOM P14x:A feeder management relay,providing a balance of protection,control,and monitoring features for feeder applications.
ALSTOM P115:A directional overcurrent and earth fault relay for simpler feeder protection schemes.
ALSTOM K-Relay Series:Older legacy protection relays that the C50 often replaces in substation upgrades.
Installation and Maintenance
Pre-installation preparation:Before you even think about touching the ALSTOM C50,make sure you’ve de-energized the circuit and implemented a strict lock-out/tag-out procedure.Electrical safety is non-negotiable.Verify that the panel cutout dimensions match the relay’s specifications,and double-check all wiring diagrams.Make sure all connections—especially those from the CTs and PTs—are secure and have the correct polarity to prevent misoperation.
Maintenance recommendations:The ALSTOM C50 is built for reliability,but a smart engineer knows that regular checks are key.While it has no moving parts,you should periodically perform functional tests using a relay test set to verify that its protection functions are operating correctly.It’s also a good practice to regularly update the firmware to ensure you have the latest features and security patches.Keep the unit clean and ensure proper ventilation to prevent overheating,which can shorten its lifespan.
Product Guarantee
We stand behind the quality of every ALSTOM C50 relay.Each unit undergoes rigorous testing and quality assurance checks to meet the highest industry standards for performance and durability.We are confident in its ability to protect your most critical assets and ensure the integrity of your power system.Our commitment extends beyond the sale,with expert technical support and a robust after-sales service network ready to assist you.When you choose the ALSTOM C50,you are not just buying a product;you are investing in a partnership focused on reliability,safety,and operational excellence.
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