Product Overview

The ALSTOM BGTR8HE 24491276A1004​is a specialized power supply module designed as a critical component within ALSTOM’s(now GE Grid Solutions)protection and control systems for electrical substations and power generation facilities.This unit functions as the auxiliary power source for protection relays,control circuits,and communication equipment housed in relay panels and control cubicles.The BGTR8HE​ensures that these vital systems receive clean,stable,and reliable DC power,which is essential for their correct operation during both normal and fault conditions on the power system.Its design prioritizes high availability and fault tolerance to maintain the integrity of the protection scheme even during disturbances in the primary AC supply.

Engineered for integration into ALSTOM’s comprehensive protection system architecture,the BGTR8HE 24491276A1004​typically features a modular design that allows for hot-swappable operation and N+1 redundancy configurations.This means that in a panel with multiple power supply slots,one module can fail or be replaced without de-energizing the entire protection system,a critical feature for maintaining system uptime.The module converts a standard AC or DC input voltage(e.g.,110/240V AC)to a regulated low-voltage DC output(e.g.,24V DC or 48V DC)required by modern numerical relays and other electronic equipment.

The robust construction of the ALSTOM BGTR8HE​ensures reliable operation in the demanding environment of electrical substations,which are characterized by wide temperature variations,electrical noise,and potential voltage transients.The unit incorporates protection features such as overvoltage,undervoltage,and short-circuit protection to safeguard both itself and the connected loads.With its specific part number 24491276A1004,this module is designed for seamless compatibility with other ALSTOM system components,providing a cohesive and dependable power solution for critical infrastructure.

Technical Specifications

Parameter Name

Parameter Value

Product Model

BGTR8HE

Order Number

24491276A1004

Manufacturer

ALSTOM(GE Grid Solutions)

Product Type

Protection System Power Supply Module

Input Voltage

110/240V AC or 125/250V DC(typical)

Output Voltage

24V DC or 48V DC(typical)

Output Power

150W-300W range(typical for this series)

Efficiency

>90%

Power Factor

>0.95

Cooling Method

Convection or fan-assisted

Protections

Overvoltage,Overload,Short-Circuit

Redundancy

Supports N+1 parallel operation

Communication

Alarm contacts(fail,AC fail)

MTBF

High(>100,000 hours)

Operating Temperature

-20°C to+70°C

Storage Temperature

-40°C to+85°C

Safety Standards

IEC/EN 60950,UL 508

EMC Standards

IEC/EN 61000-6-2,IEC/EN 61000-6-4

Installation

DIN Rail or panel mounting

Dimensions

Standard modular form factor

Main Features and Advantages

The ALSTOM BGTR8HE 24491276A1004​delivers exceptional value through its high reliability and modular redundancy capabilities.The ability to operate in parallel with other identical modules to form an N+1 redundant system is a critical advantage for protection systems where power loss is not an option.If one power supply module fails,the remaining units seamlessly share the load,ensuring continuous power to the critical protection and control equipment without any interruption.This design significantly enhances the overall availability of the substation automation system.

Built-in protection and monitoring are cornerstone features.The BGTR8HE​includes comprehensive electronic protections against overvoltage,overload,and short-circuit conditions on its output.These features prevent damage to the module itself and,more importantly,to the expensive and critical protection relays it powers.The module provides dry contact(relay)outputs for alarm signaling,indicating conditions such as general module failure or loss of AC input power.This allows for remote monitoring and immediate notification of issues,enabling proactive maintenance.

The ALSTOM BGTR8HE​is designed for easy integration and serviceability.Its hot-swappable design allows for the replacement of a faulty module without having to power down the entire relay panel,drastically reducing system downtime.The module typically features a plug-in design with robust connectors,simplifying installation and removal.High efficiency results in lower power consumption and reduced heat generation within the panel,contributing to improved reliability of all components and lower operating costs.

Application Field

The ALSTOM BGTR8HE 24491276A1004​is exclusively deployed in electrical power systems,primarily within utility transmission and distribution substations.It is the auxiliary power source for protection relay panels that control and protect high-voltage assets such as power transformers,circuit breakers,transmission lines,and busbars.In these applications,the reliability of the BGTR8HE​is paramount,as a power failure could disable the protection system,leading to uncontrolled fault conditions and potentially widespread blackouts.

In industrial power plants and large industrial facilities with their own high-voltage distribution networks,the BGTR8HE​provides power to the protection systems for generators,large motors,and in-plant distribution feeders.The clean and stable power it supplies ensures that numerical relays can accurately measure currents and voltages and execute complex protection algorithms without being affected by power quality issues.

Furthermore,the module is used in railway electrification systems and traction power substations,where the protection and control of the electrical supply to railway lines is critical for safety and operational continuity.In all these applications,the ALSTOM BGTR8HE 24491276A1004​acts as an unseen but vital component,ensuring that the”brains”of the power system—the protection relays—remain operational at all times.

Related Products

ALSTOM BGTR Series Modules:Other power supply modules in the same series(e.g.,BGTR6HE,BGTR10HE)with different power ratings.

ALSTOM Protection Relays:Relays(e.g.,P14x,L90,T60)that are powered by the BGTR8HE.

ALSTOM Relay Panels:Complete protection panels designed to house the BGTR8HE​and associated relays.

ALSTOM Power Distribution Board:The internal power distribution board within a panel that connects to the BGTR8HE.

GE Grid Solutions Power Supplies:Modern equivalent power supply modules from GE,the successor to ALSTOM’s grid business.

Installation and Maintenance

Pre-installation preparation:Before installing the ALSTOM BGTR8HE 24491276A1004,verify that the input voltage source matches the module’s rating.Ensure the DC output voltage is correct for the connected loads(relays,communication devices).Check that the panel’s power distribution board is compatible and that there is adequate space and ventilation for the module.In redundant configurations,ensure all modules are of the same type and rating for proper current sharing.

Maintenance recommendations:The BGTR8HE​requires minimal maintenance.Periodically check the status indicators(LEDs)on the front of the module for any alarm conditions.Ensure the fan(if present)is free from dust and operates smoothly.In redundant systems,it is good practice to periodically test the redundancy by simulating the failure of one module(e.g.,by removing it)and verifying that the remaining modules continue to power the load without interruption.Keep a spare module on hand to minimize downtime in the event of a failure.

Product Guarantee

We guarantee that the ALSTOM BGTR8HE 24491276A1004​is a genuine component,sourced to meet original manufacturer specifications for performance and reliability in critical power system applications.Our technical support team can provide assistance with integration guidance.We are committed to supplying high-quality power system components that ensure the continuous operation of vital protection and control infrastructure,backed by our dedication to customer success.

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