Product Overview

ALSTOM MVAJ105RA0802A is a classic protective relay module developed for power transmission, substation and distribution network protection systems. It continuously monitors grid current, voltage and operating status, and executes fast tripping logic once short circuits, overload and other electrical faults occur, so as to isolate faulty sections and safeguard transformers, generators and transmission lines. After years of continuous running in substations, aging components may cause relay misoperation, failure to respond to faults and hidden grid safety risks. Equipping your maintenance inventory with a fully tested ALSTOM MVAJ105RA0802A spare allows maintenance crews to complete rapid replacement, eliminate hidden dangers and ensure stable and secure power supply.

Key Product Features

• Industrial anti-electromagnetic interference design, stable operation in complex high-voltage substation electromagnetic environments
• Accurate fault detection and quick response capability, effectively cut off faulty circuits to avoid fault expansion
• Stable long-term working performance, adapted to temperature fluctuation and continuous power-on operation conditions
• Standard cabinet installation size, convenient disassembly and direct replacement without large-scale cabinet modification
• Perfect matching with ALSTOM traditional power protection systems, seamless docking of signal loops and logic programs

Main Application Scenarios

ALSTOM MVAJ105RA0802A is widely applied in urban substations, industrial power distribution rooms, hydropower and thermal power plant auxiliary power systems. It serves as the core protection device for power lines, transformers and auxiliary electrical equipment, and is commonly used for daily equipment overhaul, fault replacement and old protection system renovation projects of power grid enterprises and heavy industrial factories around the world.

Supply & Technical Service Support

We supply rigorously tested ALSTOM MVAJ105RA0802A protection relay spare parts. Each unit undergoes power-on test, fault logic simulation detection and comprehensive appearance inspection before delivery to verify complete protection performance. In-stock products support fast global transportation to cope with urgent substation maintenance demands. Our professional technical team provides pre-purchase compatibility confirmation, on-site installation guidance and after-sales technical consultation services. Related parameter manuals and wiring diagrams can be provided upon your request.

Technical Specification Data Sheet