Smart city fiber optic infrastructure
Urban surveillance and traffic monitoring fiber solutions

National Academic Digital Library Of Ethiopia

Browse technical resources about fiber optic infrastructure for smart cities, surveillance, and IoT.

  • Digital Simulation Technology for Relay Protection

    Digital Simulation Technology for Relay Protection

    Real-time digital simulation (RTDS) has become indispensable for validating protection relays, HVDC controls, and inverter-based resource (IBR) controllers before they are deployed on live grids. RTDS Technologies' RSCAD software suite, running on the company's purpose-built NovaCor and PB5. The real-time digital simulator lab provides real-time dynamic simulation of system faults, sequence of events, and/or conditions such as power swings, open poles, out of step conditions and other fault and system conditions. Real-time EMT simulations enable highly efficient, detailed studies of the power system, allowing engineers to anticipate system and device behaviors that threaten the stability. RelaySimTest is a software solution for system-based protection testing with OMICRON test sets. The software simulates realistic operational statuses and faults in the electric network to check whether the protection system is working as it should. Hence, Hardware-in-the-Loop (HIL) testing is an efficient method to perform closed-loop testing of a relay since numerous fault cases can be simulated to provide a realistic operating environment for the relay under test.

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  • Digital Fiber Optic Sensor FX101

    Digital Fiber Optic Sensor FX101

    FX-101 - Optical Sensor NPN - Dark-ON/Light-ON from Panasonic Industrial Automation Sales. View datasheets, pricing and availability from DigiKey now!(Note) When using the interference prevention function, set the emission frequencies for the amplifiers to be covered by the interference prevention function to different frequency values. However, the interference prevention function does not operate at emission frequency 0 (factory default. ● Never use this product as a sensing device for personnel protection. tion applicable in each region or country.


  • National Standard Specifications for Cable Tray Angle Iron Supports

    National Standard Specifications for Cable Tray Angle Iron Supports

    NEC Article 392 covers the requirements for cable tray systems, including the types of trays recognized, which wiring methods can be installed in them, where they can and cannot be used, how they must be supported, and the rules for grounding, cable fill, and ampacity. OBO BETTERMANN has offered prod-ucts and solutions for electrical instal-lation for over 100 years. With our many years of experience, we are one of the leading manufacturers in this field. All illustrations, descriptions and technical information included in this document are provided as indications and can cable trays are equivalent.


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