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Power Communication & Smart Grid – SAS SMART GRID NETWORKS

Power Communication & Smart Grid – SAS SMART GRID NETWORKS

SAS Smart Grid Networks supplies OPGW, ADSS cables, distribution automation, relay protection, fiber sensing, substation comms, line monitoring, and private grid networks for European utilities.

  • How to obtain current for relay protection

    How to obtain current for relay protection

    Isc Function: The short-circuit current is given by Isc = S / (V * PF) Isc_Relay Function: The secondary short-circuit current is given by Isc_Relay = Isc / CT Pickup Function: The relay pickup current is given by Pickup = Relay * VTIsc Function: The short-circuit current is given by Isc = S / (V * PF) Isc_Relay Function: The secondary short-circuit current is given by Isc_Relay = Isc / CT Pickup Function: The relay pickup current is given by Pickup = Relay * VTSelective short-circuit protection can be achieved in different ways, such as: Time-graded protection Time- and current-graded protection A straightforward way of obtaining selective protection is to use time grading. The principle is to grade the operating times of the relays in such a way that. This calculator provides the calculation of short-circuit current and relay pickup current for protective relaying applications. Calculation Example: Protective relaying is a system of devices that detect and respond to abnormal conditions in an electrical power system. Understanding each setting facilitates proper relay coordination. Plug Setting Multiplier (PSM):. LAY S TTIN LAY SETTIN of CT groups fCalculate pickup values, timing curves, coordination time intervals (CTI), and test injection currents for overcurrent (50/51), differential (87), distance (21), and directional (67) protective relays.
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  • What kind of cable is best for the storage FC interface

    What kind of cable is best for the storage FC interface

    As TheCleaner said, the vast majority of fibre storage will be LC/LC, which means you want to get LC/LC cables and ensure than any servers you plug in use LC HBAs (interface card). You probably can't find 2Gb HBAs these days, but a 4Gb or 8Gb HBA will be able to negotiate. OM3/OM4 fiber FC Fibre Channel—supports high rates Because of its high speed, low jitter, and high reliability, Fibre Channel FC has become the first choice for server and storage device connections. With the continuous development of server and storage technology, the speed of Fibre Channel FC is. FC SAN is a high-speed network that connects servers and storage devices, and the Inter Switch-Link joins and maintains the traffic flow between switches and routers. A benefit to FC is its reliability. It typically runs faster per lane with lower latency than Ethernet or SAS interfaces. If the cabling hasn't been properly installed, the network will not function as well as it could — and sometimes won't function at all. Finally, every data center's cabling infrastructure is on a spectrum between a fully scalable, manageable. Fibre Channel is primarily used to connect computer data storage to servers in storage area networks (SAN) in commercial data centers.

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