Short-circuit protection. Determining the prospective short-circuit current at the origin. There are two possible situations:. Isc a. Power kVA. Isc a kA.
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Short-circuit protection. Determining the prospective short-circuit current at the origin. There are two possible situations:. Isc a. Power kVA. Isc a kA. Isc b. Isc c. Isc d. Isc e. Drawn from the Ecodial low-voltage installation-calculation software, produced by. Schneider Electric for fast and precise evaluation of prospective short-circuit currents.
Please consult your regional sales office. Canalis and protection coordination. Drawn from tests specified in standards used in our guides and software , the table. Type of busbar. Circuit-breaker protection. Fuse protection. Isc d Prospective Isc. Prospective Isc. Characteristics of Canalis busbar trunking. Short-circuit withstand. Permissible thermal stress for 0. Rated peak short-circuit current. Canalis KN or KS. Design guide 39 Short-circuit protection Determining the prospective short-circuit current at the origin of the Canalis There are two possible situations: the busbar trunking for lighting is supplied by a secondary switchboard.
DD Isc a : rms short-circuit current across the transformer terminals. Isc c : short-circuit current across circuit-breaker terminals, less than Isc b , limited by circuit breaker. Isc e : prospective short-circuit current, at head of Canalis by the circuit breaker d and the impedance of the Canalis supply cable. Drawn from the Ecodial low-voltage installation-calculation software, produced by Schneider Electric for fast and precise evaluation of prospective short-circuit currents at different points in the circuit.
Canalis and protection coordination Drawn from tests specified in standards used in our guides and software , the table below determines the type of Merlin Gerin circuit breaker or fuse required for a particular type of busbar trunking depending on the prospective short-circuit current at the head of the Canalis trunking.
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The Guiding System, the new way to create your electrical installations A comprehensive offer of products with consistent design The Guiding System is first and foremost a Merlin Gerin product offer covering all electrical distribution needs. However, what makes all the difference is that these products have been designed to operate together: mechanical and electrical compatibility, interoperability, modularity, communication. Thus the electrical installation is both optimised and more efficient: better continuity of supply, enhanced safety for people and equipment, guaranteed upgradeability, effective monitoring and control. Tools to simplify design and implementation With the Guiding System, you have a comprehensive range of tools - the Guiding Tools - that will help you increase your product knowledge and product utilisation. Of course this is in compliance with current standards and procedures. These tools include technical booklets and guides, design aid software, training courses, etc.
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