4/1/2015 7:05 AM | |
Joined: 2/16/2015 Last visit: 1/16/2024 Posts: 1 Rating: (0) |
Καλημέρα σας Θα ήθελα να σας ρωτήσω σχετικά για τα reactor. Ποιες είναι οι προϋποθέσεις για να χρησιμοποιήσουμε reactor στην είσοδο και στην έξοδο των inverter? Για παράδειγμα σε ένα έργο χρησιμοποιούμε inverter siemens την σειρά G120. Οι μετασχηματιστές του δικτύου έχουν ρεύμα βραχυκύκλωσης ICC= 65KA. Χρειάζεται να βάλουμε reactor στην είσοδο των inverter? Αν ναι με ποια κριτήρια επιλέγουμε πότε θα βάλουμε reactor και πότε όχι? Ευχαριστώ εκ των προτέρων
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Last edited by: Min_Moderator at: 4/1/2015 10:11:26 AMNew subject after splitting |
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4/1/2015 4:17 PM | |
Joined: 9/27/2006 Last visit: 10/17/2024 Posts: 12289 Rating: (2687) |
Hello George; Unfortunately, documents we have access to are in English. I am sure that you can locate similar articles in Greek if you have trouble understanding them, or try using Google Translate to get the basics of the discussion.:
Difference between Line and Load reactors : http://ecmweb.com/design/line-reactors-and-vfds
A discussion on the merits and side-effects to line reactors used with VFDs :
Finally, a presentation of many elements to consider when selecting a VFD, including reactors:
Top 10 Tips: Specifying VFDs - Machine Design ... Reactors and chokes reduce VFD-related harmonics and line notching, and are recommended for all installations. They also protect the VFD from transient overvoltages, typically caused by utility capacitor switching… Output line, or load, reactors protect motor and cable insulation from VFD short circuits and insulated gate bipolar transistor (IGBT) reflective wave damage. They also allow the motor to run cooler by smoothing the current waveform. Output line reactors are recommended for operating non-inverter duty motors and in which VFD-to-motor wiring exceeds 75 feet. Hope this helps, Daniel Chartier |
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