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1. |
Record Nr. |
UNINA990008292010403321 |
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Autore |
Tietenberg, Tom |
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Titolo |
Economia dell'ambiente / Tom Tietenberg ; edizione italiana a cura di Maria Concetta Chiuri, Alessio D'Amato ; traduzione a cura di Carla Hosnar |
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Pubbl/distr/stampa |
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Milano : McGraw-Hill, c2006 |
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ISBN |
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Descrizione fisica |
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Collana |
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Collana di istruzione scientifica , Serie di economia |
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Disciplina |
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Locazione |
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Collocazione |
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L 691 |
60 333.7 TIET 2006 |
62 339.5 TIE |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Nota di bibliografia |
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Glossario: p. 1-10 ; Indice: p. 1-16 |
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2. |
Record Nr. |
UNINA9910137370903321 |
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Titolo |
IEEE Std 22A-1962 (Reaffirmed 1977) : IEEE Guide for the Application of Interrupter Switches to Switch Capacitance Loads / / Institute of Electrical and Electronics Engineers |
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Pubbl/distr/stampa |
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Piscataway, New Jersey : , : IEEE, , 1962 |
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ISBN |
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Descrizione fisica |
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1 online resource (14 pages) |
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Disciplina |
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Soggetti |
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Electric circuit-breakers - Standards |
Electric circuits - Alternating current - Standards |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Sommario/riassunto |
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Usual Temperature and Altitude Service Conditions-Equipment conforming to this Standard shall be suitable for operation at its standard rating, provided that:(a) The temperature of the cooling air (ambient temperature) does not exceed 40C if the equipment has copper-to-copper contacts or equivalent.(b) The temperature of the cooling air (ambient temperature) does not exceed 55C if the equipment has all contacts silver surfaced or equivalent, and in addition has all conducting joints, including terminal connections, either (1) Separately held mechanically, and either soldered or silver surfaced, or (2) Brazed, welded or silver soldered and provided that such operation does not result in temperatures in excess of 90C for class O, 105C for class A or 130C for class Β insulations.( c ) The altitude does not exceed 3300 feet (1000 meters). |
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