Geografia fisica / Harry Robinson ; revisione di G. Barbieri ; [traduzione di M. Barbieri e C. Lomazzo]

• Record Nr.: UNISA990000236460203316
• Autore: Robinson, Harry
• Pubbl/distr/stampa: [Firenze] : Cremonese, copyr. 1978 (stampa 1981)
• Descrizione fisica: XII, 258 p. : ill. ; 20 cm
• Collana: Tascabili economici scolastici ; 0
• Disciplina: 91002
• Collocazione: 910.02 ROB
• Lingua di pubblicazione: Italiano
• Formato: Materiale a stampa
• Livello bibliografico: Monografia

IEEE Std 837-1989 : IEEE Standard for Qualifying Permanent Connections Used in Substation Grounding / / Institute of Electrical and Electronics Engineers

• Record Nr.: UNINA9910135160803321
• Pubbl/distr/stampa: [Place of publication not identified] : , : IEEE, , 1989
• ISBN: 0-7381-3807-X
• Descrizione fisica: 1 online resource
• Disciplina: 621.3193
• Soggetti: Electric connectors - Testing
• Lingua di pubblicazione: Inglese
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Sommario/riassunto: Directions and methods for qualifying permanent connections used for substation grounding are provided. Particular attention is given to the connectors used within the grid system, connectors used to join ; ground leads to the grid system, and connectors used to join the ground leads to equipment and structures. The purpose is to give assurance to the user that connectors meeting the requirements of this standard will perform in a satisfactory manner over the lifetime of the installation provided, that the proper connectors are selected for the application and that they are installed correctly. Parameters for testing grounding connections on aluminum, copper, steel, copper-clad steel, galvanized steel, stainless steel, and stainless-clad steel are addressed. Performance criteria are established, test procedures are provided, and mechanical, current--temperature cycling, freeze--thaw, corrosion, and fault-current tests are specified.