Výkonové transformátory - Část 22-5: Příslušenství výkonových transformátorů a tlumivek - Elektrická čerpadla pro transformátory (Norma k přímému použití jako ČSN).
NORMA vydána dne 1.9.2021
Designation standards: ČSN EN IEC 60076-22-5
Classification mark: 351001
Catalog number: 512557
Publication date standards: 1.9.2021
The number of pages: 36
Approximate weight : 108 g (0.24 lbs)
Country: Czech technical standard
Kategorie: Technické normy ČSN
This part of IEC 60076 covers electric pumps used in the cooling circuits of power transformers and reactors. It applies to electric pumps mounted on liquid immersed power transformers according to IEC 60076-1 and reactors according to IEC 60076-6 with and without conservator for indoor or outdoor installation. It outlines the operation requirements for the electrical and hydraulic performance, mechanical design, routine testing and type testing. Additionally, performance and dimensions of preferred sizes of pump sets are specified in informative annexes. The pumps covered in this document are rotodynamic pumps driven by a squirrel cage induction motor that is immersed in the insulating liquid. Pump sets conforming to this document can be of in-line or end suction design