Name:
FM Approvals 3990:2021 PDF
Published Date:
10/01/2021
Status:
Active
Publisher:
FM Approvals
This standard sets performance requirements for liquid insulated distribution and power transformers, both naturally cooled and transformers utilizing forcibly circulated cooling medium. The standard limits certification for the naturally cooled (KNAN) transformers rated from 5 to 10,000 kVA and 35 kV class or lower. Certification of larger transformers will require the use of forcibly circulated cooling mediums (forced air or forced liquid (water or oil) cooling).
| File Size : | 1 file , 280 KB |
| Note : | This product is unavailable in Ukraine, Belarus, Russia |
| Number of Pages : | 23 |
| Published : | 10/01/2021 |
