IEEE Standard for Overhead-Type Distribution Transformers 500 kVA and Smaller; High Voltage, 34 500 V and Below; Low Voltage, 7970/13 800Y V and Below
NORMA vydaná dňa 30.11.2017
Designation standards: IEEE C57.12.20-2017
Note: NEPLATNÁ
Publication date standards: 30.11.2017
The number of pages: 52
Approximate weight : 156 g (0.34 lbs)
Country: International technical standard
Kategória: Technické normy IEEE