General purpose and power transformers of the air-cooled, dry, ventilated, and non ventilated types to be used in accordance with the National Electrical Code, ANSI/NFPA 70. Constructions include step up, step down, insulating, and autotransformer type transformers as well as air cooled and dry-type reactors orb) General purpose and power transformers of the exposed core, air-cooled, dry, and compound-filled types rated more than 10 kVA to be used in accordance with the National Electrical Code, ANSI/NFPA 70. Constructions include step up, step down, insulating, and autotransformer type transformers as well as air-cooled, dry, and compound-filled type reactors.

• Year of Declaration: 2018
• Reference: UL 1561: 2015 Fourth Edition
• Number of Pages: 56
• Code: GYS 536
• Version:
• ICS Number: 28.180