NA 022
DKE German Commission for Electrical, Electronic & Information Technologies of DIN and VDE
Project
Power transformers - Part 21: Standard requirements, terminology, and test code for step-voltage regulators
Abstract
This document describes electrical, mechanical and test requirements of liquid-immersed, single- and three-phase, 50 Hz and 60 Hz, self and forced-air cooled, distribution, overhead and substation, step-voltage regulators, 1 000 kVA (single-phase units) or 3 000 kVA (three-phase units) and smaller, 34 500 volts and below (2 400 V minimum) and their associated controls.
Begin
2026-06-18
Planned document number
DIN IEC 60076-21
Project number
02233969
