Product description
Single-phase step voltage regulators are tap-changing autotransformers. They regulate distribution line voltages with a voltage adjustment range of +20% to ±25%, with 32 steps, each providing an approximate adjustment of 5/8%. Voltage ratings are available from 2400 volts (60 kV BIL) to 34,500 volts(200 kV BIL) for both 60 Hz and 50 Hz systems.
Product Standards
IEEE Std C57.15™Part 21: Standard requirements, terminology, and test code for step-voltage regulators
IEC 60076-21:2018
IEEE C57.12.00-2015™ General Requirements for Liquid-Immersed Distribution, Power, and Regulating Transformers
IEEE C57.12.90-2015 IEEE Standard Test Code for Liquid-Immersed Distribution, Power, and Regulating Transformers
Operating taps comply to IEEE requirements

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