AOSN autotransformers

AOSN-2, AOSN-8 and AOSN20 are single-phase, dry-type, on-load tap-changing transformers with natural cooling. They are designed for stepless voltage control between 5 and 240 V without circuit breaking in the load under various electrical conditions. These transformers meet the requirements of TU16-671.025-84.

Operating conditions

These autotransformers can be connected to 127 V mains with preservation of the rated load currents. In this case, the secondary voltage control limits are as follows:
- lower limit - below 4 V
- upper limit - above 140 V.

SPECIFICATIONS	AOSN-2	AOSN-8	AOSN-20
Nominal primary voltage, V	220
Secondary voltage control limits, V	5 - 240
Load current, A	2	8	20
Weight, kg built-in transformer stationary transformer	3 3.2	6.3 6.6	16.5
Overall dimensions, mm built-in transformer stationary transformer	210x275x408 220x129x161	189x147x162 220x147x180	375x420x220
Minimum guaranteed service life, years	12

Russian version

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