For more information about SHI-11, see the pages of the relay museum museumrza.ru/je...
the video gives a brief description of the step-by-step (rotational) finder SHI-11 manufactured by the Riga State Electrotechnical Plant WEF.
Shi-11 step finders are designed for switching electrical circuits in automatic telephone exchanges (ATS) of a ten-step system. Shi-11 step finders are characterized by only one rotational motion in a closed circle in one direction.
Instruments used in tests:
Power supply: HSPY-400-01 can be purchased here ali.pub/3n0hgx
Негізгі бет Step finder SHI-11. Description of the design and principle of operation
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