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SU815913A1
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Timer
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SU834618A2
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Device for registering electric values
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SU809002A1
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Device for electric value holding
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SU953621A1
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Threshold device
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SU781720A1
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Device for registering electrical values of emergency mode
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SU681394A1
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Device for clamping electric values
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SU748628A1
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Device for current protection with limited-dependent time delay characteristic
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SU746345A1
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Apparatus for determining distance till damage in power transmission lines
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SU703910A1
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Device for restoring the zero level of signal
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SU672575A1
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Smoothing filter
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SU678581A1
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Device for maximum current protection of high-voltage installation
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SU789821A1
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Apparatus for fixing ratio of two electric values
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SU720557A1
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Timer
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SU641527A1
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Spring drive locking/triggering arrangement
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SU702322A1
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Device for the determination of distance to the damaged point of power transmission lines
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SU705392A1
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Device for locating damages in electric power transmission lines
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SU688948A1
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Power directing relay
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SU720613A1
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Device for supplying relay protection system and automatic equipment
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SU622195A1
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Technical frequency generator
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SU657503A1
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Circuit arrangement for short-circuiting protection of electric mains with sectionated and mains redundancy
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