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SU1749845A1
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Laser method of measuring refraction channel characteristics
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Device to measure breakdown voltage of valve-type arresters
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Device for measuring breakdown voltage of valve-type arrester
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Device for measuring equipment insulation parameters
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Device for regulation of alternating test voltage
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Device for checking rectifier discharges by leakage current value
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Device for calibrating voltmeters measuring break-down voltage of valve-type lightning arresters
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A.c.voltage-to-a.c.voltage converter for testing installations
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A.c. voltage-to-a.c. voltage converter for testing installations
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Adjustable a.c.voltage converter
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Reversive conuter
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Device for adjusting a.c. voltage
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Device for measuring leak current of valve-type arresters
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Ac voltage regulating device
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Device for adjusting testing ac voltage
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Device for testing valve-type ac arrester
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Thyristorized voltage regulator
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Device for measuring chemical current source short circuiting resistance
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Device for comparing two sequential ac voltage half-waves
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SU855552A1
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Device for measuring breakdown voltage of valve-type arrester
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