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DE549861C
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Time-dependent voltage reduction relay
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DE550869C
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Alternating current electromagnet, in which a choke is switched on in the circuit of its magnet winding
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DE481908C
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Insulating body for the complete or partial closure of the feed-through openings in the encapsulation of electrical apparatus
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DE454236C
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Switching arrangement for selective protection of double lines
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DE452862C
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Earth fault relay
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DE471721C
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Relay for alternating current networks
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DE443293C
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Electricity meter with maximum pointer
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DE469831C
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Arrangement for selective protection for double lines
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DE456366C
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Switching arrangement for voltage-dependent overcurrent protection
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DE444025C
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Overcurrent protection arrangement for double and multiple lines
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DE442668C
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High voltage indicator
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DE447242C
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Device for measuring short-circuit voltages
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DE428546C
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Overvoltage protection device
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DE427603C
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Spark gap for combating overvoltages in electrical systems with earth line resistance and earth line disconnection
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DE463798C
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Protection device for parallel high-voltage lines
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DE431133C
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Corona protection device
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DE447902C
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Induction motor counter
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DE440945C
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Selective relay for switching off electrical circuits in the event of a single-phase earth fault
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DE451601C
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Device for the common display of the maximum of two spatially separated measuring points
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DE430400C
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Cell switch
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