Tubular switching arm for rotary disconnectors and similarly constructed switchgear
DE740450C
Multiple spark gap
DE744703C
Surge arresters
DE742587C
Multiple spark gap for surge arrester
DE736799C
Pantographs for electric rail vehicles
DE740124C
Self-coupling manual drive for encapsulated switchgear
DE741400C
Arrangement for load-dependent cooling of converter vessels
DE746525C
Isolating switch with insulating ceramic intermediate piece between drive and cutting knife
DE740036C
High voltage system with warning devices to prevent accidents
DE742321C
Device for monitoring step control devices with switching resistors
DE735984C
Wire welding head with pendulum device
DE743348C
Selection series of resistance elements with different ohms made of metallic resistance building materials
DE738223C
Arc welding clamps
DE740619C
Automatic, purely mechanical reclosing device for an electrical switch that has failed due to a malfunction or overload
DE742264C
Arrangement for combating vibrations in converters with smoothing agent in the direct current circuit
DE744932C
Circuit for energy direction relay to protect three-phase systems fed on two sides
DE746145C
Device for speed control by means of a Ward-Leonard or an on-and-off switching unit
DE740048C
Method for connecting successive welding electrodes of an automatic arc welding device without interrupting the welding operation by heating the electrode ends by means of an electric current
DE742901C
AC shunt collector motor with the capacitance switched on in the secondary circuit
