High voltage vacuum-type disconnector switch in particular for small-size switch-gears
PL290826A1
Current path of a vacuum switch
PL283414A1
High voltage current measuring transformer with high short-circuit resistance
PL282119A1
Energy accumulating drive for hv disconnector switches
PL281258A1
Current transformer with secondary flow many times higher than the primary flow
PL280066A1
Method of controlling pressure distribution and flow of liquid in a column of circuit-breager with liquid arc-quenching medium
PL276745A1
Method for assessment of the metal oxide varistors properties, as regards their admissible operational voltage and capacity
PL276270A1
Very high current extinguishing chamber connection bushing arrangement with a concentric roller contact
PL271467A1
Solid state voltage regulator for dc or ac generators with battery charging current limiting circuit
PL268880A1
Ac autovalve arrester
PL258140A1
Method of fixing metal fittings on a linkage made composite material having high axial load rating and intended in particular for use in switchgear operation systems
PL255974A1
Autovalve arrester without a discharge gap
PL250835A1
High voltage isolating switch with self-compressing arc-supression system comprising a spring tensioning mechanism operable while opening and spring release mechanism operable while closing the switch
PL248575A1
Medium voltage bus bar type current transformer in particular that made mainly of plastic material
PL246403A1
Fuse link of high breaking capacity for small rated currents
PL245372A1
Extinguishing chamber for a low-oil high-voltage switch with attenuating resistor
PL245318A1
Bushing current transformer with gas insulation,especially for enclosed switchgears
PL245196A1
Gravity or press moulded high-voltage support insulator of plastic material
