EP 0138082 B1 19880127 - GAS-DISCHARGE ARRESTER AND FABRICATION METHOD
Title (en)
GAS-DISCHARGE ARRESTER AND FABRICATION METHOD
Publication
Application
Priority
DE 3335602 A 19830930
Abstract (en)
[origin: US4665337A] For the reduction of the work function of the electrodes, gas discharge arresters contain an activator which contains, for example, an alkali metal or nickel. Getter materials, for example barium aluminum, serve the purpose of gettering of gases which can arise in the surge voltage arrester during manufacture or during operation. With these substances, the spreads of the minium operating voltage can be maintained small as long as the activator is only moderately heated. For high loads, the activator contains an alkali metal or nickel and, in addition, barium aluminum, whereby tungsten and/or molybdenum is present as the additional substance. An activator of this type guarantees constant values of the minumum operating voltage and a narrow spread of these values even after a high electrical and thermal load. A frequent switching of the maximally permissible current is possible without an interfering alteration of the electrical characteristics.
IPC 1-7
IPC 8 full level
H01J 9/44 (2006.01); H01J 17/04 (2006.01); H01T 1/20 (2006.01); H01T 1/22 (2006.01); H01T 4/00 (2006.01)
CPC (source: EP US)
H01T 1/22 (2013.01 - EP US)
Designated contracting state (EPC)
CH DE FR GB LI SE
DOCDB simple family (publication)
EP 0138082 A1 19850424; EP 0138082 B1 19880127; DE 3335602 A1 19850418; DE 3469119 D1 19880303; JP H0223996 B2 19900528; JP S6095875 A 19850529; US 4665337 A 19870512
DOCDB simple family (application)
EP 84111068 A 19840917; DE 3335602 A 19830930; DE 3469119 T 19840917; JP 20394184 A 19840928; US 65195884 A 19840919