Inventor
SUZUYAMA HIROSHI
JP10 patents
Patents
10 patentsUS5177664AJan 5, 1993
Gas insulated switchgear
HITACHI LTD24 citations92
US5001599AMar 19, 1991
Gas-insulated switchgear apparatus
HITACHI LTD22 citations91
US5045968ASep 3, 1991
Gas insulated switchgear with bus-section-unit circuit breaker and disconnect switches connected to external lead-out means connectable to other gas insulated switchgear
HITACHI LTD52 citations90
US4862319AAug 29, 1989
Gas-insulated switchgear
HITACHI LTD27 citations90
US5453910ASep 26, 1995
Gas insulated switchgear device
HITACHI LTD22 citations89
US4651255AMar 17, 1987
Connecting system for gas-insulated switchgear apparatus
HITACHI LTD8 citations73
US4888458ADec 19, 1989
Apparatus for disconnecting a switch of a high voltage electric circuit
HITACHI LTD17 citations72
US5134542AJul 28, 1992
Three-phase package-type gas-insulated switch gear having isolators being aligned in a first plane and earthing switches disposed laterally side by side on a second plane
HITACHI LTD10 citations71
US4577075AMar 18, 1986
Earthing switch for gas-insulated switchgear apparatus
HITACHI LTD2 citations61
US5367432ANov 22, 1994
Instrument current transformer for power cables
HITACHI LTD4 citations58