发明名称 |
METHOD AND DEVICE FOR LIMITING THE CURRENT IN A LIQUID METAL CURRENT LIMITER |
摘要 |
The invention relates to a current limiting method, a current limiting device (1), and a switchgear comprising such a device (1). According to the invention, liquid metal (3) is directed along a resistor element (5) for the current limiting path (31) so as to obtain arc-free current limitation for mains-related fault currents (i(t)). Examples of embodiments include, among other things: an electrical resistance (Rx) that increases in a non-linear manner in the direction of movement (x) of the liquid metal (3) for a smooth current limiting characteristic; a resistor element (5) in the form of a dielectric matrix (5) comprising channels (3a) for the liquid metal (3), and a combined current limiter-circuit breaker (1). Advantages include, among other things: arc-free, reversible current limitation and optional power shutdown; suitable also for high voltages and currents; fast reaction times; reduced wear; and maintenance-friendly. |
申请公布号 |
WO2005006375(A2) |
申请公布日期 |
2005.01.20 |
申请号 |
WO2004CH00416 |
申请日期 |
2004.07.01 |
申请人 |
ABB RESEARCH LTD;NIAYESH, KAVEH;KOENIG, FRIEDRICH |
发明人 |
NIAYESH, KAVEH;KOENIG, FRIEDRICH |
分类号 |
H01H29/00;H01H29/22;H01H53/08;H01H77/10 |
主分类号 |
H01H29/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|