Title:
ELECTROMECHANICAL SWITCHING DEVICE AND ARRANGEMENT WITH SEVERAL SUCH DEVICES
Document Type and Number:
WIPO Patent Application WO1996007192
Kind Code:
A3
Abstract:
PCT No. PCT/DE95/01089 Sec. 371 Date May 13, 1997 Sec. 102(e) Date May 13, 1997 PCT Filed Aug. 17, 1996 PCT Pub. No. WO96/07192 PCT Pub. Date Mar. 7, 1996Switching devices can have means for contactless switching position detection. According to the invention, magnetic field sensors arranged at suitable locations inside and/or outside a device housing are provided for switching position detection. In particular, position-dependent magnetic fields are measured for ON/OFF position detection, overcurrent triggering, and contact welding; however, the magnetic field of the current flowing is detected to recognize short-circuit triggering. Differential Hall effect sensors and Reed contacts, respectively, can be used for these purposes. In addition, a sound sensor can be provided for detecting the switching noise, whose signal is evaluated together with the overcurrent triggering signal for short-circuit detection.
Inventors:
POHL FRITZ (DE)
JAEHNER WILFRIED (DE)
JAEHNER WILFRIED (DE)
Application Number:
PCT/DE1995/001089
Publication Date:
May 30, 1996
Filing Date:
August 17, 1995
Export Citation:
Assignee:
SIEMENS AG (DE)
POHL FRITZ (DE)
JAEHNER WILFRIED (DE)
POHL FRITZ (DE)
JAEHNER WILFRIED (DE)
International Classes:
H01H9/16; H01H71/04; H01H71/24; H01H71/50; H02H3/04; H02H5/00; (IPC1-7): H01H71/04; H01H9/16; H01H71/24; H02H3/04; H02H5/00
Foreign References:
| US4706073A | 1987-11-10 | |||
| DE9406897U1 | 1994-06-16 | |||
| US4611201A | 1986-09-09 | |||
| FR2512993A3 | 1983-03-18 | |||
| FR2201470A1 | 1974-04-26 | |||
| EP0226530A2 | 1987-06-24 | |||
| EP0050417A1 | 1982-04-28 | |||
| FR2380652A1 | 1978-09-08 | |||
| FR2217846A1 | 1974-09-06 | |||
| US5051861A | 1991-09-24 |
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