Temperature tripping device

Details Temperature tripping device Temperature tripping device

2008-03-07

2009-08-04

Masih, Karen (Department: 2837)

Electricity: motive power systems

Automatic and/or with time-delay means

Responsive to thermal conditions

C318S455000, C318S442000, C318S445000

Reexamination Certificate

active

07570002

ABSTRACT:
The invention relates to a temperature tripping device for reliably shutting down a load, especially a motor, having at least one input for receiving at least one temperature-dependent sensor signal as an input signal, a first evaluation circuit for generating a first output signal if the input signal reaches a preset value, and means for generating a trip signal if the output signal is generated. In addition, a second, redundant, evaluation channel is provided which is supplied with the same input signal as the first evaluation channel and which generates a second output signal if the input signal reaches the preset value, wherein the means for generating a trip signal are connected to the two evaluation channels and generate the trip signal if at least one of the two output signals is generated.

REFERENCES:
patent: 6259074 (2001-07-01), Brunner et al.
patent: 2005/0128660 (2005-06-01), Dlugosz et al.
patent: 36 14 552 (1987-11-01), None

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