| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_62632c1630fb10bb9c66dcd7ec8c5044 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01R15-186
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01R31-58
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01R31-52 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H02H3-042
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H02H3-044
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01R15-00 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01R31-58
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01R15-18 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01R31-50
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G08B21-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H02H3-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01R15-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01R15-14
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01R19-165
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H02H3-04 |
| filingDate |
1991-06-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bb5ed63991d3bafbe0a1909c540eb628
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f9be5901719ea333302eba5bea055e8d
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f1e86fb179acff61b08583f9066cb516 |
| publicationDate |
1993-04-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-0536258-A1 |
| titleOfInvention |
DEFECTIVE CIRCUIT DETECTOR WITH ISOLATED INDICATOR. |
| abstract |
A faulty circuit detector (10) having an electrically isolated and remotely positioned indicator (14) detects fault currents in a controlled conductor (18). When a fault of a predetermined magnitude is detected, a light pulse is transmitted from the detector to the indicator via a fiber optic cable (16) in which, upon reception, the pulse is converted in an electrical impulse causing the indicator to indicate a state of "malfunction". A reset circuit (56) in the indicator resets the indicator at the initial state at regular intervals, in the "normal" state, as long as a predetermined minimum voltage passes through the controlled driver. The detector includes a temperature compensation circuit (150) and a low-pass filter circuit (160) to prevent false operation due to variable ambient temperatures or high frequency transients. A test circuit (48, 50, 34) allows maintenance personnel to test the device in the field with the conductor checked in the supplied state. |
| priorityDate |
1990-06-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |