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1. US20080120730 - Fuse and breaker alarm device and method using a finite state machine

Office États-Unis d'Amérique
Numéro de la demande 11602478
Date de la demande 20.11.2006
Numéro de publication 20080120730
Date de publication 22.05.2008
Numéro de délivrance 7633400
Date de délivrance 15.12.2009
Type de publication B2
CIB
G08B 21/00
GPHYSIQUE
08SIGNALISATION
BSYSTÈMES DE SIGNALISATION OU D'APPEL; TRANSMETTEURS D'ORDRES; SYSTÈMES D'ALARME
21Alarmes réagissant à une seule condition particulière, indésirable ou anormale, et non prévues ailleurs
CPC
H01H 85/32
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
85Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
02Details
30Means for indicating condition of fuse structurally associated with the fuse
32Indicating lamp structurally associated with the protective device
H01H 2085/2065
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
85Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
02Details
20Bases for supporting the fuse; Separate parts thereof
2065with base contacts adapted or adaptable to fuses of different lenghts; bases with self-aligning contacts; intermediate adaptation pieces
H02H 3/046
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
3Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection
02Details
04with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
046Signalling the blowing of a fuse
Déposants ADC Telecommunications, Inc.
Inventeurs Coffey Joseph C.
Blichfeldt Brad
Mandataires Merchant &; Gould P.C.
Titre
(EN) Fuse and breaker alarm device and method using a finite state machine
Abrégé
(EN)

An alarm circuit and method of monitoring a circuit protection device are disclosed. The alarm circuit includes a circuit protection device connected in series at an input voltage of a load. The alarm circuit also includes a programmable circuit connected in parallel to the circuit protection device and including an alarm signal. The programmable circuit is programmed to include a plurality of functional states, and at least one functional state corresponds to activation of the alarm signal. The at least one functional state activating the alarm signal corresponds with an interruption condition in the circuit protection device.