Fuse State Indicator Systems
First Claim
1. A fuse state indicator comprising:
- a housing containing a circuit board assembly;
an optical isolator mounted to the circuit board assembly;
at least two conductors electrically connected to the optical isolator via the circuit board assembly, said conductors extending from the housing and comprising connectors for electrically connecting to a disconnect device, so as to complete a circuit connecting the optical isolator with a fuse of the disconnect device;
wherein said optical isolator is configured to latch when a voltage differential appears across said circuit and to generate a signal in response thereto; and
an identification element configured to receive said signal from the optical isolator and to transmit a wireless signal to a remote device for indicating an operational state of the fuse.
3 Assignments
0 Petitions
Accused Products
Abstract
Fuse state indicators for use with disconnect devices having a fuse are provided. Fuse state indicators include a housing having circuitry, a detecting means for detecting an open circuit condition, conductors adapted for electrical connection to a disconnect device so as to complete a circuit connecting the detecting means with a fuse of the disconnect device, and a signal transmitting means. The detecting means is configured to transmit a signal to the signal transmitting means for determining an operational state of the fuse. The signal transmitting means, in turn, is configured to transmit a signal to a remote device the state of the fuse.
22 Citations
22 Claims
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1. A fuse state indicator comprising:
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a housing containing a circuit board assembly;
an optical isolator mounted to the circuit board assembly;
at least two conductors electrically connected to the optical isolator via the circuit board assembly, said conductors extending from the housing and comprising connectors for electrically connecting to a disconnect device, so as to complete a circuit connecting the optical isolator with a fuse of the disconnect device;
wherein said optical isolator is configured to latch when a voltage differential appears across said circuit and to generate a signal in response thereto; and
an identification element configured to receive said signal from the optical isolator and to transmit a wireless signal to a remote device for indicating an operational state of the fuse. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A fuse state indicator comprising:
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a housing containing a circuit board assembly;
an optical isolator mounted to the circuit board assembly;
at least two conductors electrically connected to the optical isolator via the circuit board assembly, said conductors extending from the housing and comprising connectors for electrically connecting to a disconnect device, so as to complete a circuit connecting the optical isolator with a fuse of the disconnect device;
wherein said optical isolator is configured to latch when a voltage differential appears across said circuit and to generate a signal in response thereto; and
a signal connector configured to receive said signal from the optical isolator and to transmit an indicating signal to a remote device when said remote device is electrically coupled to the signal connector, said indicating signal for indicating an operational state of the fuse. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A fuse state indicator comprising:
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a housing containing a circuit board assembly;
detecting means for detecting an open circuit condition, said detecting means mounted to the circuit board assembly;
at least two conductors electrically connected to the detecting means via the circuit board assembly, said conductors extending from the housing and comprising connectors for electrically connecting to a disconnect device, so as to complete a circuit connecting the detecting means with a fuse of the disconnect device;
wherein said detecting means is configured to generate a signal in response to detecting an opening of said circuit; and
a signal transmitting means configured to receive said signal from the detecting means and to transmit a signal to a remote device for indicating an operational state of the fuse. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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Specification