×

Fuse state indicator systems

  • US 7,855,630 B2
  • Filed: 10/24/2007
  • Issued: 12/21/2010
  • Est. Priority Date: 09/13/2004
  • Status: Active Grant
First Claim
Patent Images

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.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×