Source: https://patents.google.com/patent/US6034611A/en
Timestamp: 2020-07-13 01:53:15
Document Index: 176237580

Matched Legal Cases: ['application No. 08', 'application No. 08', 'application No. 08', 'application No. 08', 'application No. 08', 'application No. 08', 'application No. 08', 'application No. 08', 'application No. 08', 'application No. 08', 'application No. 08', 'application No. 08', 'application No. 08', 'application No. 08']

US6034611A - Electrical isolation device - Google Patents
US6034611A
US6034611A US08/794,848 US79484897A US6034611A US 6034611 A US6034611 A US 6034611A US 79484897 A US79484897 A US 79484897A US 6034611 A US6034611 A US 6034611A
US08/794,848
1997-02-04 Application filed by Square D Co filed Critical Square D Co
1997-02-04 Assigned to SQUARE D COMPANY reassignment SQUARE D COMPANY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BROOKS, STANLEY J., DICKENS', JAMES W.
1997-02-04 Priority to US08/794,848 priority Critical patent/US6034611A/en
1997-07-29 Assigned to SQUARE D COMPANY reassignment SQUARE D COMPANY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DICKENS, JAMES W., BROOKS, STANLEY J.
1998-01-23 Priority claimed from EP98903658A external-priority patent/EP1012611B1/en
2000-03-07 Publication of US6034611A publication Critical patent/US6034611A/en
238000002955 isolation Methods 0.000 title claims abstract description 112
230000001012 protector Effects 0.000 claims 14
1. An electrical isolation device for use in an electrical distribution panelboard, said panelboard including at least one line bus and a neutral bus for distributing electrical power to a plurality of branch circuits electrically connected to said panelboard, said isolation device comprising:
a filter providing a low impedance path for an arcing fault signal occurring in any of said branch circuits, said path extending between said at least one line bus and said neutral bus in said panelboard, said path effectively shorting said arcing fault signal at said panelboard and preventing said arcing fault signal from crossing over to any other of said branch circuits.
2. The electrical isolation device of claim 1 wherein said filter comprises a resistor and capacitor in series.
7. In combination, a panelboard for receiving and distributing power from a utility source and an isolation module for said panelboard,
said panelboard receiving said power through at least one line bus and a neutral bus, the panelboard distributing said power from said at least one line bus and said neutral bus to a plurality of branch circuits each having line and neutral conductors for delivering said power to a load,
said isolation module electrically connected to said at least one line bus and neutral bus in said panelboard and comprising:
a resistor and a capacitor connected in series between said at least one line bus and said neutral bus, said resistor and capacitor providing a low impedance path for an arcing fault signal occurring in any of said branch circuits, said path effectively isolating said arcing fault signal to the branch circuit on which it occurred and preventing arcing fault detectors in any other of said branch circuits from detecting said arcing fault signal.
8. In combination, a panelboard for receiving and distributing power from a utility source and an isolation module for said panelboard,
said panelboard receiving said power through a first and second line bus and a neutral bus, the panelboard distributing said power from said first and second line bus and said neutral bus to a plurality of branch circuits each having line and neutral conductors for delivering said power to a load,
said isolation module electrically connected to said first and second line bus and neutral bus in said panelboard and comprising:
a first set of components defining a resistor and capacitor connected in series between said first line bus and said neutral bus;
a second set of components defining a resistor and capacitor connected in series between said second line bus and said neutral bus;
said first and second sets of components providing respective low impedance paths for arcing fault signals occurring in any of said branch circuits, said paths effectively isolating said arcing fault signals to the branch circuits on which they occur and preventing arcing fault detectors in any other of said branch circuits from detecting said arcing fault signals.
9. An electrical isolation device for use in an electrical distribution panelboard, said panelboard including a first and second line bus and a neutral bus for distributing electrical power to a plurality of branch circuits electrically connected to said panelboard, said isolation device comprising:
a first filter and a second filter each comprised of a resistor and capacitor in series and providing a respective low impedance path for an arcing fault signal occurring in any of said branch circuits, one of said paths extending between said first line bus and said neutral bus, the other of said paths extending between said second line bus and said neutral bus each of said respective paths effectively shorting said arcing fault signal at said panelboard and preventing said arcing fault signal from crossing over to any other of said branch circuits;
a first surge protector coupled between first line bus and said neutral bus, said first surge protector protecting said plurality of branch circuits from electrical surges occurring on said first line bus;
a second surge protector coupled between second line bus and said neutral bus, said second surge protector protecting said plurality of branch circuits from electrical surges occurring on said second line bus; and
a display coupled to said first and second filters for indicating the condition of said isolation device, said display comprising a light emitting diode.
10. The electrical isolation device of claim 9 wherein said device is housed within an isolation module connected to said first and second line buses and said neutral bus and mounted to said panelboard.
11. An electrical isolation device for use in an electrical distribution panelboard, said panelboard including at least one line bus and a neutral bus for distributing electrical power to a plurality of branch circuits electrically connected to said panelboard, said isolation device comprising:
filter means for providing a low impedance path for an arcing fault signal occurring in any of said branch circuits, said path extending between said at least one line bus and said neutral bus in said panelboard, said path effectively shorting said arcing fault signal at said panelboard and preventing said arcing fault signal from crossing over to any other of said branch circuits.
12. The electrical isolation device of claim 11 wherein said filter means comprises a resistor and capacitor in series.
16. An electrical isolation device for use in an electrical distribution panelboard, said panelboard including a first and second line bus and a neutral bus for distributing electrical power to a plurality of branch circuits electrically connected to said panelboard, said isolation device comprising:
a first filter and a second filter each providing a respective low impedance path for an arcing fault signal occurring in any of said branch circuits, one of said paths extending between said first line bus and said neutral bus, the other of said paths extending between said second line bus and said neutral bus, each of said respective paths effectively shorting said arcing fault signal at said panelboard and preventing said arcing fault signal from crossing over to any other of said branch circuits.
17. The electrical isolation device of claim 16 wherein said first filter comprises a resistor and capacitor in series and said second filter comprises a resistor and capacitor in series.
18. The electrical isolation device of claim 16 further comprising:
a first surge protector coupled between said first line bus and said neutral bus; said first surge protector protecting said plurality of branch circuits from electrical surges occurring on said first line bus; and
a second surge protector coupled between said second line bus and said neutral bus, said second surge protector protecting said plurality of branch circuits from electrical surges occurring on said second line bus.
19. The electrical isolation device of claim 16 wherein said device is housed within an isolation module connected to said first and second line buses and said neutral bus and mounted to said panelboard.
22. An electrical isolation device for use in an electrical distribution network including at least one line bus and a neutral bus for receiving electrical power from a power source and distributing said electrical power to a plurality of branch circuits, each of said branch circuits including an arcing fault detector for interrupting electrical current in an associated branch circuit upon detecting characteristics of arcing faults in said associated branch circuit, said isolation device comprising:
a filter connected between said at least one line bus and said neutral bus and on a power source side of the arcing fault detector in each of said branch circuits, said filter providing a low impedance path for an arcing fault signal occurring in any of said branch circuits, said path effectively isolating said arcing fault signal to the branch circuit on which it occurred and preventing arcing fault detectors in any other of said branch circuits from detecting said arcing fault signal.
23. The electrical distribution device of claim 22 wherein said filter comprises a resistor and capacitor in series.
27. An electrical isolation device for use in an electrical distribution network including a first and second line bus and a neutral bus for receiving electrical power from a power source and distributing said electrical power to a plurality of branch circuits, each of said branch circuits including an arcing fault detector for interrupting electrical current in an associated branch circuit upon detecting characteristics of arcing faults in said associated branch circuit, said isolation device comprising:
a first and second filter each connected between a respective one of said first and second line buses and said neutral bus on a power source side of the arcing fault detectors in said branch circuits, said first and second filters each providing a low impedance path for an arcing fault signal occurring in any of said branch circuits, each of said paths effectively isolating said arcing fault signal to the branch circuit on which it occurred and preventing arcing fault detectors in any other of said branch circuits from detecting said arcing fault signal.
28. The electrical distribution device of claim 27 wherein said first and second filters each comprises a resistor and capacitor in series.
US08/794,848 1997-02-04 1997-02-04 Electrical isolation device Expired - Lifetime US6034611A (en)
US08/794,848 US6034611A (en) 1997-02-04 1997-02-04 Electrical isolation device
DE69838404T DE69838404T2 (en) 1997-01-24 1998-01-23 Method for detecting arcing faults in a transmission line
AT98903658T AT238564T (en) 1997-01-24 1998-01-23 Arc detection system
AT03008096T AT326072T (en) 1997-01-24 1998-01-23 Integrated protection system with arc flash recording
DE69813842T DE69813842T2 (en) 1997-01-24 1998-01-23 Arc detection system
US08/799,095 Continuation-In-Part US5825598A (en) 1997-02-11 1997-02-11 Arcing fault detection system installed in a panelboard
US08/788,969 Continuation-In-Part US6313642B1 (en) 1995-03-13 1997-01-24 Apparatus and method for testing an arcing fault detection system
US6034611A true US6034611A (en) 2000-03-07
ID=25163863
US08/794,848 Expired - Lifetime US6034611A (en) 1997-02-04 1997-02-04 Electrical isolation device
US (1) US6034611A (en)
US6751076B2 (en) * 2000-07-06 2004-06-15 The Mtl Instruments Group Plc Protection of intrinsically safe circuits
1997-02-04 US US08/794,848 patent/US6034611A/en not_active Expired - Lifetime
U.S. application No. 08/402,575, Mar. 13, 1995, Arcing Fault Detection System and Method (Abandoned). *
U.S. application No. 08/402,678, Mar. 13, 1995, Device and Method for Blocking Selected Arcing Fault Signals (Abandoned). *
U.S. application No. 08/403,033, Mar. 13, 1995, Current Sensing Arcing Fault Detector and Method (Abandoned). *
U.S. application No. 08/403,084, Mar. 13, 1995, Device and Method for Testing Arcing Fault detectors (Abandoned). *
U.S. application No. 08/600,512, Feb. 13, 1996, Arcing Fault Detection System. *
U.S. application No. 08/719,972, Sep. 24, 1996, Arcing Fault Dectector Testing and Demonstration System. *
U.S. application No. 08/788,969, Jan. 24, 1997, Apparatus and Method for Testing an Arcing Fault Detection System. *
U.S. application No. 08/789,659, Jan. 27, 1997, Arcing Fault Detection System for a Secondary Line of a Current Transformer. *
U.S. application No. 08/796,745, Feb. 6, 1997, Split Core Sensor. *
U.S. application No. 08/799,095, Feb. 11, 1997, Arc Fault Detection System Installed in a Panelboard. *
U.S. application No. 08/804,420, Feb. 21, 1997, Arc Fault Trip Indicator for Miniature Circuit Breaker. *
U.S. application No. 08/814,754, Mar. 7, 1997, Arc Fault Detection System. *
U.S. application No. 08/825,005, Mar. 26, 1997, Fault Detection Using Fluctuations in Current Peaks and Subharmonics. *
U.S. application No. 08/827,031, Mar. 25, 1997, Electronically Controlled Circuit Breaker with Integrated Latch Tripping. *
US20180212426A1 (en) 2018-07-26 Disconnection of a String Carrying Direct Current Power
US20170331276A1 (en) 2017-11-16 Electrical Wiring Device With Protective Features
CA2048722C (en) 1998-09-22 Protective circuit and protective plug for telecommunication installations
EP0320411B1 (en) 1993-08-11 Ground fault circuit interrupter
EP1447831B1 (en) 2006-07-12 Device for protecting against overvoltage due to lightning
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BROOKS, STANLEY J.;DICKENS', JAMES W.;REEL/FRAME:008500/0557;SIGNING DATES FROM 19970122 TO 19970130
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BROOKS, STANLEY J.;DICKENS, JAMES W.;REEL/FRAME:008629/0293;SIGNING DATES FROM 19970122 TO 19970130