Interruption circuit with improved shield
First Claim
1. An interrupter circuit for interrupting power from a power source, comprisinga power cable comprising an insulated line wire and an insulated neutral wire;
- said power cable having a conductive shield surrounding said insulated line wire and said insulated neutral wire;
a drain wire having a first and a second portion;
said first portion of said drain wire being non-insulated and in contact with said conductive shield;
an outer insulating layer molded about said conductive shield;
a disconnect switch interposed between the power source and said power cable;
a disconnect switch driver for controlling said disconnect switch; and
a sensing circuit connected between said second portion of said drain wire and said disconnect switch driver for sensing a leakage current between said conductive shield and one of said insulated line wire and said insulated neutral wire for opening said disconnect switch for disconnecting said power cable from the power source
5 Assignments
0 Petitions
Accused Products
Abstract
An interrupter circuit is disclosed for interrupting power in a power cable from a power source. The power cable comprises an insulated line wire and an insulated neutral wire with a conductive shield surrounding the line wire and the neutral wire. A non-insulated drain wire contacts the conductive shield. An outer insulating layer is molded about the conductive shield. A disconnect switch is interposed between the power source and the power cable with a disconnect switch driver controlling the disconnect switch. A sensing circuit is connected between the drain wire and the disconnect switch driver for sensing a leakage current between the conductive shield and one of the insulated line wire and the insulated neutral wire for opening the disconnect switch for disconnecting the power cable from the power source
73 Citations
23 Claims
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1. An interrupter circuit for interrupting power from a power source, comprising
a power cable comprising an insulated line wire and an insulated neutral wire; -
said power cable having a conductive shield surrounding said insulated line wire and said insulated neutral wire; a drain wire having a first and a second portion; said first portion of said drain wire being non-insulated and in contact with said conductive shield; an outer insulating layer molded about said conductive shield; a disconnect switch interposed between the power source and said power cable; a disconnect switch driver for controlling said disconnect switch; and a sensing circuit connected between said second portion of said drain wire and said disconnect switch driver for sensing a leakage current between said conductive shield and one of said insulated line wire and said insulated neutral wire for opening said disconnect switch for disconnecting said power cable from the power source - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. An interrupter circuit for interrupting power from a power source, comprising
a power cable comprising an insulated line wire, an insulated neutral wire, an insulated ground wire; -
said power cable comprising a conductive shield surrounding said insulated line wire, said insulated neutral wire and said insulated ground wire; a drain wire having a first and a second portion; said first portion of said of said drain wire being non-insulated and in contact with said conductive shield; an outer insulating layer molded about said conductive shield; a disconnect switch interposed between the power source and said power cable; a disconnect switch driver for controlling said disconnect switch; and a sensing circuit connected between said second portion of said drain wire and said disconnect switch driver for sensing a leakage current between said conductive shield and one of said insulated line wire and said insulated neutral wire and said insulated ground wire for opening said disconnect switch for disconnecting said power cable from the power source
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22. An interrupter circuit for disconnecting a power source from a load, the power source having a line socket and a neutral socket, comprising:
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a housing having a line lug and a neutral lug for insertion within said line socket and said neutral socket of the power source; a power cord comprising an insulated line wire and an insulated neutral wire; said power cord having a conductive shield surrounding said insulated line wire and said insulated neutral wire; a non-insulated drain wire contacting said conductive shield; an outer insulating layer molded about said conductive shield; a disconnect switch located in said housing interconnecting said line lug and said neutral lug of said housing to said insulated line wire and said insulated neutral wire of said power cord; said disconnect switch having a closed position whereat the power source is connected to the load and having an open position whereat the power source is disconnected from the load; a disconnect switch driver located in said housing for controlling said disconnect switch; and a sensing circuit located in said housing connecting said non-insulated drain wire to said disconnect switch driver for changing said disconnect switch into said open position upon said sensing circuit sensing a leakage current between said conductive shield and one of said insulated line wire and said insulated neutral wire to disconnect said power cord from the power source.
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23. An interrupter circuit for disconnecting a power source from a load, the power source having a line socket, a neutral socket and a ground socket, comprising:
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a housing having a line lug, a neutral lug and a ground lug for insertion within said line socket, said neutral socket and said ground socket of the power source; a power cord comprising an insulated line wire, an insulated neutral wire, an insulated ground wire; said power cord having a conductive metallic foil shield surrounding said insulated line wire, said insulated neutral wire, said insulated ground wire; a non-insulated drain wire contacting said conductive metallic foil shield; an outer insulating layer molded about said conductive metallic foil shield urging mechanical and electrical contact between said conductive metallic foil shield and said non-insulated drain wire; a disconnect switch located in said housing interconnecting said line lug and said neutral lug of said housing to said insulated line wire and said insulated neutral wire of said power cord; and said disconnect switch having a closed position whereat the power source is connected to the load and having an open position whereat the power source is disconnected from the load; a disconnect switch driver located in said housing for controlling said disconnect switch; and a sensing circuit located in said housing connecting said non-insulated drain wire to said disconnect switch driver for changing said disconnect switch into said open position upon said sensing circuit sensing a leakage current between said conductive shield and one of said insulated line wire and said insulated neutral wire to disconnect said power cord from the power source.
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Specification