Multi-output device with preset power supply priority

• US 7,196,433 B2
• Filed: 08/08/2002
• Issued: 03/27/2007
• Est. Priority Date: 08/08/2002
• Status: Active Grant

• Current Assignee: Tai-Her Yang
• Original Assignee: Tai-Her Yang
• Inventors: Yang, Tai-Her
• Primary Examiner(s): Sircus; Brian
• Assistant Examiner(s): DESCHERE, ANDREW M
• Application Number:
  US10/214,490
• Publication Number:
  US 20040027003A1
• Time in Patent Office: 1,692 Days
• Field of Search: 307/131, 307/39, 307/35, 700/295
• US Class Current: 307/35
• CPC Class Codes: H02J 2310/58 The condition being electrical
• CPC Class Codes: H02J 3/14 by switching loads on to, or off from, network, e.g. progressively balanced loading
• CPC Class Codes: Y02B 70/3225 Demand response systems, e.g. load shedding, peak shaving
• CPC Class Codes: Y04S 20/222 Demand response systems, e.g. load shedding, peak shaving

Abstract

A multi-output circuit device with preset power supply priority that provides higher safety, wherein, the load of inferior priority depending on the preset overload breaking sequence is cut off first when the total load amperage exceeds the rated amperage while maintaining power supply to the load of superior priority under the operation status of variable local loads.

Claims

1. A multi-output circuit device with preset power supply priority, comprising:

first and second power supply terminals for receiving power from a power source;

first and second conductors;

first and second normally closed overload breaking switches;

a first output interface for conveying electricity to a first load, the first overload breaking switch and first output interface being connected in series between the first and second conductors;

a second output interface for conveying electricity to a second load, the second overload breaking switch and second output interface being connected in series between the first and second conductors; and

connection means for connecting the first power supply terminal to the first conductor and for connecting the second power supply terminal to the second conductor, the connection means including overload actuation mechanism means for opening the first overload breaking switch if the current flowing between the first and second power supply terminals exceeds a first predetermined value and for opening the second overload breaking switch if the current flowing between the first and second power supply terminals exceeds a second predetermined;

value,

wherein the overload actuation mechanism means comprises first and second overload actuation mechanisms that form a logic circuit having priority to supply power, and the current that flows between the first and second power supply terminals also flows through each of the overload actuation mechanisms, and

wherein each of the overload actuation mechanisms comprises an electromagnet.

2. The multi-output circuit device of claim 1, further comprising:

a third normally closed overload breaking switch; and

a third output interface for conveying electricity to a third load, the third overload breaking switch and the third output interface being connected in series between the first and second conductors,

wherein the overload actuation means additionally opens the third overload breaking switch if the current between the first and second power supply terminals exceeds a third predetermined value.

6. The multi-output circuit device of claim 1, wherein each of the overload actuation mechanisms are connected in series.

3. A multi-output circuit device with preset power supply priority, comprising:

first, second, and third power supply terminals for receiving a U phase, a V phase, and a W phase from a power source;

first, second, and third conductors;

a pair of first normally closed overload breaking switches;

a pair of second normally closed overload breaking switches;

a pair of third normally closed overload breaking switches;

a first output interface for conveying electricity to a first three-phase load, one of the first overload breaking switches being connected between the first conductor and the first output interface, one of the second overload breaking switches being connected between the second conductor and the first output interface, and one of the third overload breaking switches being connected between the third conductor and the third output interface;

a second output interface for conveying electricity to a second three-phase load, the other of the first overload breaking switches being connected between the first conductor and the second output interface, the other of the second overload breaking switches being connected between the second conductor and the second output interface, and the other of the third overload breaking switches being connected between the third conductor and the second output interface; and

connection means for connecting the first, second, and third power supply terminals respectively to the first, second, and third conductors, the connection means including overload actuation mechanism means for opening said one of the first overload breaking switches, said one of the second overload breaking switches, and said one of the third overload breaking switches if current supplied via said first, second, and third power supply terminals is greater than a first predetermined value, and for opening said other of the first overload breaking switches, said other of the second overload breaking switches, and said other of the third overload breaking switches if the current supplied via said first, second, and third power supply terminals is greater than a second predetermined value,

wherein the overload actuation mechanism means comprises at least three overload actuation mechanisms that form a logic circuit having priority to supply power, and

wherein each of the overload actuation mechanisms comprises a heating element.

4. The multi-output circuit device of claim 3, further comprising:

another first normally closed overload breaking switch;

another second normally closed overload breaking switch;

another third normally closed overload breaking switch; and

a third output interface for conveying electricity to a third three-phase load, the another first overload breaking switch being connected between the first conductor and the third output interface, the another second overload breaking switch being connected between the second conductor and the third output interface, and the another third overload breaking switch being connected between the third conductor and the third output interface,

wherein the overload actuation mechanism means additionally opens the another first overload breaking switch, the another second overload breaking switch, and the another third overload breaking switch if the current supplied via the first, second, and third power supply terminals is greater than a third predetermined current.

5. A multi-output circuit device with preset power supply priority, comprising:

first, second, and third power supply terminals for receiving a U phase, a V phase, and a W phase from a power source;

first, second, and third conductors;

a pair of first normally closed overload breaking switches;

a pair of second normally closed overload breaking switches;

a pair of third normally closed overload breaking switches;

a first output interface for conveying electricity to a first three-phase load, one of the first overload breaking switches being connected between the first conductor and the first output interface, one of the second overload breaking switches being connected between the second conductor and the first output interface, and one of the third overload breaking switches being connected between the third conductor and the third output interface;

a second output interface for conveying electricity to a second three-phase load, the other of the first overload breaking switches being connected between the first conductor and the second output interface, the other of the second overload breaking switches being connected between the second conductor and the second output interface, and the other of the third overload breaking switches being connected between the third conductor and the second output interface; and

connection means for connecting the first, second, and third power supply terminals respectively to the first, second, and third conductors, the connection means including overload actuation mechanism means for opening said one of the first overload breaking switches, said one of the second overload breaking switches, and said one of the third overload breaking switches if current supplied via said first, second, and third power supply terminals is greater than a first predetermined value, and for opening said other of the first overload breaking switches, said other of the second overload breaking switches, and said other of the third overload breaking switches if the current supplied via said first, second, and third power supply terminals is greater than a second predetermined value,

wherein the overload actuation mechanism means comprises at least three overload actuation mechanisms that form a logic circuit having priority to supply power, and

wherein each of the overload actuation mechanisms comprises an electromagnet.

10. The multi-output circuit device of claim 5, further comprising:

another first normally closed overload breaking switch;

another second normally closed overload breaking switch;

another third normally closed overload breaking switch; and

a third output interface for conveying electricity to a third three-phase load, the another first overload breaking switch being connected between the first conductor and the third output interface, the another second overload breaking switch being connected between the second conductor and the third output interface, and the another third overload breaking switch being connected between the third conductor and the third output interface,

wherein the overload actuation mechanism means additionally opens the another first overload breaking switch, the another second overload breaking switch, and the another third overload breaking switch if the current supplied via the first, second, and third power supply terminals is greater than a third predetermined current.

11. The multi-output circuit device of claim 5, wherein each of the overload actuation mechanisms are connected in series.

7. A multi-output circuit device with preset power supply priority, comprising:

first and second power supply terminals for receiving power from a power source;

first and second conductors;

first and second normally closed overload breaking switches;

a first output interface for conveying electricity to a first load, the first overload breaking switch and first output interface being connected in series between the first and second conductors;

a second output interface for conveying electricity to a second load, the second overload breaking switch and second output interface being connected in series between the first and second conductors; and

connection means for connecting the first power supply terminal to the first conductor and for connecting the second power supply terminal to the second conductor, the connection means including overload actuation mechanism means for opening the first overload breaking switch if the current flowing between the first and second power supply terminals exceeds a first predetermined value and for opening the second overload breaking switch if the current flowing between the first and second power supply terminals exceeds a second predetermined value,

wherein the overload actuation mechanism means comprises first and second overload actuation mechanisms that form a logic circuit having priority to supply power, and the current that flows between the first and second power supply terminals also flows through each of the overload actuation mechanisms, and

wherein each of the overload actuation mechanisms comprises a heating element.

8. The multi-output circuit device of claim 7, further comprising:

a third normally closed overload breaking switch; and

a third output interface for conveying electricity to a third load, the third overload breaking switch and the third output interface being connected in series between the first and second conductors,

wherein the overload actuation means additionally opens the third overload breaking switch if the current between the first and second power supply terminals exceeds a third predetermined value.

9. The multi-output circuit device of claim 7, wherein each of the overload actuation mechanisms are connected in series.