Integrated power factor correction capacitance unit

• US 20070279015A1
• Filed: 06/05/2006
• Published: 12/06/2007
• Est. Priority Date: 06/05/2006
• Status: Abandoned Application

• Current Assignee: Benshaw, Inc. (Regal Rexnord Corp.)
• Original Assignee: Benshaw, Inc. (Regal Rexnord Corp.)
• Inventors: Schaltenbrand, Bernard J., Livingston, Francis X., Morgan, Peter
• Application Number:
  US11/446,608
• Publication Number:
  US 20070279015A1
• Time in Patent Office: Days
• US Class Current: 323/209
• CPC Class Codes: G05F 1/70 Regulating power factor; Regulating reactive current or power

Abstract

An integrated power factor correction unit incorporates presized, preselected components within a housing structure. The integrated unit is intended to be selected and preassembled according to certain known criteria of the anticipated load and applied as a unit. The unit is also designed to mate easily to the load, both electrically and physically. The unit is further designed to occupy a minimum amount of space for ease of mounting near the load. The unit comprises at least one capacitor and a contactor. A fuse is optional. The unit may be manually or automatically engaged and remotely monitored for status.

Claims

1. An integrated power factor correction unit for electronic association with a load having identified load criteria, comprising:

a housing;

a capacitive unit capable of storing an electric charge which is sized according to said load criteria, said capacitive unit being mounted within said housing;

a contactor switch electrically connected to said capacitive unit which is also sized according to said load criteria, said contactor switch also being mounted within said housing; and

at least one interconnector which provides said electrical connection between said capacitive unit and said contactor switch which is also sized according to said load criteria, said at least one interconnector also being mounted within said housing.

2. An integrated power factor correction unit as described in claim 1, further comprising at least one circuit interrupter which is electrically connected between said contactor switch and the load, said circuit interrupter also being mounted within said housing.

3. An integrated power factor correction unit as described in claim 2, wherein said circuit interrupter is one of at least one fuse and at least one circuit breaker.

4. An integrated power factor correction unit as described in claim 2, wherein said circuit interrupter is sized between 1.6 times the capacitor current and 2.5 times the motor FLA.

5. An integrated power factor correction unit as described in claim 1, wherein said housing is minimally sized while retaining appropriate heat dissipation properties.

6. An integrated power factor correction unit as described in claim 1, further comprising interconnection means between said contactor switch and said load.

7. An integrated power factor correction unit as described in claim 1, wherein the operational range of the unit is between 10 and 200 KVar.

8. An integrated power factor correction unit as described in claim 1, wherein said capacitive unit further comprises a single capacitor.

9. An integrated power factor correction unit as described in claim 1, wherein said capacitive unit further comprises a plurality of capacitors.

10. An integrated power factor correction unit as described in claim 1, wherein said load criteria includes at least one of:

horsepower rating, voltage, the no-load current and the full load amperes.

11. An integrated power factor correction unit as described in claim 1, wherein said capacitive unit is minimally sized by multiplying the full load amperes of the load by a factor of 0.3.

12. An integrated power factor correction unit as described in claim 1, wherein said capacitive unit further comprises a plurality of capacitors connected in a multiple parallel configuration.

13. An integrated power factor correction unit as described in claim 1, wherein said at least one interconnector is further comprised of one of wire or a buss connection.

14. An integrated power factor correction unit as described in claim 13, wherein said interconnector is minimally sized by multiplying the capacitor current by 1.35 and applying that value to the National Electric Code table of wire ampacity.

15. An integrated power factor correction unit as described in claim 1, wherein said contactor switch is further comprised of a main contactor and an auxiliary contactor.

16. An integrated power factor correction unit as described in claim 1, further comprising a terminal interconnection which is electrically connected to said contactor and which is also mounted within said housing.

17. An integrated power factor correction unit as described in claim 16, wherein said terminal interconnection is provided for remote operation of said unit.

18. An integrated power factor correction unit as described in claim 1, further comprising a sensor for detection of the operational status of the unit.