Multi-compartment arc-generating electrical equipment using compressible intercompartment cable seals

Patent metadata

Field	Value
Publication number	US-10470329-B2
Application number	US-201715419736-A
Country	US
Kind code	B2
Filing date	Jan 30, 2017
Priority date	Jan 29, 2016
Publication date	Nov 5, 2019
Grant date	Nov 5, 2019

Abstract

An apparatus includes an enclosure comprising first and second abutting compartment and at least one cable passing between the first and second compartments through a sealing multi-cable transit mounted in a wall shared by the first and second compartments. The first compartment may contain arc-generating equipment and the second compartment may contain equipment vulnerable to arc damage. The first compartment may include a medium-voltage cubicle and the second compartment may include a low-voltage control cubicle.

First claim

What is claimed:

1. An apparatus comprising:
an enclosure comprising first and second abutting compartments, wherein the first compartment contains arc-generating medium-voltage equipment of an adjustable frequency drive and wherein the second compartment contains control circuitry of the adjustable frequency drive that is vulnerable to arc damage; and
at least one cable passing between the first and second compartments through a sealing multi-cable transit (MCT) mounted in a wall between the first and second compartments and configured to inhibit transmission of arc gases from the first compartment to the second compartment.

2. The apparatus of claim 1 , wherein the arc-generating medium-voltage equipment contained by the first compartment has an arc rating and wherein the control circuitry contained by the second compartment does not have an arc rating.

3. The apparatus of claim 1 , wherein the at least one cable comprises a plurality of cables.

4. The apparatus of claim 3 , wherein the MCT comprises a plurality of compression modules for respective ones of the plurality of cables and a frame configured to compress the plurality of compression modules to provide a seal where the plurality of cables passes through the wall.

5. An apparatus comprising: an enclosure comprising first and second abutting compartments; arc-generating equipment of an adjustable frequency drive disposed in the first compartment; the adjustable frequency drive comprising control circuitry that is vulnerable to arc damage is disposed in the second compartment; and a plurality of cables passing between the first and second compartments through a sealing MCT mounted in a wall between the first and second compartments and configured to inhibit transmission of arc gases from the first compartment to the second compartment.

6. The apparatus of claim 5 , wherein the arc-generating equipment is medium-voltage equipment.

7. The apparatus of claim 5 , wherein the MCT comprises a plurality of compression modules for respective one of the plurality of cables and a frame configured to compress the plurality of compression modules to provide a seal where the plurality of cables passes through the wall.

8. A method comprising:
disposing first equipment and second equipment of an adjustable frequency drive in respective ones of abutting first and second compartments of an enclosure, wherein the first equipment is arc-generating equipment and wherein the second equipment is vulnerable to arc damage; and
sealing at least one cable passing between the first and second equipment using an MCT mounted in a wall between the first and second compartments and configured to inhibit transmission of arc gases from the first compartment to the second compartment.

9. The method of claim 8 , wherein the first equipment comprises medium-voltage equipment and wherein the second equipment comprises control circuitry.

10. The method of claim 8 , wherein the first equipment comprises equipment having an arc rating and wherein the second equipment comprises equipment that does not have an arc rating.

11. The method of claim 8 , wherein the at least one cable comprises a plurality of cables.

12. The method of claim 11 , wherein the MCT comprises a plurality of compression modules for respective ones of the plurality of cables and a frame configured to compress the plurality of compression modules to provide a seal where the plurality of cables passes through the wall.

Assignees

• Eaton Intelligent Power Ltd

Inventors

• Johnson Wesley Byron

Classifications

• H02B1/308

  Mounting of cabinets together · CPC title

• H02B13/005 Primary

  Electrical connection between switchgear cells · CPC title

• H05K7/1432 Primary

  specially adapted for power drive units or power converters · CPC title

• H05K7/14325

  for cabinets or racks · CPC title