Main feed thru unit configured as a service equipment or a main service disconnect for modular metering modules

Patent metadata

Field	Value
Publication number	US-10761114-B2
Application number	US-201715689277-A
Country	US
Kind code	B2
Filing date	Aug 29, 2017
Priority date	Jun 19, 2017
Publication date	Sep 1, 2020
Grant date	Sep 1, 2020

Abstract

A main feed thru unit configured as a service equipment or a main service disconnect is provided for distributing power in modular metering mains. The main feed thru unit comprises an enclosure having a back side, a first side, a second side, a top side and a bottom side and a bus assembly. The bus assembly includes a feed thru bus assembly including a plurality of feed thru bus bars configured to receive line power at feed line terminals and pass thru power to feed thru terminals, a cross bus assembly including a plurality of cross bus bars extending between the first side and the second side and a main breaker coupled between the feed line terminals and the plurality of cross bus bars to feed power thru and output power via the plurality of cross bus bars. The enclosure is configured to allow electrical connection to the plurality of cross bus bars through an opening in at least one of the first side and the second side.

First claim

What is claimed is:

1. A main feed thru unit configured as a service equipment or a main service disconnect, the main feed thru unit comprising:
an enclosure having a back side, a first side, a second side, a top side and a bottom side; and
a bus assembly in the enclosure, the bus assembly including:
a feed thru bus assembly including a plurality of feed thru bus bars configured to receive line power at feed line terminals and pass thru power to feed thru terminals,
a cross bus assembly including a plurality of cross bus bars extending between the first side and the second side, the enclosure configured to allow electrical connection to the plurality of cross bus bars through an opening in at least one of the first side and the second side, and
a main breaker coupled between the feed line terminals and the plurality of cross bus bars to feed power thru and output power via the plurality of cross bus bars.

2. The main feed thru unit of claim 1 , wherein the main feed thru unit is configured to be connected directly to a transformer like as the main service disconnect.

3. The main feed thru unit of claim 1 , wherein the main breaker is mounted on a breaker frame block over A, B and C phase bus such that feed line terminals are connected to a bottom of the main breaker and the feed thru terminals are connected to a top of the main breaker.

4. The main feed thru unit of claim 1 , further comprising:
first and second horizontal barriers that separate a breaker compartment from a top terminal compartment and a bottom terminal compartment.

5. The main feed thru unit of claim 4 , further comprising:
first and second vertical brackets linking the first and second horizontal barriers on the sides of the main breaker such that a neutral (N) is disposed on a right side of the main breaker and a ground bar is laid on back with a link jumper connecting to the neutral (N) in order to use the main feed thru unit as the service equipment.

6. The main feed thru unit of claim 1 , wherein the feed thru terminals and the feed line terminals are supported on perforated metal brackets.

7. The main feed thru unit of claim 1 , wherein in A phase bus connections the feed line terminals are seated on standoffs supported by a perforated metal bracket such that an A phase bottom line terminal is connected to a main breaker bottom terminal via a line connection bus that extends an A phase main breaker terminal to a left terminal bus.

8. The main feed thru unit of claim 7 , wherein on a top (load) side of the main breaker, an A phase feed thru terminal is connected to a front surface of A phase in a breaker frame block through a load connection bus.

9. The main feed thru unit of claim 8 , wherein a riser bus from an A phase of cross bus is connected to a back surface of A phase in the breaker frame block.

10. The main feed thru unit of claim 9 , wherein standoffs are mounted on a metal bracket supporting a middle of the riser bus and the feed thru terminals are mounted on standoffs supported by a metal bracket.

11. The main feed thru unit of claim 1 , wherein a cross bus is disposed on the back side of the enclosure as a power distribution bus that crosses all modular metering modules, the cross bus having spaced bus bars for 3 phases as A, N, B and C bus.

12. The main feed thru unit of claim 1 , wherein in B phase bus connections a B phase bottom (line) terminal is connected to a bottom front surface of B phase in a breaker frame block.

13. The main feed thru unit of claim 12 , wherein a B phase top (load) terminal is connected to a front surface in the B phase on the breaker frame block.

14. The main feed thru unit of claim 13 , wherein a B phase riser bus connecting from a B phase cross bus to a front and a back surface of the B phase in the breaker frame block.

15. The main feed thru unit of claim 1 , wherein in C phase bus connections in that a C phase bus is symmetrical to an A phase bus along a vertical center datum of the main breaker.

Assignees

• Siemens Industry Inc

Inventors

• Zhang Fan
• Shumate Arthur Kevin
• Rusch Brian J
• Harnois Carey D
• Cortes Rico Gustavo

Classifications

• G01R11/04 Primary

  Housings; Supporting racks; Arrangements of terminals · CPC title

• H04M2215/00

  Metering arrangements; Time controlling arrangements; Time indicating arrangements · CPC title

• G01R21/00

  Arrangements for measuring electric power or power factor (G01R7/12 takes precedence) · CPC title

• H02B1/32

  Mounting of devices therein · CPC title

• H02B1/03

  for energy meters · CPC title