Quotation PLT : Switchboard Introduction

Switchboard: Overview

Siemens switchboards cover the entire spectrum of customer applications. Every aspect of Siemens switchboard design has been aimed at improving layout convenience, reducing installation costs and minimizing the impact and cost of system changes.

Add devices in same order as electrical flow (incoming, main, branch)
Complex ruleset (Layout rules) determines optimal sections required for the configured devices
- Available standard designs (if more than one layout available, then layout based on narrowest overall lineup)
- Available custom designs
Layout rules create sections, working from incoming down, left to right
Switchboard class (SB1, 2 & 3) is determined based on selected devices, accessories and layout
Lead time based on class and options selected
Pricing is usually updated twice per year: October 1st & April 1st

Switchboard: Configuration .

COMPAS Go Configuration

Description of selection

Switchboard

Designation: Name of board
Certification: UL is standard; cUL is optional. cUL is not the same as CSA!
Regional Code: None is standard; EUSERC for West Coast; Chicago or NYC
Utility Name: List is limited based on Regional Code Selection
System Voltage: All standard voltages are listed – If not in list, add factory mod Most common voltage question is with DC systems… there are limited DC rated devices and 35k IR is max. 65k 500VDC devices do not exist.
System Interrupt Rating: 10k to 200k (200k frames must be welded together in field)
Service Entrance: If there is not a main device ahead of this board
SEM3: Panel mounted 125-1200A devices will automatically have SEM3 when this is selected. (keep in mind that SEM3 CTs may increase section width)

Bussing

Bus Rating: Tapered – Thru bus amperage may be decreased by up to 2/3 of the supply; Non-Tapered – Thru bus will fully rated from supply to last section (this only applies to thru bus and not section bus)
Bus Material: User selection, except when 5000A or 150/200k… these require 1000ASI CU
Bus Plating: Use default, except for WWTP, which use Tin Plated CU (this adds 2+ weeks of lead time)
Bus Bracing: Automatically selected based in system interrupt rating. (usually this is correct, but some specs may show higher bus bracing than interrupt)
Neutral Bus: 100% is standard; 200% is optional (our maximum thru bus rating is 6000A, so cannot have more than 3000A main bus + 200% rated neutral bus… maximum distribution section bus is 4000A, so the max is 2000A main bus + 200% rated neutral bus)
Insulated Bus: Tape wrapped bus – this is an uncommon option that adds 2+ weeks of lead time
Future Conn. Incoming Section: – Forces system to add thru bus in the incoming section
Future Conn. End Section: – In multi-section boards, this will force full width thru bus + fully rated bus
Ground Bus: Defaults to match the main bus, but different material may be selected based on specifications
Ground Type: Ground bus is automatically sized per UL E22578 Table 1, based in main amps, but you may force a specific size based on specifications
Isolated Ground Bus: Standard ground bus is mounted directly to the frame; this option mounts on insulators to keep ground separate from frame

Enclosure

Enclosure Rating:
Seismic Rating: Ip = Importance Factor

OSHPD = California's Office of Statewide Health

Planning and Development Selections:

CBC\IBC 2015 Ip = 1.0 – The structure will survive a seismic event – This is for a typical commercial job.

CBC\IBC 2015 Ip = 1.5 – The equipment will be in working condition after a seismic event – This is typical for a hospital or critical power job.

OSHPD – Requirement for hospitals in California, where shake test required.

Section Height: 90” is standard; 70” is custom
Heaters: Usually used on outdoor boards to remove condensation before startup
Alias Section Labels: Allows manual editing of section #. Used when add to existing, or customer wants different numbering scheme
Alignment: Front & Rear – Standard; Rear – Optional
Section Arrangement: Front Only – Standard
Max Shipping Width: set this value when there are width restrictions in a room. Does not restrict section widths, but will prevent multiple sections from shipping together
Access: Used on drawing to let plant/customer know where there will be access to the connections (usually only important in unusual conditions)
Enclosure Paint: Standard is Grey, but plant can match most color samples
Interior Parts Painted: Painted, rather than raw steel interior supports
Indoor Front Door: 10” front extension (required to clear device handles) and full height front door over for section – Required when indoors with gaskets
Indoor Rear Door: Full height rear door for each section

Enclosure Modification

Floor Plates: Steel plate in bottom of each section
Channel Sills: Steel ‘U’ Channels to raise the section off of the floor
Hinged Gutter Covers: Distribution panel side covers hinged to access the load cables easier
Section Barriers: Steel & glastic vertical section barrier. Automatically added by code where needed; this option will add in all sections
Rodent Resistant: Adds floor plates & screened vents to prevent rodent access
Ventilation Screens: Mesh screens on vents
Ventilation Filters: Filters behind vents
Special Skids: Shipping skids, built per customer specifications
Undercoating: Adds floor plates + protective coating to prevent rust on bottom
Cable Supports: Channel supports for cables
Hoist and Track: Track with hoist running across all sections, used on indoor sections only with draw-out WLs.
Rubber Mat: Work mat in front of main section
Frame Style: Frame gauge is automatically determined based on installed devices + ampacity, but this option specifies minimum gauge of frame structure
Cover Style: Cover gauge is automatically determined based on installed devices + ampacity, but this option specifies minimum gauge of covers
Plexiglass Rear Bus Barriers: Rear barrier will be plexiglass. Select rear bus barrier in section properties
Plexi Barrs Behind Hinged Door: Optional custom barrier behind door mounted auxiliary devices

Product Services

Factory Acceptance Test:

Customer Visual Inspection: Customer may visit the assembly plant and view the completed switchboard lineup
Siemens Standard: Customer may visit the assembly plant and view the Siemens standard testing procedures (contact assembly location for details)
Custom: Customer may specify testing or viewing requirements for plant visit

> Must attach document of custom specifications

> Application review will be required

> Application review step may add price for additional requirements

Options

Panel Layout: Auto – Distribution section type will automatically be selected based on material and amperage, End-Feed – 3000A Max, distribution sections feed from top or bottom; Center-Feed – 4000A Max, distribution sections feed from the center of the riser bus
DAS: click here for DAS
Certified Test Reports: Test reports for each section (this is section only… not devices)
Sm@rt Gear: click here for Sm@rt Gear

Switchboard: Incoming

Add one incoming for each supply to the lineup
Incoming Types:

Cable – Need to know the size & qty of cable customer will use & review based on NEC table 310.15. Also, will it be entering top or bottom of section

Busway – Position & type are required. Coordinate with Spartanburg

Transformer – What type? Coordinate w/ MAP team

Bussplice to existing – Engineering will need existing job # or detailed drawings of existing

Main / Branch

COMPAS defines a main relative the current switchboard lineup

Difference between Main and branch

COMPAS defines a main relative the current switchboard lineup

If a device is feeding other devices in the same switchboard lineup, COMPAS defines it as a main
If a device is feeding an external load (cable or busway), COMPAS defines it as a branch

MLO:

Configuration Steps:

Add Incoming
Add Branches from Main/Branch screen
Click Layout/Design to view layout

Notes:

<2500A will not usually have a pull section added; select pull section required, at incoming level to force a pull section

>2500A will automatically have a pull section

Make sure to add from the Branch list. All devices in a MLO feed external loads!

Is there a main ahead of this board? When service entrance is selected, max # of devices = 6

Single Main w/branches layout

Configuration Steps:

Add Incoming
Add Main from Main list
Add Branches from Branch list
Click Layout/Design to view layout

Make sure to add Main from the Main list

Make sure to add Branches from the Branch list

Individually Mounted Auxiliary Compartment

Compartment mounting type defaults to the mounting type of the device that it is created below
When created below any device where mounting = individual, compartment will default to individual
Multiple components may be placed in a single Individually mounted auxiliary compartment

Dependent on section width (38W compartment will hold more meters than a 20W compartment)
38W individual compartment can hold up to 9 PAC3200 meters

Do not create multiple individual compartments below a single device. Sections may contain a maximum of one individually mounted compartment

Panel Mounted Auxiliary Compartment

Compartment mounting type defaults to the mounting type of the device that it is created below or can be manually set in the properties
KB rules calculate compartment size based on devices
If more devices are required than will fit into a single compartment, they must be added in another compartment.

Navigation - Section Properties

Section Properties are accessed from the Manual Layout tab

Choose Manual Layout View from the configuration tree
Select wrench above section to modify and then choose Section Properties
Update Width, Depth or add Pullbox, IR Viewing Windows or Rear Bus Barriers from the Section Tab
Section Riser Bus may be modified on Distribution sections

Standard DAS is for WL or Sentron only – If you select standard DAS and add a VL main, it will not have DAS
DAS checkbox on breaker must be selected for that breaker to have DAS
An auxiliary compartment is required for the controls on both types of DAS systems
Individually mounted auxiliary compartment will hold DAS + Switch & Lights + Digital Meter + SPD
WL can only support (1) auxiliary compartment; do not add two compartments – layout will fail
Panel mounted aux compartment will fit DAS + Switch & Lights
Panel mounted VL communications compartment will fit Switch & Lights + communication module(s), but not DAS System components
If ‘Use Existing DAS’ compartment is selected, technical review will be required to verify compartment space

COMPAS Support

1. COMPAS Sales Resource Center / Distributor Resource Center (SRC/DRC)

Link for SRC/DRC

2. PB/SB Technical Support and Technical Reviews