Fast Bus Busbar Systems March 2010

Busbar System FAST BUS

Applications / Customer BenefitsDescriptionProgram Overview

How to Design a SystemProduct Tips

New Products

© Siemens Industry, Inc 2010 - Subject to modificationsIndustrial AutomationBusbar Systems Fast Bus

2010-03 Slide 2/34

Space Saving Cost-effective Flexibility

8US Busbar Systems


2010-03 Slide 3/34

60 mm Busbar System Basics

Open systems are most common in the U.S

Completely compartmentalized system is more common in Europe

Illustration:3-pole + wiring duct

Systems up to 600 A

Flat Profile insulating barrierRequired by UL in any installation

Possible scenario:

3-pole or 4-pole completely

compartmentalized system

Systems up to 1400 A

With “TT” Busbar and busbar holders


2010-03 Slide 4/34

Busbar System Components

Busbar adapterfor complete direct feeders

Busbar Adapter and Device Holder for complete reversing feeders

Busbar adapters for VL, ED or FXD FBCB Breaker Kits Busbar adapters

for individual components


2010-03 Slide 5/34

Busbar System Components

End Covers, Busbar Covers and Cover ProfilesBusbar and Busbar Holders

Connection terminals Terminal Systems w/cover

PE / N Bus Bar Holders


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Technical Data

Busbar dimension System Continuous current at a busbar temperature of 65°C 85°C 105°Cmm mm A A A20 x 5 60 274 362 43025 x 5 60 327 432 51330 x 5 60 379 500 59520 x 10 60 427 564 67030 x 10 60 573 756 900“TT” profile 60 1020 1020 1600

Uninterrupted current for Busbars , E-Cu bare (at air temp. 35 °C in acc. with DIN 43617)

Technical data for SystemRated insulation voltage 1000 V AC Short-circuit strength of the 8US device adapters of the busbar systems

Current limiting by means of associated circuit-breakers/load feeders up to 50 kA

see Characteristic CurvesMaterial of the 8US1 busbar supports, device adapters and device holders Fiberglass-strengthened polyamideColor RAL 7035, light greyThermal stability of the busbar supports, device adapters and device holders 120 °Cof the AWG connection leads 105 °Cof the cover profiles and end covers 70 °CApprovals Busbar supports, device adapter, device holders and terminals UR, CSA




New Products


2010-03 Slide 8/34

The Fast Bus system

Fast Bus is a 3-phase busbar system for power distribution.

The modular design provides the flexibility needed to fit your application.

Fast Bus also carries domestic and international approvals, which make it ideal for one global panel design.

The Fastbus system can help you save panel space by allowing you to wire and mount circuit protection and motor starters in a tight line.

Leave space for future system expansion. Covering all exposed bus bars with the plastic profile.

Fastbus helps provide for efficient assembly and simple maintenance, reducing down time.. Adapter shoes can be easily snapped on or removed from the Busbars in seconds and many of the starters and circuit breakers come pre-assembled from Siemens.


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The Fast Bus system and UL508A

“Feeder circuit” is the circuit section located upstream from the last short-circuit-proof element (“short circuit protection device” = SCPD).

“Branch circuit” is the circuit section located downstream from the last short-circuit-proof element.

Clearance Creepage distance

Between phases 50.8 mm (2 inches) 25.4 mm (1 inch)

Between phases and grounded,non-isolated metal parts 25.4 mm (1 inch) 25.4 mm (1 inch)

Clearance and creepage distances in acc. with UL508A in the feeder circuit (rated voltage 251- 600V):

When using the Fast Bus busbar system in a power distribution board erected in accordance with UL regulations, it has to be checked whether the application is located in the Feeder or Branch circuit.

Components used in the Feeder circuit require larger clearance and creepage distances than in the branch circuit.


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The Fast Bus system

Current Ratings for standard busbar 1) 5 x 20 mm copper busbar - 362 Amps @ 600V

5 x 25 mm copper busbar - 432 Amps @ 600V



10 x 25mm copper busbar – 660 Amps @ 600V

10 x 30 mm copper busbar - 756 Amps @ 600V TT Profile copper busbar - 1020 Amps @ 600V 2) 1) When using 8US1923-3UA01, FBS400F, FBB60F and FBSXPF Busbar Supports at 85°C

2) When using 8US1943-3AA00

Bracing ratings 1) 65kA 3) bracing ratings at 480V at max 600A w/ 24” between supports 35kA 3) bracing ratings at 600V at max 600A w/ 24” between supports

3) SCCR for 5mm x 20mm and 10mm x 20mm busbars

Factory assemblies for quick installation SIRIUS 3RA Combination Starters (direct & reversing) up to 75HP @ 460V Sentron ED & FXD Circuit Breakers (UL489) up to 250A

Customer assemblies for quick installation SIRIUS 3RA6 Compact Starters up to 20HP @ 480V Siemens VL: DG, FG, JG, LG Circuit Breakers (UL489) up to 600A

3RA

3RA6

ED & FXD

VL




New Products


2010-03 Slide 12/34

Applications

Group Installation according to NEC 430.53One of the most common uses for Fastbus is multi-motor applications.

Fastbus offers a great solution when applied in accordance with National Electric Code section 430.53.

We offer a full line of Main Circuit Breakers from 100 A to 250 A mounted on Fastbus shoe adapters.

Since our 3RV Motor Starter Protectors are listed for Group Installation they eliminate the need for an additional branch circuit protector for each motor

Main Circuit Breaker feeding the Busbar Assembly sized according to NEC 430.52

3RA11 Combination Starters can be used for Single Motor Taps in accordance with NEC 430.53 (D) (3) since the 3RV Manual Motor Controller’s are labeled “Suitable for Tap Conductor Protection in Group installations” as well as Listed for Type E when using the 3RV1928-1H or 3RT1946-4GA07

Busbar cover for covering open Busbar

Branch Circuit Breaker for Power Transformer


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Applications

The Fastbus System reduces installation time and cost by improving mounting density in panels and speeding up installation time with faster mounting and fewer power connections

Ideal for Large Systems


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Applications

Here is a good example of how to control multiple motor loads using Fastbus

Multiple Busbar runs can be connected by using any one of six different 3-pole Lug Plate assemblies. (see ratings)


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Initial Build Cost Savings

Preassembled starters save labor

More condensed panel design

Future Expansion Cost Savings

Mean Time To Repair Savings

Technical Benefits

Customer Benefits


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Commercial Savings: Panel Build Labor

* Information taken from Customer case study

Standard PanelStandard PanelInstall 3 Fuse blocks 1.5 HoursInstall 3 Fuse blocks 1.5 HoursInstall StartersInstall Starters 1.5 Hours 1.5 HoursInstall DisconnectInstall Disconnect 0.5 Hours 0.5 HoursInstall PDBInstall PDB 0.5 Hours 0.5 HoursInstall PlexiglasInstall Plexiglas 1.0 Hours 1.0 Hours

Total Total 5 Hours5 Hours

At $30/Hour – Savings of $90 per PanelAt $30/Hour – Savings of $90 per Panel

SIEMENS PanelSIEMENS Panel

Install BusbarsInstall Busbars 1.0 Hour1.0 HourInstall StartersInstall Starters 0.5 Hours0.5 Hours

Install BreakerInstall Breaker 0.5 Hours 0.5 Hours

Total Total 2 Hours2 Hours


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Commercial Savings: Panel Space

2 INCH WIRING DUCT

3 INC

H W

IRIN

G D

UC

T

5"

MAINCIRCUIT BREAKER

2 INCH WIRING DUCT

21"

40 HP

3HP

34"

23"

3 INC

H W

IRIN

G D

UC

T

FBCB 100M

3RA

1115-1GD

15

3RA

1115-1ED15

3RA

1140-4JD441.5

HP

100 AMPS

1.5 HP

5"

2 INCH WIRING DUCT

19"23"

2 INCH WIRING DUCT

JTN60030

J60100-3COR

BLOCK

40 HP

3 HP

26"

3 INC

H W

IRIN

G D

UC

T

3 INC

H W

IRIN

G D

UC

T

PWR. DIST.

* Information taken from Customer case study

Standard PanelStandard Panel SIEMENS PanelSIEMENS Panel




New Products


2010-03 Slide 19/34

How to Configure Fast Bus for Group Installation

1. Determine Required Load2. Select Method to Power Fastbus

Main lug up to 600A Circuit breakers, 15A to 500A

3. Select any additional circuit breakers or lugs to feed non-motor loads or motors greater than 100A.

4. Select 3RA Combination, Compact Starters, or individual starter components for each motor load.

5. Select Additional Fastbus Adapters for other control components6. Determine the required length of busbar based on component widths and plan

for expansion space. 7. Select appropriate length busbar, busbar supports, end covers and any other

required components.


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Step 1 – Determine total amperage of required loads

Due to the nature of Fast Bus, most applications are considered Group Installation per NEC 430-53

Group Installation is an approach to building multiple motor control systems. In Group Installation, multiple motor starters can be grouped under a short circuit protective device. The 3RA Combination Starters have been UL listed for Group Installation in conjunction with Fast Bus.

Circuit Breaker Selection - Select a circuit breaker (CB) between:

Minimum CB size (per NEC430-110) = Sum of all motor Full Load Currents x 115%Maximum CB size (per NEC430-53c) = 250% x FLC of the largest motor + FLC of all other motors

Fuse Selection - Calculate the maximum fuse size per NEC 430-53c:

Maximum Fuse size = 175% x FLC of the largest motor + FLC of all other motors

A. Review the specification or line drawing to determine all of the loads in the circuitB. Use the calculations below to determine the size to the Short Circuit Protective Device


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Step 2 – Select Method to Power Fast Bus

For Short Circuit Protection from 50 to 250A, we recommend using the FBCB***M Main Circuit breakers kits–

These circuit breakers have the Fast Bus wires on the load side. Incoming power wires can be fed through the top of the enclosure directly to the line terminals of the circuit breaker. A Rotary or Max-Flex handle operator can be added to disconnect and lock the breaker in the off position.

For Short Circuit Protection from up to 500A, we offer the VL Circuit breakers on Fast Bus Adapters – see slide 30These Fast Bus adapters offer user flexibility in making electrical connections on the line or load side of the breaker.

For Short Circuit Protection greater than 500A, use the Three Pole Lug Plate assembly with cover –

Provides terminals for the incoming supply from a separately mounted Circuit Breaker or Fuse Block. These lug kits could also be used to jumper from one run of Fast Bus to another.

Panel mount circuit breaker or fuse block over 500A

Breaker Rating Width SCCR 480V

FBCB050M 50A 140mm 25kAFBCB060M 60A 140mm 25kAFBCB070M 70A 140mm 25kAFBCB090M 90A 140mm 25kAFBCB100M 100A 140mm 65kAFBCB125M 125A 140mm 65kAFBCB150M 150A 140mm 65kAFBCB175M 175A 140mm 65kAFBCB200M 200A 140mm 65kAFBCB225M 225A 140mm 65kAFBCB250M 250A 140mm 65kA

Add “HB” to above (eg. FBCB250M-HB) for High Interrupting versions 100A-250A only. (see next slide)

Lug Kit Rating Width SCCR 480VFBT600F 560A 180mm 65kA

Feeder Circuit Compliant

Other ratings availableSee page 5/6 of the 2010 Controls Catalog


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Step 3 – Choosing additional CB’sPre-assembled on Shoes or Kits ready to go

Item Number Suffix Description: Blank = Feeder or Branch Circuit with adaptor terminals at the topH: = Feeder or Branch Circuit Higher Interrupt with adaptor terminals at the topM: = Main Circuit Breaker with adaptor terminals at the bottomM-HB: = Main Circuit Breaker w/ higher interrupt and adaptor terminals at the bottom

Feeder CBMain CB

1. These ratings apply to circuit breaker shoes used either as feeder circuit breakers (power taken from the load side of the circuit breaker to other equipment) or main circuit breakers (power applied to the bus from the circuit breaker). 2. Kits are pre-assembled up to 90A. Kits above 90A require shoe to be torqued to busbar prior to assembly. 3. Circuit Breakers are 80% rated.4. Interrupt ratings based on Circuit Breaker.

Notes:

Sentron RatingsBreaker (A)Frame 480V Max 600V Max

FBCB015 - 125 ED 15-125 25 18FBCB150 FXD 150 35 22FBCB175 FXD 175 35 22FBCB200 FXD 200 35 22FBCB225 FXD 225 35 22FBCB250 FXD 250 35 22FBCB020H - 080H HHED 20-80 65 18FBCB50M - 90M ED 50-90 25 18FBCB100M FXD 100 65 25FBCB125M FXD 125 65 25FBCB150M FXD 150 65 25FBCB175M FXD 175 65 25FBCB200M FXD 200 65 25FBCB225M FXD 225 65 25FBCB250M FXD 250 65 25FBCB100M-HB HHED 100 65 25FBCB125M-HB HHED 125 65 25FBCB150M-HB HFXD 150 65 25FBCB175M-HB HFXD 175 65 25FBCB200M-HB HFXD 200 65 25FBCB225M-HB HFXD 225 65 25FBCB250M-HB HFXD 250 65 25

Short Circuit RatingsItem Number Current (kA)


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Step 4 – Select Combination Starters

Fully assembled Starters: Non-reversing or reversing motor? Full Load Current of the motor? Control Voltage? Number of auxiliary contacts required on the MSP and on the Contactor?

The 3RA devices can be ordered without any auxiliaries or they can be ordered with one SPDT contact block that plugs into the top front of the MSP and one NO contact block that mounts to the front of the contactor We recommend using front mount or plug in auxiliary contact blocks to keep the device width to a minimum Regardless of which version is ordered, additional auxiliary contacts can always be added in the field

These starters can also be built from stock components: For quick component selection, use Section 4 of the catalog to select a 3RA factory assembled version. To the right of the 3RA catalog number, you will find a list of the components required for field assembly To see a detailed visual of how to assemble these starters, refer to pages 4/63 through 4/68 of the 2010 catalog.

Starter Selection Process

Non-reversing Width3RA111 45 mm3RA112 45 mm3RA113 55 mm3RA114 72 mm

Reversing Width3RA121 90 mm3RA122 100 mm3RA123 120 mm3RA124 150 mm

Pages 4/38 – 4/41

Pages 4/46 – 4/49

Non-Reversing 480 VAC 600 VAC3RA111 65KA 10kA3RA112 65KA 25kA3RA113 65KA 65kA3RA114 65KA 65kA

Reversing 480 VAC 600 VAC3RA121 65KA 10kA3RA122 65KA 25kA3RA123 65KA 65kA3RA124 65KA 65kA

UL SCCR's


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Step 5 – Select Additional Fastbus Adapters for other control components

Adapters for Sirius:101 (S00)and 102 (S0) frame size 25A rated:

8US1251-5DM07 (45 x 182mm)8US1250-5AM00 (45 x182mm)

103 (S2) frame size 50A rated:8US1261-5FM08 (55 x 182mm)8US1260-5AM00 (55 x 182mm)

Long adapter for combination starters:8US1261-5FP08 (55 x 242mm)8US1260-5AP00 (55 x 242mm)

104 (S3) frame size:8US1211-4TR00 (70A rated, 72mm x 215mm)FBS10072 (100A rated, supplied w/o wires, with DIN, 72mm x 200mm)

The 8US Fastbus system offers Adapter Shoes in various sizes so that you can customize your own Fastbus assembly to your application. Some Adapter Shoes come pre-wired and some without wire so that you can size the wire to your needs or attach to another adapter to mount a connecting device.

8US1260-5AM00

8US1251-5DM07

8US1211-4TR00Note: It is not recommended to “build your own” circuit breaker assemblies as Siemens offers these as kits that include the appropriate brackets and mounting hardware.


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Step 6 – Determine the Required Length of Busbar

Add the widths of all components that will be mounted to the busbar. Including:

End Supports and Intermediate Supports Main Circuit Breaker or Main Lug Kit 3RA Combination Starters Feeder Circuit Breakers Feeder Lug Kits Adapters to hold other control products

Determine what additional length may be required for future expansion (if any). Specify required bracing rating for the system to determine if and how many intermediate

supports are required. Add the widths of all intermediate supports and end supports, which are 21 mm each. Add all distances together to determine total length of busbar required.

NOTE:Make sure that the required busbar length will fit in your control panel. If necessary, break the Fast Bus in to multiple runs within the cabinet. When breaking in to additional runs, be sure to add the additional end & intermediate supports and any additional Feeder Lug Kits or Circuit Breakers to your overall length calculation.


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Step 7 – Selection of Bus Bar Components

Mounting Components Required for compliance with UL 508A:1. Bus Bar End and Intermediate Support A. 8US1923-3UA01 (bus bar holder support – end & intermediate) B. 8US1922-1AC00 (end cover)2. Busbar Choices:

A. FBB36 / FBB60 Qty.(3) 36 inches long x 5mm x 20mm Tinned Copper Busbar Qty.(3) 60 inches long x 5mm x 20mm Tinned Copper Busbar

B. Tin plated Copper Busbar (for bare copper contact Siemens) 8WC5120 6mm x 6mm x 2m (78.74”) for PE/N application up to 135A 8WC5053 5mm x 20mm x 2m (78.74”) 8WC5054 5mm x 25mm x 2m (78.74”) (note: can be double stacked = 660A Ampacity) 8WC5055 5mm x 30mm x 2m (78.74”) 8WC5063 10mm x 20mm x 2m (78.74”) 8WC5065 10mm x 30mm x 2m (78.74”) 8US1948-2AA00 TT busbar 720mm2 x 2.4m (94.49”)

Optional Components depending on specifications: Ground Busbar Holder

8US1923-1AA01 (mounts separately from 8US1923-3UA01 Bus Bar Holder) Allows use of 5mm x 20mm to 10mm x 30mm busbars as well as

6mm x 6mm busbar Choice of busbar determines ratings



How to Design a SystemProduct Tips New Products


2010-03 Slide 28/34

Changes in Basic Construction to ensure UL508A Compliance

1. Always specify 8US1922-1AC00 End Cover with 8US1923-3UA01 Busbar Holders. Do not use FBS400F or FBSXPF in new designs. The 8US1923-3UA01 Busbar Holder also acts as the intermediate support.

2. Always specify 8US1922-2UA01 (Flat Insulator base)

3. Edge profile is not common in U.S. Do not specify as part of a design if the customer does not request it.

4. No changes

5. Do not use the 5SH3532 top cover and 5SH3533 side cover combination which is what is comprised with the FBS400F. This rounded cover is made specifically for mounting the 3 edge profile.

See next slide for more detail


2010-03 Slide 29/34

Product Tips for UL508 Installations

Use Flat Base insulation panel 8US1922-2UA01Use 3-pole, Busbar Holder for flat busbars 20x5 mm, to 30x10 mm for end and intermediate supports. No top cover req’d.8US1923-3UA01

Use side cover on end busbar supports for 5-10mm busbars 8US1922-1AC00

For “TT” Busbar use:8US1943-3AA00 Busbar Holder with End Cover

Use PE / N Busbar Holder as req’d Mounts separately from 3-phase holder. Accepts 6x6mm and 20x5 mm, to 30x10 mm busbars 8US1923-1AA01 (new) or 5SH3506 (phase-out)Notes: FBS400F is no longer required to Meet UL508A and will be discontinued. This kit contains the busbar holders, top and side covers. The top cover is intended for accepting the top or bottom edge profiles.

FBSXPF is no longer required to Meet UL508A and will be discontinued. This kit contains the intermediate busbar holder and top cover. The top cover is intended for accepting the top or bottom edge profiles.


2010-03 Slide 30/34

Product Tips for VL Shoes up to 500A

8US1213-4AQ03 105mm wide 150A-250A Shoe + hardware for VL DG and FG frame Breaker - Feeder or Main Circuit Breaker. Requires (1) 3VL9300-8SA40 metric mounting screws (4pcs set) to be ordered separately. For FG frame, CB shall not be marked for 100% continuous current. Note: Accepts Max Flex Flange Disconnects but requires additional screw set 3VL9300-8SE20.

8US1213-4AH00 140mm wide 400A-540A Shoe + hardware for VL JG and LG frame Breaker - Feeder or Main Circuit Breaker. Requires (1) 3VL9500-8SA40 metric mounting screws (4pcs set) to be ordered separately. LG frame for use with Elec. Trip unit max rated 400A or for use with thermal MAG trip unit max rated 500A. Note: Accepts Max Flex Flange Disconnects but requires two M6 x 120mm screws. Contact Product Management for part number.

Bus Bar ShoeFor use with

30x10mm and “TT” busbar only

Current Rating

UL Short Circuit ratings240 VAC 480 VAC 600 VAC 600Y /

347 V250 VDC

500 VDC

8US1213-4AQ03 600V – 250A 200kA 100kA 25kA - 30kA 30kA

8US1213-4AH00 600V – 540A 200kA 100kA 25kA - 35kA 35kA


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Product Tips

40mm vs. 60mm Designs:

To clarify North American design requirements, 60mm center to center systems are approved in the U.S. whereas 40mm systems are not and are predominantly for European systems. For 40mm system components, refer to the LV1 catalog chapter 17 for Fast Bus.

UL Panel Inspection Update:

The use of Fast Bus components must be described under the Panel Builders Procedure documentation for UL inspection. For all current and future projects, please be sure to provide a copy of the Siemens UL report E160776 Vol 1 Sec 1.



How to Design a SystemProduct Tips New Products


2010-03 Slide 33/34

NEW 5SH3538

80A Connection Module Feed components off the

bus or another rung of bus bar up to 80A

Wires feed to bottom only

Spring loaded terminals 3 pole 16 – 4 AWG cables

See page 5/6 of the 2010 Controls catalog

Busbar Systems SIVACON 8USThank you

Fast Bus Busbar Systems March 2010

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Transcript of Fast Bus Busbar Systems March 2010