Arc Flash Study Short Circuit Study Coordination Study · 2019-06-07 · Short Circuit Study Coordination Study By Chris Myers, EIT Jason Wyenberg, PE ... Similarly the short circuit

Arc Flash Study Short Circuit Study Coordination Study

By

Chris Myers, EIT Jason Wyenberg, PE

Brent Kooiman, PE

Interstates

Sioux Center, Iowa

IE Job #:

Summary

On any given day, 5-10 arc flash events occur in the United States. These arc flashes result in over 7,000 burn injuries annually. An arc flash can be caused by human error, equipment failure, aging equipment, failure to maintain

equipment, or conductive dust. Keeping your workplace safe and compliant is crucial to the safety of your people and

the success of your business.

Companies must maintain compliance with the many regulations and standards associated with electrical safety:

OSHA Standards 29 CFR, Part 1910 (occupational safety); NFPA Standard 70 (labels); NFPA 70E (workplace practices); IEEE 1584 (calculating arc hazard). A professional arc flash study will identify areas of risk and ensure

compliance with standards. The study will determine the level of personal protective equipment (PPE) required

when someone is near electrical equipment. The study should also indicate the remediation work necessary to get

the PPE level down to an incident energy rating below the desired target. Cost of compliance is unique to each facility; however, a single arc flash event can be far more expensive than maintaining compliance.

Revisions & Table of Contents

Revisions

Revision Date Prepared By Comments

A 3/21/14 Chris Myers Issue for review and comment

NOTE: Changes made for the most recent revision will be shown in grey.

Table of Contents

Section 1: Project Overview

• Executive Summary

• Scope of Work

• Clarifications

Section 2: Results

• Recommendations

• Arc Flash Results

• Short Circuit Results

• Protective Device Coordination

Section 3: Appendices

• Appendix A: Arc Flash Technical Information

• Appendix B: Model One-Lines

• Appendix C: Coordination Curves

• Appendix D: Model Input Data Report

Dan Dana [phone: (712)233-4883; email: [email protected]] from MidAmerican on DATE

Air Liquide in Sergeant Bluff, IA

Air Liquide

Section 1: Project Overview

Executive Summary

The following document presents the results of an Arc Flash Study performed by Interstates Engineering for the

. Recommendations were created from these results to minimize or eliminate danger

to personnel or electrical equipment in the facility. The Arc Flash results were calculated to determine what personal

protective equipment (PPE) is needed at each piece of electrical equipment and show that most of the equipment in the facility has a minimal arc flash hazard. The following pieces of equipment have a high arc flash rating and

changes are recommended: ADD INFO HERE. Similarly the short circuit results were calculated to determine the

safety of the electrical system equipment if a fault were to occur. Recommendations to increase the short circuit rating for the following equipment have been made in Section 2: ADD INFO HERE. Coordination of protective

devices in the facility was also analyzed to determine if the devices are correctly coordinated to trip in the proper

order. Coordination problems were prevalent in the facility and recommendations to change the settings or fuses on the following devices have been made in Section 2: ADD INFO HERE.

Scope of Work

This Arc Flash Study is being undertaken at the request of to analyze the electrical system in the

facility. A computer model in the SKM POWER TOOLS power analytics software was developed from the

information gathered and used to calculate the information needed to create the following reports. The following

discussion includes a clarification of the information used during calculations; a presentation of recommendations generated from the results of the study; arc flash results, short circuit results, and coordination results; and

supplementary appendices providing additional information about the studies. Any changes to the electrical system

of the facility may affect the arc flash ratings of the electrical equipment and invalidate the results of this study. For this reason, it is recommended that the arc flash for the entire facility be re-evaluated on a regular basis not

exceeding five years to account for such changes (as specified by NFPA 70E).

Clarifications

Information Received and Collected

The information used for this arc flash study was collected during an on-site audit performed the week of 2/24/2014

and included information like wire length, size, and type; breaker information and settings; enclosure ratings; and

transformer information. Short circuit availability at the service transformers was given to Interstates by . The main

service had a short circuit availability of VALUE at LOCATION IN DISTRIBUTION SYSTEM.

mailto:[email protected]

Assumptions

The following assumptions were made when performing the arc flash hazard analysis for the Air Liquide, Sergeant

Bluff facility:

1. 10300-1 NH3 HIGH STAGE FUSE

a. No fuse data could be found on this and so it was estimated to have the same fuse size as the larger

CO2 2nd STAGE STARTER.

2. 10300-3 DISC NH3 HIGH STAGE

a. The AIC rating and momentary rating could not be determined from site data collection or from existing

documentation. Both the AIC and momentary ratings have been assumed to be 10 kA.

3. 10515-3 PANEL A XFMR

a. The impedance of the transformer is unknown and so a typical value has used for a 15 kVA

transformer. See the data input report in appendix D for details.

4. 10515-5 PANEL A

a. The short circuit value could not be determined so a typical value of 10 kA SCR has been assumed.

5. 10516-3 PANEL B

a. The short circuit value could not be determined so a typical value of 10 kA SCR has been assumed.

6. 105201-5 PANEL E CIRCUIT BREAKER, 105215-5 PANEL D CIRCUIT BREAKER

a. The quicklag type BA breaker curve is not in the protective device library and has been assumed as a

similar thermal magnetic breaker. Specifically, a Westinghouse FDP SERC 100A.

This information was necessary for creating a model of the electrical system, but was not available or accessible at the time of the audit. These were made to model the system as accurately as possible while still providing the worst-

case arc flash value for the equipment.

Section 2: Results Recommendations

Recommendations have been provided to eliminate or minimize arc flash hazards, short circuit violations,

coordination issues, and NEC violations. Table 1: Recommendations on the following pages provides a brief description of each recommendation; further information may be found in the results sections or appendices.

Each recommendation has been given a priority ranking from 0 to 5, based on factors such as personnel safety,

electrical equipment safety, and accepted practices in industry. The rankings should be interpreted using the following scale.

• A ranking of 5 represents a very urgent item that poses a significant risk to personnel and plant safety.

• A ranking of 3 represents an issue that should be discussed and a plan put in place for remediation.

• A ranking of 1 represents a low priority issue that should be discussed, but action may not be needed.

• A ranking of 0 represents an item included for informational purposes only, no change is needed.

TABLE 1 - RECOMMENDATIONS RECOMMENDATION

NUMBER PRIORITY RECOMMENDATION

TYPE EQUIPMENT INVOLVED

RECOMMENDED CHANGE

THE SAME FUSE IS USED FOR BOTH THE MAIN SWGR AND THE

SUB-FED 4160 DISCONNECT. THIS COULD LEAD TO THE 4160

1

5

COORDINATION MAIN SWGR FUSE, 4160 STARTERS

DISCONNECT FUSE. SEE TCC CURVE 100-1

MOTORS TRIPPING THE SERVICE RATHER THAN LIMITING IT

TO THE BRANCH DISCONNECT. THE MAIN SWGR FUSE

SHOULD BE INCREASED (THIS WILL NEED TO BE INVESTIGATED

FURTHER TO RECOMMEND A SPECIFIC FUSE)

THERE IS MISCOORDINATION BETWEEN AFTER 3 SECONDS,

2 4 COORDINATION 4160 STARTERS DISCONNECT FUSE, 1ST

CO2 STARTER FUSE. SEE TCC CURVE 101-1

CHANGING THE FUSE TYPE TO A TIME DELAY RATHER THAN

STANDARD FUSE ON THE 4160 STARTERS DISCONNECT FUSE WILL LIKELY RESOLVE THE ISSUE.

3

-

ARC FLASH

-

ARC FLASH RECOMMENDATIONS WILL BE REVIEWED WHEN

FINAL UTILITY INFO IS RECEIVED

4 - SHORT CIRCUIT - SHORT CIRCUIT RECOMMENDATIONS WILL BE REVIEWED

WHEN FINAL UTILITY INFO IS RECEIVED

Section 2: Results Arc Flash Results

The Arc Flash Study was conducted to find out what personal protective equipment (PPE) is needed at each

switchboard, panelboard, control panel, and motor control center. PPE is only needed if the owner chooses to work on the equipment live. A warning tag will need to be clearly visible on each switchboard, panelboard,

industrial control panel, and motor control center. The tag will say “WARNING Arc Flash and Shock Hazard

Appropriate PPE Required”. Below is an example of the type of tag to be installed on the electrical equipment. The

information included on the tag corresponds to the arc flash tag information generated by the software arc flash module. The following pages present Table 2: Arc Flash Tag Information for the equipment that is potentially

subject to live work at this facility. Note that the equipment is sorted per the one-line drawings for the electrical

system. Below the arc flash tag is an example of the header of Table 2 with indicators of how the information from the table corresponds to the tags installed on equipment in the facility.

I

B

A* B C D E F* G* H I J K L M N*

On

e-Lin

e R

eference

DESC

RIP

TION

Flash Hazard

Boundary

Cal/cm2

Flash Hazard at

18"

Short

Circuit Current (amps @ 3P-1/2

cycle)

Controlling Branch Arcing

Current (amps)

Fault Duration (seconds)

Clothing Class

Number

PPE Level (number of

layers)

Shock Hazard When

Cover is Removed

(V)

Limite

d A

pp

roach

Re

stricted

Ap

pro

ach

Pro

hib

ited

Ap

pro

ach

Glo

ve Class

* Item Not Shown On Arc Flash Tags

C

D

H

E J K L M

Table 2 - Arc Flash Tag Information+

One-Line

Reference

DESCRIPTION (switchboards, panelboards,

industrial control panels, and motor control

centers)

Flash Hazard

Boundary

Cal/cm2 Flash

Hazard at 18"

Short Circuit

Current (amps @

3P-1/2 cycle)

Controlling Branch

Arcing Current

(amps)

Fault

Duration

(seconds)+

Clothing Class Number

PPE Level (number of layers)

Shock Hazard

When Cover is

Removed (V)

Limited

Approach

Restricted

Approach

Prohibited

Approach

Glove

Class

E05-1 MAIN SWGR 1379' 9" 465.8 41070 38880 10 EXTREME DANGER** PPE NOT AVAILABLE - DE-ENERGIZE EQUIPMENT BEFORE WORKING 4160 5'-0'' 2'-2'' 0'-7'' 1

E05-1

4160 STARTERS

2'

0.8

40820

39030

0.017

0

Non-melting or Untreated Natural Fiber (According to ASTM F 1506-00): Shirt (long-

sleeve) and Pants (long). Safety Glasses or Goggles, Voltage Rated Gloves with Leather Protectors. Hearing Protection (ear canal inserts)

4160

5'-0''

2'-2''

0'-7''

1

E05-1

1ST CO2 STARTER

6"

0.2

40760

39950

0.004

0


sleeve) and Pants (long). Safety Glasses or Goggles, Voltage Rated Gloves with Leather

Protectors. Hearing Protection (ear canal inserts)

4160

5'-0''

2'-2''

0'-7''

1

E05-1

2ND CO2 STARTER

6"

0.2

40700

40050

0.004

0



4160

5'-0''

2'-2''

0'-7''

1

E05-1

NH3 HIGH STAGE

6"

0.2

40300

39980

0.004

0



4160

5'-0''

2'-2''

0'-7''

1

E05-1

MCC TRANSFORMER

2'

0.8

40810

40410

0.017

0



4160

5'-0''

2'-2''

0'-7''

1

E05-1

NORTH MCC

2' 8"

3.1

18380

2120

0.083

1

Non-melting or Untreated Natural Fiber (cotton): Pants (long). FR Clothing (Minimum Arc

rating of 4): Long-sleeve Shirt and Pants or coverall, Face Shield or Arc Flash Suit Hood,

Arc Rated Jacket/Parka/Rainwear. Hard Hat, Safety Glasses or Goggles, Hearing

Protection (ear canal inserts), Voltage Rated Gloves with Leather Protectors, and Leather Work Shoes.

480

3'-6''

1'-0''

0'-1''

00

E05-1 NORTH MCC LINE SIDE 13' 10" 45.6 18380 14080 1.853 EXTREME DANGER** PPE NOT AVAILABLE - DE-ENERGIZE EQUIPMENT BEFORE WORKING 480 3'-6'' 1'-0'' 0'-1'' 00

E05-2

CO2 DRYER HTR

7"

0.2

6980

6980

0.015

0




480

3'-6''

1'-0''

0'-1''

00

E05-2

RTU

1'6''

N/A

750

N/A

N/A

0*




240

3'-6''

AVOID

CONTACT

AVOID

CONTACT

00

E05-2

OFFICE PNL

1'6''

N/A

930

N/A

N/A

0*




240

3'-6''

AVOID

CONTACT

AVOID

CONTACT

00

E05-2

LIFT STATION

2"

0.0

1720

1720

0.01

0



480

3'-6''

1'-0''

0'-1''

00

E05-2

HTG AND AC

3"

0.1

2190

2190

0.01

0



480

3'-6''

1'-0''

0'-1''

00

E05-2

PANEL A

1'6''

N/A

1210

N/A

N/A

0*



240

3'-6''

AVOID

CONTACT

AVOID

CONTACT

00

E05-2

PANEL B

11"

0.5

15260

15260

0.016

0



480

3'-6''

1'-0''

0'-1''

00

E05-2

PANEL C

11"

0.5

17160

17160

0.015

0



480

3'-6''

1'-0''

0'-1''

00

E05-3

PANEL E

1'6''

N/A

1250

N/A

N/A

0*



240

3'-6''

AVOID

CONTACT

AVOID

CONTACT

00

E05-3

TEMP AIR HNDLR

3"

0.1

2580

2580

0.01

0



480

3'-6''

1'-0''

0'-1''

00

E05-1

SOUTH MCC

2"

0.0

16470

14130

0.001

0




480

3'-6''

1'-0''

0'-1''

00

E05-1 SOUTH MCC LINE SIDE 15' 9" 56.5 16470 12390 2.557 EXTREME DANGER** PPE NOT AVAILABLE - DE-ENERGIZE EQUIPMENT BEFORE WORKING 480 3'-6'' 1'-0'' 0'-1'' 00

E05-3

PELLETIZER #1

3"

0.1

1760

1740

0.021

0




480

3'-6''

1'-0''

0'-1''

00

E05-3

PELLETIZER #2

3"

0.1

1760

1740

0.021

0




480

3'-6''

1'-0''

0'-1''

00

E05-3

PELLETIZER #3

3"

0.1

1820

1800

0.016

0



480

3'-6''

1'-0''

0'-1''

00

E05-3

PELLETIZER #4

3"

0.1

1820

1800

0.016

0



480

3'-6''

1'-0''

0'-1''

00

E05-3

PELLETIZER #5

3"

0.1

1920

1900

0.013

0



480

3'-6''

1'-0''

0'-1''

00

E05-3

PELLETIZER #6

3"

0.1

1900

1880

0.014

0




480

3'-6''

1'-0''

0'-1''

00

Section 2: Results Short Circuit Results

The short circuit rating of equipment indicates how much fault current the equipment can safely be subjected to

and still maintain proper operation. If the equipment is not rated properly for the available fault current, the

equipment could fail during a fault causing equipment and facility damage, plant downtime, or injury. Table 3:

Short Circuit Ratings is given on the following pages and shows the comparison between equipment short

circuit ratings, available fault current at that location, and a concern rating that matches the rating given in Table

1: Recommendations earlier in this report.

The concern level rating from 0 to 5 is based on an assessment of the difference between the available fault

current and component rating.

• A rating of 5 refers to a panel that has been analyzed as substantially under-rated for the available fault

current. These situations are high-priority and should be addressed immediately due to their danger for both

plant personnel and equipment.

• A rating of 3 refers to a device that has been assessed to be medium priority because it is insufficiently rated in comparison to the available fault current. These devices have some risk in a fault situation of sustaining

damage or are not rated high enough to accommodate additional load.

• A rating of 1 refers to a device that has been assessed to be low priority because it does appear to be sufficiently rated for the available fault current, but there are questions about the rating of the equipment or

the available fault current is close to exceeding the rated value.

• A rating of 0 refers to a device that has a short circuit rating high enough to easily handle the available fault current; no changes are recommended in this situation.

Project: Sioux Center Air Liquide SKM

Scenario: Base Project

Air Liquide

Sioux Center, IA

Bus Evaluation Comprehensive Fault Report

Bus Name Description Status Data State Calc Isc Dev Isc Isc Calc Dev Mom Mom

kA kA Rating% Mom_kA kA Rating%

10000-5 SWGR [MAIN SWGR] MAIN SWITCHGEAR Fail Complete 41.07 40.00 102.68 52.23 40.00 130.56

10000-8 SWGR [4160 STARTERS] MAIN SWITCHGEAR Fail Complete 40.82 40.00 102.06 51.51 40.00 128.78

10100-3 DISC [1ST CO2 STARTER] 1ST STAGE CO2 STARTER/DISCOFail Complete 40.76 50.00 81.52 51.44 50.00 102.89

10200-3 DISC [2ND CO2 STARTER] 2ND STAGE CO2 STARTER/DISCOFail Complete 40.70 50.00 81.40 51.38 50.00 102.76

10300-3 DISC [NH3 HIGH STAGE] NH3 HIGH STAGE STARTER/DISCFail Estimated 40.30 10.00 403.03 50.05 10.00 500.48

10500-3 SWGR [MCC TRANSFORMER] MAIN SWITCHGEAR Fail Complete 40.81 40.00 102.02 51.46 40.00 128.65

10516-3 PNL [PANEL B] PANEL B Fail Estimated 15.26 10.00 152.62 0.00 0.00 0.00

Section 2: Results Protective Device Coordination

The coordination study calculates how the overcurrent protective devices (fuses, breakers, relays, etc.) in the

system will interact with each other under various overload or fault conditions. Table 4: Breaker and Fuse

Coordination Settings gives the settings of protective devices found in the facility and recommendations where applicable. Protective device curves, where given, are noted by a separate page numbering system in Table 4 and

can be found in Appendix C: Coordination Curves. See Table 1: Recommendations for more information on

recommendations involving changes in coordination settings.

Project: Sioux Center Air Liquide SKM

Scenario: Base Project

Air Liquide

Sioux Center, IA

Protective Device Setting Report

Prot Dev Manufacturer Type Frame Sensor LTPU LTD STPU STD INST INST_Delay

10000-4 FUSE

[MAIN SWGR]

CUTLER-HAMMER RBA, RDB-400,

2.4-34.5kV

E-Rated

400.0 400.0

10100-1 FUSE

[1ST CO2

STARTER]

GOULD SHAWMUT A480R, 5.5kV

R-Rated

200.0 200.0

10200-1 FUSE

[2ND CO2

STARTER]


R-Rated

170.0 170.0

10300-1 FUSE

[NH3 HIGH

STAGE]


R-Rated

170.0 170.0

Section 3: Appendices B: Model One-Lines

Included is the one-line drawing of the electrical system as modeled in the power analytics software package used

for the Arc-Flash study. This model is used for the arc flash and short circuit calculations in addition to being the

base model for the coordination analysis.

Air Liquide Sioux Center, IA

10000-1 UTIL [UTILITY]

4160.0 V

SC Contribution 3P 300. 0 M VA SC Contribution SLG 30.0 MVA

P 10000-2 XFMR [UTILITY]

S 0.0 kVA 12470 V 4160 V Z% 0.0000 %

10000-3 CBL [MAIN SWGR]

5"

Non-Magnetic

4/0 AWG/kcmil 100% 140.0 ft

10000-4 FUSE [MAIN SWGR]

Frame/Rating 400.0 A InterruptingRating 20.0 kA

10000-6 CBL [4160 STARTERS]

N/A

Non-Magnetic 4/0 AWG/kcmil MV 15.0 ft

10000-7 FUSE [4160 STARTERS]


10000-5 SWGR [MAIN SWGR]

600.0 A 4160.0 V 3 PH

40.0 kASCR

10500-1 CBL [MCC TRANSFORMER] N/A Non-Magnetic 4/0 AWG/kcmil MV 15.0 ft

10500-2 FUSE [MCC TRANSFORMER] Frame/Rating 200.0 A InterruptingRating 19.0 kA

10300-1 FUSE [NH3 HIGH STAGE]

Frame/Rating 170.0 A

InterruptingRating 50.0 kA

10200-1 FUSE [2ND CO2 STARTER]



10100-1 FUSE [1ST CO2 STARTER]



10000-8 SWGR [4160 STARTERS ]

600.0 A 4160.0 V 3 PH

40.0 kASCR

10400-1 FUSE [SPARE]


10500-3 SWGR [MCC TRANSFORMER]

600.0 A 4160.0 V 3 PH 40.0 kASCR

10300-2 CBL [NH3 HIGH STAGE] N/A


10200-2 CBL [2ND C O2 STARTER] BUSWAY Busway

3000 AWG/kcmil Class B 4.0 ft

10100-2 CBL [1ST CO2 STARTER] BUSWAY Busway


10400-2 CBL [SPARE] BUSWAY Busway


10500-4 CBL [MCC TRANSFORMER]

3 1/2" Magnetic

1/0 AWG/kcmil 133% 40.0 ft

10300-3 DISC [NH3 HIGH STAGE]

100.0 A 4160.0 V 3 PH 10.0 kASCR

10300-4 CBL [NH3 HIGH STAGE] N/A

Non-Magnetic 4 AWG/kcmil MV 35.0 ft

10200-3 DISC [2ND CO2 STARTER]

600.0 A 4160.0 V 3 PH 50.0 kASCR

10200-4 CBL [2ND C O2 STARTER] N/A

Non-Magnetic 2 AWG/kcmil MV 121.0 ft

10100-3 DISC [1ST CO2 STARTER]

600.0 A 4160.0 V 3 PH 50.0 kASCR

10100-4 CBL [1ST CO2 STARTER] N/A


10400-3 DISC [SPARE]

0.0 A 4160.0 V 3 PH 0.0 kASCR

P 10500-5 XFMR [MCC TRANSFORMER]

S 750.0 kVA 4160 V 480 V Z% 5.7700 %

10500-6 TAPS [MCC TRANSFORMER]

0.0 A 480.0 V 3 PH

0.0 kASCR

10300-5 MTR [NH3 HIGH STAGE]

400.0 hp NumMotors 1

10200-5 MTR [2ND CO2 STARTER]

800.0 hp NumMotors 1

10100-5 MTR [1ST CO2 STARTER] 1000.0 hp NumMotors 1

10520-1 CBL [SOUTH MC C]

2" Magnetic

4/0 AWG/kcmil THHN 52.0 ft

10520-2 CB [SOUTH MCC]


10510-1 CBL [NORTH MCC]

2" Magnetic

4/0 AWG/kcmil THHN 47.0 ft

10510-2 CB [NORTH MCC]


10520-3 MCC [SOUTH MCC]

600.0 A 480.0 V

3 PH

65.0 kASCR

10510-3 MCC [NORTH MCC]

800.0 A 480.0 V 3 PH

65.0 kASCR

E05-01 MAIN SWGR Base Project

March 19, 2014

Section 3: Appendices C: Coordination Curves

The coordination study calculates how the overcurrent devices in the system will interact with each other under

various overload or fault conditions. On the graphs, current is shown on the horizontal axis and time is on the

vertical axis. Note that each curve is plotted at a reference voltage of 480V even though some devices may be rated for higher or lower voltages. Progressing from left to right on the horizontal axis, the fault or overload

current is increased. Trip times are calculated by finding the correct fault or overload condition on the horizontal

axis, and moving vertically upward until a protective device curve is intercepted.

These trip times can be adjusted either by making changes to the settings on the adjustable breakers or by using a

different size and style of fixed-magnitude breaker or fuse. By adjusting these trip times, the system can be coordinated so that if a fault does occur, the fewest pieces of equipment possible are shut down. Example: If a fault

would happen at a motor, you would want the individual breaker or fuse in the starter bucket to open and shut that

motor down. You would not want the main breaker to open and shut down the entire MCC. Proper settings

minimize the probability of this occurring.

A listing of the settings and sizes of the breakers included in this study can be found in Table 4 – Breaker and

Fuse Coordination Settings. Not all curves are shown in this appendix because there were no coordination issues

or no recommendations made for changes to coordination settings.

Recommendations for new breaker settings have been made and are shown as a second entry in Table 4 – Breaker

and Fuse Coordination Settings.

Name 10000-4 FUSE [MAIN SWGR] Manufacturer CUTLER-HAMMER Type RBA,Frame/Model RBA, RDB-400, 400E Trip 400.0 A Settings Phase

400.0 Amps

Name 10000-7 FUSE [4160 STARTERS] Manufacturer CUTLER-HAMMER Type RBA, RDB-400, 2.4-34.5kV E-Rated Frame/Model RBA, RDB-400, 400E Trip 400.0 A Settings Phase

400.0 Amps

Name 10500-2Manufacturer CUTLER-HAMMER Type RBA, RDB-200, 2.4-34.5kV E-Rated Frame/Model RBA, RDB-200, 200E Trip 200.0 A Settings Phase

200.0 Amps

TIM

E I

N

SECO

ND

S CURRENT IN AMPERES

0.5 1 10

1000 Name 10000-4 FUSE [MAIN SWGR] Manufacturer CUTLER-HAMMER Type RBA,Frame/Model RBA, RDB-400, 400E Trip 400.0 A Settings Phase

400.0 Amps

1000

100 Name 10000-7 FUSE [4160 STARTERS] Manufacturer CUTLER-HAMMER Type RBA, RDB-400, 2.4-34.5kV E-Rated Frame/Model RBA, RDB-400, 400E Trip 400.0 A Settings Phase

400.0 Amps

100

10 10

Name 10500-2 FUSE [MCC TRANSFORMER] Manufacturer CUTLER-HAMMER Type RBA, RDB-200, 2.4-34.5kV E-Rated Frame/Model RBA, RDB-200, 200E Trip 200.0 A Settings Phase

200.0 Amps

1 1

0.10 0.10

0.01 0.01

100-1 MAIN SWGR FUSES Reference Voltage: 4160 March 19, 2014

Base Project

TI

ME IN

SE

COND

S

100

1K

10K

RBD-400, 2.4-3kV E-Rated

Brandie.Vonk-Frangen

Typewritten Text

FUSE [MCC TRANSFORMER]

Section 3: Appendices D: Input Report

The input report details the various components in the model. This appendix can be used to recover or recreate

the model used to generate this report.

Project: Sioux Center Air Liquid

Air Liquide

Sioux Center, IA

DAPPER Fault Analysis Input Report (English)

Utilities

Contribution Bus In/Out Nominal -------- Contribution Data -------- PU (100 MVA Base

From Name Name Service Voltage Duty Units X/R R PU X PU

10000-1 UTIL [UTILITY] BUS-0001 In 4,160 3P: 300 MVA 8.00 Pos: 0.041 0.331

SLG: 30 MVA 8.00 Zero: 0.331 2.646

Motors

Contribution

From Name

# of

Motors

Bus

Name

In/Out

Service

Nominal

Voltage

--------- Contribution Data --------

Base kVA Xd" X/R

PU (100 MVA Base)

R PU X PU

10100-5 MTR [1ST CO2 STARTER 1 BUS-0005 In 4,160 1,002.69 0.1692 10.00 1.687 16.870

10200-5 MTR [2ND CO2 STARTE 1 BUS-0006 In 4,160 802.15 0.1692 10.00 2.109 21.088

10300-5 MTR [NH3 HIGH STAGE 1 BUS-0007 In 4,160 401.08 0.1692 10.00 4.217 42.175

10509-1 MTR [MCC NORTH LOA 9 10510-3 MCC [NORTH MCC] In 480 11.03 0.1692 10.00 17.040 170.406

10518-1 MTR [FRICK BOOSTER] 1 10510-3 MCC [NORTH MCC] In 480 200.54 0.1692 10.00 8.435 84.351

105203-4 MTR [PELLETIZER 1] 1 105203-3 ENC [PELLETIZER In 480 10.03 0.1692 10.00 168.695 1,687.015












105216-1 MTR [RECO BOOSTER 1 10520-3 MCC [SOUTH MCC] In 480 200.54 0.1692 10.00 8.435 84.351

1

Contribution

From Name

# of

Motors

Bus

Name

In/Out

Service

Nominal

Voltage

--------- Contribution Data --------

Base kVA Xd" X/R

PU (100 MVA Base)

R PU X PU

105217-1 MTR [SOUTH MCC LO 6 10520-3 MCC [SOUTH MCC] In 480 3.01 0.1692 10.00 93.719 937.231

Cables

Cable

Name

From Bus

To Bus

In/Out

Service

Qty

/Ph

Length

Feet

------ Cable Description ------

Size Cond. Type Duct Type Insul

Per Unit (100 MVA Base)

R pu jX pu

10000-3 CBL [MAIN BUS-0001 In 2 140 4/0 Copper Non-Magnetic XLPE Pos: 0.0258 0.0198

SWGR]

10000-5 SWGR Zero: 0.0950 0.0561

[MAIN SWGR]

10000-6 CBL [4160 10000-5 SWGR In 2 15 4/0 Copper Non-Magnetic EPR Pos: 0.0027 0.0017

STARTERS] [MAIN SWGR]

10000-8 SWGR Zero: 0.0044 0.0044

[4160

10100-2 CBL [1ST 10000-8 SWGR In 1 2 3000 Copper Busway Epoxy Pos: 0.0000 0.0005

CO2 STARTER] [4160 STARTERS]

10100-3 DISC Zero: 0.0002 0.0029

[1ST CO2

10100-4 CBL [1ST 10100-3 DISC [1ST In 1 153 4/0 Copper Non-Magnetic EPR Pos: 0.0560 0.0294

CO2 STARTER] CO2 STARTER]

BUS-0005 Zero: 0.0889 0.0746

10200-2 CBL [2ND 10000-8 SWGR In 1 4 3000 Copper Busway Epoxy Pos: 0.0001 0.0011

CO2 STARTER] [4160 STARTERS]

10200-3 DISC Zero: 0.0004 0.0059

[2ND CO2

10200-4 CBL [2ND 10200-3 DISC In 1 121 2 Copper Non-Magnetic EPR Pos: 0.1412 0.0273

CO2 STARTER] [2ND CO2

BUS-0006 Zero: 0.2245 0.0694

10300-2 CBL [NH3 10000-8 SWGR In 1 15 4/0 Copper Non-Magnetic EPR Pos: 0.0055 0.0034

HIGH STAGE] [4160 STARTERS]

10300-3 DISC Zero: 0.0087 0.0088

[NH3 HIGH

10300-4 CBL [NH3 10300-3 DISC In 1 35 4 Copper Non-Magnetic EPR Pos: 0.0649 0.0085

HIGH STAGE] [NH3 HIGH

BUS-0007 Zero: 0.1003 0.0217

10400-2 CBL 10000-8 SWGR Out 1 8 3000 Copper Busway Epoxy Pos: 0.0001 0.0022

[SPARE] [4160 STARTERS]

10400-3 DISC Zero: 0.0008 0.0117

[SPARE]

10500-1 CBL [MCC 10000-5 SWGR In 2 15 4/0 Copper Non-Magnetic EPR Pos: 0.0027 0.0017

TRANSFORMER] [MAIN SWGR]

10500-3 SWGR Zero: 0.0044 0.0044

[MCC

10500-4 CBL [MCC 10500-3 SWGR In 1 40 1/0 Copper Magnetic XLPE Pos: 0.0296 0.0140

TRANSFORMER] [MCC

BUS-0051 Zero: 0.1001 0.0396

10510-1 CBL 10500-6 TAPS In 3 47 4/0 Copper Magnetic PVC Pos: 0.4352 0.3379

[NORTH MCC] [MCC

10510-3 MCC Zero: 1.3715 0.8323

[NORTH MCC]

2

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Arc Flash Study Short Circuit Study Coordination Study · 2019-06-07 · Short Circuit Study Coordination Study By Chris Myers, EIT Jason Wyenberg, PE ... Similarly the short circuit