Attachment G - Arcflash_study.pdf
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- Solicitation number
- 1333ND26QNB190466
About this file
This is an arc flash study document prepared for the NIST Gaithersburg, Maryland campus in support of an electrical maintenance services solicitation. The document provides technical analysis and safety assessment of electrical systems at the facility to establish baseline conditions for maintenance requirements and hazard mitigation. Arc flash studies are critical safety assessments that identify potential electrical hazards, calculate incident energy levels, and recommend protective measures for personnel working on or near electrical equipment. This attachment serves as a reference document for vendors responding to the RFQ to understand the electrical infrastructure, current system conditions, and safety requirements they must address in their maintenance service proposals. The arc flash study enables prospective contractors to accurately scope work, identify necessary safety protocols and personal protective equipment (PPE) requirements, and develop comprehensive maintenance plans that comply with NFPA 70E electrical safety standards and other applicable federal safety regulations for work performed at the NIST facility.
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Transmittal Transmittal Number: 44690010-1305
TO: Mike Boisclair
Building 301 Rm B168 Date: June 1, 2018
100 Bureau Drive Job Name: ESPC NIST ECM 10.1
Gaithersburg, MD 20899 Location: NIST Gaithersburg, MD
Customer PO#:
Subj. Transmittal: ESPC-NIST ECM 10.1 Arc Flash Study Final Report – Revision 4.2
Contract #:
YB1323-15-CN-0018
We are sending you herewith the following drawings, documents or instructions for:
For Submittal Destroy Previous Prints As Requested
Preliminary Final Distribution Record and File
For Information Only
Approval
Return 1 Item
Fabrication Held for Approval & Written Release
Equipment is being fabricated and any changes may create a delay in shipment and a possible increase in price.
Note: For Information Only.
Item Description / Comments Document # / Ref Rev
# of
Sets
1 ESPC-NIST ECM 10.1 Arc Flash Study Final Report – Revision 4.2 44690010-1306 NA 1
Comments:
CC to:
# of Copies
TRANSMITTED BY:
David Cheek 1
Marcellia Kemp 1 ________________________
COMMBINED HEAT AND POWER
ARC-FLASH STUDY
NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY
GAITHERSBURG, MD
PREPARED FOR:
LIMBACH INC.
May 2018
Revision 4.2
Table of Contents
1. INTRODUCTION 3
1.1 About the Study
1.2 Arc Flash Hazard Analysis
1.3 Single Line Diagram
2. SHORT-CIRCUIT ANALYSIS 4
2.1 Fault Current Considerations
2.2 Available Fault Current
3. ARC FLASH SUMMARY 20
4. SUMMARY AND RECOMMENDATIONS 24
APPENDICES
APPENDIX A Arc Flash Analysis 27
APPENDIX B PPE Guidance Table 60
APPENDIX C Arc Flash Labels 62
APPENDIX D System One-Line Diagram 70
ELECTRICAL ASSET MANAGEMENT PROGRAM
©2013 ABM Industries Inc. Confidential and Proprietary
1. INTRODUCTION
1.1 About the Study
ABM Electrical Power Solutions (ABMEPS) performs Arc-Flash Hazard studies to ensure safe, reliable and dependable electrical power. ABMEPS accomplishes this by assuring that the system properly provides continuous electrical power during normal operating conditions, and safely minimizes the extent of outages during short-circuits (faults) or overload conditions.
The basis of this analysis is that an arc-flash can occur at anytime, anywhere on the system.
ABMEPS analyses the protective devices within the scope of the project for proper interrupting capability by comparing the manufacturer's published interrupting ratings with the calculated available fault levels.
1.2 Arc Flash Hazard Analysis
Arc Flash Evaluation analysis has been performed using the ETAP Power System Analysis
Software which is based on the NFPA 70E-2015 and IEEE Standard 1584 -
2002/2004a/2011b, IEEE Guide for Performing Arc-Flash Hazard Calculations.
1.3 System One -Line Diagram
The one-line diagram in Appendix D represents the electrical distribution system within the scope of the existing electrical systems.
2. SHORT-CIRCUIT ANALYSIS
2.1 Fault Current Considerations
This study summarizes the computer calculations of the most significant electrical distribution system three-phase and phase-to-ground short circuit currents for the National Institutes of
Standards and Technology, Combined Heat and Power Plant, Gaithersburg, Md.
Unless otherwise noted, calculations comply with IEEE Standard 141-1993(R1999) Red-Book, IEEE Recommended Practices For Electric Power Distribution For Industrial Plants;
ANSI/IEEE Standard 242-2004 Buff-Book, IEEE Recommended Practices For Protection and Coordination of Industrial and Commercial Power Systems, the IEEE Standard 399-
1997 Brown-Book, IEEE Recommended Practices For Power Systems Analysis, and ANSI
C37.010-1999, IEEE Application Guide for AC High-Voltage Circuit Breakers Rated on a
Symmetrical Current Basis.
2.2 Available Fault Currents
The available fault currents on the PEPCO Bus 224485, Sub 160, Feeders A, B, and C was referenced from the Concord Engineering Short Circuit / Coordination Study.
The following Time Current Curves and Protection Device tables study excerpts are from
Concord Engineering Short-Circuit / Coordination study.
TCC & PROTECTIVE DEVICE
CONCORD ENGINEERING
STUDY EXCERPT
Location: Gaithersburg, MD
Engineer:
Study Case: SC
16.2.0C Page: 1
SN:
Filename: NIST CHP FINAL
Project: NIST CHP ETAP
Contract:
Date: 04-25-2018
Revision: Base
Config.: Normal
Electrical Transient Analyzer Program
Short-Circuit Analysis
ANSI Standard
3-Phase Fault Currents
Number of Buses:
Number of Branches:
Number of Machines:
Total
Tie PD
Total
Impedance
Lumped
Load
Total
Induction
Machines
Line/Cable
Load
Synchronous
Motor
Reactor
V-Control
Power
Grid
XFMR3
Swing
Synchronous
Generator
XFMR2
Unit System:
Project Filename:
Output Filename:
System Frequency: 60.00
English
NIST CHP FINAL
C:\Users\vcarbone\Desktop\NIST CHP ETAP - Working\SC.SA1S
NIST CHP ETAP SHORT-CIRCUIT ANALYSIS
3-PHASE FAULT CURRENTS
Study Case: SC
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Filename: NIST CHP FINAL
Project: NIST CHP ETAP
Contract:
Date: 04-25-2018
Revision: Base
Config.: Normal
Adjustments
Transformer Impedance:
Reactor Impedance:
Tolerance
Overload Heater Resistance:
Transmission Line Length:
Cable Length:
Temperature Correction
Transmission Line Resistance:
Cable Resistance:
Percent
Degree C
Individual
/Global
Individual
/Global
Individual
Individual
Individual
Individual
Apply
Adjustments
Apply
Adjustments
Yes
Yes
No
No
No
Yes
Yes
Study Case: SC
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Filename: NIST CHP FINAL
Project: NIST CHP ETAP
Contract:
Date: 04-25-2018
Revision: Base
Config.: Normal
Bus Input Data
ID Type
Bus Initial Voltage
%Mag. Ang.Sub-sysBase kVNom. kV
0.4800.480Load1O_BUS 1 100.00 0.00
0.4800.480Load2C_BUS 1 100.00 0.00
0.4800.480Load2I_BUS 1 100.00 0.00
0.4800.480Load2O_BUS 1 100.00 0.00
0.4800.480Load3A_BUS 1 100.00 0.00
0.4800.480Load3E_BUS 1 100.00 0.00
0.4800.480Load4A_BUS 1 100.00 0.00
0.4800.480Load4G_BUS 1 100.00 0.00
0.4800.480LoadAC-6 VFD_BUS 1 100.00 0.00
0.4800.480LoadAC-7 VFD_BUS 1 100.00 0.00
13.80013.800LoadBUS B 1 100.00 0.00
13.80013.800LoadBUS D 1 100.00 0.00
13.80013.800SWNGBusC 1 100.00 0.00
4.1604.160Gen.CTG-1_BUS 1 100.00 0.00
0.4800.480LoadEF-25_BUS 1 100.00 0.00
0.4800.480LoadEF-26_BUS 1 100.00 0.00
4.1604.160LoadFGC-1 Starter 1 100.00 0.00
4.1604.160LoadFGC-01_BUS 1 100.00 0.00
0.4800.480LoadFGC-PP 1 100.00 0.00
0.4800.480LoadH3103_BUS 1 100.00 0.00
0.4800.480LoadM1300 VFD_BUS 1 100.00 0.00
0.4800.480LoadM1300-HTR_BUS 1 100.00 0.00
0.4800.480LoadM1330_BUS 1 100.00 0.00
0.4800.480LoadM3150-HTR_BUS 1 100.00 0.00
0.4800.480LoadM3150_BUS 1 100.00 0.00
0.4800.480LoadM-3220_BUS 1 100.00 0.00
0.4800.480LoadM-3320-HTR_BUS 1 100.00 0.00
0.4800.480LoadM6211-HTR_BUS 1 100.00 0.00
0.4800.480LoadM6211_BUS 1 100.00 0.00
0.4800.480LoadM6221-HTR_BUS 1 100.00 0.00
0.4800.480LoadM6221_BUS 1 100.00 0.00
0.4800.480LoadMCC-7 1 100.00 0.00
0.4800.480LoadP-CHWP-9-HTR_BUS 1 100.00 0.00
0.4800.480LoadP-CHWP-9_BUS 1 100.00 0.00
0.4800.480LoadP-CHWP-10-HTR_BUS4 1 100.00 0.00
0.4800.480LoadP-CHWP-10_BUS 1 100.00 0.00
0.4800.480LoadPA-2-A 1 100.00 0.00
0.1200.120LoadPB-2-A 1 100.00 0.00
13.80013.800LoadPoint of Connection 1 100.00 0.00
0.4800.480LoadRC1-VFD 1 100.00 0.00
0.4800.480LoadRC-1_BUS 1 100.00 0.00
Study Case: SC
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Filename: NIST CHP FINAL
Project: NIST CHP ETAP
Contract:
Date: 04-25-2018
Revision: Base
Config.: Normal
ID Type
Bus Initial Voltage
%Mag. Ang.Sub-sysBase kVNom. kV
0.4800.480LoadSCB-1_BUS 1 100.00 0.00
0.4800.480LoadSCB-2_BUS 1 100.00 0.00
4.1604.160LoadSG-4001 1 100.00 0.00
0.4800.480LoadT-CP-4 1 100.00 0.00
0.4800.480LoadTD-2-A PRI 1 100.00 0.00
0.1200.120LoadTD-2-A SEC 1 100.00 0.00
4.1604.160LoadTD-4001 Pri 1 100.00 0.00
0.4800.480LoadTD-4001 Sec 1 100.00 0.00
13.80013.800LoadTL-1301 Pri 1 100.00 0.00
4.1604.160LoadTL-1301 Sec 1 100.00 0.00
51Buses Total
All voltages reported by ETAP are in % of bus Nominal kV.
Base kV values of buses are calculated and used internally by ETAP.
Study Case: SC
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Filename: NIST CHP FINAL
Project: NIST CHP ETAP
Contract:
Date: 04-25-2018
Revision: Base
Config.: Normal
Line/Cable Input Data
ID Library Size #/Phase R
Line/Cable ohms or siemens/1000 ft per Conductor (Cable) or per Phase (Line)
Adj. (ft) % Tol.
Length
YXT ( C)
1P001A/B/C 500 25.0 3 0.02900750 0.00000000.048000.6MCUN1
1P002 4/0 15.0 1 0.06300750 0.00000000.051000.6MCUN1
1P003 8 175.0 1 0.77940750 0.00000000.034900.6NCUN3
1P004 1 30.0 1 0.15530750 0.00000000.032310.6NCUN3
1P005 12 165.0 1 1.97044750 0.00000000.035200.6NCUN3
1P006 12 165.0 1 1.97044750 0.00000000.035200.6NCUN3
1P007 10 125.0 1 1.23988750 0.00000000.033220.6NCUN3
1P008 1/0 350.0 1 0.12434750 0.00000000.031090.6NCUN3
1P009 12 125.0 1 1.97044750 0.00000000.035200.6NCUN3
1P010 12 125.0 1 1.97044750 0.00000000.035200.6NCUN3
1P011 4/0 15.0 1 0.06300750 0.00000000.051000.6MCUN1
1P012A/B/C 250 25.0 3 0.05520750 0.00000000.037900.6MCUN3
1P013A/B 350 150.0 2 0.03780750 0.00000000.037300.6MCUN3
1P014 12 150.0 1 1.97044750 0.00000000.035200.6NCUN3
1P015 6 150.0 1 0.49043750 0.00000000.035810.6NCUN3
1P016 12 150.0 1 1.97044750 0.00000000.035200.6NCUN3
1P017 6 140.0 1 0.49043750 0.00000000.035810.6NCUN3
1P018 12 140.0 1 1.97044750 0.00000000.035200.6NCUN3
1P020 8 130.0 1 0.77940750 0.00000000.034900.6NCUN3
1P021 8 130.0 1 0.77940750 0.00000000.034900.6NCUN3
1P042 12 100.0 1 1.97044750 0.00000000.035200.6NCUN3
1P043 4 100.0 1 0.30815750 0.00000000.033680.6NCUN3
1P044 4 100.0 1 0.30815750 0.00000000.033680.6NCUN3
1P046 12 100.0 1 1.97044750 0.00000000.035200.6NCUN3
1P053 6 120.0 1 0.49043750 0.00000000.035810.6NCUN3
1P054 6 35.0 1 0.49043750 0.00000000.035810.6NCUN3
1P065 8 40.0 1 0.77940750 0.00000000.034900.6NCUN3
1P066 8 50.0 1 0.77940750 0.00000000.034900.6NCUN3
1P067 12 50.0 1 1.97044750 0.00000000.035200.6NCUN3
1P073 12 125.0 1 1.97044750 0.00000000.035200.6NCUN3
4P001A/B/C/D 750 270.0 4 0.02230750 0.00000000.049705.0MCUS1
4P002A/B/C/D 750 125.0 4 0.02230750 0.00000000.049705.0MCUS1
4P006 2/0 280.0 1 0.10300750 0.00000000.063005.0MCUS1
4P007 2/0 10.0 1 0.10300750 0.00000000.063005.0MCUS1
4P008 1/0 25.0 1 0.12800750 0.00000000.063505.0MCUS1
13P001 500 1100.0 1 0.03338750 0.00000000.0990015MCUS1
Study Case: SC
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Filename: NIST CHP FINAL
Project: NIST CHP ETAP
Contract:
Date: 04-25-2018
Revision: Base
Config.: Normal
Line / Cable resistances are listed at the specified temperatures.
Study Case: SC
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Filename: NIST CHP FINAL
Project: NIST CHP ETAP
Contract:
Date: 04-25-2018
Revision: Base
Config.: Normal
2-Winding Transformer Input Data
ID MVA Prim. kV Sec. kV % Z X/R Prim. Sec.
Transformer % Tap Setting
% Tol.
Rating Z Variation
+ 5% - 5% % Z
Adjusted
TD-2-A 0.075 0.480 0.120 5.83 1.92 0 00 0 0 5.8300
TD-4001 0.750 4.160 0.480 5.75 3.96 0 00 0 0 5.7500
TL-1301 7.500 13.800 4.160 6.50 14.23 0 00 0 0 6.5000
NIST CHP ETAP SHORT-CIRCUIT ANALYSIS
Study Case: SC
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Filename: NIST CHP FINAL
Project: NIST CHP ETAP
Contract:
Date: 04-25-2018
Revision: Base
Config.: Normal
Branch Connections
ID From Bus To Bus R X ZType
CKT/Branch % Impedance, Pos. Seq., 100 MVAbConnected Bus ID
Y
TD-2-A TD-2-A PRI 3590.77 6894.28 7773.33TD-2-A SEC2W XFMR
TD-4001 TD-4001 Pri 187.71 743.33 766.67TD-4001 Sec2W XFMR
TL-1301 TL-1301 Pri 6.08 86.45 86.67TL-1301 Sec2W XFMR
1P001A/B/C TD-4001 Sec 10.49 17.36 20.28MCC-7Cable
1P002 MCC-7 41.02 33.20 52.77PA-2-ACable
1P003 MCC-7 5919.89 265.08 5925.82H3103_BUSCable
1P004 MCC-7 202.21 42.07 206.54TD-2-A PRICable
1P005 2O_BUS 14111.20 252.11 14113.45M3150_BUSCable
1P006 2O_BUS 14111.20 252.11 14113.45M3150-HTR_BUSCable
1P007 1O_BUS 6726.79 180.25 6729.20M-3220_BUSCable
1P008 MCC-7 1888.80 472.28 1946.95FGC-PPCable
1P009 MCC-7 10690.30 191.00 10692.01SCB-1_BUSCable
1P010 MCC-7 10690.30 191.00 10692.01SCB-2_BUSCable
1P011 TD-2-A SEC 656.25 531.25 844.33PB-2-ACable
1P012A/B/C MCC-7 19.97 13.71 24.22M1300 VFD_BUSCable
1P013A/B M1300 VFD_BUS 123.05 121.42 172.87M1330_BUSCable
1P014 M1300 VFD_BUS 12828.37 229.20 12830.41M1300-HTR_BUSCable
1P015 2C_BUS 3192.90 233.16 3201.40M6211_BUSCable
1P016 2C_BUS 12828.37 229.20 12830.41M6211-HTR_BUSCable
1P017 2I_BUS 2980.04 217.62 2987.97M6221_BUSCable
1P018 2I_BUS 11973.14 213.92 11975.05M6221-HTR_BUSCable
1P020 MCC-7 4397.63 196.92 4402.04AC-6 VFD_BUSCable
1P021 MCC-7 4397.63 196.92 4402.04AC-7 VFD_BUSCable
1P042 4A_BUS 8552.24 152.80 8553.61P-CHWP-9-HTR_BUSCable
1P043 4A_BUS 1337.47 146.18 1345.44P-CHWP-9_BUSCable
1P044 4G_BUS 1337.47 146.18 1345.44P-CHWP-10_BUSCable
1P046 4G_BUS 8552.24 152.80 8553.61P-CHWP-10-HTR_BUS4Cable
1P053 3A_BUS 2554.32 186.53 2561.12EF-25_BUSCable
1P054 3E_BUS 745.01 54.40 746.99EF-26_BUSCable
1P065 FGC-PP 1353.12 60.59 1354.47RC1-VFDCable
1P066 RC1-VFD 1691.40 75.74 1693.09RC-1_BUSCable
1P067 MCC-7 4276.12 76.40 4276.80T-CP-4Cable
1P073 1O_BUS 10690.30 191.00 10692.01M-3320-HTR_BUSCable
4P001A/B/C/D TL-1301 Sec 0.87 1.94 2.12SG-4001Cable
4P002A/B/C/D SG-4001 0.40 0.90 0.98CTG-1_BUSCable
4P006 SG-4001 16.67 10.19 19.54FGC-1 StarterCable
Study Case: SC
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Filename: NIST CHP FINAL
Project: NIST CHP ETAP
Contract:
Date: 04-25-2018
Revision: Base
Config.: Normal
ID From Bus To Bus R X ZType
CKT/Branch % Impedance, Pos. Seq., 100 MVAbConnected Bus ID
Y
4P007 SG-4001 0.60 0.36 0.70TD-4001 PriCable
4P008 FGC-1 Starter 1.85 0.92 2.06FGC-01_BUSCable
13P001 Point of Connection 1.93 5.72 6.03TL-1301 PriCable
1O MCC-7 1O_BUSTie Breaker
2C MCC-7 2C_BUSTie Breaker
2I MCC-7 2I_BUSTie Breaker
2O MCC-7 2O_BUSTie Breaker
3A MCC-7 3A_BUSTie Breaker
3E MCC-7 3E_BUSTie Breaker
4A MCC-7 4A_BUSTie Breaker
4G MCC-7 4G_BUSTie Breaker
BUS C-B TIE BUS B BusCTie Breaker
BUS C-D TIE BUS D BusCTie Breaker
FC-9 BusC Point of ConnectionTie Breaker
Study Case: SC
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Filename: NIST CHP FINAL
Project: NIST CHP ETAP
Contract:
Date: 04-25-2018
Revision: Base
Config.: Normal
Power Grid Input Data
ID ID MVASC kV R X
Rating
X/R
100 MVA Base % Impedance
Power Grid Connected Bus
PEPCO CONTRIBUTION 13.800 19.904670.83986501.948BusC 23.70
Total Connected Power Grids (= 1 ): 501.948 MVA
Synchronous Generator Input Data
Xd"
Xd'ID Type ID
Connected Bus
% Impedance in Machine Base
X/R RatioRatingSynchronous Generator
Adj. Tol.RX'/RX"/RRPMkVMVA
0.37949.0549.0518004.1609.375CTG-1 Turbo 28.00CTG-1_BUS 0.018.60
Total Connected Synchronous Generators ( = 1 ): 9.375 MVA
Study Case: SC
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Project: NIST CHP ETAP
Contract:
Date: 04-25-2018
Revision: Base
Config.: Normal
Induction Machine Input Data kVA kV RPM X"/R X'/R R X'X"
Induction Machine Rating X/R Ratio Machine BaseConnected Bus
IDID
% Impedance
HP/kWQty
Motors
FGC-01 1 FGC-01_BUS 4.160 1.0716.5216.521800 17.65 44.12450.00 396.36
AC-6 1 AC-6 VFD_BUS 0.480 9.233.023.021800 27.83 9999.0015.00 16.73
AC-7 1 AC-7 VFD_BUS 0.480 9.233.023.021800 27.83 9999.0015.00 16.73
EF-25 1 EF-25_BUS 0.480 9.233.023.021800 27.83 9999.0015.00 16.73
EF-26 1 EF-26_BUS 0.480 9.233.023.021800 27.83 9999.0015.00 16.73
M1300 1 M1330_BUS 0.480 2.109.549.541800 20.00 50.00150.00 131.89
M3150 1 M3150_BUS 0.480 20.631.351.351800 27.83 9999.003.00 3.81
M-3220 1 M-3220_BUS 0.480 13.052.132.131800 27.83 9999.007.50 8.76
M6211 1 M6211_BUS 0.480 7.993.483.481800 27.83 9999.0020.00 21.51
M6221 1 M6221_BUS 0.480 7.993.483.481800 27.83 9999.0020.00 21.51
P-CHWP-9 1 P-CHWP-9_BUS 0.480 7.153.893.891800 27.83 9999.0025.00 27.09
P-CHWP-10 1 P-CHWP-10_BUS 0.480 7.153.893.891800 27.83 9999.0025.00 27.09
RC-1 1 RC-1_BUS 0.480 7.993.483.481800 27.83 9999.0020.00 21.51
SCB-1 1 SCB-1_BUS 0.480 17.871.561.561800 27.83 9999.004.00 4.94
SCB-2 1 SCB-2_BUS 0.480 17.871.561.561800 27.83 9999.004.00 4.94
CP-4A 1 T-CP-4 0.480 35.740.780.781800 27.83 9999.001.00 1.42
CP-4B 1 T-CP-4 0.480 35.740.780.781800 27.83 9999.001.00 1.42
Total Connected Induction Motors ( = 17 ): 739.2 kVA
Study Case: SC
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Filename: NIST CHP FINAL
Project: NIST CHP ETAP
Contract:
Date: 04-25-2018
Revision: Base
Config.: Normal
SHORT-CIRCUIT REPORT
= 100.00 % of nominal bus kV (0.480 kV)
= 100.00 % of base (0.480 kV)
Prefault voltage = 0.480 kV
3-phase fault at bus: 1O_BUS
ID Magnitude/RealRealFrom BusID Imaginary
From Bus To Bus % V kA kA Imag. kA Symm.
Contribution 1/2 Cycle
Total 15.6584.13.6940.001O_BUS -15.216
1O_BUS 0.0342.00.0151.90M-3220_BUS -0.031
1O_BUS 0.000999.90.0000.00M-3320-HTR_BUS 0.000
MCC-7 14.0364.13.3292.37TD-4001 Sec -13.636
MCC-7 0.000999.90.0000.00PA-2-A 0.000
MCC-7 0.000999.90.0000.00H3103_BUS 0.000
MCC-7 0.000999.90.0000.00TD-2-A PRI 0.000
MCC-7 0.0883.10.0271.42FGC-PP -0.084
MCC-7 0.0181.50.0101.58SCB-1_BUS -0.015
MCC-7 0.0181.50.0101.58SCB-2_BUS -0.015
MCC-7 0.7818.80.0880.16M1300 VFD_BUS -0.776
MCC-7 0.0682.80.0232.49AC-6 VFD_BUS -0.064
MCC-7 0.0682.80.0232.49AC-7 VFD_BUS -0.064
MCC-7 0.0080.80.0060.27T-CP-4 -0.005
4G_BUS 0.1133.70.0291.26P-CHWP-10_BUS -0.109
4G_BUS 0.000999.90.0000.00P-CHWP-10-HTR_BUS4 0.000
4A_BUS 0.000999.90.0000.00P-CHWP-9-HTR_BUS 0.000
4A_BUS 0.1133.70.0291.26P-CHWP-9_BUS -0.109
3E_BUS 0.0693.00.0220.43EF-26_BUS -0.065
3A_BUS 0.0682.90.0221.45EF-25_BUS -0.064
2O_BUS 0.0131.30.0081.54M3150_BUS -0.010
2O_BUS 0.000999.90.0000.00M3150-HTR_BUS 0.000
2I_BUS 0.0893.20.0262.20M6221_BUS -0.085
2I_BUS 0.000999.90.0000.00M6221-HTR_BUS 0.000
2C_BUS 0.0893.20.0262.36M6211_BUS -0.085
2C_BUS 0.000999.90.0000.00M6211-HTR_BUS 0.000
1O_BUS 15.6254.13.6790.00MCC-7 -15.185*
MCC-7 0.0893.20.0260.002C_BUS -0.085*
MCC-7 0.0893.20.0260.002I_BUS -0.085*
Study Case: SC
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Filename: NIST CHP FINAL
Project: NIST CHP ETAP
Contract:
Date: 04-25-2018
Revision: Base
Config.: Normal
= 100.00 % of nominal bus kV (0.480 kV)
= 100.00 % of base (0.480 kV)
Prefault voltage = 0.480 kV
3-phase fault at bus: 1O_BUS
(Cont.)
ID Magnitude/RealRealFrom BusID Imaginary
From Bus To Bus % V kA kA Imag. kA Symm.
Contribution 1/2 Cycle
MCC-7 0.0131.30.0080.002O_BUS -0.010*
MCC-7 0.0682.90.0220.003A_BUS -0.064*
MCC-7 0.0693.00.0220.003E_BUS -0.065*
MCC-7 0.1133.70.0290.004A_BUS -0.109*
MCC-7 0.1133.70.0290.004G_BUS -0.109*
NACD Ratio = 1.00
# Indicates a fault current contribution from a three-winding transformer.
* Indicates a fault current through a tie circuit breaker.
If the faulted bus is involved in loops formed by protection devices, the short-circuit contributions through these protective devices will not be reported.
Study Case: SC
16.2.0C Page: 14
SN:
Filename: NIST CHP FINAL
Project: NIST CHP ETAP
Contract:
Date: 04-25-2018
Revision: Base
Config.: Normal
= 100.00 % of nominal bus kV (0.480 kV)
= 100.00 % of base (0.480 kV)
Prefault voltage = 0.480 kV
3-phase fault at bus: 2C_BUS
ID Magnitude/RealRealFrom BusID Imaginary
From Bus To Bus % V kA kA Imag. kA Symm.
Contribution 1/2 Cycle
Total 15.6584.13.6940.002C_BUS -15.216
2C_BUS 0.0893.20.0262.36M6211_BUS -0.085
2C_BUS 0.000999.90.0000.00M6211-HTR_BUS 0.000
MCC-7 14.0364.13.3292.37TD-4001 Sec -13.636
MCC-7 0.000999.90.0000.00PA-2-A 0.000
MCC-7 0.000999.90.0000.00H3103_BUS 0.000
MCC-7 0.000999.90.0000.00TD-2-A PRI 0.000
MCC-7 0.0883.10.0271.42FGC-PP -0.084
MCC-7 0.0181.50.0101.58SCB-1_BUS -0.015
MCC-7 0.0181.50.0101.58SCB-2_BUS -0.015
MCC-7 0.7818.80.0880.16M1300 VFD_BUS -0.776
MCC-7 0.0682.80.0232.49AC-6 VFD_BUS -0.064
MCC-7 0.0682.80.0232.49AC-7 VFD_BUS -0.064
MCC-7 0.0080.80.0060.27T-CP-4 -0.005
4G_BUS 0.1133.70.0291.26P-CHWP-10_BUS -0.109
4G_BUS 0.000999.90.0000.00P-CHWP-10-HTR_BUS4 0.000
4A_BUS 0.000999.90.0000.00P-CHWP-9-HTR_BUS 0.000
4A_BUS 0.1133.70.0291.26P-CHWP-9_BUS -0.109
3E_BUS 0.0693.00.0220.43EF-26_BUS -0.065
3A_BUS 0.0682.90.0221.45EF-25_BUS -0.064
2O_BUS 0.0131.30.0081.54M3150_BUS -0.010
2O_BUS 0.000999.90.0000.00M3150-HTR_BUS 0.000
2I_BUS 0.0893.20.0262.20M6221_BUS -0.085
2I_BUS 0.000999.90.0000.00M6221-HTR_BUS 0.000
1O_BUS 0.0342.00.0151.90M-3220_BUS -0.031
1O_BUS 0.000999.90.0000.00M-3320-HTR_BUS 0.000
MCC-7 0.0342.00.0150.001O_BUS -0.031*
2C_BUS 15.5694.13.6670.00MCC-7 -15.131*
MCC-7 0.0893.20.0260.002I_BUS -0.085*
MCC-7 0.0131.30.0080.002O_BUS -0.010*
MCC-7 0.0682.90.0220.003A_BUS -0.064*
Study Case: SC
16.2.0C Page: 15
SN:
Filename: NIST CHP FINAL
Project: NIST CHP ETAP
Contract:
Date: 04-25-2018
Revision: Base
Config.: Normal
= 100.00 % of nominal bus kV (0.480 kV)
= 100.00 % of base (0.480 kV)
Prefault voltage = 0.480 kV
3-phase fault at bus: 2C_BUS
(Cont.)
ID Magnitude/RealRealFrom BusID Imaginary
From Bus To Bus % V kA kA Imag. kA Symm.
Contribution 1/2 Cycle
MCC-7 0.0693.00.0220.003E_BUS -0.065*
MCC-7 0.1133.70.0290.004A_BUS -0.109*
MCC-7 0.1133.70.0290.004G_BUS -0.109*
NACD Ratio = 1.00
# Indicates a fault current contribution from a three-winding transformer.
If the faulted bus is involved in loops formed by protection devices, the short-circuit contributions through these protective devices will not be reported.
Study Case: SC
16.2.0C Page: 16
SN:
Filename: NIST CHP FINAL
Project: NIST CHP ETAP
Contract:
Date: 04-25-2018
Revision: Base
Config.: Normal
= 100.00 % of nominal bus kV (0.480 kV)
= 100.00 % of base (0.480 kV)
Prefault voltage = 0.480 kV
3-phase fault at bus: 2I_BUS
ID Magnitude/RealRealFrom BusID Imaginary
From Bus To Bus % V kA kA Imag. kA Symm.
Contribution 1/2 Cycle
Total 15.6584.13.6940.002I_BUS -15.216
2I_BUS 0.0893.20.0262.20M6221_BUS -0.085
2I_BUS 0.000999.90.0000.00M6221-HTR_BUS 0.000
MCC-7 14.0364.13.3292.37TD-4001 Sec -13.636
MCC-7 0.000999.90.0000.00PA-2-A 0.000
MCC-7 0.000999.90.0000.00H3103_BUS 0.000
MCC-7 0.000999.90.0000.00TD-2-A PRI 0.000
MCC-7 0.0883.10.0271.42FGC-PP -0.084
MCC-7 0.0181.50.0101.58SCB-1_BUS -0.015
MCC-7 0.0181.50.0101.58SCB-2_BUS -0.015
MCC-7 0.7818.80.0880.16M1300 VFD_BUS -0.776
MCC-7 0.0682.80.0232.49AC-6 VFD_BUS -0.064
MCC-7 0.0682.80.0232.49AC-7 VFD_BUS -0.064
MCC-7 0.0080.80.0060.27T-CP-4 -0.005
4G_BUS 0.1133.70.0291.26P-CHWP-10_BUS -0.109
4G_BUS 0.000999.90.0000.00P-CHWP-10-HTR_BUS4 0.000
4A_BUS 0.000999.90.0000.00P-CHWP-9-HTR_BUS 0.000
4A_BUS 0.1133.70.0291.26P-CHWP-9_BUS -0.109
3E_BUS 0.0693.00.0220.43EF-26_BUS -0.065
3A_BUS 0.0682.90.0221.45EF-25_BUS -0.064
2O_BUS 0.0131.30.0081.54M3150_BUS -0.010
2O_BUS 0.000999.90.0000.00M3150-HTR_BUS 0.000
2C_BUS 0.0893.20.0262.36M6211_BUS -0.085
2C_BUS 0.000999.90.0000.00M6211-HTR_BUS 0.000
1O_BUS 0.0342.00.0151.90M-3220_BUS -0.031
1O_BUS 0.000999.90.0000.00M-3320-HTR_BUS 0.000
MCC-7 0.0342.00.0150.001O_BUS -0.031*
MCC-7 0.0893.20.0260.002C_BUS -0.085*
2I_BUS 15.5694.13.6670.00MCC-7 -15.131*
Study Case: SC
16.2.0C Page: 17
SN:
Filename: NIST CHP FINAL
Project: NIST CHP ETAP
Contract:
Date: 04-25-2018
Revision: Base
Config.: Normal
= 100.00 % of nominal bus kV (0.480 kV)
= 100.00 % of base (0.480 kV)
Prefault voltage = 0.480 kV
3-phase fault at bus: 2I_BUS
(Cont.)
ID Magnitude/RealRealFrom BusID Imaginary
From Bus To Bus % V kA kA Imag. kA Symm.
Contribution 1/2 Cycle
MCC-7 0.0693.00.0220.003E_BUS -0.065*
MCC-7 0.1133.70.0290.004A_BUS -0.109*
MCC-7 0.1133.70.0290.004G_BUS -0.109*
NACD Ratio = 1.00
# Indicates a fault current contribution from a three-winding transformer.
If the faulted bus is involved in loops formed by protection devices, the short-circuit contributions through these protective devices will not be reported.
Study Case: SC
16.2.0C Page: 18
SN:
Filename: NIST CHP FINAL
Project: NIST CHP ETAP
Contract:
Date: 04-25-2018
Revision: Base
Config.: Normal
= 100.00 % of nominal bus kV (0.480 kV)
= 100.00 % of base (0.480 kV)
Prefault voltage = 0.480 kV
3-phase fault at bus: 2O_BUS
ID Magnitude/RealRealFrom BusID Imaginary
From Bus To Bus % V kA kA Imag. kA Symm.
Contribution 1/2 Cycle
Total 15.6584.13.6940.002O_BUS -15.216
2O_BUS 0.0131.30.0081.54M3150_BUS -0.010
2O_BUS 0.000999.90.0000.00M3150-HTR_BUS 0.000
MCC-7 14.0364.13.3292.37TD-4001 Sec -13.636
MCC-7 0.000999.90.0000.00PA-2-A 0.000
MCC-7 0.000999.90.0000.00H3103_BUS 0.000
MCC-7 0.000999.90.0000.00TD-2-A PRI 0.000
MCC-7 0.0883.10.0271.42FGC-PP -0.084
MCC-7 0.0181.50.0101.58SCB-1_BUS -0.015
MCC-7 0.0181.50.0101.58SCB-2_BUS -0.015
MCC-7 0.7818.80.0880.16M1300 VFD_BUS -0.776
MCC-7 0.0682.80.0232.49AC-6 VFD_BUS -0.064
MCC-7 0.0682.80.0232.49AC-7 VFD_BUS -0.064
MCC-7 0.0080.80.0060.27T-CP-4 -0.005
4G_BUS 0.1133.70.0291.26P-CHWP-10_BUS -0.109
4G_BUS 0.000999.90.0000.00P-CHWP-10-HTR_BUS4 0.000
4A_BUS 0.000999.90.0000.00P-CHWP-9-HTR_BUS 0.000
4A_BUS 0.1133.70.0291.26P-CHWP-9_BUS -0.109
3E_BUS 0.0693.00.0220.43EF-26_BUS -0.065
3A_BUS 0.0682.90.0221.45EF-25_BUS -0.064
2I_BUS 0.0893.20.0262.20M6221_BUS -0.085
2I_BUS 0.000999.90.0000.00M6221-HTR_BUS 0.000
2C_BUS 0.0893.20.0262.36M6211_BUS -0.085
2C_BUS 0.000999.90.0000.00M6211-HTR_BUS 0.000
1O_BUS 0.0342.00.0151.90M-3220_BUS -0.031
1O_BUS 0.000999.90.0000.00M-3320-HTR_BUS 0.000
MCC-7 0.0342.00.0150.001O_BUS -0.031*
MCC-7 0.0893.20.0260.002C_BUS -0.085*
MCC-7 0.0893.20.0260.002I_BUS -0.085*
2O_BUS 15.6464.13.6860.00MCC-7 -15.205*
Study Case: SC
16.2.0C Page: 19
SN:
Filename: NIST CHP FINAL
Project: NIST CHP ETAP
Contract:
Date: 04-25-2018
Revision: Base
Config.: Normal
= 100.00 % of nominal bus kV (0.480 kV)
= 100.00 % of base (0.480 kV)
Prefault voltage = 0.480 kV
3-phase fault at bus: 2O_BUS
(Cont.)
ID Magnitude/RealRealFrom BusID Imaginary
From Bus To Bus % V kA kA Imag. kA Symm.
Contribution 1/2 Cycle
MCC-7 0.0693.00.0220.003E_BUS -0.065*
MCC-7 0.1133.70.0290.004A_BUS -0.109*
MCC-7 0.1133.70.0290.004G_BUS -0.109*
NACD Ratio = 1.00
# Indicates a fault current contribution from a three-winding transformer.
If the faulted bus is involved in loops formed by protection devices, the short-circuit contributions through these protective devices will not be reported.
Study Case: SC
16.2.0C Page: 20
SN:
Filename: NIST CHP FINAL
Project: NIST CHP ETAP
Contract:
Date: 04-25-2018
Revision: Base
Config.: Normal
= 100.00 % of nominal bus kV (0.480 kV)
= 100.00 % of base (0.480 kV)
Prefault voltage = 0.480 kV
3-phase fault at bus: 3A_BUS
ID Magnitude/RealRealFrom BusID Imaginary
From Bus To Bus % V kA kA Imag. kA Symm.
Contribution 1/2 Cycle
Total 15.6584.13.6940.003A_BUS -15.216
3A_BUS 0.0682.90.0221.45EF-25_BUS -0.064
MCC-7 14.0364.13.3292.37TD-4001 Sec -13.636
MCC-7 0.000999.90.0000.00PA-2-A 0.000
MCC-7 0.000999.90.0000.00H3103_BUS 0.000
MCC-7 0.000999.90.0000.00TD-2-A PRI 0.000
MCC-7 0.0883.10.0271.42FGC-PP -0.084
MCC-7 0.0181.50.0101.58SCB-1_BUS -0.015
MCC-7 0.0181.50.0101.58SCB-2_BUS -0.015
MCC-7 0.7818.80.0880.16M1300 VFD_BUS -0.776
MCC-7 0.0682.80.0232.49AC-6 VFD_BUS -0.064
MCC-7 0.0682.80.0232.49AC-7 VFD_BUS -0.064
MCC-7 0.0080.80.0060.27T-CP-4 -0.005
4G_BUS 0.1133.70.0291.26P-CHWP-10_BUS -0.109
4G_BUS 0.000999.90.0000.00P-CHWP-10-HTR_BUS4 0.000
4A_BUS 0.000999.90.0000.00P-CHWP-9-HTR_BUS 0.000
4A_BUS 0.1133.70.0291.26P-CHWP-9_BUS -0.109
3E_BUS 0.0693.00.0220.43EF-26_BUS -0.065
2O_BUS 0.0131.30.0081.54M3150_BUS -0.010
2O_BUS 0.000999.90.0000.00M3150-HTR_BUS 0.000
2I_BUS 0.0893.20.0262.20M6221_BUS -0.085
2I_BUS 0.000999.90.0000.00M6221-HTR_BUS 0.000
2C_BUS 0.0893.20.0262.36M6211_BUS -0.085
2C_BUS 0.000999.90.0000.00M6211-HTR_BUS 0.000
1O_BUS 0.0342.00.0151.90M-3220_BUS -0.031
1O_BUS 0.000999.90.0000.00M-3320-HTR_BUS 0.000
MCC-7 0.0342.00.0150.001O_BUS -0.031*
MCC-7 0.0893.20.0260.002C_BUS -0.085*
MCC-7 0.0893.20.0260.002I_BUS -0.085*
3A_BUS 15.5904.13.6710.00MCC-7 -15.151*
Study Case: SC
16.2.0C Page: 21
SN:
Filename: NIST CHP FINAL
Project: NIST CHP ETAP
Contract:
Date: 04-25-2018
Revision: Base
Config.: Normal
= 100.00 % of nominal bus kV (0.480 kV)
= 100.00 % of base (0.480 kV)
Prefault voltage = 0.480 kV
3-phase fault at bus: 3A_BUS
(Cont.)
ID Magnitude/RealRealFrom BusID Imaginary
From Bus To Bus % V kA kA Imag. kA Symm.
Contribution 1/2 Cycle
MCC-7 0.0693.00.0220.003E_BUS -0.065*
MCC-7 0.1133.70.0290.004A_BUS -0.109*
MCC-7 0.1133.70.0290.004G_BUS -0.109*
NACD Ratio = 1.00
# Indicates a fault current contribution from a three-winding transformer.
If the faulted bus is involved in loops formed by protection devices, the short-circuit contributions through these protective devices will not be reported.
Study Case: SC
16.2.0C Page: 22
SN:
Filename: NIST CHP FINAL
Project: NIST CHP ETAP
Contract:
Date: 04-25-2018
Revision: Base
Config.: Normal
= 100.00 % of nominal bus kV (0.480 kV)
= 100.00 % of base (0.480 kV)
Prefault voltage = 0.480 kV
3-phase fault at bus: 3E_BUS
ID Magnitude/RealRealFrom BusID Imaginary
From Bus To Bus % V kA kA Imag. kA Symm.
Contribution 1/2 Cycle
Total 15.6584.13.6940.003E_BUS -15.216
3E_BUS 0.0693.00.0220.43EF-26_BUS -0.065
MCC-7 14.0364.13.3292.37TD-4001 Sec -13.636
MCC-7 0.000999.90.0000.00PA-2-A 0.000
MCC-7 0.000999.90.0000.00H3103_BUS 0.000
MCC-7 0.000999.90.0000.00TD-2-A PRI 0.000
MCC-7 0.0883.10.0271.42FGC-PP -0.084
MCC-7 0.0181.50.0101.58SCB-1_BUS -0.015
MCC-7 0.0181.50.0101.58SCB-2_BUS -0.015
MCC-7 0.7818.80.0880.16M1300 VFD_BUS -0.776
MCC-7 0.0682.80.0232.49AC-6 VFD_BUS -0.064
MCC-7 0.0682.80.0232.49AC-7 VFD_BUS -0.064
MCC-7 0.0080.80.0060.27T-CP-4 -0.005
4G_BUS 0.1133.70.0291.26P-CHWP-10_BUS -0.109
4G_BUS 0.000999.90.0000.00P-CHWP-10-HTR_BUS4 0.000
4A_BUS 0.000999.90.0000.00P-CHWP-9-HTR_BUS 0.000
4A_BUS 0.1133.70.0291.26P-CHWP-9_BUS -0.109
3A_BUS 0.0682.90.0221.45EF-25_BUS -0.064
2O_BUS 0.0131.30.0081.54M3150_BUS -0.010
2O_BUS 0.000999.90.0000.00M3150-HTR_BUS 0.000
2I_BUS 0.0893.20.0262.20M6221_BUS -0.085
2I_BUS 0.000999.90.0000.00M6221-HTR_BUS 0.000
2C_BUS 0.0893.20.0262.36M6211_BUS -0.085
2C_BUS 0.000999.90.0000.00M6211-HTR_BUS 0.000
1O_BUS 0.0342.00.0151.90M-3220_BUS -0.031
1O_BUS 0.000999.90.0000.00M-3320-HTR_BUS 0.000
MCC-7 0.0342.00.0150.001O_BUS -0.031*
MCC-7 0.0893.20.0260.002C_BUS -0.085*
MCC-7 0.0893.20.0260.002I_BUS -0.085*
Study Case: SC
16.2.0C Page: 23
SN:
Filename: NIST CHP FINAL
Project: NIST CHP ETAP
Contract:
Date: 04-25-2018
Revision: Base
Config.: Normal
= 100.00 % of nominal bus kV (0.480 kV)
= 100.00 % of base (0.480 kV)
Prefault voltage = 0.480 kV
3-phase fault at bus: 3E_BUS
(Cont.)
ID Magnitude/RealRealFrom BusID Imaginary
From Bus To Bus % V kA kA Imag. kA Symm.
Contribution 1/2 Cycle
3E_BUS 15.5894.13.6720.00MCC-7 -15.151*
MCC-7 0.1133.70.0290.004A_BUS -0.109*
MCC-7 0.1133.70.0290.004G_BUS -0.109*
NACD Ratio = 1.00
# Indicates a fault current contribution from a three-winding transformer.
If the faulted bus is involved in loops formed by protection devices, the short-circuit contributions through these protective devices will not be reported.
Study Case: SC
16.2.0C Page: 24
SN:
Filename: NIST CHP FINAL
Project: NIST CHP ETAP
Contract:
Date: 04-25-2018
Revision: Base
Config.: Normal
= 100.00 % of nominal bus kV (0.480 kV)
= 100.00 % of base (0.480 kV)
Prefault voltage = 0.480 kV
3-phase fault at bus: 4A_BUS
ID Magnitude/RealRealFrom BusID Imaginary
From Bus To Bus % V kA kA Imag. kA Symm.
Contribution 1/2 Cycle
Total 15.6584.13.6940.004A_BUS -15.216
4A_BUS 0.000999.90.0000.00P-CHWP-9-HTR_BUS 0.000
4A_BUS 0.1133.70.0291.26P-CHWP-9_BUS -0.109
MCC-7 14.0364.13.3292.37TD-4001 Sec -13.636
MCC-7 0.000999.90.0000.00PA-2-A 0.000
MCC-7 0.000999.90.0000.00H3103_BUS 0.000
MCC-7 0.000999.90.0000.00TD-2-A PRI 0.000
MCC-7 0.0883.10.0271.42FGC-PP -0.084
MCC-7 0.0181.50.0101.58SCB-1_BUS -0.015
MCC-7 0.0181.50.0101.58SCB-2_BUS -0.015
MCC-7 0.7818.80.0880.16M1300 VFD_BUS -0.776
MCC-7 0.0682.80.0232.49AC-6 VFD_BUS -0.064
MCC-7 0.0682.80.0232.49AC-7 VFD_BUS -0.064
MCC-7 0.0080.80.0060.27T-CP-4 -0.005
4G_BUS 0.1133.70.0291.26P-CHWP-10_BUS -0.109
4G_BUS 0.000999.90.0000.00P-CHWP-10-HTR_BUS4 0.000
3E_BUS 0.0693.00.0220.43EF-26_BUS -0.065
3A_BUS 0.0682.90.0221.45EF-25_BUS -0.064
2O_BUS 0.0131.30.0081.54M3150_BUS -0.010
2O_BUS 0.000999.90.0000.00M3150-HTR_BUS 0.000
2I_BUS 0.0893.20.0262.20M6221_BUS -0.085
2I_BUS 0.000999.90.0000.00M6221-HTR_BUS 0.000
2C_BUS 0.0893.20.0262.36M6211_BUS -0.085
2C_BUS 0.000999.90.0000.00M6211-HTR_BUS 0.000
1O_BUS 0.0342.00.0151.90M-3220_BUS -0.031
1O_BUS 0.000999.90.0000.00M-3320-HTR_BUS 0.000
MCC-7 0.0342.00.0150.001O_BUS -0.031*
MCC-7 0.0893.20.0260.002C_BUS -0.085*
MCC-7 0.0893.20.0260.002I_BUS -0.085*
Study Case: SC
16.2.0C Page: 25
SN:
Filename: NIST CHP FINAL
Project: NIST CHP ETAP
Contract:
Date: 04-25-2018
Revision: Base
Config.: Normal
= 100.00 % of nominal bus kV (0.480 kV)
= 100.00 % of base (0.480 kV)
Prefault voltage = 0.480 kV
3-phase fault at bus: 4A_BUS
(Cont.)
ID Magnitude/RealRealFrom BusID Imaginary
From Bus To Bus % V kA kA Imag. kA Symm.
Contribution 1/2 Cycle
MCC-7 0.0693.00.0220.003E_BUS -0.065*
4A_BUS 15.5454.13.6640.00MCC-7 -15.107*
MCC-7 0.1133.70.0290.004G_BUS -0.109*
NACD Ratio = 1.00
# Indicates a fault current contribution from a three-winding transformer.
If the faulted bus is involved in loops formed by protection devices, the short-circuit contributions through these protective devices will not be reported.
Study Case: SC
16.2.0C Page: 26
SN:
Filename: NIST CHP FINAL
Project: NIST CHP ETAP
Contract:
Date: 04-25-2018
Revision: Base
Config.: Normal
= 100.00 % of nominal bus kV (0.480 kV)
= 100.00 % of base (0.480 kV)
Prefault voltage = 0.480 kV
3-phase fault at bus: 4G_BUS
ID Magnitude/RealRealFrom BusID Imaginary
From Bus To Bus % V kA kA Imag. kA Symm.
Contribution 1/2 Cycle
Total 15.6584.13.6940.004G_BUS -15.216
4G_BUS 0.1133.70.0291.26P-CHWP-10_BUS -0.109
4G_BUS 0.000999.90.0000.00P-CHWP-10-HTR_BUS4 0.000
MCC-7 14.0364.13.3292.37TD-4001 Sec -13.636
MCC-7 0.000999.90.0000.00PA-2-A 0.000
MCC-7 0.000999.90.0000.00H3103_BUS 0.000
MCC-7 0.000999.90.0000.00TD-2-A PRI 0.000
MCC-7 0.0883.10.0271.42FGC-PP -0.084
MCC-7 0.0181.50.0101.58SCB-1_BUS -0.015
MCC-7 0.0181.50.0101.58SCB-2_BUS -0.015
MCC-7 0.7818.80.0880.16M1300 VFD_BUS -0.776
MCC-7 0.0682.80.0232.49AC-6 VFD_BUS -0.064
MCC-7 0.0682.80.0232.49AC-7 VFD_BUS -0.064
MCC-7 0.0080.80.0060.27T-CP-4 -0.005
4A_BUS 0.000999.90.0000.00P-CHWP-9-HTR_BUS 0.000
4A_BUS 0.1133.70.0291.26P-CHWP-9_BUS -0.109
3E_BUS 0.0693.00.0220.43EF-26_BUS -0.065
3A_BUS 0.0682.90.0221.45EF-25_BUS -0.064
2O_BUS 0.0131.30.0081.54M3150_BUS -0.010
2O_BUS 0.000999.90.0000.00M3150-HTR_BUS 0.000
2I_BUS 0.0893.20.0262.20M6221_BUS -0.085
2I_BUS 0.000999.90.0000.00M6221-HTR_BUS 0.000
2C_BUS 0.0893.20.0262.36M6211_BUS -0.085
2C_BUS 0.000999.90.0000.00M6211-HTR_BUS 0.000
1O_BUS 0.0342.00.0151.90M-3220_BUS -0.031
1O_BUS 0.000999.90.0000.00M-3320-HTR_BUS 0.000
MCC-7 0.0342.00.0150.001O_BUS -0.031*
MCC-7 0.0893.20.0260.002C_BUS -0.085*
MCC-7 0.0893.20.0260.002I_BUS -0.085*
Study Case: SC
16.2.0C Page: 27
SN:
Filename: NIST CHP FINAL
Project: NIST CHP ETAP
Contract:
Date: 04-25-2018
Revision: Base
Config.: Normal
= 100.00 % of nominal bus kV (0.480 kV)
= 100.00 % of base (0.480 kV)
Prefault voltage = 0.480 kV
3-phase fault at bus: 4G_BUS
(Cont.)
ID Magnitude/RealRealFrom BusID Imaginary
From Bus To Bus % V kA kA Imag. kA Symm.
Contribution 1/2 Cycle
MCC-7 0.0693.00.0220.003E_BUS -0.065*
MCC-7 0.1133.70.0290.004A_BUS -0.109*
4G_BUS 15.5454.13.6640.00MCC-7 -15.107*
NACD Ratio = 1.00
# Indicates a fault current contribution from a three-winding transformer.
If the faulted bus is involved in loops formed by protection devices, the short-circuit contributions through these protective devices will not be reported.
Study Case: SC
16.2.0C Page: 28
SN:
Filename: NIST CHP FINAL
Project: NIST CHP ETAP
Contract:
Date: 04-25-2018
Revision: Base
Config.: Normal
= 100.00 % of nominal bus kV (0.480 kV)
= 100.00 % of base (0.480 kV)
Prefault voltage = 0.480 kV
3-phase fault at bus: AC-6 VFD_BUS
ID Magnitude/RealRealFrom BusID Imaginary
From Bus To Bus % V kA kA Imag. kA Symm.
Contribution 1/2 Cycle
Total 2.6070.22.5410.00AC-6 VFD_BUS -0.586
AC-6 VFD_BUS 2.5720.22.51994.14MCC-7 -0.521
AC-6 VFD_BUS 0.0693.00.022100.00AC-6 -0.065
NACD Ratio = 1.00
# Indicates a fault current contribution from a three-winding transformer.
If the faulted bus is involved in loops formed by protection devices, the short-circuit contributions through these protective devices will not be reported.
Study Case: SC
16.2.0C Page: 29
SN:
Filename: NIST CHP FINAL
Project: NIST CHP ETAP
Contract:
Date: 04-25-2018
Revision: Base
Config.: Normal
= 100.00 % of nominal bus kV (0.480 kV)
= 100.00 % of base (0.480 kV)
Prefault voltage = 0.480 kV
3-phase fault at bus: AC-7 VFD_BUS
ID Magnitude/RealRealFrom BusID Imaginary
From Bus To Bus % V kA kA Imag. kA Symm.
Contribution 1/2 Cycle
Total 2.6070.22.5410.00AC-7 VFD_BUS -0.586
AC-7 VFD_BUS 2.5720.22.51994.14MCC-7 -0.521
AC-7 VFD_BUS 0.0693.00.022100.00AC-7 -0.065
NACD Ratio = 1.00
# Indicates a fault current contribution from a three-winding transformer.
If the faulted bus is involved in loops formed by protection devices, the short-circuit contributions through these protective devices will not be reported.
Study Case: SC
16.2.0C Page: 30
SN:
Filename: NIST CHP FINAL
Project: NIST CHP ETAP
Contract:
Date: 04-25-2018
Revision: Base
Config.: Normal
= 100.00 % of nominal bus kV (13.800 kV)
= 100.00 % of base (13.800 kV)
Prefault voltage = 13.800 kV
3-phase fault at bus: BUS B
ID Magnitude/RealImaginaryRealFrom BusMagnitude/RealRealFrom BusID Imaginary
From Bus To Bus % V kA kA Imag. kA Symm. % V kA kA Imag. kA Symm.
Contribution 1/2 Cycle 1.5 to 4 Cycle
Total 22.48923.40.9610.00BUS B -22.468 0.00 0.953 -22.426 23.5 22.446
BusC 21.00023.70.885100.00PEPCO CONTRIBUTION -20.981 100.00 0.885 -20.981 23.7 21.000
Point of Connection 1.48919.70.0752.15TL-1301 Pri -1.487 2.09 0.067 -1.445 21.5 1.446
BUS B 22.48923.40.9610.00BusC -22.468* 0.00 0.953 -22.426 23.5 22.446
BusC 0.0009999.00.0000.00BUS D 0.000* 0.00 0.000 0.000 9999.0 0.000
BusC 1.48919.70.0750.00Point of Connection -1.487* 0.00 0.067 -1.445 21.5 1.446
NACD Ratio = 0.94
# Indicates a fault current contribution from a three-winding transformer.
If the faulted bus is involved in loops formed by protection devices, the short-circuit contributions through these protective devices will not be reported.
Study Case: SC
16.2.0C Page: 31
SN:
Filename: NIST CHP FINAL
Project: NIST CHP ETAP
Contract:
Date: 04-25-2018
Revision: Base
Config.: Normal
= 100.00 % of nominal bus kV (13.800 kV)
= 100.00 % of base (13.800 kV)
Prefault voltage = 13.800 kV
3-phase fault at bus: BUS D
ID Magnitude/RealImaginaryRealFrom BusMagnitude/RealRealFrom BusID Imaginary
From Bus To Bus % V kA kA Imag. kA Symm. % V kA kA Imag. kA Symm.
Contribution 1/2 Cycle 1.5 to 4 Cycle
Total 22.48923.40.9610.00BUS D -22.468 0.00 0.953 -22.426 23.5 22.446
BusC 21.00023.70.885100.00PEPCO CONTRIBUTION -20.981 100.00 0.885 -20.981 23.7 21.000
Point of Connection 1.48919.70.0752.15TL-1301 Pri -1.487 2.09 0.067 -1.445 21.5 1.446
BusC 0.0009999.00.0000.00BUS B 0.000* 0.00 0.000 0.000 9999.0 0.000
BUS D 22.48923.40.9610.00BusC -22.468* 0.00 0.953 -22.426 23.5 22.446
BusC 1.48919.70.0750.00Point of Connection -1.487* 0.00 0.067 -1.445 21.5 1.446
NACD Ratio = 0.94
# Indicates a fault current contribution from a three-winding transformer.
* Indicates a fault current through a tie circuit breaker.
If the faulted bus is involved in loops formed by protection devices, the short-circuit contributions through these protective devices will not be reported.
NIST CHP ETAP SHORT-CIRCUIT ANALYSIS
Study Case: SC
16.2.0C Page: 32
SN:
Filename: NIST CHP FINAL
Project: NIST CHP ETAP
Contract:
Date: 04-25-2018
Revision: Base
Config.: Normal
= 100.00 % of nominal bus kV (13.800 kV)
= 100.00 % of base (13.800 kV)
Prefault voltage = 13.800 kV
3-phase fault at bus: BusC
ID Magnitude/RealImaginaryRealFrom BusMagnitude/RealRealFrom BusID Imaginary
From Bus To Bus % V kA kA Imag. kA Symm. % V kA kA Imag. kA Symm.
Contribution 1/2 Cycle 1.5 to 4 Cycle
Total 22.48923.40.9610.00BusC -22.468 0.00 0.953 -22.426 23.5 22.446
BusC 21.00023.70.885100.00PEPCO CONTRIBUTION -20.981 100.00 0.885 -20.981 23.7 21.000
Point of Connection 1.48919.70.0752.15TL-1301 Pri -1.487 2.09 0.067 -1.445 21.5 1.446
BusC 0.0009999.00.0000.00BUS B 0.000* 0.00 0.000 0.000 9999.0 0.000
BusC 0.0009999.00.0000.00BUS D 0.000* 0.00 0.000 0.000 9999.0 0.000
BusC 1.48919.70.0750.00Point of Connection -1.487* 0.00 0.067 -1.445 21.5 1.446
NACD Ratio = 0.94
# Indicates a fault current contribution from a three-winding transformer.
If the faulted bus is involved in loops formed by protection devices, the short-circuit contributions through these protective devices will not be reported.
Study Case: SC
16.2.0C Page: 33
SN:
Filename: NIST CHP FINAL
Project: NIST CHP ETAP
Contract:
Date: 04-25-2018
Revision: Base
Config.: Normal
= 100.00 % of nominal bus kV (4.160 kV)
= 100.00 % of base (4.160 kV)
Prefault voltage = 4.160 kV
3-phase fault at bus: CTG-1_BUS
ID Magnitude/RealImaginaryRealFrom BusMagnitude/RealRealFrom BusID Imaginary
From Bus To Bus % V kA kA Imag. kA Symm. % V kA kA Imag. kA Symm.
Contribution 1/2 Cycle 1.5 to 4 Cycle
Total 19.48415.51.2580.00CTG-1_BUS -19.443 0.00 1.210 -19.134 15.8 19.172
CTG-1_BUS 12.50111.21.1150.89SG-4001 -12.451 0.86 1.067 -12.142 11.4 12.189
CTG-1_BUS 6.99449.00.143100.00CTG-1 -6.992 100.00 0.143 -6.992 49.0 6.994
NACD Ratio = 0.64
# Indicates a fault current contribution from a three-winding transformer.
If the faulted bus is involved in loops formed by protection devices, the short-circuit contributions through these protective devices will not be reported.
Study Case: SC
16.2.0C Page: 34
SN:
Filename: NIST CHP FINAL
Project: NIST CHP ETAP
Contract:
Date: 04-25-2018
Revision: Base
Config.: Normal
= 100.00 % of nominal bus kV (0.480 kV)
= 100.00 % of base (0.480 kV)
Prefault voltage = 0.480 kV
3-phase fault at bus: EF-25_BUS
ID Magnitude/RealRealFrom BusID Imaginary
From Bus To Bus % V kA kA Imag. kA Symm.
Contribution 1/2 Cycle
Total 4.2010.43.9570.00EF-25_BUS -1.412
EF-25_BUS 4.1590.33.93588.563A_BUS -1.347
EF-25_BUS 0.0693.00.022100.00EF-25 -0.065
NACD Ratio = 1.00
# Indicates a fault current contribution from a three-winding transformer.
If the faulted bus is involved in loops formed by protection devices, the short-circuit contributions through these protective devices will not be reported.
Study Case: SC
16.2.0C Page: 35
SN:
Filename: NIST CHP FINAL
Project: NIST CHP ETAP
Contract:
Date: 04-25-2018
Revision: Base
Config.: Normal
= 100.00 % of nominal bus kV (0.480 kV)
= 100.00 % of base (0.480 kV)
Prefault voltage = 0.480 kV
3-phase fault at bus: EF-26_BUS
ID Magnitude/RealRealFrom BusID Imaginary
From Bus To Bus % V kA kA Imag. kA Symm.
Contribution 1/2 Cycle
Total 9.8610.97.4250.00EF-26_BUS -6.490
EF-26_BUS 9.8020.97.40360.883E_BUS -6.425
EF-26_BUS 0.0693.00.022100.00EF-26 -0.065
NACD Ratio = 1.00
# Indicates a fault current contribution from a three-winding transformer.
If the faulted bus is involved in loops formed by protection devices, the short-circuit contributions through these protective devices will not be reported.
Study Case: SC
16.2.0C Page: 36
SN:
Filename: NIST CHP FINAL
Project: NIST CHP ETAP
Contract:
Date: 04-25-2018
Revision: Base
Config.: Normal
= 100.00 % of nominal bus kV (4.160 kV)
= 100.00 % of base (4.160 kV)
Prefault voltage = 4.160 kV
3-phase fault at bus: FGC-1 Starter
ID Magnitude/RealImaginaryRealFrom BusMagnitude/RealRealFrom BusID Imaginary
From Bus To Bus % V kA kA Imag. kA Symm. % V kA kA Imag. kA Symm.
Contribution 1/2 Cycle 1.5 to 4 Cycle
Total 16.6623.94.1150.00FGC-1 Starter -16.146 0.00 4.046 -15.882 3.9 16.389
FGC-1 Starter 16.3563.94.09623.02SG-4001 -15.835 22.90 4.038 -15.758 3.9 16.267
FGC-1 Starter 0.31116.40.0190.05FGC-01_BUS -0.311 0.02 0.008 -0.124 16.5 0.124
NACD Ratio = 0.64
# Indicates a fault current contribution from a three-winding transformer.
* Indicates a fault current through a tie circuit breaker.
If the faulted bus is involved in loops formed by protection devices, the short-circuit contributions through these protective devices will not be reported.
NIST CHP ETAP SHORT-CIRCUIT ANALYSIS
Study Case: SC
16.2.0C Page: 37
SN:
Filename: NIST CHP FINAL
Project: NIST CHP ETAP
Contract:
Date: 04-25-2018
Revision: Base
Config.: Normal
= 100.00 % of nominal bus kV (4.160 kV)
= 100.00 % of base (4.160 kV)
Prefault voltage = 4.160 kV
3-phase fault at bus: FGC-01_BUS
ID Magnitude/RealImaginaryRealFrom BusMagnitude/RealRealFrom BusID Imaginary
From Bus To Bus % V kA kA Imag. kA Symm. % V kA kA Imag. kA Symm.
Contribution 1/2 Cycle 1.5 to 4 Cycle
Total 16.4023.74.3310.00FGC-01_BUS -15.820 0.00 4.261 -15.560 3.7 16.133
FGC-01_BUS 16.0973.64.3122.39FGC-1 Starter -15.509 2.38 4.254 -15.436 3.6 16.011
FGC-01_BUS 0.31116.50.019100.00FGC-01 -0.311 100.00 0.008 -0.124 16.5 0.124
NACD Ratio = 0.64
# Indicates a fault current contribution from a three-winding transformer.
If the faulted bus is involved in loops formed by protection devices, the short-circuit contributions through these protective devices will not be reported.
Study Case: SC
16.2.0C Page: 38
SN:
Filename: NIST CHP FINAL
Project: NIST CHP ETAP
Contract:
Date: 04-25-2018
Revision: Base
Config.: Normal
= 100.00 % of nominal bus kV (0.480 kV)
= 100.00 % of base (0.480 kV)
Prefault voltage = 0.480 kV
3-phase fault at bus: FGC-PP
ID Magnitude/RealRealFrom BusID Imaginary
From Bus To Bus % V kA kA Imag. kA Symm.
Contribution 1/2 Cycle
Total 5.0670.64.3330.00FGC-PP -2.628
FGC-PP 5.0010.64.30680.96MCC-7 -2.544
FGC-PP 0.0893.20.0261.00RC1-VFD -0.085
NACD Ratio = 1.00
# Indicates a fault current contribution from a three-winding transformer.
If the faulted bus is involved in loops formed by protection devices, the short-circuit contributions through these protective devices will not be reported.
Study Case: SC
16.2.0C Page: 39
SN:
Filename: NIST CHP FINAL
Project: NIST CHP ETAP
Contract:
Date: 04-25-2018
Revision: Base
Config.: Normal
= 100.00 % of nominal bus kV (0.480 kV)
= 100.00 % of base (0.480 kV)
Prefault voltage = 0.480 kV
3-phase fault at bus: H3103_BUS
ID Magnitude/RealRealFrom BusID Imaginary
From Bus To Bus % V kA kA Imag. kA Symm.
Contribution 1/2 Cycle
Total 1.9450.21.9190.00H3103_BUS -0.318
H3103_BUS 1.9450.21.91995.82MCC-7 -0.318
NACD Ratio = 1.00
# Indicates a fault current contribution from a three-winding transformer.
If the faulted bus is involved in loops formed by protection devices, the short-circuit contributions through these protective devices will not be reported.
Study Case: SC
16.2.0C Page: 40
SN:
Filename: NIST CHP FINAL
Project: NIST CHP ETAP
Contract:
Date: 04-25-2016
Revision: Base
Config.: Normal
= 100.00 % of nominal bus kV (0.480 kV)
= 100.00 % of base (0.480 kV)
Prefault voltage = 0.480 kV
3-phase fault at bus: M1300 VFD_BUS
ID Magnitude/RealRealFrom BusID Imaginary
From Bus To Bus % V kA kA Imag. kA Symm.
Contribution 1/2 Cycle
Total 15.3273.83.8870.00M1300 VFD_BUS -14.826
M1300 VFD_BUS 14.5543.73.8002.93MCC-7 -14.049
M1300 VFD_BUS 0.7828.90.0871.12M1330_BUS -0.777
M1300 VFD_BUS 0.000999.90.0000.00M1300-HTR_BUS 0.000
NACD Ratio = 1.00
# Indicates a fault current contribution from a three-winding transformer.
If the faulted bus is involved in loops formed by protection devices, the short-circuit contributions through these protective devices will not be reported.
Study Case: SC
16.2.0C Page: 41
SN:
Filename: NIST CHP FINAL
Project: NIST CHP ETAP
Contract:
Date: 04-25-2018
Revision: Base
Config.: Normal
= 100.00 % of nominal bus kV (0.480 kV)
= 100.00 % of base (0.480 kV)
Prefault voltage = 0.480 kV
3-phase fault at bus: M1300-HTR_BUS
ID Magnitude/RealRealFrom BusID Imaginary
From Bus To Bus % V kA kA Imag. kA Symm.
Contribution 1/2 Cycle
Total 0.9210.10.9180.00M1300-HTR_BUS -0.070
M1300-HTR_BUS 0.9210.10.91898.21M1300 VFD_BUS -0.070
NACD Ratio = 1.00
# Indicates a fault current contribution from a three-winding transformer.
If the faulted bus is involved in loops formed by protection devices, the short-circuit contributions through these protective devices will not be reported.
Study Case: SC
16.2.0C Page: 42
SN:
Filename: NIST CHP FINAL
Project: NIST CHP ETAP
Contract:
Date: 04-25-2018
Revision: Base
Config.: Normal
= 100.00 % of nominal bus kV (0.480 kV)
= 100.00 % of base (0.480 kV)
Prefault voltage = 0.480 kV
3-phase fault at bus: M1330_BUS
ID Magnitude/RealRealFrom BusID Imaginary
From Bus To Bus % V kA kA Imag. kA Symm.
Contribution 1/2 Cycle
Total 13.0442.84.3280.00M1330_BUS -12.305
M1330_BUS 12.2782.74.24617.65M1300 VFD_BUS -11.520
M1330_BUS 0.7899.50.082100.00M1300 -0.785
NACD Ratio = 1.00
# Indicates a fault current contribution from a three-winding transformer.
If the faulted bus is involved in loops formed by protection devices, the short-circuit contributions through these protective devices will not be reported.
Study Case: SC
16.2.0C Page: 43
SN:
Filename: NIST CHP FINAL
Project: NIST CHP ETAP
Contract:
Date: 04-25-2018
Revision: Base
Config.: Normal
= 100.00 % of nominal bus kV (0.480 kV)
= 100.00 % of base (0.480 kV)
Prefault voltage = 0.480 kV
3-phase fault at bus: M3150-HTR_BUS
ID Magnitude/RealRealFrom BusID Imaginary
From Bus To Bus % V kA kA Imag. kA Symm.
Contribution 1/2 Cycle
Total 0.8400.10.8370.00M3150-HTR_BUS -0.059
M3150-HTR_BUS 0.8400.10.83798.512O_BUS -0.059
NACD Ratio = 1.00
# Indicates a fault current contribution from a three-winding transformer.
If the faulted bus is involved in loops formed by protection devices, the short-circuit contributions through these protective devices will not be reported.
Study Case: SC
16.2.0C Page: 44
SN:
Filename: NIST CHP FINAL
Project: NIST CHP ETAP
Contract:
Date: 04-25-2018
Revision: Base
Config.: Normal
= 100.00 % of nominal bus kV (0.480 kV)
= 100.00 % of base (0.480 kV)
Prefault voltage = 0.480 kV
3-phase fault at bus: M3150_BUS
ID Magnitude/RealRealFrom BusID Imaginary
From Bus To Bus % V kA kA Imag. kA Symm.
Contribution 1/2 Cycle
Total 0.8480.10.8450.00M3150_BUS -0.069
M3150_BUS 0.8400.10.83798.512O_BUS -0.059
M3150_BUS 0.0131.30.008100.00M3150 -0.011
NACD Ratio = 1.00
# Indicates a fault current contribution from a three-winding transformer.
If the faulted bus is involved in loops formed by protection devices, the short-circuit contributions through these protective devices will not be reported.
Study Case: SC
16.2.0C Page: 45
SN:
Filename: NIST CHP FINAL
Project: NIST CHP ETAP
Contract:
Date: 04-25-2018
Revision: Base
Config.: Normal
= 100.00 % of nominal bus kV (0.480 kV)
= 100.00 % of base (0.480 kV)
Prefault voltage = 0.480 kV
3-phase fault at bus: M-3220_BUS
ID Magnitude/RealRealFrom BusID Imaginary
From Bus To Bus % V kA kA Imag. kA Symm.
Contribution 1/2 Cycle
Total 1.7440.21.7250.00M-3220_BUS -0.261
M-3220_BUS 1.7260.11.71096.541O_BUS -0.230
M-3220_BUS 0.0342.10.015100.00M-3220 -0.031
NACD Ratio = 1.00
# Indicates a fault current contribution from a three-winding transformer.
* Indicates a fault current through a tie circuit breaker.
If the faulted bus is involved in loops formed by protection devices, the short-circuit contributions through these protective devices will not be reported.
NIST CHP ETAP SHORT-CIRCUIT ANALYSIS
Study Case: SC
16.2.0C Page: 46
SN:
Filename: NIST CHP FINAL
Project: NIST CHP ETAP
Contract:
Date: 04-25-2018
Revision: Base
Config.: Normal
= 100.00 % of nominal bus kV (0.480 kV)
= 100.00 % of base (0.480 kV)
Prefault voltage = 0.480 kV
3-phase fault at bus: M-3320-HTR_BUS
ID Magnitude/RealRealFrom BusID Imaginary
From Bus To Bus % V kA kA Imag. kA Symm.
Contribution 1/2 Cycle
Total 1.1020.11.0980.00M-3320-HTR_BUS -0.095
M-3320-HTR_BUS 1.1020.11.09897.991O_BUS -0.095
NACD Ratio = 1.00
# Indicates a fault current contribution from a three-winding transformer.
If the faulted bus is involved in loops formed by protection devices, the short-circuit contributions through these protective devices will not be reported.
Study Case: SC
16.2.0C Page: 47
SN:
Filename: NIST CHP FINAL
Project: NIST CHP ETAP
Contract:
Date: 04-25-2018
Revision: Base
Config.: Normal
= 100.00 % of nominal bus kV (0.480 kV)
= 100.00 % of base (0.480 kV)
Prefault voltage = 0.480 kV
3-phase fault at bus: M6211-HTR_BUS
ID Magnitude/RealRealFrom BusID Imaginary
From Bus To Bus % V kA kA Imag. kA Symm.
Contribution 1/2 Cycle
Total 0.9220.10.9190.00M6211-HTR_BUS -0.069
M6211-…
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