SKM Power*Tools for Windows, Version 8.0.2.5
December 6, 2017
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IMPORTANT UPGRADE INSTALLATION NOTES:
Please check your current version and revision prior to installing updates.  
You can determine the Version and Revision from the "Help menu > About PTW".
The first two digits represent the Version and the last two digits represent the Revision.  
For example, Version 8.0.1.5 indicates Version 8.0 and Revision 1.5.  
All of the Revisions within the same Version are forward and backward compatible with other Revisions.  
When you are upgrading from one Version to another, the formats of the Project Database and the PTW Library are modified and aren't backward compatible. When you 
open a Project in a new Version, the project and library files are converted to the new format automatically; once this occurs, neither the Project nor the 
Libraries can be opened by an older Version of PTW. Therefore, we recommend that you make backup copies of your projects using the Project>Backup function 
prior to installing any new PTW Version.  The project backup function will automatically copy your libraries, Datablock formats and query files used in the project.

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WHAT'S NEW IN VERSION 8.0.2.5 December 6, 2017):
1. New Auto Design study module. 
Enhance your design work!  Automatically sizes Cables, Transformers, Buses, and Protective Devices to achieve proper size and ratings that meets criteria limits set by the Equipment Evaluation study.  This software is best suited for new system designs or to resolve undersized and/or overdutied equipment for existing systems.  Refer to skm.com for full details.
2. New NFPA 70E 2018 and NESC 2017 standards compliance in the Arc Flash Evaluation study module.
3. New multiple duct bank modeling capability in the Cable Ampacity study module.
4. Apply IEC 287 standard for Cable Ampacity study module.  Previous calculation method used simpler Neher McGrath equations.  New IEC 287 standard is more accurate and calculated cable ampacity results may be higher compared to the old method.
5. Display the total calculated NM Ampacity as well as the NM Ampacity for each conductor.
6. New LTC option for 3-winding transformers.
7. New Solar PV and Wind Generators Component Editor sub-view "Converter Contribution".  Available when the project standard is set as IEC.  Applicable for the IEC909 special calculation requirements for supply sources via inverters (converters).
8. Added < (less than) symbol when applying the Arc Flash exception for systems fed by transformer < 125kVA.  Results greater than 1.2 cal/cm2 will be shown as “< 1.2 cal/cm2”.  Exact incident energy values will be shown when the calculated value is less than 1.2 cal/cm2.
9. Other minor fixes.
10. IEE Wiring updated.  Refer to "Readme V8.0 Lib Changes.pdf" for more information.
11. Updated the protective device library.  Refer to "Readme V8.0 Lib Changes.pdf" for more information.

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WHAT'S NEW IN VERSION 8.0.2.4 September 6, 2017):
1. Improved Cable Ampacity module when multiple cables are in the same duct for above ground installations.
2. Improved Project Merge function to include Cable Ampacity studies.
3. Improved DC Short Circuit study output messages when the study does not complete successfully. 
4. Improved IEE Wiring library and user interface.
5. Resolved Arc Flash current limiting fuse issue (@50Hz) and work permit printing issues.
6. Resolved IEC909 meshed network issue for special configurations.
7. Improved Arc Flash Line Side and Load Side Crystal Reports.
8. Added new Crystal Reports - Recloser 2.
9. Improved Arc Flash standard and custom labels for the NESC standard.
10. Improved Arc Flash reporting for worst case scenarios for OVERDUTY equipment.
11. Other minor fixes.
12. Updated the protective device library.  Refer to "Readme V8.0 Lib Changes.pdf" for more information.

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WHAT'S NEW IN VERSION 8.0.2.3 (July 12, 2017):
1. Resolved issue when recalculating arc flash trip time after synchronous machine decay.
2. Added a new Initial Mechanical Power control in the I*SIM engine for mechanical power output.
3. Updated the protective device library.  Refer to "Readme V8.0 Lib Changes.pdf" for more information.

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WHAT'S NEW IN VERSION 8.0.2.2 (June 23, 2017):
1. Resolved Equipment Evaluation and Auto Coordination issue if a VAR Compensator component exists in the project.
2. Resolved Motor Controller and VFD symbol issue when creating a new component.
3. Updated TCC and PTW.Lib for library devices with STPU/STD “OFF” settings.
4. Other minor fixes.
5. Updated the protective device library.  Refer to "Readme V8.0 Lib Changes.pdf" for more information.

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WHAT'S NEW IN VERSION 8.0.2.1 (June 14, 2017):
1. Resolved Arc Flash Work Permits export issue when multiple buses are selected.
2. Resolved relay trip time issue when the instantaneous segment overlaps with pick up delay settings in Arc Flash.

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WHAT'S NEW IN VERSION 8.0.2.0 (June 2, 2017):
1. Resolved Auto Coordination & Evaluation activation issue for old HASP keys.  Old HASP keys with this module will need to be reactivated by clicking on 
"Update from SKM Server" from AlaUser.exe or AlaUser_Network.exe
2. Provide project bus information when attempting to open a project that exceeds license limit.
3. Updated the protective device library.  Refer to "Readme V8.0 Lib Changes.pdf" for more information.

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WHAT'S NEW IN VERSION 8.0.1.9 (April 25, 2017):
1. Updated USB license key drivers.
2. Improved Arc Flash operation for upstream miscoordination of systems fed by 3-winding transformers. 
3. Improved harmonic study convergence of systems using voltage harmonic sources.
4. Improved harmonic distortion of VFD load side and Delta-Delta transformers.
5. Improved Arc Flash operation of zone selective interlocking (ZSI) consisting of multiple branches.
6. Propagate Base changes to Scenarios when using Templates with “Promote All Changes to Scenarios”.
7. Updated the protective device library.  Refer to "Readme V8.0 Lib Changes.pdf" for more information.

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WHAT'S NEW IN VERSION 8.0.1.8 (April 4, 2017):
1. Added Auto-Coordination feature in the Coordination Evaluation study module.
2. Enhanced software licensing security.
3. Improved Arc Flash operation for upstream miscoordination of complex loops. 
4. Added menu item to bring up the Library Notes in Component Editor interface.  Applicable for all component types with library notes.
5. Added OFF setting for library segments.  When OFF setting is used for a segment, this segment will be disabled and reported.
6. Fixed minor bugs.
7. Added new Arc Flash sample labels.
8. Fixed conductor temperature calculations (phases B & C) for certain duct bank configurations in the Cable Ampacity study.
9. Adjusted tolerance checking on cable data used for the Cable Ampacity module.
10. Fixed Single Phase Panel Connected Load reporting.
11. Fixed IEC 909 SLG, LL, and LLG calculations for certain configurations.
12. Updated the protective device library.  Refer to "Readme V8.0 Lib Changes.pdf" for more information.

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WHAT'S NEW IN VERSION 8.0.1.7 (January 12, 2017):
1. Updated license key tools.
2. Improved Arc Flash operation for unbalanced/single-phase fault method.
3. Added Curve Multiplier feature for HV/MV breakers w/ integral Trip Unit.
4. Improved unbalanced load flow operation associated with load schedules.
5. Improved Equipment Evaluation study reporting.
6. Fed From field of load schedules will automatically show the upstream bus by default.
7. Updated the protective device library.  Refer to "Readme V8.0 Lib Changes.pdf" for more information.

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WHAT'S NEW IN VERSION 8.0.1.6 (December 13, 2016):
1. Fixed refreshing issues of motor relays.
2. Updated the protective device library.  Refer to "Readme V8.0 Lib Changes.pdf" for more information.

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WHAT'S NEW IN VERSION 8.0.1.5 (December 2, 2016):
List of Enhancements and Changes in Power*Tools for Windows Version 8.0
1.	New study module – Underground & Aboveground Cable Ampacity/Ductbank calculations based on Neher-Mcgrath and IEC 60287.  Calculates cable ampacity ratings 
	and operating temperatures for user definable cable installations.  See Reference manual for more details.
	New Ampacity Calculation and Physical subviews in the Component Editor.  These contain the data utilized for the Cable Ampacity Program.  The data is either 
	linked to the library or user defined.
2.	New Module – Coordination Evaluation. Evaluates the system components and protective devices to address whether it follows the basic coordination and 
	protection rules per National Electric Code (NEC) and industry recommended practices.
	Plot all equipment curves with a single click to quickly evaluate coordination.
	Selected mode to show individual equipment paths.
3.	New study module – Intergraph SmartPlant Electrical Data Exchange.  Interface to provide bidirectional data exchange between Power*Tools and SmartPlant 
	Electrical software.  Use Power*Tools for the design and analysis.  Use SmartPlant Electrical for operation, maintenance, and construction.  Both software 
	packages work complimentary to each other by supporting each other’s strengths.  The block diagram shown below illustrates the data flow process.  See 
	Reference manual for more details.
4.	Added new short circuit methods for Arc Flash Evaluation.  IEC 60909 and Unbalanced/Single Phase fault are now available for use within Arc Flash Evaluation 
	(provided that these fault studies are licensed).
	IEC 909 short circuit results carried over to Arc Flash.
	Unbalanced/Single Phase short circuit results carried over to Arc Flash.
5.	New Load Flow Calculation Method for Islanding Micro Grids (projects without a swing bus).
	Power flow calculation is normally based on a fixed system frequency and at least one swing bus must be defined to represent a large power source for balancing 
	the power demand and maintaining the system frequency.  New distributed generation resources (DGR) like wind and solar energies are being added into the power grid.  
	In an island system due to local demand or failure of the grid, the DGR are often limited and there is no single DGR that can balance the demand.  In other words, 
	there is no swing bus and the system frequency will decline in such island micro grid systems.  Also large-scale wind and solar power integration may cause significant 
	impact on power system frequency, it is therefore necessary to take frequency regulation issues into account in power system steady-state operation analysis.
	The feature of “power flow considering frequency change” is designed for handling such situations.  The active and reactive power of generators and loads are presented 
	with their static power–frequency characteristics.  All the generators with frequency regulation capability participate in generation-load power regulation.  The power 
	flow calculation results can reveal the impact to the system frequency from operational mode changes and load variation, and present the output adjustment of the generators.
	a.	In load flow setup, check the option “Consider the system Freq Change”.
	b.	In Component Editor for Generators and Loads, enter the freq. adjustment factors.  Need to be set to non-zero values for at least one generator.
		•	KGp:  equivalent regulation coefficient of active power of generator.  PGi=Pgi0 – Kgpi*(f-1.0).  Where f is the current island freq., f0 is the base freq.  PGi , Pgi0, f are in pu.
		•	KGq:  equivalent regulation coefficient of reactive power of generator.  QGi=Qgi0 – Kgqi*(Vt-1.0).  Where Vt is the generator terminal voltage.  QGi , Qgi0, and Vt are in pu.
		•	KLp:  equivalent regulation coefficient of active power of load.  PLi=Pli0 – Klpi*(f-1.0).  Where f is the current island freq., f0 is the base freq., PLi , Pli0, and f are in pu.
		•	KLq:  equivalent regulation coefficient of reactive power of load.  QLi=Qli0 – Klqi*(f-1.0).  Where f is the current island freq., f0 is the base freq.,  QLi , Qli0, and f are in pu.
		•	New Datablock attributes: Bus freq. for each island.  All buses in the same island have the same frequency.  The generator and load P and Q are modified values, which is the sum of 
			initial PQ and freq. related changes.
		•	kW - enter the real power of the Solar PV Generator in this field.  This real power value is held constant at the machine's connected bus in the steady state load flow calculations.  
			Note:  If the "Link with SPV Config/Library" checkbox is checked, the software will calculate this value based on the rated size and power factor; and this field will be grayed out.
		•	kVar - enter the reactive power of the Solar PV Generator in this field.  This reactive power value is held constant at the machine's connected bus in the steady state load flow 
			calculations.  Note:  If the "Link with SPV Config/Library" checkbox is checked, the software will calculate this value based on the rated size and power factor; and this field will be grayed out.
6.	New Arc Flash Custom Label Designer Fields:
	• Arc Flash Standard
	• Schedule Fed From
	• Notes (User2)
	• Notes (User3)
	• Notes (User4)
	• Worst Case Incident Energy
	• Worst Case Incident Energy Range
	• Worst Case Flash Boundary
	• Worst Case Flash Boundary (in)
	• Worst Case Working Distance
	• Worst Case Working Distance (in)
	• Worst Case PPE Level
	• Worst Case PPE Description
	• Worst Case Arc Duration
	• Worst Case Scenario Name
	New Arc Flash label fields to show Worst Case results.  Also includes ability to show both Worst Case and Current Scenario results on the same label.
7.	Expanded the “Device Fail to Operate” option which applies to all Mains or as specified in the devices.  This is commonly used to simulate the operating failure 
	of the main device.  If this option is checked, the software will run Arc Flash based on the assumption that the Device connected to the bus did not operate.  The software 
	will then automatically use the upstream devices for the arc flash calculation instead.
8.	Added oneline component Arc Flash coloring based on the Arc Flash spreadsheet.  This includes worst case results from multiple scenarios.
9.	Added new DC solar Photovoltaic component.
10.	Added new fields for modeling parallel DC cables.
11.	New Zone Selective Interlocking modeling.  With ZSI, a short circuit will be isolated and cleared by the nearest upstream breaker with no intentional time delay.  
	Without ZSI, an intentional delay is used to clear the fault.  ZSI is particular useful in reducing Arc Flash incident energy as shown.  With clearing time reduced from 
	0.32 seconds to 0.08 seconds, incident energy reduced from 2.79 cal/cm2 to 0.72 cal/cm2.
12.	New option for current limiting fuse to use the let-through curve to determine if ½ or ¼ cycle should be used as the clearing time in Arc Flash Evaluation.  
	Peak Let-through curve data points are stored in the Fuse library.
	Line from A to B is where the fuse operates as a current limiting fuse.
	Iarc is the arcing current flowing through the fuse.
	If IA = Iarc = 2 x IA, then the fuse clearing time is set to ½ cycle in Arc Flash Evaluation.
	If Iarc > 2 x IA, then the fuse clearing time is set to ¼ cycle in Arc Flash Evaluation.
13.	Added “Schedule Fed From” custom Arc Flash label field.  If there is a connected Schedule at the bus, the “Fed From” specified in the Schedule can now be reported.  
	This aids in locating the panel so it can be shut off and work performed.
14.	New “Report Additional User Notes” for DC and NESC Arc Flash methods.
15.	Added 3 additional User Notes columns in Arc Flash Evaluation.
16.	DC Arc Flash Multiplier Table and Solar Farm Temperature Correction.  Based on IEEE paper DC Arc Flash Calculations for Solar Farms.
17.	Added cable resistance temperature adjustment field for individual cables in the Component Editor.  Enhanced study options for SC Comprehensive, Load Flow, ANSI, 
	IEC 60909, IEC 61363, and UBSC to allow for this adjustment.
18.	Added infinite bus option for utility component.
19.	Added automatic copying of the OverLoad Factor and FLA from an induction motor to a connected motor over load device.
20.	Added more Project Titles (up to 10 total).
21.	Add additional Crystal Report templates to accomadate 30 characters component names.
22.	Added auto renaming of associated onelines when a TCC drawing is renamed.  Applies when the associated oneline is named the same as the TCC drawing.
23.	In Equipment Evaluation, if a component is missing evaluation information such as the device SC ratings, it will be reported as Unknown.
24.	HI_WAVE – added “Generation Equipment” Component Editor checkbox for Transmission Line component types based on IEEE 519-2014.
25.	HI_WAVE – Calculate Total Demand Distortion (TDD).
26.	HI_WAVE – Calculate Harmonic Loss Factor (I_FHL).
27.	Added new field for Series Rating Test X/R.  This field is used for Low Voltage (<= 1kV) buses and protective devices and is considered in Equipment Evaluation 
	when the entered Series Rating value is higher than the Interrupting Rating of the equipment from the Library.
28.	New protective device library enhancements. 
	a.	Cable library model MCODE field now stores 15 characters.
	b.	New library category Underground Cable Raceway.  (Used for the Cable Ampacity module)
	c.	Updated the Standard Cable to physical characteristics of a cable.

29.	New Datablocks added:
	• AFWC_wcBusLineLoad_Boundary
	• AFWC_wcBusLineLoad_IncidentEnergy
	• AFWC_wcBusLineLoad_PPE Desc
	• AFWC_wcBusLineLoad_PPE Level
	• AFWC_ArcDuration
	• AFWC_Notes (N*)
	• AF_wcBusLineLoad_IncidentEnergy
	• AF_wcBusLineLoad_PPE Desc
	• AF_wcBusLineLoad_PPE Level
	• AF_wcBusLineLoad_Boundary
	• AF_wcBusLineLoad_IncidentEnergy
	• AF_wcBusLineLoad_PPE Desc
	• AF_wcBusLineLoad_PPE Level
	• AF_ArcDuration
	• AF_NESC_3PhaseMultiplier
	• AF_NESC_Altitudes
	• AF_NESC_LLorLG
	• AF_NESC_TypeOfWork
	• AF_Notes2 (User)
	• AF_Notes3 (User)
	• AF_Notes4 (User)
	• AF_BreakerTime_LineLoadSide (for Protective Devices)
	• AF_BusExclude (for Protective Devices)
	• AF_FailedToOperate (for Protective Devices)
	• AF_IncludeInLineSide (for Protective Devices)
	• AF_ProtDev (for Protective Devices)
	• AF_TripTime_LineLoadSide (for Protective Devices)
	• AFWC_BreakerTime_LineLoadSide (for Protective Devices)
	• AFWC_TripTime_LineLoadSide (for Protective Devices)
	• FunctionName (for Protective Devices)
	• FunctionNames (All) (for Protective Devices)
	• CT Ratios (All) (for Protective Devices)
	• DE_Notes (Equipment Evaluation)
	• OnelineNames 
	• CoorEval_Notes (Coordination Evaluation)
	• CoorEval_Status (Coordination Evaluation)
	• #/Conductors (Cable Ampacity)
	• Ampacity (NM) (Cable Ampacity)
	• ArmorLayLengthFactor (Cable Ampacity)
	• ArmorThickness (Cable Ampacity)
	• ArmorType (Cable Ampacity)
	• Bedding Rho (Cable Ampacity)
	• BeddingThickness (Cable Ampacity)
	• CableInstallationType (Cable Ampacity)
	• CableOD (Cable Ampacity)
	• CondConstructions (Cable Ampacity)
	• ConductorKp (Cable Ampacity)	
	• ConductorKs (Cable Ampacity)
	• ConductorOD (Cable Ampacity)
	• DielectricLosses (Cable Ampacity)
	• Insulation Rho (Cable Ampacity)
	• InsulationThickness (Cable Ampacity)
	• Jacket Rho (Cable Ampacity)
	• JacketThickness (Cable Ampacity)
	• JacketType (Cable Ampacity)
	• NM Temperature (Cable Ampacity)
	• Rdc (Cable Ampacity)
	• RdcOption (Cable Ampacity)
	• ScreenThickness (Cable Ampacity)
	• SheathGroundingOption (Cable Ampacity)
	• SheathLayLengthFactor (Cable Ampacity)
	• SheathThickness (Cable Ampacity)
	• SheathType (Cable Ampacity)
	• TempAdj SC (for Cables)
	• Temperature Ambient (for Cables)
	• Temperature Continuous (for Cables)
	• Temperature Damage (for Cables)
	• Temperature LF (for Cables)
	• Temperature ResistanceBase (for Cables)
	• Temperature SC (for Cables)

30.	New additions to the library.