Panel Data

This dialog box includes the following areas and tabs:

See Common Tabs for information on the Location, Comments, Hyperlinks, or Collected Data tabs.

Figure 1: Panel Data Dialog Box

Connection Information

Option Description
ID Name

Uniquely identifies the equipment item. The program automatically assigns a name, but you can change it, if needed. The name can be up to 16 characters long.

For panels, the program automatically assigns the names PNL-1, PNL-2, PNL-3, and so on.

Base kV

The base kV of the panel.

Service

The service for the panel. Select from 3 Phase - 3 Wire, 3 Phase - 4 Wire, 1 Phase - 2 Wire, or 1 Phase - 3 Wire.

See Panel Row Behaviors for more information on how the service selection affects the panel rows.

Note: To use the Single Phase Panel Schedule Template on the panel, select either of the 1 Phase options. See File-Specific Templates for more information.

Upstream Rating The minimum amp rating of equipment that is upstream from the panel (such as breakers, transformers, or cables). This information is for reference in certain specific configurations of EasyPower and is not generally visible.

Spreadsheet View and Configure

See Configuring the Spreadsheet View for information about these options.
Lock Auto-Sizing When this check box is selected, this item cannot be automatically sized using SmartDesign™ (the auto-design feature).
Tools Use to enter tool information about the panel. See Edit Tools for more information.

Specifications Tab

Option Description
Unit Choose either U.S., Metric, or CSA.

Bus Rating

These are all user-defined fields.

Mfr Use this text field to describe the panel manufacturer.
Type Use this text field to further describe the panel manufacturer model.
Material Select the material for the panel, from aluminum, copper, or other.
Main Bus Rating (A) The current rating of the main bus.
Panel SC Rating (kA) The rating of the bus used in calculating the short circuit duties for SmartDuty™.
Bus Data
Area

Area numbers are used to uniquely define different areas of the electrical system. These areas can then be used for creating specific text reports from analysis operations that represent subsets of the system. For example, typical paper plant areas may be the power house (Area 1), caustic plant (Area 2), pulp mill (Area 3), and paper machine (Area 4). Area numbers are positive integers between 1 and 999.

Zone

A zone number is simply a sub-area. This enables even more specific reporting. You may want to define the pulp mill as Area 3 and the digester electrical equipment as Zone 2. Specific reports can then be generated for this combination without including the entire pulp mill or the other digesters.

 
Mounting The mounting for the panel. Select from flush, surface, or free standing.
Enclosure / IP Code

The enclosure for the panel. If the panel units are set to metric, this represents the International Protection Code.

ANSI: Select from NEMA 1, NEMA 3R, NEMA 4, NEMA 7, NEMA 9, or NEMA 12. If the panel units are set to metric, you can manually enter the enclosure or code by typing it.

IEC: You can manually enter the enclosure or code by typing it.

Description
Description Use this field to describe the panel.
Device Code You can type letters or numbers to describe the device code for the equipment item. The information can be converted and printed as a QR code on arc flash labels.
Fed By Use this field to indicate the transformer or the power supply source feeding the panel.
Header Comment Use this field for any comment on the panel.
 
Last Updated The date and time the panel data was last updated is displayed here.

Incoming Tab

Figure 2: Incoming Tab in Panel Data

Option Description
Incoming Device Type

You can select the type of incoming protective device type for the panel. The choices available are:

  • Main Lug Only: No protective device is present.
  • Main Breaker: LV breaker protects the panel bus. You can select the breaker in Incoming Device Settings.
  • Main Fuse: Fuse protects the panel bus. You can select the fuse in Incoming Device Settings.
Incoming Branch You can select the incoming branch equipment such as cables, transformers or busways. All the branches connected to the panel in the one-line are displayed in the list.
Incoming Device Settings Opens the data dialog for the main fuse or main breaker that has been specified as the incoming device type. Refer to Low Voltage Breaker Data or Fused Switch Data for details.
Device Information Information on the selected main breaker or main fuse.

Description Tab

This is a spreadsheet listing similar to the Device Library. When you place a new panel on the one-line, the first time you open its database dialog and click on the Description tab, EasyPower displays the Panel Schedule Spreadsheet Creation Wizard which enables you to select the number of rows you want. Clear the check box at the bottom of the wizard dialog if you don't want it to appear with each new panel.

Figure 3: Panel Schedule Spreadsheet Creation Wizard Dialog Box

When you click on the Description tab, additional buttons become available on the toolbar. These enable you to perform actions related to the spreadsheet. See Additional MCC and Panel Spreadsheet Options for more information.

Figure 4: Description Tab of Panel Data Dialog Box

Option Description
Library The list contains all of the same schedules as the Device Library. To enter a listing other than those contained in the list, create a new page in the panel section of the Device Library.
Schedule This list enables you to specify in which Device Library Schedule your chosen Library Load spreadsheet is located. To enter a listing other than those contained in the list, create a new page in the panel section of the Device Library.
Panel Load Units Select the panel load units, from VA or Amps.
View These options enable you to choose which of the panels you want to view: detailed left, right or both. The choice Simplifiedshows the ABC buses in the middle with the loads on both sides of the spreadsheet.

Spreadsheet

Option Description
ECR Type This is a reference for a type of electrical change request. It is only used in very specific configurations of EasyPower and is otherwise unavailable.
Preassigned Indicates if a change request is pending for this item. It is only used in very specific configurations of EasyPower and is otherwise unavailable.
Library Load This list corresponds directly to the Library Load column in the Device Library. After you have made selections in the Library, Schedule and Library Load fields, all of the following data cells are automatically filled in as soon as you click on another cell. You may also double-click on the cell to enter something different than what is listed.
Status The column is a toggle "On/Off" to indicate if this particular item is currently connected to the panel. Turning any load as “off” is similar to deactivating them in the one-line.
Load Type

You can select from three types of load:

  • Load: Specify loads in kW and kVARs.
  • Motor: Specify motor HP or kW and X/R ratio.
  • Sub-Panel: Specify the ID Name of the connecting cable and the sub-panel.
Facility The facility (building) for the panel row. Facilities are set up on the menu beneath Tools > Options.
Location The location within the facility for the panel row. Locations are set up on the menu beneath Tools > Options.
Floor The floor of the facility where the panel row is located. Floors set up on the menu beneath Tools > Options.

The rest of the fields correspond directly to those in the Device Library. See EasyPower Device Library for more information.

For additional information on the spreadsheet, see the following topics:

Summary Tab

The summary tab sums all the connected loads and displays results for total connected, demand, code factor and design. There are two sections in this summary: Panel Load and Including Downstream Load.

Figure 5: Summary tab of Panel Data Dialog Box

Option Description

Calculate Downstream Load

 

Calculates the total load on the panel, taking into account the connected load, demand factors, and NEC code factors.

Override with User Values This check box enables you to enter your own data. You can enter measured data or assumed data in the available fields. If this check box is not enabled, then the program calculates all the downstream loads and displays the total. For this feature to work, it is necessary to have a source upstream to the panel. This feature is applicable only to radial distribution systems. Downstream branches with any power source are not accounted for.

Panel Load

This summarizes the loads fed directly from this panel. It does not include loads fed through downstream sub-panels. These are not user-definable fields. They are updated automatically when you make changes in the spreadsheet of the Description tab. The watts and vars shown in this table do not reflect the downstream load of the sub-panels.

Option Description

Connected W (A phase):

Total of the of (VAA * PF)

Connected VAR (A phase):

Total of the of (VA2A - W2A)1/2  

Connected W (B phase):

Total of the of (VAB * PF)

Connected VAR (B phase):

Total of the of (VA2B - W2B)1/2  

Connected W (C phase):

Total of the of (VAC * PF)

Connected VAR (C phase):

Total of the of (VA2C - W2C)1/2  

Demand W (A phase):

Total of the of (VAA * PF) * DF

Demand VAR (A phase):

Total of the of (VA2A - W2A)1/2   * DF

Demand W (B phase):

Total of the of (VAB * PF) * DF

Demand VAR (B phase):

Total of the of (VA2B - W2B)1/2   * DF

Demand W (C phase):

Total of the of (VAC * PF) * DF

Demand VAR (C phase):

Total of the of (VA2C - W2C)1/2   * DF

 

Option Description
Including Downstream Load Loads connected through downstream sub-panels and buses are summarized in this section.

Power Flow Tab

Figure 6: Power Flow Tab of Panel Data Dialog Box

Option Description
Load Model Enables you to select the panel kVA from the Specified data or from SCADA (Supervisory Control and Data Acquisition) data. SCADA data can be read in by clicking File > Import.
Panel Specifications
kVA

Select the method used to determine the kilovolt-ampere for power flow analysis. Choose between:

  • Connected: The kVA is determined by the load defined on the Description tab of the panel.
  • Demand: The kVA is determined by the demand factor. Demand factor is calculated as the maximum loading conditions divided by the total connected load. This is specified on the Description tab of the panel.
  • Code: The kVA is determined by the code factors. Code factors are derived from the factors set up in the database File Properties on the Code Factors tab which reference NFPA 70 (NEC) article 220.40. You can view or edit the codes on the Description tab of the panel.
  • Design: The kVA is determined by the design factor in combination with the code factors. Design factor is set up in Tools > Options on the Equipment tab. You can view or edit the design factor on the Description tab of the panel.
Load Type

Panels can be modeled for the power flow solution in several different ways.

  • Constant kVA: This is the most common model. It is conservative, and will result in slightly lower voltage values than would be measured on an actual system.
  • Constant Current: This model alone is generally not used for power flow simulation.
  • Constant Impedance: This model is for loads such as incandescent lighting, ranges, and resistance space heaters.
Scaling factor Provides an easy way of adjusting the total panel load used in determining power flows.

SCADA Model

SCADA data is derived from real time, or metered data, and converted to an ASCII format which can be read into EasyPower. SCADA data is read in as a 100% scaling factor load. The load value is multiplied by the user-defined scaling factor. This provides a way to adjust SCADA loads to form new cases.

Option Description
kW The kW value as read in from the SCADA ASCII file.
kVAR The kVAR value as read in from the SCADA ASCII file.
Load Type

SCADA data can be modeled in the power flow solution in several different ways. SCADA load type is set in the ASCII file, and can be changed by you.

  • Constant kVA: This is the most common model. It is conservative, and will result in slightly lower voltage values than would be measured on an actual system.
  • Constant Current: This model alone is generally not used for power flow simulation.
  • Constant Impedance: This model is for loads such as incandescent lighting, ranges, and resistance space heaters.
Scaling factor Provides an easy way of adjusting the total SCADA load used in determining power flows. By changing the scaling factor, the actual kW +j kVAR read in from the ASCII file remains static; however, the load used in the power flow is adjusted by this factor.

Harmonics Tab

Use the Harmonics tab to indicate whether this equipment item is introducing harmonics into your power system.

Figure 7: Harmonics Tab

Option Description
Load Type

The default is Linear, indicating the equipment does not produce harmonics. Choosing Harmonic makes the item an harmonic source and makes other fields in this tab available to edit.

Note: For an adjustable frequency drive (AFD), the Load Type is always Harmonic.
For motors, the Load Type is Harmonic if the With Adjustable Frequency Drive (AFD) check box is selected on the Specifications tab of the motor; otherwise, it is always Linear.

Fundamental Amps

Use to set the fundamental amps. The options are as follows:

  • Equipment Rating sets Fundm Amps to the equipment rating of the item described in the Specifications tab. 
  • User Specified activates the Fundm Amps field, enabling you to specify a value. 

To use fundamental current calculated by power flow, select Calculated from Power Flow in the Summation Fundamental Voltage area of the Harmonics Options > Control dialog box.

Harmonic Spreadsheet

Use the spreadsheet to enter the harmonic spectrum produced by this item. You can enter up to 30 different harmonics in each equipment item. In the spreadsheet, enter the Harmonic Number (such as 5 for the 5th harmonic), the Harmonic Current in percent of the Fundamental Amps, and the Current Angle. By indicating the current angle, you can simulate transformer phase shift effects on rectifiers so appropriate canceling can take place. The harmonic may be integer or non-integer.

Library Load

Common harmonic spectra may be entered from the device library. For instructions on how to enter your own spectra information, see Harmonics with Spectrum™. After selecting a particular device library spectrum from the Mfr and Type lists, click Import, and that spectrum is entered into the harmonic spreadsheet.

Resistance Factor

EasyPower offers two methods for calculating RH:

  • Resistance varying with a power of the harmonic (R-EXP):
  • RH = RFund * H R-EXP

  • Resistance varying with a percent eddy current factor (%ECF):
  • RH = RFund * (1+ECF*H2)/(1+ECF)

EasyPower defaults all skin effect correction to R-EXP and a value of 0.5.

Typical Resistance Correction Factors

  R-EXP %ECF

Transformer

0.5-1.0

1.0-3.0

Utility

0.0-0.8

    -

Generator

0.3-0.6

    -

Line/Cable

0.5

    -

Reactor

0.5-1.0

0.8-3.0

Motor

0.2-0.4

    -

Arc Flash Hazard Tab

EasyPower calculates arc flash risk assessment results using the options set on the Arc Flash Hazard tab. The results are calculated for automatic transfer switches, buses, tool points of connection, MCCs, and panels.

Figure 8: Arc Flash Hazard Tab

Option Description
AF For This Bus

You can specify how you would like arc flash results determined for this bus using AF for this Bus.

Calculated: When the bus is faulted, EasyPower the performs arc flash hazard analysis using the calculation method specified in Short Circuit Options. EasyPower uses other settings on this tab as part of the calculations.

    Excluded: Select to exclude the bus from arc flash reports. An example of when you might select this option is for a bus that is required to model the electrical parameters of the system but does not actually represent a piece of electrical equipment. Other applications include nodes and tap-offs (junctions), where energized work is not required.

    Forced To: When you select this option, you can enter the incident energy and arc flash boundary for this bus. The incident energy and arc flash boundary values are shown on the one-line and in reports and work permits. This can be used for instances where you need to apply a calculation that is outside the scope of the industry standard calculations.

AF Output For This Bus

You can specify whether to display results on the line side or the load side of the Main protective device of the bus equipment. If the arc flash hazards output for this bus needs to be different from the global option, use this field. The choices are:

  • <<Use Global Option>>: Use the option specified in Short Circuit Options.
  • Including Main: Always display the arc flash hazard results on the load side of the Main protective device for this bus equipment regardless of what options are selected in the Short Circuit Options.
  • Excluding Main: Always display the arc flash hazard results on the line side of the Main protective device for this bus equipment regardless of what options are selected in the Short Circuit Options.
  • Both (Incl & Excl Main): Always display the arc flash hazard results on both the line side and the load side of the Main protective device for this bus equipment regardless of what options are selected in the Short Circuit Options.
Trip Times for this Bus

You can select the method for determining trip times for this bus by choosing from the following:

  • Pre-defined Fixed Times: Obtains arc clearing time for the bus from the library default values. This is not the same as the trip times calculated form the TCC curves of the upstream trip device. The values stored in the library are simply predefined approximate trip times. This is a legacy method and is not recommended.
  • User-defined Times: With this option you can specify the protective device clearing time for each bus. The details of arcing time for the bus can be specified in the fields Device ID, Relay Function and Time (s). When this option is selected, a time must be specified.
  • TCC Times (Automatically Calculated): Arc flash incident energy are calculated based on time characteristic current curves specified in each protective device data dialog box. The trip clearing time of the equipment where the device is a relay controlled breaker is the sum of the breaker mechanism opening time (for example, 3, 5, or 8 cycle), the relay trip time, and any time entered into the Relay Data, System, and Aux Time data fields.
  • User-defined and TCC Times: Provides results for both user-defined times and TCC times as described above.
  • User-defined One-line Device: With this option, you can specify which device you want to use for the TCC time, and the program will obtain the trip time automatically. You can select a device type (relay fuse, or low voltage breaker) and device ID. If you select a relay, you also select the relay function.
Working Distances

You can specify the working distances shown on the one-line and in reports and work permits.

  • Default from Options: When selected, the program uses the workings distances from the Default Working Distances spreadsheet in the Arc Flash Hazard Options.
  • User Specified: Selecting this option enables you to enter the working distance for this item.

The units displayed are based on the units selected in Arc Flash Hazard Options on the System tab. For inches, the range is 1-1000. For meters, the range is 0.1 to 1000.

Electrode Gap

You can specify the electrode gap shown on the one-line and in reports and work permits.

  • Default from Library: When selected, the program uses the electrode gap from the device library.
  • User Specified: Selecting this option enables you to enter the electrode gap for this item. The range is between 0.1 and 25,000 mm.

Electrode Configuration

You can specify the electrode configuration shown on the one-line and in reports and work permits.

  • Default from Library: When selected, the program uses the electrode configuration from the device library.
  • User Specified: Selecting this option enables you to select the electrode configuration for this item. The options available are based on the orientation of the electrodes, whether they are inside an enclosure, and in one instance, whether they terminate into a barrier.
  • Electrodes in Enclosures:

    • VCB: Vertical electrodes inside an enclosure.
    • VCBB: Vertical electrodes terminating in an insulating barrier inside an enclosure.
    • HCB: Horizontal electrodes inside an enclosure.

    Electrodes in Open Air:

    • VOA: Vertical electrodes in open air.
    • HOA: Horizontal electrodes in open air.

You can select more than one configuration to represent the multiple types of conditions that can occur for the equipment. EasyPower evaluates each configuration and then provides values for the highest incident energy based on the existing electrode configurations. Annex C in the IEEE 1584-2018 standard describes examples where you might use more than one electrode configuration.

Tip: To change the electrode configuration for multiple items on the one-line, select the items in the Database Edit focus and then on the Home tab, click Change > AF Bus Electrode Configuration.

Electrode configurations are only applicable to the IEEE 1584-2018 standard. For more information, see Electrode Configuration.

Enclosure Size

You can specify the enclosure size shown on the one-line and in reports and work permits.

  • Default from Library: When selected, the program uses the enclosure size from the device library. The library provides typical values based on the equipment type and voltage.
  • User Specified: Selecting this option enables you to enter the enclosure size for the item. This enables you to get more accurate calculation results, assuming the correct dimensions are entered.
  • The units displayed are based on the units selected in Arc Flash Hazard Options on the System tab. For inches, the range is .01-1000. For millimeters, the range is 0.1 to 25,000.

Labels to Print

Enter the number of labels you want to print for arc flash hazard analysis. If you enter "0," no labels will print.

Comment

You can type a comment that appears on the arc flash label when it is printed. For example, you could type a location description for the equipment to assist with label placement.

Accessories Tab

Figure 9: Accessories Tab

Option Description
Accessories Description The accessories for distribution equipment types can be specified in the panel, MCC, and bus dialog boxes. You can add or delete the accessory items as needed per equipment. Only the selected items are displayed in the schedule outputs.
Meter Data
Note An accessory note of up to 1,024 characters.
Maximum Demand The maximum demand load at this equipment.
Power Factor The power factor for the equipment.
Reading Date The date the meter was read or the information was gathered.
kVA
Safety Factor Percentage above the kVA that will be multiplied to calculate the new safety factor load.
Load with Safety Factor Load amount after calculating the safety factor.
Added (New) Demand Load User-specified load amount to add to the equipment.
Total New Demand Load Total of the load with safety factor and the added demand load.
Total Amps Amps based on the total demand load.

Change Management Tab

Note: This information is used in certain specific configurations of EasyPower and is not generally visible.

See Buses and Panels in Change Management Help for details.

Other Tabs

See Common Tabs for information on the Location, Comments, Hyperlinks, or Collected Data tabs.

More Information

Database Technical Reference Common Tabs
Media Gallery Configuring the Spreadsheet View

Panel Spreadsheet Notes

Panel Row Behaviors

Electrode Configuration

 

     

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EasyPower Version 10.2

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Help was last updated on 3/22/2019