Load Data Tab (Other Electrical Equipment Common Properties Dialog) - Intergraph Smart Electrical - Help - Hexagon

Intergraph Smart Electrical Help

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10

Provides information about the mechanical power and usage requirements of the load. You can find many of these quantities on the load nameplate. An asterisk beside a property name indicates required data.

Rated power

The nameplate power output of the load. You must enter a value with appropriate units of measure for the standard that you are using. The units of measure depend on the type of load. You can specify the default plant units of measure in the Data Dictionary Manager.

For harmonic filters and capacitors, the rated power units are VAR, kVAR, or mVAR.

Rated voltage

Allows you to select the voltage at which the load is designed to operate. This quantity ensures electrical compatibility between the electrical supply and the equipment. It usually appears on the load nameplate. You can define and customize the available rated voltages in the Data Dictionary Manager.

Demand factor

Allows you to enter a value between 0 and 1 to represent the ratio of the load power requirement at a specified operating point to the rated power. The demand factor influences the consumed electrical power for the load.

SHARED Tip The software can calculate the demand factor if you enter the required values for rated power and absorbed power. Enter the required values and then click in the Demand factor box to display the calculated value.

Absorbed power

Allows you to enter the minimum electrical power required to operate the static load. If you enter a value, it cannot be greater than the value of the rated power and must have appropriate units of measure for the standard that you are using: W, kW, MW, or hp. You can specify the default units of measure for your plant in the Data Dictionary Manager.

SHARED Tip The software can calculate the absorbed power if you enter the required values for the rated power and demand factor. Enter the required values and then click in the Absorbed power box to display the calculated value.

Supply

Allows you to select the type of supply: alternating current (AC) or direct current (DC).

Number of phases

Allows you to select the number of phases in the power supply to the load. You can select 1 or 3 phases. This property applies for an AC supply only.

Phase arrangement

Allows you to select the required value to determine which of the available phases are in use for the current load, for example 2 PH + N (two phases plus neutral). This property applies for an AC supply only.

Frequency (Hz)

Allows you to select the operating frequency of the load. This property applies for an AC supply only. You can define and customize the available frequencies in the Data Dictionary Manager.

Number of wires

Allows you to select the number of wires used to supply power to the load.

Coincidence factors

Allows you to enter values corresponding to the percentage utilization of the load for the selected operating mode. Also known as duty factors. Type a value between 0 and 1 for the required mode. A value of 0 corresponds to an unused load, while a value of 1 corresponds to continuous operation.

Operating mode

Allows you to select the operating mode that describes how the load is used in practice in the plant. The standard available operating modes are:

Continuous

Intermittent

Standby

Spare

The coincidence factor corresponding to the selected operating mode provides a quantitative measure of the load behavior in that mode.

Power factor and efficiency

Enter the values under conditions of 100% of the rated power and at the demand point. The software uses these values in the Load Summary Report.

Power factor

Allows you to enter the ratio of active power to apparent power at 100% of the rated power and at the demand point. The power factor can have a value between 0 and 1.

Power factor does not apply to harmonic filters and capacitors.

Efficiency

Allows you to enter the ratio of power output to power input at 100% of the rated power and at the demand point. The efficiency can have a value between 0 and 1.

Manage Operating Cases

Opens the Manage Operating Cases dialog where you can add, edit, or delete property values specific to various plant operating cases that exist for the current plant item.