Switch Data

This dialog box includes the following areas and tabs:

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

Figure 1: Switch 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 switches, the program automatically assigns the names SW-1, SW-2, SW-3, and so on.
On Bus	This is the ID name of the bus to which the equipment is connected. The base kV of the bus is indicated on the right.
Connection Type	Whether the switch is connected as a Feeder (such as to a cable, busway, or transformer) or as a Tie (between two buses).
Open/Closed	Normal state of the switch. If Open, the one-line displays "OPEN" next to the switch symbol. If Closed, the one-line symbol does not show the "OPEN" tag.
Phase	The phase of the item. Currently, this is for reference only.
Group Name/Type	If the switch is part of a functional group, the group name and type appears here. See Functional Groups.

Option	Description
Mfr	Provides a list of manufacturers available in the device library. If the desired manufacturer is not listed in the device library, you can add it to the library. If the desired manufacturer is missing from the list, select Other.
Type	Equipment types available from the selected manufacturer. If the desired type is not listed, you can add it to the library. If the desired manufacturer is missing from the list, select Other.
Style	Switch styles available from the manufacturer chosen in the Mfr field above in the type specified. After you choose a manufacturer and type, the styles available in the yellow column of the corresponding device library page are displayed here.
Standard	Displays the standard used for short circuit calculation based on the selected type of fuse.
Continuous Current	Continuous current of the switch. This value is for reference only and does not affect analysis.
Assumed Opening Time	The estimated time it takes to open the circuit.

Figure 2: Short Circuit tab of Switch Data Dialog Box (ANSI)

Figure 3: Short Circuit tab of Switch Data Dialog Box (IEC)

Option	Description
Momentary / C&L (kA)	Momentary or close & latch rating of the switch. The values available from the device library are typically the close and latch values for spring and mechanically operated switches, since this is the lowest rating. Some switches, however, have only momentary ratings.
Peak Withstand (kA)	The peak withstand current is equal to the rated short circuit making current.
Calculate	Fills in a computed value for based on the device library entry for Mfr, Type, Style, and the base kV. You can override this value by typing in a different number.

Figure 4: Harmonics Tab

Option	Description
Monitor IEEE 519 Point of Common Coupling	EasyPower can monitor whether or not the IEEE 519 guideline for harmonics is met at the point of common coupling. If selected, then the Harmonics Report indicates when this guideline is not being met.
kVA Demand	The kVA demand.
PCC Isc/Load	The ratio of short circuit current to load current at the point of common coupling.

Option

Description

Monitor IEEE 519 Point of Common Coupling

EasyPower can monitor whether or not the IEEE 519 guideline for harmonics is met at the point of common coupling.

If selected, then the Harmonics Report indicates when this guideline is not being met.

kVA Demand

The kVA demand.

PCC Isc/Load

The ratio of short circuit current to load current at the point of common coupling.

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

Database Technical Reference	Common Tabs
Media Gallery