Adding a new Transfer Switch

To add a new Transfer Switch:

1. On the Transfer Switch tab, click New.
2. Complete the following to define the transfer switch:
   • Name - Enter a unique name to identify the transfer switch.
   • Description - (Optional) Add information about the transfer switch.
   • Load Data - Select the check box to enable this property. Complete the following fields:
     • Source - Select the monitoring device that records the electrical data of the transfer switch.
     • Measurement - Select the electrical measurement you want to track for the transfer switch, for example Current Phase Average.
     • Rating - Enter the rating value for the measurement, such as 400.
     • Unit - Enter the unit of measurement, such as A.
   • Priority Level - Select a priority level for this transfer switch. The Required Transfer Time associated with the selected priority is displayed below the list box.

     NOTE: You can define priority levels in the Edit Priority Levels editor at the top of the Transfer Switches tab. See Editing Transfer Switch priority levels for more details.

   • Status Measurements - Configure the monitoring device and the measurements used to record the transfer switch states.
     • Source - Select the monitoring device that records the transfer switch states.
     • Normal - This state indicates that the transfer switch is in the Normal position and power is supplied to the load by the utility. Select the measurement that provides the Normal state input, and enter the Active Value for the measurement.
     • Test - This state indicates that the transfer switch is in Test mode. Select the measurement that provides the Test state input, and enter the Active Value for the measurement.
     • Emergency - This state indicates that the transfer switch is in the Emergency position and power is supplied to the load by the generator. Select the measurement that provides the Emergency state input, and enter the Active Value for the measurement.
     • Monitor for Power Outage - Select the check box to enable this property. Select the measurement that indicates a power outage occurred, and enter the Active Value for the measurement.

       For example, assume that the system has measurements called EPSS_Norm, EPSS_Test, EPSS_Emerg, and EPSS_Util. You assign these measurements to the Normal, Test, Emergency, and Power Outage states and enter 1 as the active value for each.

       When the ATS is in the Normal position, the active value for EPSS_Norm is 1, and Normal is the state for the ATS. When the ATS is set to the Test mode, the active value for EPSS_Test is 1, and Test is the state for the ATS. When the ATS is in the Emergency position, the active value for EPSS_Emerg is 1, and Emergency is the state for the ATS. If a power outage occurs, the active value for EPSS_Util is 1, and Power Outage is the state for the ATS.

       In the EPSS Test Report, the states for the ATS and the time when they occurred are included in the Events Summary section.

       NOTE: The Transfer Switch states are used to calculate the Transfer Time and Emergency Time shown in the Generator Test EPSS Report:
       Transfer Time = The time (in seconds) it takes to switch from Normal state to Emergency state. For testing, the switch is triggered by the test signal, for an actual power outage it is triggered by the power outage signal.
       Emergency Time = The duration (in hours, minutes, and seconds) the transfer switch receives power from the generators. This is the time the generator is in the Emergency state.

3. Click Apply to save the changes and keep the configuration tool open. Click OK to save the changes and close the configuration tool.
4. (Optional) Repeat these steps to define other transfer switches.

   TIP: Use Clone to define additional transfer switches with similar settings. See Cloning a Transfer Switch.