Measurement Computing WavePort 312P rev.1.0 - Manual (Page 42)

4-8 Device Configuration PowerVista/312 User’s Manual
4.1.8 120/240V Service
System Configuration PT Connection: Wye
A 120/240V Service connection arrangement is found in residential and small commercial power supplies. As
noted for Single Phase connections, EasyPower Measure does not have a dedicated 120/240V Service
connection arrangement specified in the System Configuration. As for Single Phase, the Wye PT connection
selection is used to perform measurements on this type of system. Two phases of the instrument are needed
while, if not being used for other test points, all other channels should be shorted.
Figure 4-8 illustrates the
connection arrangement.
Figure 4-8. Connection Arrangement for 120/240V Service.
Safety ground and the V1 and V2 negative inputs should be connected to the nearest bonafied system ground
point.
4.2 System Configuration
The system configuration dialog contains all setup to define how the hardware is connected to the external
system.
Items in Critical Configuration:
• All Items
Figure 4-9. System Configuration Dialog.