Measurement Computing WavePort 312P rev.1.0 - Manual (Page 41)

PowerVista/312 User’s Manual Device Configuration 4-7
4.1.6 Three Phase Open Delta System
System Configuration PT Connection: Open Delta
A three phase Open Delta connection has power calculations performed identically to the Delta connection. In
fact, the additional Open Delta PT Connection selection in the System Configuration is only for record keeping
purposes. All calculations are performed identical to the Three Phase Delta System.
Figure 4-6 illustrates the
connection arrangement.
Figure 4-6. Connection Arrangement for Open Delta System.
Safety ground and the V1, V2 and V3 negative inputs should be connected to the nearest bonafied system
ground point.
4.1.7 Single Phase
System Configuration PT Connection: Wye
EasyPower Measure does not have a dedicated Single Phase connection arrangement specified in the System
Configuration. However, Single Phase measurements can easily be accomplished via a Wye connected PT
selection, and only using one phase of the instrument. In addition, it is recommended that shorting jumpers
(supplied with the hardware) be used to short unused inputs so that a near zero measurement is captured for
those channels. As noted above under Differential Inputs, shorting the inputs will keep them from drifting and
supplying collected data that is later questioned.
Figure 4-7 illustrates the connection arrangement.
Figure 4-7. Connection Arrangement for Single Phase System.
Safety ground should be connected to the nearest bonafied system ground point.