Installation Manual

4-10 IM02601001E www.eaton.com
2. Service: 2.5 Element WYE, 4-Wire with No PTs, 3 CTs
Select: “ 2.5 EL WYE ” (2.5 Element Wye) from the
Meter’s Front Panel Display. (See Chapter 6.
)
This conguration is not recommended. In
this conguration the B phase voltage is not
measured to save the cost of a B Phase volt-
age transformer. A balanced 3 phase voltage
is assumed to estimate B phase voltage for
the purpose of 3 phase power and energy
estimation (does not comply with Blondel’s
theory). 2.5 element Wye conguration can-
not detect problems with B phase voltage.
The Phase AB and BC voltage values shown
on the Meter web page are estimates only,
and on the Power web page only the System
values will be shown. Phase A, B, and C
values will display as zero
Electrical Installation