Elspec G3500 BlackBox, User And Installation Manual

Page: 208 / 358

208
Non-Measured Currents
One of the three-phase current channels could optionally be calculated from the I1+I2+I3=0. The
Non-measured Current section helps to configure calculated current channels. There are two
calculation options & they differ for:

WYE Network – Refer to
Topology Configuration

DELTA & Single Split Phase Network – Refer to
Topology Configuration
CONFIGURING CALCULATED CURRENT CHANNELS FOR WYE NETWORKS:

Ensure the Power Configuration coincides with your Network

In the Non-Measured Currents section, select the applicable phase to be calculated:
Calculation is based on Kirchhoff’s laws - everything that comes in must go out, in order for the
calculation of one of the current line to be based on the other measured lines instead of measuring
it. For example when L
x
is Absent it is being calculated using the other lines instead of measuring
it. Or the neutral current I
N
could be optionally calculated from the sum of three-phase currents, or
alternatively, measured by the I
4
current channel.
CONFIGURING CALCULATED CURRENT CHANNELS FOR DELTA AND SINGLE
SPLIT PHASE NETWORKS:

Ensure the Power Configuration coincides with your Network

In the Non-Measured Current section, select the applicable phase to be missed:
One of the three-phase current channels could optionally be calculated from the I
1
+ I
2
+ I
3
=0
SEE ALSO:

About the Current Window

Current Transformer

Current Polarity
Communication - Configuration