ABB A43 User Manual page 94

Measurement Methods
Illustration The following diagram shows a 3-element meter with a voltage transformer
connected and 2 current transformers and a floating neutral connection:
Summation The currents from several different transformers can be summed into one
single meter.
metering
Note –
meter or a 2-element meter
The following illustration shows summation metering with a 3-element trans-
Illustration
former connected meter:
A43/A44
User Manual
L1
L2
L3
The summation metering method could also be used with a single phase
1 2 3 4
S1 S2
P1 P2
94
5 6 7 8 9 11
S1 S2
P1 P2
2CMC48001M0201
Revision: C