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Measurement Methods
2CMC48001M0201
93
A43/A44
Revision: C
User Manual
Illustration
The following diagram shows a 3-element transformer connected meter with the
neutral disconnected, that is left floating:
3-element metering with 2 transformers
It is also possible to use a 3-element meter with only 2 current transformers.
This type connection is possible both with and without the neutral available or
the neutral left floating.
Note that if the current transformers are connected to protective earth it must be
connected in only one point. Both methods require a balanced system (voltages
and currents the same in all 3 phases). It shall also be mentioned that having a
floating neutral also can give additional errors in the measured voltages due to
impedance unlinearity and imbalance inside the meter.
Illustration
The following diagram shows a 3-element transformer connected meter with 2
current transformers:
1 2 3
4
5 6
7
8 9 11
L1
S1
S2
P1
P2
L2
L3
S1
S2
P1
P2
N
Summary of Contents for A43
Page 1: ...A43 A44 User Manual ...
Page 40: ...Meter Settings A43 A44 40 2CMC48001M0201 User Manual Revision C ...
Page 55: ...Technical Description 2CMC48001M0201 55 A43 A44 Revision C User Manual ...
Page 58: ...Technical Description A43 A44 58 2CMC48001M0201 User Manual Revision C ...
Page 61: ...Technical Description 2CMC48001M0201 61 A43 A44 Revision C User Manual ...
Page 75: ...Technical Description 2CMC48001M0201 75 A43 A44 Revision C User Manual ...
Page 84: ...Measurement Methods A43 A44 84 2CMC48001M0201 User Manual Revision C ...
Page 91: ...Measurement Methods 2CMC48001M0201 91 A43 A44 Revision C User Manual ...
Page 95: ...Measurement Methods 2CMC48001M0201 95 A43 A44 Revision C User Manual ...
Page 102: ...Communication with Modbus A43 A44 102 2CMC48001M0201 User Manual Revision C ...
Page 107: ...Communication with Modbus 2CMC48001M0201 107 A43 A44 Revision C User Manual ...
Page 131: ...Communication with Modbus 2CMC48001M0201 131 A43 A44 Revision C User Manual ...
Page 147: ...Communication with Modbus 2CMC48001M0201 147 A43 A44 Revision C User Manual ...
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Page 180: ...Communication with M Bus A43 A44 180 2CMC48001M0201 User Manual Revision C ...
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