![ABB A43 User Manual Download Page 295](http://html.mh-extra.com/html/abb/a43/a43_user-manual_4297295.webp)
Troubleshooting
2CMC48001M0201
295
A43/A44
Revision: C
User Manual
Information
Error
investigation
Information
Description
I 2012
Alarm 1 active
...
...
I 2037
Alarm 25 active
If any of the negative power warnings are active when not expected so or the
energy consumption is suspected to be wrong it is recommended to check the
voltage, current, power and power factor values (under the menu Instantaneous
Values) which can give hints of what can be wrong in the installation. To know
what are reasonable values for power and power factors it is good to have
knowledge of the load to have an idea of what values to expect.
Especially with transformer connected meters there are a rather big risk with
installation errors. Current transformers can for example be connected with wrong
polarity or the phase connections can be mixed on the primary and/or the secondary
side. If the current and power values are low also check that the CT ratio is
correctly set and that the secondary terminals are not short circuited (which they
can be at installation to avoid high secondary voltages before or during installation
of the meter). The voltage phase connections can also be mixed.
Normal values for the total power factor and the phase power factors in 3-
element metering are values between 0.5 and 1.
Note that in 2-element-metering the power and the power factors in the two
elements can be significantly different if the load have a reactive component
(for example an inductive component like a motor). If the power factor for a
symmetrical load is less than 0.5 the power in one element can even be
negative. The total power should however be positive if the load consumes
energy and the total power factor should be reasonable.
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 ...
Page 154: ...Communication with Modbus A43 A44 154 2CMC48001M0201 User Manual Revision C ...
Page 157: ...Communication with Modbus 2CMC48001M0201 157 A43 A44 Revision C User Manual ...
Page 161: ...Communication with Modbus 2CMC48001M0201 161 A43 A44 Revision C User Manual ...
Page 166: ...Communication with Modbus A43 A44 166 2CMC48001M0201 User Manual Revision C ...
Page 180: ...Communication with M Bus A43 A44 180 2CMC48001M0201 User Manual Revision C ...
Page 182: ...Communication with M Bus A43 A44 182 2CMC48001M0201 User Manual Revision C ...
Page 188: ...Communication with M Bus A43 A44 188 2CMC48001M0201 User Manual Revision C ...
Page 195: ...Communication with M Bus 2CMC48001M0201 195 A43 A44 Revision C User Manual ...
Page 254: ...Communication with M Bus A43 A44 254 2CMC48001M0201 User Manual Revision C ...
Page 257: ...Communication with M Bus 2CMC48001M0201 257 A43 A44 Revision C User Manual ...