
Installation
2CMC48001M0201
19
A43/A44
Revision: C
User Manual
2.3 Installing the Meter
Warning
–
Electrical equipment should only be installed, accessed, serviced
and
maintained by qualified electrical personnel.
Working with high voltage is potentially lethal. Persons subjected to high voltage
may suffer cardiac arrest, burn injuries, or other severe injuries. To avoid such
injuries, make sure to disconnect the power supply before you start the installation.
Warning
–
For safety reasons it is recommended that the equipment is installed in a
way that makes it impossible to reach or touch the terminal blocks by accident.
The best way to make a safe installation is to install the unit in an enclosure. Further,
access to the equipment should be limited through use of lock and key, controlled by
qualified electrical personnel.
Warning
–
The meters must always be protected by fuses on the incoming side.
In order to allow for maintenance of transformer rated meters, it is recommended that
there should be a short circuiting device installed near the meter. Alternatively a CT with
short circuiting terminals is used to short circuiting the secondary current during
maintenance. The reason for short circuit the secondary current during maintenance is
that a very high voltage will be induced across the terminals if current is flowing through
the CT primary and any secondary terminal is disconnected. This high voltage can be
potentially lethal and can damage the CT or other equipment.
Cable type
Cable type connected to the voltage/current terminals shall be solid or stranded copper
cable. When using stranded cable end ferrules can be used.
Install the meter
Follow the steps in the table below to install and verify the installation of the
meter:
Step
Action
1
Switch off the mains power.
2
Place the meter on the DIN-rail and make sure it snaps onto it.
3
Strip the cable insulation to the length that is indicated on the meter.
4
Connect the cables according to the wiring diagram that is printed on the meter
and tighten the screws (3.0 Nm for direct connected meters and 1.5 Nm for
transformer connected meters).
5
Install the circuit protection. See
below for the correct fuse.
6
If inputs/outputs are used, connect the cables according to the wiring diagram
that is printed on the meter and tighten the screws (0.25 Nm). Then connect to
an external power supply (max 240V).
7
If communication is used, connect the cables according to the wiring diagram
that is printed on the meter and tighten the screws (0.25 Nm).
Verify the installation
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 ...
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Page 180: ...Communication with M Bus A43 A44 180 2CMC48001M0201 User Manual Revision C ...
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