SAJ SMART METER-3 User manual
SMART METER-3
User Manual
Chapter 1 - Introduction
1.1
Product Introduction
This user manual includes the installation and configuration
and other relevant information for the SMART METER-3.
The SMART METER-3 includes three phase Meter and three
current transformers (CTs). This set of devices can be
combined with solar inverters to implement the power limit
control function.
1.2
System Diagram
Grid
Solar Inverter
Load
DC
AC
~L1 NL2 L3
S E T SE C
1 4 7 10
13 1416 17 19 21 24 25
3 6 9 10
Meter
Chapter 2 - Installation Instructions
2.1
Pre-Installation Checks
2.1.1
Checking the packaging
Although the SMART METER-3 has passed rigorous tests and
is checked before it leaves the factory, it is not excluded that it
may be damaged during transport. Please check whether the
packaging has shown obvious signs of damage and, if this
occurs, please do not open the package and contact your
dealer as soon as possible.
2.1.2
Checking accessories
Accessory items and number of items included can be found
in the label attached to the packaging. Please check and
contact your dealer if there are any missing accessories
2.2
Instructions for installing the SMART METER-3
2.2.1
Connection twisted-pair cable with RS-485 connector
Installer has to autonomously choose a twisted-pair cable,
extract Meter from the box and get the RS-485 connector
included with inverter. Connect an extremity of cable to
terminals 1 and 2 of RS-485 connector, then combine with
inverter through dedicated port.
3
Connect the other extremity of cable to terminals 24 and 25 of
Meter on relative slots according to scheme below:
2.2.2
Meter power connection and fixing
Connect the three phases to Ua, Ub and Uc inputs and the
neutral to Un input arranged on Meter. There are locking
hooks on the back of the Meter, through which it is possible to
fix the device on suitable sized guides (DIN 35mm). It is
RS-485
connector PIN
Meter slot
1
B (-)
2
A (+)
3
Metal-shielded wire
1
2
advisable to install the Meter in the distribution board as the
appliance is neither waterproof nor dustproof.
2.2.3
CTs connection
Connect outputs of three current transformers to six inputs of
Meter (CT Current Input), matching terminals white I* and
blue I of CTs with IA* and IA, IB* and IB and IC* and IC inputs
as in the figure below.
Then, close and ensure the three CTs to respective phases
of power connection.
Check that the arrow printed on the CTs indicate the direction
of the load. It is advisable to install the CTs in the distribution
board as the appliance are neither waterproof nor dustproof.
Notes: dimensions in millimeters
2.2.4
Inverter Configuration
Note: 1. Power mode and current mode could be alternatively
selected;
2.When the setting is completed, the export limitation system
will begin to run.
Chapter 3 - Verifying informations
3.1 Meter Information
Information such as voltage, current, frequency, power, power
factor, baud- rate, communication address and active power
can be displayed in rotation on the display or manually
scrolling by pressing the “→” button on the Meter.
LCD Display
Operation Steps
Export Limitation Function
Export Limit
1. In the main
LCD interface,
press “ENT”
button, then press
“▶” key to enter
into “Setting”.
2. Press “▼” key
to select export
limitation, and then
press “ENT” button
to enter.
Password：201561
Power Mode
1. Turn on the
“Limit enable”.
2. Select the
“Power mode”.
3. Please set the
percentage limited
by the export
limitation power
according to
practical situation.
4. Click “OK”
when completing the
setting.
Current Mode
1.Turn on the “Limit
enable”.
2. Select the
“Current mode”.
3. Please set export
limitation current
value according to
practical situation.
4. Click “OK” when
completing the
setting.
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