3 Installation : 3.3 Electrical installation in the Electrical power distribution board

  
3.3 Electrical installation in the Electrical power distribution board
The following operations are performed in the distribution board:
Fig. 4: Installation in the electrical power distribution board

Step1: Installing and connecting the digitalSTROM filter
Install the digitalSTROM Filters according to the installation instructions on the top hat rail and connect electrically with the mains supply.
Position the digitalSTROM Filter correspondingly close to the digitalSTROM Meter. The cable length of the electrical connection between the digitalSTROM Filter and the digitalSTROM Meter must be kept as short as possible.
If additional digitalSTROM Meters are installed in other sub-distribution units, digitalSTROM Filters must necessarily also be installed.
Fasten the screws of the unused connection terminals on the digitalSTROM Filter while doing so.
The digitalSTROM Filter must be installed on the primary side of the digitalSTROM Meter. If the filter is located on the secondary side, communication in the digitalSTROM power circuit will be impaired!
 
Step 2: Installing and connecting the digitalSTROM Meter
Install the digitalSTROM Meter (dSM11 or dSM12) according to the installation instructions.
To ensure better heat dissipation at higher load and increased ambient temperature, distances between the digitalSTROM Meters should be maintained. If installed vertically, after every third digitalSTROM Meter 0.5 HP, and if installed horizontally, after every digitalSTROM Meter.
Fig. 5: Installing the digitalSTROM Meter
 
Disconnect the connections on the output side from the power circuit breaker.
Connect the digitalSTROM Meter according to the installation instructions.
The maximum current for the digitalSTROM Meter is 16 A.
If you use blue terminal blocks, a dSM12 must be installed.
The maximum line length between a digitalSTROM Meter and the last digitalSTROM device is 50 m.
 
Step 3: Installing and connecting digitalSTROM power supply unit
Install the 24 V DC power supply unit for the digitalSTROM Server according to the installation instructions on the top hat rail and connect the electrical connections.
The used power supply unit must have a rated voltage of 24 V DC +/-10 % and a minimum current of 0.4 A. Country-specific regulations must be complied with during assembly and wiring of the power supply unit.
 

Step4: Installing and connecting the digitalSTROM Server (optional)
The digitalSTROM Server comes in two variants: dSS11-1GB and dSS11-E.
The use of the dSS11-E is recommended only for large-scale installations with more than 100 digitalSTROM terminal blocks.
Install the dSS11-1GB on the top hat rail in the electrical power distribution board according to the installation instructions and connect it to the electrical connections. Make sure the 24 V DC supply to the digitalSTROM Server has the correct polarity!
If you use the dSS11-E, you have two possibilities of integrating this into the digitalSTROM electrical installation.
Variant 1:
Install the dSS11-E according to the installation instructions. We recommend installing the dSS11-E in the multimedia distribution board. The connection to the digitalSTROM Meters takes place directly via the dS485 bus connection.
Variant 2:
If you want to extend an existing digitalSTROM electrical installation with the dSS11-E and a dSS11-1GB is already installed in the electrical power distribution board, proceed as follows.
Install the dSS11-E according to the installation instructions. We recommend installing the dSS11-E in the multimedia distribution board.
Connect the dSS11-E to the network using an Ethernet cable via the router or with a switch.
Configure the dSS11-E as an additional digitalSTROM Server. You can adjust this in the digitalSTROM Configurator of the dSS11-1GB (https://dss.local). To do this, use the extended view to call up the System settings menu in the System tab. Under the Use Additional digitalSTROM server menu item you can configure the dSS11-1GB as a gateway. The dSS11-E is now the higher-level digitalSTROM server.
If the dSS11-E is used as an additional digitalSTROM Server, the dSS11-1GB software switches off and in the digitalSTROM Configurator only the System and Help tab will still be active. Please only use the digitalSTROM Configurator of the dSS11-E (https://dSSE.local) from now on.
Fig. 6: digitalSTROM Server dSS11-1Gb (left) and dSS11-E (right).

Step5: Connecting the Ethernet interface (optional)
Connect the Ethernet interface to a local network (router).
 
Step 6: Connecting the dS485 bus cable
Install the dS485 plug connector between the digitalSTROM Meters according to the installation instructions.
Please note here the following procedure:
Strip single-wire conductors 5 – 6 mm.
To connect, insert the stripped conductors into the existing plug as far as they will go.
If a digitalSTROM Server was installed, connect the digitalSTROM Server with the bus cable according to the installation instructions.
Make sure the connection terminals for the bus interconnection have the correct polarity!
A twisted-pair cable with a wire cross-section of 0.8 mm2 is to be used for the dS485® bus interconnection.
A maximum of one digitalSTROM Server may be connected to the dS485 bus interconnection!
Make sure that the enclosed terminating resistors are connected at both ends of the bus interconnection!
To release the dS485 plug connection, proceed as follows:
Hold the cable tight.
Move the dS485 plug carefully back and forth.
Remove the dS485 plug carefully.
The installation instructions and additional information can be downloaded at http://www.digitalstrom.com/support.