Installation Conditions - Siemens Sentron 7KN POWERCENTER 1000 Manual

Installation and connection
4.1 Preparing installation
4.1.3

Installation conditions

The installation devices can be installed on to any DIN rail in any installation position. The
direction of incoming supply is arbitrary and can be set as a parameter for the miniature
circuit breakers and arc fault detection devices.
In the 7KN Powercenter 1000 data transceiver, it should be ensured that there is enough
space for the Ethernet plug, pullout and the cable bending radius.
Furthermore, it is necessary to make sure that the data transceiver is mounted with a small
distance to metallic surfaces in all directions (apart from the DIN rail) so that the efficiency of
the integrated antenna is not impacted too much.
For the 3NA COM fuse, the usual installation position is vertical, as for the other LV HRC fuse
links. The current load does not need to be reduced under normal ambient conditions.
However, there are devices and applications, where the LV HRC fuse links are arranged
horizontally. As per usual, the instructions of the device manufacturer, especially the
maximum current carrying capacity, must be observed in this case.
Note
Overhead installation
The upside down installation of the 3NA COM LV HRC fuse links, i.e. with the electronic
module above the fuse unit is not permitted. It is possible to overheat the electronic module.
The ventilation slots must not be covered or closed. Observe the ESD guidelines (Page 103)
and the mounting instructions of the operating instructions of the electronic module.
The spatial arrangement of the communication-capable circuit protection devices one below
the other corresponds to the following recommendations:
(1) Prior to setting up the distribution board, pay attention to devices with a high tempera-
(2) The 7KN Powercenter 1000 and the associated terminal devices should be installed to-
(3) The maximum recommended distance between the terminal devices and the
(4) If possible, the 7KN Powercenter 1000 should be placed equally far away from all termi-
(5) Metallic partitions or other radio devices, that use the same frequency, should not be
(6) If more than 24 communication-capable circuit protection devices are installed, further
24
ture development. These should be positioned away from smaller, more sensitive devic-
es.
gether in a control cabinet or panel so that wireless communication is less disturbed by
other devices or obstacles.
7KN Powercenter 1000 should usually not exceed 3 m. The radio transmit power can be
changed as a parameter, which can either decrease or increase the permitted distance
between the devices. The standard setting of the transmit power of 0 dBm would allow a
distance of over 10 m without any other disturbances.
nal devices. Therefore, a centrally located place is recommended.
installed between the individual terminal devices and the 7KN Powercenter 1000 data
transceiver so that radio transmission can be permanently ensured.
7KN Powercenter 1000 devices will be required. Up to 4 data transceivers can be used
simultaneously. An equal distribution of the terminal devices to the different
7KN Powercenter 1000s is recommended.
Circuit protection devices with communication and metering function
System Manual, 06/2021, L1V30827018B-01