Manual for installation of the Sensformer® Connectivity Device 
 
  © 2020 Siemens Energy  Page 5 
 
2.  Quick start 
The Sensformer Connectivity Device is the data acquisition unit, 
which collects analog and digital data from the transformer and 
publishes to the management software. 
The Sensformer Connectivity Device is not a controlling solution, 
the  provided  data  shall  not  be  the  base  of  control-,  or 
management decisions regarding the transformer or  the power 
system. 
The  device  is  not  replacing  conventional  safety  and  security 
solutions.  For  critical  operations  always  rely  on  data  from 
multiple sources. 
The Sensformer Connectivity Device has 3 analog inputs, 1 PT100 
input, 2 digital inputs, 1  Ethernet  port, 1  ModBus  port,  2  SMA 
antenna ports (GSM and GPS) and a SIM card slot. The following 
steps shall be followed to get started. 
 
Power  supply  and  digital  inputs  are  not  allowed  to  be 
connected  during  installing  and/or  wiring  Sensformer 
Connectivity Device. 
Risk of electric shock! 
The  digital  inputs  are  not  allowed  to  be  powered  when 
installing and/or wiring Sensformer Connectivity Device! 
Risk of electric shock! 
Only connect certified external devices to outputs that 
are  safety  extra  low  voltage  (SELV)  rated  to  the 
equipment to avoid the risk of electric shock.