Preliminary operations
Installation of the VSN300 Wi Logger Card must be carried out inside
the inverter and therefore the inverter must be completely disengaged.
For the correct disengagement procedure and the subsequent ope-
ning of the cover, refer to the manual of the specic inverter.
Some parts may be very hot and could cause burns.
Some inverter parts may be subject to voltages that could be hazardous for the operator.
Before performing any work on the inverter, follow the procedure for turning off the inverter.
Before attempting any work on the inverter, wait enough time for the stored energy to be
discharged.
By way of example, the gures to the side show the areas subject to
voltage inside the ABB TRIO inverter:
- Red: areas subject to input voltage (DC)
- Orange: areas subject to output voltage (AC)
- Green: areas subject to low voltage (selv)
• Disconnect any power supplies that may be connected to the congu-
rable relay.
• The gure on the left shows the areas subject to voltage in the inverter
under normal operating conditions.
• Open the DC disconnect switch on the outside of the inverter.
• Disconnect the grid voltage (by switching off the protective device
upstream of the inverter).
Under these conditions the inverter does not have any hazardous
voltages and all areas may be freely accessed.
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