Instructions

Connection of the instrument 17
Manual econ sens3 Version 3.0
5.4 Supply voltage connection
Operation of the econ sens3 requires a supply voltage of 100 to 240 VAC. Fig. 6 shows the
connection of the supply input to the network. Connection examples for 1 and 3-phase networks are
found in Chapter 5.10.
When connecting the supply voltage, the following must be noted:
1.) Disconnect device:
An appropriate disconnect device must be installed upstream of the econ sens3 “supply”
connection in order to disconnect the instrument from the current and voltage supply.
This disconnect device must be
• Installed close to the instrument and easy for the user to access
• Marked as disconnect device for the instrument.
2 Supply / auxiliary connection
Pin No.
Name
Function
1
Connection for functional earth (PE)
2
N
Connection for neutral conductor
3
PRN
Connection for neutral conductor to current
supply
4
PRL
Connection of a phase to current supply
Figure 6: Connection of supply voltage