Mounting and wiring
EL3783
38
Version: 1.1
4.6
LEDs and connection
WARNING
Do not operate current transformers in no-load mode!
Please note that many manufacturers do not permit their current transformers to be operated in no-load
mode! Connect the EL3783 to the secondary windings of the current transformers before using the current
transformer!
WARNING
Earthing of the terminal point N when measuring current!
If you do not connect the terminal point N with the neutral conductor of your mains supply (e.g. if the
EL3783 is used purely for current measurements), terminal point N should be earthed, in order to avoid
dangerous overvoltages in the event of a current transformer fault!
Fig. 29: EL3783
Terminal point
Description
Name
No.
IL1
1
Phase L1 current measurement input
IL2
2
Phase L2 current measurement input
IL3
3
Phase L3 current measurement input
4
n.c.
IL1'
5
Phase L1 current measurement output
IL2'
6
Phase L2 current measurement output
IL3'
7
Phase L3 current measurement output
N
8
Neutral conductor