Siemens UL 489 - Metering Module Only

8 – 8
8.7.2 Metering module only
1)
Jumper X8.9-X8.10 if there is no external N sensor
2)
Terminating resistor 120 , 0.5 W on X8-1 / X8-2, if no external c- module is connected
3)
If no metering module and no BSS module is used: Direct connection X8 to ETU
4)
Connection to external voltage transformers
_u
External Air Core
Sensor Input
External Iron Core
Sensor Input