- Instruction Manual for ESS R050100-
27
3.5.4 CT connection
The Smart Meter with CT in product box is compulsory for inverter installation, used to detect
grid voltage and current direction and magnitude, further to instruct the operation condition of ET
inverter via RS485 communication.
Note:
1.
The meter and CT is well configured, please do not charge any setting on meter;
2.
One Smart meter can only be used for one ET inverter.
3.
Three CTs must be used for one smart meter, and must be connected on the same phase with
smart meter power cable.
Picture 3-6 Smart Meter & CT Connection Diagram
Note:
1.
Please use the Smart Meter with 3 CTs in product box.
2.
CT cable is 3m as default, could be extended to max 5m.
3.
Smart Meter communication cable (RJ45) is attached on the inverter (“To Smart Meter ”
cable), could be extended to max 100m, and must use standard RJ45 cable and plug, as
below:
Picture 3-7 Inverter RJ45 pin definition description
Picture 3-8 Smart Meter LED Indications
