Connecting The Meter Communication Cable - Goodwe ET Series User Manual

User Manual V1.1-2022-12-20

6.7.2 Connecting the Meter Communication Cable

• The smart meter and CT have been preset parameters before delivered with the inverter.
Do not modify the relevant parameters.
• Each smart meter needs to be connected to one inverter independently. Do not connect
one smart meter to multiple inverters.
• Confirm the following items for a proper use of the smart meter and CT:
1. Ensure that CT connects with the corresponding phase line: CT1 is connected to L1; CT2
is connected to L2; and CT3 is connected to L3.
2. Connect CT according to the pointing direction of the smart meter. It will display CT
reverse fault on the inverter if it is the opposite direction.
• The CT cable is 3m or 5m long as a default.
• The communication cable connecting the inverter and the smart meter cannot be longer
than 100m. RJ45 connector with the following definition can be connected for BMS
communication:
NOTICE
To Smart Meter
43
No. Color
Orange and
1
White
2 Orange
Green and
3
White
4 Blue
Blue and
5
White
6 Green
Brown and
7
White
8 Brown
06 Electrical Connection
Smart
meter
NC
NC
485_B1
NC
NC
485_A1
485_B1
485_A1