8.9 (Optional) Installing DDSU666-H Cables
Table 8-1 Cable connection
Name DDSU666-H Side ESS Side
RS485 communications
cable
485A K1-COM1:+>1PGH1:485A
(preinstalled before
delivery)
485B K1-COM1:->1PGH1:485B
(preinstalled before
delivery)
Current transformer
cable
CT:5 I* (white)
CT:6 I (blue)
XT1:1:2>1FCB:1
Power cable L XT1:3:1>1PGH1:L
N XT2:3:1>1PGH1:N
Figure 8-22 Connecting cables
If the ESS is connected to an external UPS, the connection method is the same. However, in
this scenario, the DDSU666-H cannot measure the power consumption of the 12 V adapter
and there is a maximum error of 0.024 kWh per hour.
LUNA2000-(97KWH-1H1, 129KWH-2H1,
161KWH-2H1, 200KWH-2H1) Smart String ESS
User Manual 8 Installing Cables
Issue 10 (2023-11-07) Copyright © Huawei Digital Power Technologies Co., Ltd. 125
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