Huawei DTSU666-HW/YD Series Quick Manual page 8

Connection Through Current Transformer and Voltage Direct
3.4
Connection (Current > 80 A, Line Voltage ≤ 500 V)
Current transformers specifications: The accuracy class is 0.5, and the current on the secondary
side is 1 A or 5 A.
SmartLogger networking
•
Three-phase four-wire
connection
In the SmartLogger
networking scenario, the
power meter is connected to
the SmartLogger. In the non-
SmartLogger networking
scenario, the power meter is
connected to the inverter.
(1) Shield layer of the signal cable
•
Three-phase three-wire connection
Please ensure that the
ground cable is installed
securely. Poor grounding
may cause electric shocks.
• You need to set
parameters after
cable connections
are complete. For
details, see section 4
"Display and
Parameter Settings".
• For the three-phase
three-wire
connection, phase B
does not need to
connect to a current
transformer.
(1) Shield layer of the signal cable
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