HYD 5/6/8/10/15/20KTL-3PH USER MANUAL
5.4 Smart Meter /CT
There are different system configurations possible depending on
the user's requirements, existing electrical infrastructure and
local regulations. The distribution box must be configured to
comply to the grid operator requirements.
The inverter has an integrated AC relay to disconnect all phases
and Neutral from the grid in case of grid fault or grid outage.
The inverter's generation and feed-in limit functions require the
use of an external measurement device to obtain grid
information.
There are 3 system configurations:
System A: direct measurement of energy with CTs (3000:1)
System B: measurement of energy with smart meter + CTs(200
A/5 A default)
System C: measurement of energy with directly connected
smart meter
For System A or B, customers can choose different CTs
based on the installation. The secondary side current of
Scheme A is less than 100mA, while the secondary side
current of Scheme B is 5A. The length of the lead of CT
cannot exceed 1 km.
In the following three situations, the system must be
connected to the fuse first and then to the machine's
input terminal:
Lead-acid battery
Lithium battery without BMS
Multiple lithium batteries connected to one
input
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