Appendix C: CT Installation Manual Guide
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Appendix C: CT Installation Manual Guide
CT Installation Manual Guide
(Part No.: 2809000901 Release Date: March, 2021)
1. Scope
CSI inverters integrate the export limitation function, to use this function, please read this installation guide to install the CT sensor and set
the inverter.
This CT sensor applies to PV inverter models: CSI-3K-S22002-E, CSI-5K-S22002-E; CSI-3K-S22002-ED, CSI-5K-S22002-ED; CSI-7K-S22002-E, CSI-
9K-S22002-E; CSI-7K-S22002-ED, CSI-9K-S22002-ED; CSI-7K-S2203A-E, CSI-9K-S2203A-E; CSI-7K-S22003-E, CSI-9K-S22003-E, CSI-5K-S22003-E.
2. CT Specification
Model Name
CTSA016-100A/33.33mA
Rated primary current
100 A
Rated secondary current
33.33 mA
Secondary load
10 Ω
Power frequency withstand voltage 4000V / 10S, 1mA
Insulation resistance
100MΩ @ 500Vdc
Accuracy
± 0.5 %
Maximum current
120 A continuous
Environmental protection
ROHS
Dotted terminal
P1 and red cable
Dimension (W x H x D, mm)
30.5 X 49 X 34 mm
Signal cable length
5 m (not including CT sensor)
FIG.1 Outline and Dimensions of CT
3. CT installation
3.1 System diagram.
L
N PE
L
N
PE
~
CT
CT/METER
L
N PE
Load
FIG.2 Electrical and signal connection diagram
3.2 Wiring signal cable
3.2.1 Wiring signal connector
1) Diagram of connector, as per FIG.3.
2) Prepare the CT (signal) cable
Remove the CT cable’s jacket about 23mm, and then strip the wire insulation layer by about 7mm, as per FIG.4.
16
7
Pressure Nut Sealing Ring Threaded Sleeve Plug (Meter Pins and shell) FIG.4 Strip Signal Cable
FIG.3 Components of Connector
Recommend the specification of the signal cable
：
Cable Type
Conductor Cross-Sectional Area
Outer Diameter
Two cores cable.
0.2-0.75mm
2
(24~18AWG)
3.5~5.5mm
Note: Signal cable length (not including CT sensor) is 5m. For extension cables, please see above specifications.
Signal cable
Note: The arrow has to be pointing to
the grid side, not the load side.
21.0
16.0
49.0
30.5
30.7
34.0
