CanadianSolar CSI-3.68K-S22002-E, User Manual

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7 Electrical Connection
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7.5 Wiring AC Output
Warning
To ensure the inverter can be safely disconnected with load, must install a separate single-phase
circuit-breaker or other load disconnection unit for each inverter.
Note: The inverter is equipped with integrated RCM (Residual current operated monitor) and RCD
(Residual current protective device). The rated residual current of the circuit breaker must be over
300mA when the AC circuit breaker with RCM function selected.
Notice
The total capacity of PV-inverter is more than 3KW and less than or equal 6KW, the inverter's
displacement power factor is adjustable between 0.95 leading to 0.95 lagging, and do not need
external SPI.
The total capacity of PV-inverter is more than 6KW, the inverter's displacement power factor is
adjustable between 0.9 leading to 0.9 lagging, meanwhile need external SPI.
Install an independent two-pole circuit breaker at the output side of the inverter for protection, the recommended AC
circuit-breaker specifications are as follows:
Inverter type AC circuit-breaker specifications
CSI-3K-S22002-E 25 A
CSI-3.68K-S22002-E 25 A
CSI-5K-S22002-E 32 A
Recommend maximum AC cable length:
Inverter type Conductor cross section 4.0mm 2 Conductor cross section 6.0mm 2
CSI-3K-S22002-E 53 (m) 79 (m)
CSI-3.68K-S22002-E 45 (m) 67 (m)
CSI-5K-S22002-E 29 (m) 43 (m)
AC Three-core cable:
The grid connection is established by using three-core wire (L, N, and PE, as per FIG. 7-3).
Components of AC connector:
The AC connector is made of four components: pressure nut, sealing ring, threaded sleeve, plug.
Pressure Nut Sealing Ring Threaded Sleeve Plug (Metal pins and shell)
FIG. 7-2 Components of Connector
AC connectors have two types, EXCEEDCONN type or DEVALAN type, follow-up procedure:
1) Strip the cable’s jacket, and then adjust the relative length of L, N and PE cables, to make the length of PE cable is at
least 5mm longer than L and N ones, as per FIG. 7-3.
30.0
25.0
PE
N
L
50.0
45.0
PE
N
L
EXCEEDCONN type DEVALAN type
FIG. 7-3 Adjust the Cable Length
2 ） When using flexible cables, the conductor must be connected with suitable core end ferrules according to DIN
46228-4, as per FIG. 7-4.