7 Electrical Connection
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point on the enclosure.
Procedure:
1) Insert the grounding conductor into the suitable terminal lug and crimp the contact.
2) Fix terminal lug on external ground point by screw M4x10. Torque: 1.4 N.m.
FIG. 7-1 External Grounding Point Position
Note:
The inverter complies with AS/NZS 5033.The installer does not need to perform any additional action, as this is already
set up. In the event of an earth fault, there will be a buzzer sound and a red light. The buzzer in the inverter will keep
ringing unless the fault condition is cleared.
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.
Note: If an external RCD is used, a device of type A should be used, with a tripping current of 300mA or
higher.
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-7K-S22003-E
40 A
CSI-8K-S22003-E
50 A
CSI-9K-S22003-E
50 A
Recommend maximum AC cable length:
Conductor cross section
Inverter Type
Allowed Max. length
4.0 mm
2
6.0 mm
2
10.0 mm
2
16.0 mm
2
CSI-7K-S22003-E
22 (m)
33 (m)
56 (m)
N/A
CSI-8K-S22003-E
N/A
26 (m)
43 (m)
69 (m)
CSI-9K-S22003-E
N/A
26 (m)
43 (m)
69 (m)
AC Three-core cable:
The grid connection is established by using three-core cable (L, N, and PE, as per FIG. 7-4).