HS2/AS2 Series
37
38
Figure 5.4
Connecting the AC/backup
connector
5.2.1 Earth Fault Alarm
This inverter complies with IEC 62109-2 clause 13.9 for earth fault alarm monitoring. If an Earth Fault Alarm
occurs, the ring light will be lit up in red and error code <31> will be displayed on LED panel 1 until the error
being solved and inverter functioning properly.
5.2.2 External AC Circuit Breaker and Residual Current Device
Please install a circuit breaker to ensure the inverter is able to disconnect from grid safely. The integrated
leakage current detector of inverter is able to detect the real time external current leakage. When a leakage
current detected exceeds the limitation, the inverter will be disconnected from grid quickly.
The inverter does not require an external residual current device, as it has integrated with a RCMU. If local
regulations require the application of external residual current device, either type A or type B RCD is
compatible with the inverter. The action current of external residual current device should be 300mA.
Inverter type
Recommended breaker specification
HS2-5-10K-T2
63A
Notice: Do not connect multiple inverters to one AC circuit breaker.
Table 5.2
Recommended circuit breaker specification
5.3 PV Side Connection (Applicable for HS2 Series)
WARNING
·
Make sure the PV array is well insulated to ground before connecting it to the inverter.
Conductor cross-sectional area of cables
（
mm
²）
Conductor material
Scope
Recommended value
Outdoor multi-core copper wire
cable, complying with 600Vdc
4.0~6.0
4.0
Table5.3
Recommended specifications of DC cable
BACK-UP
Load
Grid
