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06 Electrical Connection
User Manual V1.6-2024-03-20
NOTICE
• Install one AC output circuit breaker for each inverter. Multiple inverters cannot share one
AC circuit breaker.
• An AC circuit breaker shall be installed on the AC side to make sure that the inverter can
safely disconnect the grid when an exception happens. Select the appropriate AC circuit
breaker in compliance with local laws and regulations.
WARNING
• Do not connect loads between the inverter and the AC switch directly connected to the
inverter.
• The residual current monitoring unit (RCMU) is integrated into the inverter to avoid the
residual current exceeds the limit.
• The type A RCD can be connected to the inverter for protection according to the local
laws and regulations. Recommended specications: ON-GRID RCD: 300mA; BACK-UP RCD:
30mA.
• When the inverter is powered on, the BACK-UP AC port is charged. Power o the inverter
rst if maintenance is required for the loads connected with BACK-UP ports. Otherwise, it
may cause electric shock.
6.6 Connecting the AC Cable
WARNING
• Connect the AC cables to the corresponding terminals such as “L1”, “L2”, “L3”, “N”, and PE
correctly. Otherwise it will cause damage to the inverter.
• Ensure that the whole cable cores are inserted into the terminal holes. No part of the cable
core can be exposed.
• Ensure that the insulation board is inserted into the AC terminal tightly.
• Ensure that the cables are connected securely. Otherwise it will cause damage to the
inverter due to overheat during its operation.
BACK-UP
ON-GRID
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