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User Manual 3000SP
Rev. 1.1 16/03/2021
Identification: MD-AL-GI-00
Rev. 1.1 of 16/03/2021 - Application: GID
4.
Electrical connections
•
Carefully assess the risks deriving from electric shocks and chemical hazards!
•
Use a multi-metre to check the DC polarity of the battery and cables before connecting the power supply
between the batteries and inverter.
NOTE: an inverted polarity connection may cause irreparable damage to the inverter and batteries.
Note: the Pylontech batteries, as well as the WeCo batteries do not require a disconnecting device for
connecting to the storage inverter. The Cable kit, which includes crimped power cables for connecting
the Pylontech batteries to the 3000SP storage inverter, is supplied separately. It is recommended to
ensure that your storage kit is equipped with this accessory. In the case of Pylontech and WeCo batteries,
the connection kit is already inside the package.
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A 25 AC disconnecting device (circuit breaker) must be installed between the 3000SP inverter and the
power grid. It is also recommended to use a differential with a trip threshold of 30 mA between the
3000SP inverter and power grid.
•
For safety and proper functioning of the system, it is important to use a cable of the appropriate type and
size for the electrical connections.
- Battery connection: DC cable with cross-section of AWG8 or AWG6 (supplied).
- Grid or load connection: AC cable with cross-section of AWG12.
Figure 9 - Detailed diagram of the connections of a single-phase system
