Goodwe UT Series - Electrical Connection; Safety Precaution

24
06 Electrical Connection User Manual V1.0-2023-03-20
6 Electrical Connection
6.1 Safety Precaution
NOTICE
• Wear personal protective equipment like safety shoes, safety gloves, and insulating gloves
during electrical connections.
• All electrical connections should be performed by qualied professionals.
• Cable colors in this document are for reference only. The cable specications shall meet local
laws and regulations.
• The inverter must be licensed by the electricity authority of the country/region in which it is
located before it can be connected to the grid.
DANGER
• Disconnect the DC switch and the AC breaker of the inverter to power o the inverter before
any electrical connections. Do not work with power on. Otherwise, an electric shock may
occur.
• Perform electrical connections in compliance with local laws and regulations. Including
operations, cables, and component specications.
• If the cable bears too much tension, the connection may be poor. Reserve a certain length of
the cable before connecting it to the inverter cable port.
No.
Cable Type
Cable specication
Cabel diameter (mm)
Cross-sectional area (mm
2
)
1 DC cable
PV cable that meets
1500V standard.
5.5-8 4-6
2 AC cable
Multi-core outdoor
copper or aluminum
cable
[1]
35-75
• Copper cable: 70≤S≤400
• Aluminum cable:
150≤S≤400
• S
PE
≥ S/2
Single-core outdoor
copper or aluminum
cable
[1]
• Single core cable:
20-38
• PE cable: 16-28
• Copper cable: 70≤S≤400
• Aluminum cable:
150≤S≤400
• S
PE
≥ S/2
3 PE cable Outdoors Cable - S
PE
≥ S/2
4
RS485
communication
cable
Outdoor shielded
twisted pair cable
that meets loacal
requirements.
[2]
8-11 -
NOTICE:
[1] A copper to aluminum wiring terminal is required when using an aluminum cable.
[2] Cable length of the RS485 communication cable: ≤1000m.
The values in this table are valid only if the external protective earthing conductor and the
phase conductors are the same material. Otherwise, the cross-sectional area of the external
protective earthing conductor is to be determined in a manner which produces a conductance
equivalent to that which results from the application of this table.
Cable speci󽗉cation requirements
S
PE
is the cross-sectional area of the PE cable, and S is the cross-sectional area of the AC cable.