Figure 2.4.2-1
Figure 2.4.2-2
Figure 2.4.2-4
Figure 2.4.2-5
Figure 2.4.2-6
Figure 2.4.2-3
Note
：
The absence of AC breaker on Back-up side will lead to inverter damage if only electrical short
circuit happend on back-up side.
Note
1. Neutral cable shall be blue, line cable is black or brown (preferred) and protective earth cable
yellow-green.
2. For AC cables, PE cable shall be longer than N&L cables, so that if in any case AC cable slips or taken
out, the protecting earth conductor will be the last to take the strain.
Screwing torque
2.0-2.5N.m
Cables
AC breaker
AC breaker
AC breaker
AC breaker
Loads
Grid
Grid
Screw cap
AC sheet cover
The insulator
Single hole
seal ring
2.4.2 ON-GRID & BACK-UP CONNECTION
Special Adjustable Setting
The inverter has filed adjustable setting like tripping point, tripping time, reconnect time, active and
invalid of QU/PU curves etc. by special firmware. Please contact GoodWe after sales for the special
firmware and adjust methods.
• Requirement of AC cable connected to On-Grid and Back-Up side
（
Figure 2.4.2-3
）
Prepare the terminals and AC cables according to the right table.
Put AC cable through terminal cover follow the
sequence as on the right
（
Figure 2.4.2-4
）
Note
：
Please use the terminals in GoodWe
components box
Press the 10 connectors on cable conductor core tightly
（
Figure 2.4.2-5
）
Note
：
Make sure cable jacket is not locked within the connector
1. Connect the assembled AC cables into AC terminals with fastening torque about 2.0-2.5N.m.
Note: Connecting Back-up terminals before connect On-grid terminals.
Make sure it is not connected to a wrong side.
2. Lock the cover and screw the cap on
（
Figure 2.4.2-6
）
Make sure inverter is totally isolated from any DC or AC power before connecting AC
cable.
[5]
An external AC breaker is needed for On-Grid connection to be isolate from grid when necessary.
Below are the requirements of On-Grid AC breaker.
Inverter model
GW5K-BT
GW6K-BT
GW8K-BT
GW10K-BT
AC breaker specification
25A / 400V (e.g. DZ47-60 C25)
25A / 400V (e.g. DZ47-60 C25)
32A / 400V (e.g. DZ47-60 C32)
32A / 400V (e.g. DZ47-60 C32)
1. Use separate AC breaker for individual
inverter (Figure 2.4.2-1)
2. On AC side, the individual breaker should
be connected before loads
（
between
inverter and loads
）
（
Figure 2.4.2-2
）
Grade
A
B
C
D
Description
Outside diameter
Separated wire length
Conductor wire length
Conductor core section
Value
13-18 mm
20-25 mm
7-9 mm
4-6 mm
2
10
09
Step 1
Step 4
Step 3
Step 3
