- Instruction Manual for ESS R050100-
25
3.5.4 On-grid & Backup connection
An external AC breaker is needed for on-grid connection to isolate from grid when necessary.
Below are the requirements on AC breaker:
Model
AC Breaker specification
Cable(mm
2
)
5KW
25A/400V(e.g. DZ47-60 C25)
8KW/10KW
32A/400V(e.g. DZ47-60 C32)
Note: The absence of AC breaker on back-up side will lead to inverter damage if only electrical
short-circuit happened on back-up side.
Make sure inverter is totally isolated from any DC or AC power before connecting AC cable.
Note:
1.
Neutral cable shall be blue, line cable 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 token out, the protecting earth conductor will be last to take thestrain.
Follow the steps below to complete the AC cable connection:
(1)
Prepare the terminals and AC cables according to the left table.
Grade
Description
Value
A
Outside Diameter
13-18mm
B
Separated wire length
20-25mm
C
Conduct wire length
7-9mm
D
Conduct core section
4-6mm
2
1.Use separate AC breaker for
individual inverter.
2.On AC side, the individual breaker
should be connected before loads
(between inverter and loads)
