iMars grid-tied solar inverters Installation
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(8) The installation should ensure that the inverter is reliably grounded, and the material of
grounded metal conductor should be consistent with the metal material reserved for the
grounding of the inverter.
Do not remove any part and component of the inverter unintended; otherwise
damage to the device and physical injury may occur.
4.2.3 Connection cables
In order to regulate and compatible with the inverter AC/DC connector or terminal block
specifications, below requirements on the AC/DC leads connected to corresponding inverter
models should be fulfilled:
Table 4-4 Cable specifications
Model
DC side
AC side
Min cross-section
area
mm²(length≤50m)
Min cross section
area mm²
(Length>50m)
Min cross section area
mm² (Length≤50m)
L
N/PE
12kW / 15kW / 17kW
/ 20kW-M
4
6
6
4
20kW / 25kW
4
6
8
4
30kW / 33kW / 35kW
/ 40kW
4
6
10
6
4.2.4 Miniature circuit breakers
In order to ensure safe operation of the inverter and circuits, it is recommended to configure
corresponding micro breaker or fuse on the DC input end and AC output end of the inverter. Table
4-5 is the requirements recommended for micro breaker:
Table 4-5 Breakers specifications
Model
DC input
AC output
Recommended DC breakers
Recommended AC breakers
12kW
DC1000V, C32A, 2P
AC400V, C25A, 4P
15kW
DC1000V, C32A, 2P
AC400V, C32A, 4P
17kW
DC1000V, C32A, 2P
AC400V, C35A, 4P
20kW-M
DC1000V, C40A, 2P
AC400V, C50A, 4P
20kW
DC1000V, C40A, 2P
AC400V, C50A, 4P
25kW
DC1000V, C40A, 2P
AC400V, C63A, 4P
30kW
DC1000V, C50A, 2P
AC400V, C63A, 4P
33kW
DC1000V, C50A, 2P
AC400V, C63A, 4P
35kW
DC1000V, C50A, 2P
AC400V, C63A, 4P
40kW
DC1000V, C50A, 2P
AC690V, C63A, 4P
