Connection Cables; Miniature Circuit Breakers - INVT iMars Operation Manual

iMars grid-tied solar inverters
(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
12kW / 15kW / 17kW
/ 20kW-M
20kW / 25kW
30kW / 33kW / 35kW
/ 40kW

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
12kW
15kW
17kW
20kW-M
20kW
25kW
30kW
33kW
35kW
40kW
DC side
Min cross-section
area
mm²(length≤50m)
4
4
4
DC input
Recommended DC breakers
DC1000V, C32A, 2P
DC1000V, C32A, 2P
DC1000V, C32A, 2P
DC1000V, C40A, 2P
DC1000V, C40A, 2P
DC1000V, C40A, 2P
DC1000V, C50A, 2P
DC1000V, C50A, 2P
DC1000V, C50A, 2P
DC1000V, C50A, 2P
Min cross section
area mm²
(Length>50m)
6
6
6
Recommended AC breakers
24
Installation
AC side
Min cross section area
mm² (Length≤50m)
L N/PE
6
8
10
AC output
AC400V, C25A, 4P
AC400V, C32A, 4P
AC400V, C35A, 4P
AC400V, C50A, 4P
AC400V, C50A, 4P
AC400V, C63A, 4P
AC400V, C63A, 4P
AC400V, C63A, 4P
AC400V, C63A, 4P
AC690V, C63A, 4P
4
4
6