Operation principle and hardware description 47
Description
1 DC cable lead-throughs
2 DC input terminals (fuse protected)
3 Input DC fuses
4 Connecting knobs for temporary grounding of the DC busbars for work
5 DC main switch
6 Ground fault monitoring device (options +Q954, +Q976 and +Q981)
7 DC contactor
8 Inverter DC fuses
9 Inverter module
10 Inverter module cooling fan
11 LCL filter
12 LCL filter cooling fan
13 AC contactor
14 AC fuses
15 AC main switch-disconnector (Q1)
16 AC output (grid connection) terminals with connecting knobs for temporary grounding for work
17 Cabinet fans (on the cubicle doors)
18 AC output cable lead-throughs
19 Grid monitoring relay (options +Q969, +Q974, +Q975 and +Q980)
20 Heating resistor (option +G300)
21 AIMA I/O module adapter
22 Charging circuit fuses
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