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Layout of a semiconductor switch unit
1
4
5
2
7
8
3
9
6
6
9
5
Door devices. See
Control of the semiconductor switch unit (page 18)
1
DC breaker switch [Q3]
2
Terminal block for external control connections [X330]
3
Modbus connector (Ethernet RJ485) [R3.1:X20] on the breaker control interface unit (behind the support)
4
Backup fuses [F3.1, F3.2, F260]
5
Cooling inlet manifold with stop and drain valves
6
Heat exchanger
7
Fan [G115.11]
8
Cooling outlet manifold with stop and drain valves
9
Operation principle and hardware description 17