Applications

Main applications where contactors are used for DC switching are:

•  Disconnection of the inverter from the PV strings when the

output is too low.

• Changing the string configuration, e.g. to increase plant

efficiency by diverting one or several PV strings to an opti-

mal number of converters at low output. This makes it

possible to constantly optimize the efficiency of the system.

Applications – other

There are several other DC-applications in which ABB’s GAF & AF contactors can be efficiently used.

Traction

Traction vehicles

• Urban traction vehicles such as trams,

subways, commuter trains etc.

• Diesel locomotives

•  Heating applications

Traction wayside

• Signaling

• Switchgear

• Power distribution