Siemens Energy's high-power testing laboratory at the Schaltwerk Berlin that went into service in 1961 consists of several system components.
Technical data of short-circuit generator
Electrical characteristics of the transformers
The high voltage and high current are distributed to the three high-power testing laboratories by an aluminum-tube, duplicate bus bar system – rated for 150 kV and a short-circuit current of 170 kA - and located between the machine room and the test laboratory.
Located next to one another in the tension section laboratories are two bus bar systems, each of which is assigned a specific impulse transformer set and consequently one of the two independently usable short-circuit generators. Both bus bar systems are connected to the three-phase test-laboratory feeds located on the lower level via motorized linear-travel disconnectors. These allow variable connection to the individual test laboratories and therefore the necessary degree of flexibility in operation. If the two bus bar systems are connected in parallel, the total current of the two systems is available in the test laboratories. When required, the generator of the medium voltage test laboratory can be coupled to the bus bar systems via the overhead-line system to increase the testing power or to obtain other combined testing possibilities regarding switching capacity.
The disconnectors of the tension section laboratory can be remotely controlled by means of a mimic diagram with position indicator located in the control room. This ensures quick switching and a clear visual overview of the momentary operating state of the high-voltage circuit.