Spanish to English Tech/Engineering Automotive / Cars & Trucks transmissions and current regulators

This is another sentence from the document translated out of German previously mentioned (click on the magnifying glass icon for previous unclosed questions to see).

The context: "Para evitar grandes Stromtransienten en la [gearbox model], todas las fases finales de los tiempos deberán regularse con la fase corrida. El objetivo es la toma de corriente regular desde las red de a bordo." "Grandes Stromtransienten" would refer to large accumulations of transient current. My problem is interpreting "fase corrida".