A current transducer system for measuring AC current in a high-voltage main circuit having a circuit breaker and a disconnecting switch in an integrated gas-insulated switchgear. The impact engine is powered by pressurized drilling fluid delivered via the drillpipe which acts on a piston to charge an energy accumulator, preferably in the form of a spring. The magnetic flux density per unit area of the microprobe is high. The window assembly also includes a second transparent portion and a second trim portion. The actuator arm is adapted to engage and actuate a nozzle of the container in the first position and allow a fluid disposed in an interior of the container to be dispensed through the nozzle and the dispensing bore of the actuator arm. The read transistors are connected in series in a plurality of cells, and are connected to the data line via a block selection transistor.