Baur SSG 1100, Руководство пользователя

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1 Product Information
1.1 Design and function
Design
Instruments of the SSG family are rack mounting units in the 19" format. Various operating and
indicating elements are mounted on the front panel, connecting elements are mounted on the
back plate. The instruments contain their own high voltage generator, impulse-proof surge
capacitors, automatic and manually triggered spark gaps and an internal discharge device. The
instrument control contains the necessary safety circuits also for connection of an external
Emergency Stop unit and for the operation of the SA 32 option
High voltage generation
Mains is connected to a variable transformer which supplies the primary winding of a H.V.
transformer. The secondary windings of the high voltage transformer features four high voltage
windings, fully isolated of each other, which are connected each to a partial
capacitor through a half-wave rectifier. Using the range selector switch (15) the partial capacitors
become connected to each other. The series connection allows a maximum voltage of 32kV. The
connection of two capacitors each in series and parallel allows a
maximum 16kV and the complete parallel connection of the capacitors leads to a maximum
voltage of 8kV. In this configuration it can be accomplished, that the maximum surge energy of the
capacitors is available in three voltage ranges.
Function
The Surge Voltage Generators SSG 1100, SSG 1500, SSG 2100 and SSG 3000 are designed in
such a way that they generate pulse-shaped voltages with a steep edge, which should start to
break down the cable fault. The high surge current flowing at the cable fault
generates electromagnetic and acoustic waves which radiate from the cable fault. These waves
can be detected on the ground surface with appropriate detection devices such as search coils or
ground microphones. The SSG 1100, SSG 1500, SSG 2100 and SSG 3000
however can also be implemented for pre-location. In this case they are used as burn down
device for short time operation or they can be used with an echometer and the SA 32.