Baur SSG 500, Operating Instructions Manual, Page: 16 / 32

3-2
3. Placing into operation
Operating modes
Impulse operation
The impulse operation serves first of all for fault locating and is
divided into manual and automatic impulse triggering.The mode
selector switch (14) allows to switch between positions „Zero
position“, „Slow impulse sequence“ and „Fast impulse sequence“
even during operation and under voltage.
Manual impulse triggering is primarily intended for application of the
surge voltage generator in pre- locating, as for example in
connection with the Intercom SA 32 (option) and the echometer. By
applying the secondary impulse method in high resistance faults,
an assessment of the fault distance with one or a few impulse
trigger actions can already be made.
z
If instrument is in operating condition „IN OPERATION“ place
operating mode selector switch (14) from zero position into =
position momentarily and reset again.
Automatic impulse triggering is primarily used for pin-pointing a
cable fault.
The SSG 500 is equipped with a timer coupled to the mains
frequency which allows automatic impulse triggering with impulse
frequencies of 10/min and 20/min. The regularity of the subsequent
impulses serves to better differentiate between the signals of the
fault location and interferences.
z
Switch operating mode selector switch (14) to impulse sequence
10/min or 20/min.
If the instrument is in the operating condition „READY
TO SWITCH ON“ it closes the spark gap automatically
according to the appropriately selected impulse sequence.
Manual impulse triggering
Automatic impulse triggering