11
3 Placing into operation
The surge voltage generators of the SSG family are primarily intended for
use in the field of power cables. Do not use them for data transmission
cables or communication cables!
3.1 Operating
modes
Impulse operation
The impulse operation serves first of al for fault locating and is divided into manual and automatic
impulse triggering. The mode selector switch (6) allows to switch between positions „Manual
impulse sequence“, „Slow impulse sequence“ and „Fast impulse sequence“ even during
operation and under voltage.
Manual impulse triggering
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.
Turn mode selector switch (6) into position 0.
- The pushbutton switch for single impulse triggering is now activated. The spark gap
can be activated by pressing the pushbutton switch as soon as the instrument is in
the operating condition "READY TO SWITCH ON".
Automatic impulse triggering
Automatic impulse triggering is primarily used for pin-pointing a cable fault.
The SSG 1100, SSG 1500 and SSG 2100 are equipped with a timer coupled to the mains
frequency which allows for automatic impulse triggering with impulse frequencies of 10/min and
20/min. The timely regularity of the subsequent impulses serves to better differentiate between
the signals of the fault location and interferences.
Depending on different surge capacities and performance of instruments the following
impulse frequencies (per minute) are available at 50 Hz.
Mode selector switch
SSG
1100
SSG
1500
SSG
2100
SSG
3000
Slow impulse sequence
10 / min
20 / min
10 / min
10 / min
Fast impulse sequence
20 / min
30 / min
20 / min
15 / min
Turn mode selector switch (6) to the left position "Slow impulse
sequence" or to the fully left position "Fast impulse sequence".
- Once the instrument is in the operating condition „READY TO SWITCH ON“ it closes
the spark gap automatically according to the appropriately selected impulse sequence.
Содержание SSG 1100
Страница 2: ...2 ...