Sonel S-110 DC, Руководство пользователя

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S-50 DC
● S-80 DC ● S-110 DC ● S-120 DC – USER MANUAL
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2 Overview and functions
The S-50 / 80 / 110 / 120 DC is a generator of high direct voltages. The insulation of cables, elec-
trical plant and plant components can be tested for electric strength with this set. The insulation re-
sistance of test objects can be determined by measuring current and voltage using integrated measur-
ing instruments according to the equation:
I
U
R

where:
U
– measuring voltage,
I
– measured current.
A special protective ground circuit ensures a high level of safety.
2.1 Design of the set
The test set consists of the operating unit and the high-voltage unit. All the controls and displays
are arranged clearly in the operating unit. The high-voltage transformers, measuring dividers and recti-
fiers are housed in the high-voltage unit, which is filled with oil (see fig. Fig
. 2 . 1).
The two units are linked by a five-pole cable which is connected to the back of the operating unit.
Fig. 2.1 View of operating unit (left) and high-voltage unit (right)