S-50 DC
● S-80 DC ● S-110 DC ● S-120 DC – USER MANUAL
10
3.5
Connecting the test equipment
NOTE!
Before connecting the equipment, make sure that the oil level is visible in the centre of
the oil-level lens
. If not, measurements are forbidden.
Before the test equipment is connected, safe isolation from supply must be established and safe-
guarded in accordance with EN 50110-1. The requirements of EN 50191 and EN 50110-1 standards
must be complied with. The test equipment should be connected in the following order:
Ground and short-circuit the conductor of the test object that is not going to be tested (connect
to station ground or auxiliary ground point). In the case of ungrounded test objects, the test set
can only be used if an auxiliary ground is provided.
Establish a conductive connection between the station/auxiliary ground and the ground terminal
of the high-voltage unit
.
Screw the high-voltage attachment
onto the high-voltage unit and connect the high-voltage
terminal
to the test object.
Connect the ground terminal of the operating unit
to the station/auxiliary ground.
Connect the ground and discharge rod to the ground terminal of the test object and hold the
discharge rod at the ready.
Connect the five-pole connecting cable, which is permanently attached to the operating unit, to
the high-voltage unit (terminal
).
Connect the operating unit to the mains.
NOTE!
The blue connecting cable between high-voltage terminal and test object is to use as
uninsulated overhead cable.
If the device is powered by Mains Voltage from a grounded Mains socket (the yellow
control light lights on), there is no need of additional grounding by the green/yellow
protection ground cable. That’s important to avoid ground loops.
