Operation manual ISOTEST 4 S / 4 S
p l u s
Page 21
b) Grounding of completely coated test objects by using grounding
foil
Required accessories:
Grounding cable Y - type
(clamping tongs - clamping tongs/plug)
Part number 0174250010
Grounding foil
Part number 0174500100
Application:
1. The ratio of the areas of the testing electrode to the grounding foil is
smaller than 1 : 10. This means that the contact area of the
electrodes must not exceed 10% of the foil area.
Cut the grounding foil to the required size.
Tear off the protective foil by holding at the edges, and fold one
corner. Glue the remainder of the grounding foil over the entire
surface and remove all air bubbles by wiping. Remove the protective
foil step by step.
2. Connect the plug of the Y grounding table to the grounding receptacle
of the ISOTEST
®
test equipment. To prevent inadvertent pulling of the
plug, hook up the stress relief attached to the grounding cable to the
snap link at the equipment bag.
3. Attach a pair of clamping tongs at the grounding cable to the folded
corner of the grounding foil, and attach the second pair of clamping
tongs to ground, ensuring a low-resistance path. To obtain safe
stress relief for the clamping tongs at the grounding foil, secure the
clamping tongs with adhesive tape, e.g., friction tape.
4. Turn the ISOTEST
®
test equipment on and perform the high-voltage
test.
5. Remove the grounding foil after the test.
