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Operation manual ISOTEST 4 S / 4 S
p l u s
Grounding
To enable safe porosity tests with high voltage, both the ISOTEST
®
test
equipment and the test object shall be grounded.
Independently of the grounding method, all electrical
connections should exhibit the lowest resistance possible.
The contact surfaces for attaching the clamping tongs should
be free from contamination and stain.
To prevent inadvertent pulling of the grounding plug from the
ISOTEST
®
test equipment, the stress relief attached to all
grounding cables should be hooked to the snap link at the bag.
When describing the grounding methods, basically both the
grounding of the ISOTEST
®
test equipment and the test object
described.
Depending on the test assignment, the following grounding methods can
be employed.
1. Direct grounding
Direct grounding is used when the grounding conductor can be
connected to a contact surface free from contamination and stain.
Required accessories:
Standard grounding cable with plug and clamping tongs Part number:
0174320000
(supplied)
Grounding cable, length of 15 m, with plug and clamping tongs Part
number: 0174200100
Application:
1. Connect the plug of the standard grounding cable to the grounding
receptacle of the ISOTEST
®
test equipment.
Connect the clamping tongs at the other end of the grounding cable
to the test object.
2. Connect a pair of clamping tongs of the second grounding cable (part
number 0174200100) to the test object.
Connect the second pair of clamping tongs to a ground terminal.
3. Turn the ISOTEST
®
test equipment on and perform the high-voltage
test.
