ELABO G1-1, Operating Instructions Manual

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3. MAKEREADY
3.4.1 Requirements for connecting lines to the test object
Under the requirements (current, voltage, mechanical stress, handling, et
cetera), must be used appropriate and certificated connecting cables and
contacting devices.
Use high quality cables: Insulation material with: - a low dielectric con-
stant; -low dielectric loss factor; - a high insulation resistance. In addition,
an effectual voltage strength, is necessary.
Voltage strength: The connecting lines must be certificated and tested,
for the maximum voltage of the test device.
Current:
The connecting lines must be certificated and tested, for the
maximum current of the test device. Have attention for con ti nous test.
Mechanical stress: The connecting lines must be constructed for the
mechanical stress, at the test place. If necessary, - place the cables in
safety positions; - use a cable protective tube; - or use other approbate
precautions .
Handling: The connecting lines must be well to handling. Use elastic,
fine-wire cables, with sufficient lengths. Have attention for the weight of
the cables.
Have attention for other risks on the test place eg. humidity, hotness,
chemical hazard ... .
3.4.2 Cable length
The length of the measurement lines must be constructed, as long as
necessary, however as short as possible. Long connecting lines exhibit
possibly a relatively high reactive part. It has a substantial influence on
the high voltage measurement, in the small measuring range (special
with devices ≤ 10 mA). A similar case is valid for the insulation resistance
measurement, in the range >= 100 MOhm (only for DC-dervices).
Fig. 3.5: Principle of connection with option E09 (LEMO socket - only
DC-tester).
eg. G1-1A E09
X3.1
X3.3
X3.2
X3.4
HV/ISO
mains plug X1
test object
sense +
sense -
Full-electronic G1-1 HV DC-Tester