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Safety measures
•
Correct functionality of the instrument must be verified prior to any use.
•
Attention must be paid to proper condition of the test leads,
measurement accessories and measurement instrument itself.
•
Test leads and measurement accessories may only be touched on
protected areas.
•
The instrument may be used within specified measurement ranges
•
During measurement of earth bond and insulation resistance as well as
during High-voltage test, the unit under test must be voltage-free and
disconnected from mains voltage. In case of doubt, verify the voltage
state by using a voltage
•
The instrument is protected against overload up to 440 Veff AC.
• Measurement input of the
to max. 440 V AC, pay also attention to overvoltage category CAT IV /
300 V, CAT III / 440 V!
•
Measurement function selector must be set to required position prior to
connecting test probes to the unit under test.
•
Test leads must always be removed from the tested object before
selecting a new function or another measurement range.
• Be aware
that during measurement of earth bond resistance, contact
resistances at the place of measurement affects the measurement result.
Ensure good contact between the test probe (or crocodile clip) and the
unit under test.
•
Results of earth bond resistance measurements may be affected by
impedances of additional operating current circuits connected in parallel
or by equalizing currents.
•
In the event that many loop impedance measurements are performed
with only short breaks in between, the internal protection against over
temperature will respond and the display "HOT, WAIT!" will appear.
Next measurement cannot start until the instrument is cooled down
(approx. 5 minutes). This protects the instrument against damage.
WARNING
Touching of conductive probes is prohibited at all times.
WARNING
tester.
Machinery-Tester MT 204-S may be connected
15
only.
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