Testboy TB-313 Mode D'emploi page 31

| In order to avoid an electrical shock hazard you must observe the speci-
fied precautionary measures when working with voltages greater than
120 V (60 V) DC or 50 V (25 V) eff AC. These values represent the
specified limits of safe-to-touch voltages in accordance with DIN VDE
(values given in brackets apply to medical or agricultural applications).
| Before taking each measurement, ensure that the test leads and the
measuring instrument are in a flawless condition.
| The test leads and test probes must only be handled using the isolated
grips. Avoid touching the tips of the test probes under all circumstances.
The test instrument must only be used for the specified measure-
ment range.
According to the standard EN 61010-1 the following measurement catego-
ries are defined:
Measurement Category CAT II
Measurements on circuits that are electrically connected directly to the net-
work, via plugs in the home, office and laboratory.
Measurement Category CAT III
Measurements on the building installations: Fixed consumer units, distributor
connection, equipment fitted permanently to the distributor.
Measurement Category CAT IV
Measurements at the source of the low voltage installation: Meter, primary
surge protection, main connection.
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Testboy TB-313
Operation
31