TESTBOY TB 313 Bedienungsanleitung Seite 26

Operation
CAUTION!
Use only the enclosed safety measurement leads or
equivalent measurement leads that meet the correct
measuring category CAT III 600 V.
| In order to avoid an electrical shock hazard you must observe the
specified 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 accord-
ance 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 iso-
lated grips. Avoid touching the tips of the test probes under all cir-
cumstances.
The test instrument must only be used for the specified meas-
urement range.
According to the standard EN 61010-1 the following measurement cat-
egories are defined:
Measurement Category CAT II
Measurements on circuits that are electrically connected directly to the
network, via plugs in the home, office and laboratory.
Measurement Category CAT III
Measurements on the building installations: Fixed consumer units, dis-
tributor connection, equipment fitted permanently to the distributor.
Measurement Category CAT IV
Measurements at the source of the low voltage installation: Meter, pri-
mary surge protection, main connection.
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Testboy TB 313