Testboy TV 222 Instrucciones De Empleo página 19

Operation
energise or de-energise circuits and electrical equipment in accordance with professional
working practices.
When the units are open, remember that some internal capacitors may still have life-
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threatening voltage potential even after they have been switched off.
If any faults or abnormalities are found, take the unit out of service and ensure that it cannot
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be used until it has been checked.
| If the unit is not to be used for a long period of time, remove the batteries and store the unit in
an environment that is not too humid or too hot.
Extreme caution is advised when working on uninsulated conductors and busbars. Touching
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these parts could result in an electric shock! Use suitable protective equipment for this
purpose!
Definition of the measurement categories
Measurement category II: Measurements on circuits that are electrically connected directly to the
low-voltage mains via plugs. Typical short-circuit current < 10 kA
Measurement category III: Measurements within the building installation (stationary consumers
with non-pluggable connection, distribution connection, permanently installed devices in the
distribution board).
Typical short-circuit current < 50 kA
Measurement category IV: Measurements at the source of the low-voltage installation (meter,
main connection, primary overcurrent protection). Typical short-circuit current >> 50 kA
To determine the measuring category for a combination of measuring cable and measuring
device, the lowest category of either the measuring cable or the measuring device always
applies.
When using this clamp meter, the user must observe all the usual safety rules:
| Protection against hazards caused by electric current.
Protection of the meter against misuse.
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For your own safety, only use the measuring heads supplied with the device. Before using the
device, check that it is in perfect condition.
Maintenance and cleaning
Clean the housing at regular intervals with a dry cloth without cleaning agents. Do not use
abrasives, scouring agents or solvents.
To avoid electric shocks, do not allow moisture to enter the housing.
Testboy TV 222
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