Measurement Categories; Definitions Of The Measurement Categories - Würth 0715 58 770 Traducción Del Manual De Instrucciones De Servicio Original

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• Do not use the instrument in an explosive atmosphere or in the presence of flammable gases or fumes.
• Do not use the instrument on networks of which the voltage or category exceeds those mentioned.
• Do not exceed the rated maximum voltages and currents between terminals or with respect to earth.
• Do not use the instrument if it appears to be damaged, incomplete, or not properly closed.
• Before each use, check the condition of the insulation on the leads, housing, and accessories. Any element of
which the insulation is deteriorated (even partially) must be set aside for repair or scrapped.
• Use leads and accessories rated for voltages and categories at least equal to those of the instrument. If not,
an accessory of a lower category lowers the category of the combined Clamp + accessory to that of the
accessory.
• Observe the environmental conditions of use.
• Do not modify the instrument and do not replace components with „equivalents". Repairs and adjustments
must be done by approved qualified personnel.
• Replace the battery as soon as the
opening the battery compartment cover.
• Use personal protective equipment when conditions require.
• Keep your hands away from the unused terminals of the instrument.
• When handling the test probes, crocodile clips, and clamp ammeters, keep your fingers behind the physical
guard.
• As a safety measure, and to avoid repeated overloads on the inputs of the device, we recommend perform-
ing configuration operations only when the device is disconnected from all dangerous voltages.

Definitions of the measurement categories:

CAT II: Circuits directly connected to the low­voltage installation.
Example: power supply to household electrical appliances and portable tools.
CAT III: Power supply circuits in the installation of the building.
Example: distribution panel, circuit­breakers, fixed industrial machines or devices.
CAT IV: Circuits supplying the low­voltage installation of the building.
Example: power lines, meters, and protection devices.
10
symbol appears on the display unit. Disconnect all cords before

MEASUREMENT CATEGORIES

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