VOLTCRAFT VC-20 Bedienungsanleitung Seite 34

The triangle containing a lightning symbol warns of dan-
ger of an electric shock or of the impairment of the elec-
trical safety of the device.
The "hand" symbol indicates special information and
advice on operation of the device.
This product has been CE-tested and meets the neces-
sary European guidelines.
Insulation class 2 (double or reinforced insulation)
CAT II Measuring category II for electric and electronic devices
that receive current through a power plug This category
includes all smaller categories (for example CAT I for the
measurement of signal and driving current). Measure-
ment operation without a cover plug on the test prods is
permissible.
CAT III Measuring category III for measurements in construc-
tion installations (for example power plugs or distribu-
tors). This category includes all smaller categories (for
example CAT II for the measurement of electrical equip-
ment). Measurement operation is only permitted with a
cover plug on the test prods.
CAT IV Measuring category IV for measuring at the source of
low voltage installations (for example, main distributors,
house transfer stations from the electrical supplier, etc.).
This category includes all smaller categories. Measure-
ment operation is only permitted with a cover plug on
the test prods.
Ground potential
34