Explanation Of Symbols And Indications - Conrad Voltcraft VC-5080 Mode D'emploi

2. Explanation of symbols and indications

Please follow the important information in these operating instructions indicated by the symbol with the
exclamation mark in the triangle.
A lightning symbol in the triangle warns against electric shock or impairing the electronic safety of the
device.
The arrow symbol indicates special tips and information about operation.
This device is CE compliant and fulfills all applicable European guidelines.
Protection class 2 (double or reinforced insulation, protective insulation).
CAT I Measuring category I for measurements on electric and electronic devices, which are not directly supplied
with mains voltage(e.g. battery operated devices, protective extra low voltage, signal and control voltages
etc.)
CAT II
Measuring category II for measurements at electric and electronic devices, which are directly supplied with
mains voltage via a power plug. This category also includes all smaller categories (e.g. CAT I for measuring
signal and control voltages).
CAT III
Measuring category III for measurements in the building installation (e.g. power plugs or sub-distributors).
This category includes all lower categories (i.e. CAT II for measurements on electrical devices). Measure-
ment operation in CAT III is permissible only using test leads with a maximum exposed contact length of 4
mm or test leads with protective caps.
CAT IV
Measuring category IV for measurements at the source of the low voltage installation (e.g. main distributor,
house interconnection points of the energy supplier etc.) and outdoors (e.g. work on earth cables, overhead
lines etc.). This category includes all lower categories. Measurement operation in CAT IV is permissible
only using test leads with a maximum exposed contact length of 4 mm or test leads with protective caps.
Earthing potential
28