Explanation Of Symbols - VOLTCRAFT VC-340 Operating Instructions Manual

5. EXPLANATION OF SYMBOLS

An exclamation mark in a triangle shows important notes in these op-
erating instructions that must be strictly observed.
The triangle containing a lightning symbol warns of danger of electri-
cal shock or impairment of the electrical safety of the device.
A lightning symbol in the square permits current measurement on un-
insulated, dangerously active conductors and warns of the possible
dangers. Personal protection equipment must be worn.
The arrow symbol indicates that special advice and notes on operation are
provided.
This device is CE-compliance and meets the applicable European di-
rectives.
Protection class 2 (double or reinforced insulation, protective insulation).
CAT I
Measuring category I for measurements at electrical and electronic
devices that are not directly supplied with mains voltage (e.g. battery-
powered devices, protective low voltages, signal and control voltages,
etc.)
CAT II Measuring category II for measurements at electrical and electronic
devices connected to the mains supply directly with a mains plug. This
category also covers all lower categories (e.g. CAT I for measuring
signal and control voltages).
CAT III
Measuring category III for measuring in building installation (e.g. out-
lets or sub-distribution). This category also covers all lower categories
(e.g. CAT II for measuring electronic devices).
Earth potential
Read the operating instructions carefully.
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