International Electrical Symbols; Definition Of Measurement Categories - AEMC 6608 User Manual

Phase rotation meter

Table of Contents

1.1 International Electrical Symbols

CAT I:

CAT II:

CAT III:

CAT IV:

Phase Rotation Meter Model 6608

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Instrument is protected by double or reinforced insulation.

CAUTION - DANGER! Read the User Manual.

Risk of electric shock. The voltage at the parts marked with this sym-

bol may be dangerous.

The CE marking guarantees conformity with European directives and

with regulations covering EMC.

The trash can with a line through it means that in the European

Union, the product must undergo selective disposal for the recycling

of electric and electronic material, in compliance with Directive WEEE

2002/96/EC.

Measurement category I corresponds to measurements

taken on circuits not directly connected to the network.

Measurement category II corresponds to measurements

taken on circuits directly connected to the installation.

Example: measurement for electrodomestic units,

portable tools and analogue devices

Measurement category III corresponds to measure-

ments on building installations.

Example: measurement on distribution panels, cabling,

etc.

Measurement category IV corresponds to measure-

ments taken at the source of low-voltage installations

Example: metering and measurements on overvoltage

protection devices.

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