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Measuring circuit category cat iii, Measuring circuit cate- gory cat iv – Fluke Fiber Viewer FT140 User Manual

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References marked on instru-
ment or in instruction manual:

Warning of a potential danger, comply with

instruction manual.

Reference. Please use utmost attention.

Caution! Dangerous voltage. Danger of

electrical shock.

Continuous double or reinforced insulation

complies with category II IEC 61140.

Symbol for the marking of electrical and electronic

equipment (WEEE Directive 2002/96/EC).

Suitable for live working.

VDE-approved, built- in compliance with

the valid directives.

Conformity symbol, the instrument com-

plies with the valid directives. It complies

with the EMV Directive (89/336/EEC). It

also complies with the Low Voltage Directi-

ve (73/23/EEC).

Measuring Circuit
Category CAT III:

In addition to category II, the measuring circuit

category III includes electric equipment subject

to special demands with reference to safety

and availability.

Examples: House installations, protective

equipment, outlets, switches...

Measuring Circuit Cate-
gory CAT IV:

Electric equipment, for which lightning voltage

must also be taken into consideration, belongs

to category IV. This includes, e.g. the connecti-

on to overhead circuits, underground cables to

water pumps...

The instruction manual contains informati-

on and references, necessary for safe

operation and maintenance of the instru-

ment. Prior to using the instrument read

the instruction manual and comply with it

in all sections.

Failure to read the instruction manual or to

comply with the warnings and references

contained herein can result in serious bo-

dily injury or instrument damage.

Fluke T100/120/140
Introduction

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