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Earth resistance tester 7
General instructions
Introduction
This tester has been designed and tested according to IEC Publication
348, Safety Requirements for Electronic Measuring Apparatus IEC-1010
(EN 61010).
Follow all warnings to ensure safe operation.
Precautions and
safety measures
Read the following safety information carefully before attempting to
operate or service the meter.
Use the meter only as specified in this manual otherwise the protection
provided by the meter may be impaires.
Rated environmental conditions :
•
indoor use
•
Installation Category III 300 V
•
Pollution Degree : 2
•
Altitude up to 2000 m
•
Relative humidity 80 % max
•
Ambient temperature: 0 to 40°C
definition of
installation
categories
(cf. IEC 664-1)
CAT I
: CAT I circuits are protected by devices designed to minimize transient
overvoltages at a low level.
E.g.
: protected electronic circuits
CAT II
: CAT II circuits are domestic or similar equipment power supply circuits
that can include average value transient overvoltages.
E.g.
: power supply to domestic appliances and portable tools.
CAT III
: CAT III circuits are circuits for power equipment power supplies which
may include high transient overvoltages.
E.g.
: machine or industrial apparatus power supply.
CAT IV
: CAT IV circuits are circuits that can include very high transient
overvoltages.
E.g.
: energy inputs
International
electrical symbols
Meter protected throughout by double insulation
Warning ! Risk of electrical shock
Caution ! Refer to this manual before using the meter
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