Safety - Sonel MZC-320S User Manual

Measurement categories according to IEC 61010-2-030:

CAT II – concerns measurements performed in circuits directly connected to low voltage in-
stallations,

CAT III – concerns measurements performed in buildings installations,

CAT IV – concerns measurements performed at the source of low voltage installation.
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Safety

MZC-320S and MZC-330S meters are designed for performing check tests of protection against
electric shock in mains systems. The meters are used for making measurements and providing results
to determine safety of electrical installations. Therefore, in order to provide conditions for correct oper-
ation and accuracy of obtained results, the following recommendations must be observed:

Before you proceed to operate the meter, acquaint yourself thoroughly with this manual and ob-
serve the safety regulations and specifications provided by the producer.

Any application that differs from those specified in the manual may result in a damage to the de-
vice and constitute a source of danger for the user.

MZC-320S and MZC-330S meters must be operated only by appropriately qualified personnel with
relevant certificates authorizing the personnel to perform works on electric systems. Operating the
meter by unauthorized personnel may result in damage to the device and constitute a source of
danger for the user.

Using this manual does not exclude the need to comply with occupational health and safety regu-
lations and with other relevant fire regulations required during the performance of a particular type
of work. Before starting the work with the device in special environments, e.g. potentially fire-
risk/explosive environment, it is necessary to consult it with the person responsible for health and
safety.

It is unacceptable to operate:
 a damaged meter which is completely or partially out of order,
 a meter with damaged insulation,
 a meter stored for an excessive period of time in disadvantageous conditions (e.g. excessive
humidity). If the meter has been transferred from a cool to a warm environment with a high
level of relative humidity, do not start measurements until the meter is warmed up to the ambi-
ent temperature (approximately 30 minutes).
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MZC-320S ● MZC-330S – USER MANUAL