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Gossen Metrawatt METRAHIT 30M Manual

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GMC-I Messtechnik GmbH 5
GB
1 Safety Features and Precautions
You have selected an instrument which provides you with a
high level of safety
.
This instrument fulfills the requirements of the applicable Euro-
pean and national EC guidelines. We confirm this with the CE
marking. The relevant declaration of conformity can be
obtained from GMC-I Messtechnik GmbH.
The multimeter has been manufactured and tested in
accordance with safety regulations
IEC/EN 61010–1:2010/
VDE 0411–1:2011. When used for its intended purpose,
safety of the operator, as well as that of the instrument, is
assured. Their safety is however not guaranteed, if the
instrument is used improperly or handled carelessly
.
In order to maintain flawless technical safety conditions, and to
assure safe use, it is imperative that you read the operating
instructions thoroughly and carefully before placing your instrument
into service, and that you follow all instructions contained therein.
Observe the following safety precautions:
• The instrument may only be operated by persons who
are capable of recognizing contact hazards and taking
the appropriate safety precautions. Contact hazards
exist anywhere, where voltages of greater than 30 V may
occur (RMS value
).
• Avoid working alone when taking measurements which
involve contact hazards. Be certain that a second person
is present
.
• The maximum allowable voltage between the jacks (8) and earth is
600 V CAT II. Overload capacities are listed in chapter 15.
• Be prepared for the occurrence of unexpected voltages
at devices under test (e.g. defective devices). For exam-
ple, capacitors may be dangerously charged
.
• Make certain that the measurement cables are in
flawless condition, e.g. no damage to insulation, no inter-
ruptions in cables or plugs etc
.
• No measurements may be made with this instrument in
electrical circuits with corona discharge (high-voltage)
.
• Special care is required when measurements are made
in HF electrical circuits. Dangerous pulsating voltages
may be present
.
• Measurements under moist ambient conditions are not
permissible
.
• Be absolutely certain that the measuring ranges are not
overloaded beyond their allowable capacities. Limit val-
ues can be found in the “Measuring Ranges” table
in
chapter 15 „Characteristic Values“.
• The current measuring ranges are protected by an internal
250 mA fusible link. A defective fuse can only be replaced by
GMC-I Service GmbH service personnel. The maximum per-
missible voltage for the measuring current circuit is
600 V AC/DC in the „mA“ ranges.
• The instrument may not be used in power installations.
Repair, Parts Replacement and Balancing
When the instrument is opened, voltage conducting parts
may be exposed. The instrument must be disconnected
from the measuring circuit for repair, replacement of parts
or balancing. If repair or balancing of a live, open instru-
ment is required, this may only be carried out by trained
personnel who are familiar with the dangers involved
.
… 5 …


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