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Gossen Metrawatt METRA HIT H-E CAR Manual

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4 GMC-I Messtechnik GmbH
1 Safety Features and Precautions
You have selected an instrument which provides you with
high levels of safety.
This instrument fulfills the requirements of the applicable
European 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 METRA HIT27 or METRA HIT H+E
CAR respectively is
manufactured and tested in accordance with safety
regulations IEC 61010–1:2010 / DIN 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 33 V (RMS)
may occur.
• Avoid working alone when taking measurements which
involve contact hazards. Be certain that a second person
is present.
Attention!
!
Maximum allowable voltage between any given connector
jack and earth is 600 V, category II.
Attention!
!
Nominal system voltage may not exceed 600 V.
Voltage measurements may only be performed with
the selector switch set to the V or the V~ position.
If the multimeter sockets are confused with the sense
sockets, the instrument may be damaged and the
operator may be subjected to danger!
Attention!
!
Contact hazard!
Dangerous voltages at the external jacks may be
looped through to the sense sockets during voltage
measurement. Therefore do not touch the sense
sockets.
• Be prepared for the occurrence of unexpected voltages
at devices under test (e.g. defective devices). For
example, capacitors may be dangerously charged.
• Make certain that the measurement cables are in flawless
condition, e.g. no damage to insulation, no interruptions
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, or with
an instrument with condensation moisture are not
permitted.
• Be absolutely certain that the measuring ranges are not
overloaded beyond their allowable capacities. Limit
values are listed in chapter 13 on page 22.
• The device may only be used for measurements of category
CAT II 600 V per IEC 61010-1.
CAT II 600 V is applicable for measurements in electrical
circuits with a nominal voltage not exceeding 600 V which are
directly connected to the low voltage system via mains sockets
or similar terminals.
• Maximum allowable interference voltage between the
jacks (7) and earth briefly amounts to 600 V
RMS
in all
selector switch positions in the event of an error. The fuse
blows at an interference voltage value of > 3 V in the m
range.
• Be prepared for the occurrence of unexpected voltages
at devices under test (e.g. defective devices, after testing
coil resistance at contactors etc.), for example,
capacitors may be dangerously charged. In the interest of
safety, always test for the absence of voltage first with
the selector switch in the V and V~ positions.
• In order to avoid damage to the instrument when
interference voltages are applied (within allowable limit
values), the m measuring circuit is equipped with an
F1.6A/1000 V fuse, which makes this measuring circuit
highly resistive if excessive current should occur in the
event of a fault for the duration of overloading.
• Do not plug the mains power battery charger into the
instrument if normal batteries have been installed instead of
storage batteries.
Warning!
The instrument may not be operated in explosive
atmospheres, or connected to intrinsically safe
electrical circuits.
… 4 …


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