4
DranTech PMIT User’s Guide
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 Dranetz-BMI.
DranTech PMIT is manufactured and tested in accordance with
safety regulations IEC 61010–1:2001 / DIN EN 61010–1:2001 /
VDE 0411–1:2002. 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 instrument may only be used in power installations if the
electrical circuit is protected with a fuse or circuit breaker
with a maximum rating of 20 A, and the nominal voltage of
the installation does not exceed 600 V.
•
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
Ω
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
Ω
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
rechargeable batteries.
Warning!
The instrument may not be operated in explosive
atmospheres, or connected to intrinsically safe electrical
circuits.
