Megger BMM80 Bedienungsanleitung
Megger
Multimeter
BMM80
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M BMM80 Series
Insulation Multimeters
User Guide
SAFETY
WARNINGS
• Safety Warnings and Precautions must be read and
understood before the instrument is used. They
must be
observed during use.
• The circuit under test must be de-energised and isolated
before connections are made except for voltage measurement.
• Circuit connections must not be touched during a test.
• After insulation tests, capacitive circuits must be allowed to
discharge
before disconnecting the test leads.
• The Live Circuit Warning and Automatic Discharge are additional
safety features and
should not be regarded as a substitute for
normal safe working practice.
• Replacement fuses must be of the correct type and rating.
Failure to fit the correctly rated fuse
will result in damage to the
instrument in the event of an overload.
• Test leads, including crocodile clips, must be in good order,
clean and have no broken or cracked insulation.
• Ensure that hands remain behind guards of probes/clips when
testing.
• U.K. Safety Authorities recommend the use of fused test leads
when measuring voltage on high energy systems.
NOTE
THE INSTRUMENTS MUST ONLY BE USED BY
SUITABLY TRAINED AND COMPETENT PERSONS
Users of this equipment and/or their employers are reminded that
Health and Safety Legislation require them to carry out valid risk
assessments of all electrical work so as to identify potential
sources of electrical danger and risk of electrical injury such as
from inadvertent short circuits. Where the assessments show that
the risk is significant then the use of fused test leads constructed
in accordance with the HSE guidance note GS38 ‘Electrical Test
Equipment for use by Electricians’ should be used.
Symbols used on the instruments are:
Caution, risk of electric shock.
Caution, refer to User Guide.
Equipment protected throughout by
Double Insulation (Class II).
Equipment complies with current EU Directives.
Equipment must not be connected
to installations >500V.
>500V
GENERAL DESCRIPTION
The Megger BMM80 Series instruments are battery powered
Insulation and Continuity testers, with a measurement
capability from 0,01Ω Continuity to 200GΩ Insulation.
Offering multi-voltage facilities, the instruments take full
advantage of microprocessor technology and feature a large
liquid crystal display combining digital and analogue readings.
The analogue display has the benefit of indicating trends and
fluctuations in readings, while the digital readout gives direct
accurate results. The display is also backlit giving clear visibility
even in low light conditions.
The BMM80 Series instruments have the unique capability of
being able to measure voltages down to a resolution of 0,1mV.
This gives the user the option to fit a wide variety of
transducers to further enhance the capabilities of the BMM
Series instruments, e.g. temperature or humidity measurement.
There is also a facility to measure capacitance on the BMM80,
this can be used in some types of telecommunications
applications for fault analysis.
A customised connector on the top of the instrument enables
the optional Megger SP6F Switched Probe to be used for two-
handed probe operation.
The 250V, 500V and 1000V ranges can be used to test
electrical installations in compliance with BS7671 (16th Edition
IEE Wiring Regulations) IEC364 and HD384, since each range
has a 1mA minimum test current at the minimum pass values
of insulation specified in these documents. The 100V range is
ideal for testing telecommunications equipment which would be
damaged by higher voltages. The 50V range is useful for
testing sensitive equipment, such as electronic components,
and computer peripherals.
Designed to IEC1010-1 the BMM80 Series are protected
against connection to a 500V Category III supply. The
instruments have a basic accuracy of ±2% at 20°C. The
instruments are waterproof and dustproof to IP54. This helps
maintain accuracy and ensures maximum reliability in harsh
environments.
OPERATION
Refer to Safety Warnings before using the instrument
Testing is automatically inhibited if:
• An external voltage >25V is present when
switched to any insulation range position.
• An external voltage >10V is present on all
other ranges (excluding
OFF/V/mV).
The external voltage is indicated on the display, on insulation
ranges an audible bleeper will sound if a test is attempted.
Produktspezifikationen
| Marke: | Megger |
| Kategorie: | Multimeter |
| Modell: | BMM80 |
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