OPERATING MANUAL MMR-630 Revision 1.6
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1
Safety
The MMR-630 meter has been designed to realise measurements of resistance of different kinds
of connections (welded, soldered, contact connections) in electric installations. The results of the
measurements determine the safety conditions of the installation. Therefore, in order to provide condi-
tions for correct operation and the correctness of the obtained results, the following recommendations
must be observed:
Before you proceed to operate the meter, acquaint yourself thoroughly with the present manual
and observe the safety regulations and specifications determined by the producer.
The MMR-630 meter has been designed for the purpose of low-resistance measurements. Any
other application than those specified in the present manual may result in a damage to the device
and constitute a source of danger for the user.
In case of measurements of installations, sub-assemblies and devices under a dangerous volt-
age, the MMR-630 meters may solely be operated by qualified personnel who are properly author-
ised to work on electric installations. Operation of the meter realised by unauthorised 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 the following:
A damaged meter which is completely or partially out of order,
A meter with damaged cable 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 of a high
level of relative humidity, do not realise measurements until the meter has been
warmed up to the ambient temperature (approximately 30 minutes).
Before measurements may commence, make sure the cables are connected to the appropri-
ate measurement sockets.
Do not operate a meter with an open or incorrectly closed battery (accumulator) compartment
or power it from other sources than those specified in the present manual.
The meter’s inputs are electronically protected from power surge, as a result for example, of
accidental connection to the power supply source:
- for all input combinations
– up to 440VAC for 10 seconds.
Repairs may be realised solely by an authorised service point.
The device complies with the following norm: EN 61010-1
Note:
The manufacturer reserves the right to modify the appearance, accessories and
technical data of the meter.
Note:
An attempt to install drivers in 64-bit Windows 8 may result in displaying "In-
stallation failed" message.
Cause: Windows 8 by default blocks drivers without a digital signature.
Solution: Disable the driver signature enforcement in Windows.
Summary of Contents for MMR-630
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