ERP-1 –USER MANUAL
1 Safety
ERP-1 adapter is designed to adapt MRU meters (manufactured by Sonel SA) for the measure-
ments of earth resistance of various objects e.g. power pillars, using flexible clamps (Rogowski coil).
The adapter is designed to work with earth resistance meters that provide the user with a choice of
performing the measurement using 3-wire method with measurement clamps. In order to ensure cor-
rect operation, the following recommendations must be observed:
xBefore you proceed to operate the adapter, acquaint yourself thoroughly with this manual and ob-
serve the safety regulations and specifications provided by the producer.
xAny application that differs from those specified in the present manual may result in a damage to
the adapter and constitute a source of danger for the user.
xThe Adapter should be operated only by suitably qualified persons having the necessary permis-
sions to carry out measurements on electrical systems. Operating the Adapter by unauthorised
personnel may result in damage to the device and constitute a source of danger for the user.
xUsing 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.
xIt is unacceptable to operate the device when:
it is damaged and completely or partially out of order,
its cords and cables have damaged insulation,
it has been stored for an excessive period of time in disadvantageous conditions (e.g. exces-
sive humidity). After moving the device from a cool to a warm place with a high level of
relative humidity, do not start measurements until the device is warmed up to the ambi-
ent temperature (approximately 30 minutes).
xDo not operate the adapter with an open or incorrectly closed battery (accumulator) compartment
or power it from other sources than those specified in the present manual.
xRepairs may be performed only by an authorised service point.
xThe device meets the requirements of EN 61010-1.
xThe manufacturer reserves the right to introduce changes in the design, accessories
and technical data of the adapter.
x
ERP-1 Adapter is not a stand-
alone measuring device. This is an accessory de-
signed to work with earth resistance meters of MRU series man
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