Operation Manual

6 GMC-I Messtechnik GmbH
Repair, replacement of parts and calibration
When opening the meter, live parts may be exposed. Therefore, the
meter must be disconnected from all voltage sources prior to opening
its case for repair, replacement of parts or calibration. If repair or cali-
bration can then not be avoided unless the meter is open and live, this
work must only be performed by a qualified person who understands
the danger involved.
Faults and extraordinary stress
When it must be assumed that safe operation is no longer possible,
take the meter out of service and secure it against accidental use. It
must be assumed that safe operation is no longer possible,
• when the meter shows obvious signs of damage,
• when the meter no longer functions correctly,
• after prolonged storage under adverse conditions.
2 Application
The electronic multi-function power meter MAVOWATT 4 permits
direct power measurements on DC systems as well as active power
measurements on single-phase AC systems and on three-wire, three-
phase systems of balanced load.
In addition, the MAVOWATT 4 power meter can be used to directly
measure current and voltage on DC and single-phase AC systems.
Under consideration of correction factors, it is also possible to use the
meter for reactive power measurements on three-phase systems of
balanced load and also for interlinked voltages.
The MAVOWATT 4 power meter is particularly suited for industrial
measurements, for service and mounting. Also in the laboratory and in
the test room, diversified measuring tasks can be solved quickly and
without problems.