6.1 Basic steps when installing the monitor
–
choice of type of current sensors
–
checking the agreement between the serial number of MEg30 and those of cur-
rent sensors
–
choice of the range of current measurement
–
installation of current sensors in a correct direction
–
installation of contact elements on voltage measuring cables
–
installation of a common conductor and then of measuring conductors
–
checking the lighting of the LED diode OPERATION (PROVOZ) and of LEDs
U1, U2 and U3
–
communication connection of MEg30 with the notebook (program Control of
PQ monitor)
–
checking the correct installation and the ranges of measurement by means of the
program
The utilization of the PQ monitor in version MEg30 in another way than in
that for which it is intended may result in impairing the protection provided
by the equipment.
7. Demands on maintenance
The MEg30 monitor has no requirements on forced ventilation, it contains no mov-
able control elements and – beside the usual cleaning of its surface – it has no special
demands on maintenance. Soft materials and non-aggressive solutions, preferably
water with detergent, shall be used for cleaning the surface.
Preventive inspection of portable PQ monitors in version MEg30 includes:
–
checking the undamaged state of insulation of measuring conductors, of alli-
gator clips, current sensors and temperature sensors,
–
checking the legibility of the marking of measuring elements,
–
checking the undamaged mechanical state of the monitor unit and of all mea-
suring accessories,
–
checking whether water has not got into the monitor or into its accessories.
It is recommended to carry out preventive inspections before each installing – not
later than after every three months. The periodicity of checking the accuracy of mea-
16
PQ monitor – MEg30, MEg31, MEg32, MEg33
