Hioki FT6031 - Page 26

22
Measurement Workow
DANGER
• This product should only be connected to the
secondary side of a breaker, so the breaker can
prevent an accident if a short circuit occurs.
Connections should never be made to the primary
side of a breaker, because unrestricted current ow
could cause a serious accident if a short circuit
occurs.
• Connect the test lead to the instrument rst, and
then to the active lines to be measured. To avoid
electric shock and short circuits, do not short-
circuit two wires to be measured by bringing the
metal part of the test lead's clip into contact with
them. Never touch the metal end of the clip.
WARNING
To avoid electric shock, observe the following precautions.
• Prior to measurement, please make sure that the
earthing electrode has been disconnected from
the distribution system. The measurement cables
L9841, L9842-11, L9842-22, L9843-51 and L9843-52
are measurement cables with the maximum rated
voltage of 30 V (between input terminals and the
ground) and are designed to measure the earth
resistance of an earthing electrode disconnected
from the distribution system.
• Turn off all power before connecting cables and test
leads.
• Conrm that all connections of cables and test
leads are secure to the measurement terminals. The
increased resistance of loose connections can lead
to overheating and re.