Branch Feeder Monitor 136_Installation Operation and Manual 3
WARNING
Read the instructions in this manual before performing installation and take note of the following
precautions:
BFM136 is intended for measurements performed in building installations, relating to measurement
category III (UL61010-1, 6.7.4).
Ensure that all incoming AC power and other power sources are turned OFF before performing any
work on the instrument. Failure to do so may result in serious or even fatal injury and/or equipment
damage.
Before connecting the instrument to the power source, check the labels at the front of the instrument
to ensure that your instrument is equipped with the appropriate rating input voltages and currents.
Under no circumstances should the instrument be connected to a power source if it is damaged.
To prevent potential fire or shock hazard, do not expose the instrument to rain or moisture.
While installing HACS to the secondary of an external third party current transformer, the external
current transformer secondary output must never be allowed to be open circuit when the primary is
energized. An open circuit can cause high voltages, possibly resulting in equipment damage, fire
and even serious or fatal injury. Ensure that the current transformer wiring is secured using an
external strain relief to reduce mechanical strain on the screw terminals, if necessary.
Only qualified personnel familiar with the instrument and its associated electrical equipment must
perform setup procedures.
Do not open the instrument under any circumstances when it is connected to a power source.
Do not use the instrument for primary protection functions where failure of the device can cause fire,
injury or death. The instrument can only be used for secondary protection if needed.
Read this manual thoroughly before connecting the device to the current carrying circuits. During operation
of the device, hazardous voltages are present on input terminals. Failure to observe precautions can result
in serious or even fatal injury or damage to equipment.
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