Safety
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D000011142 en k – E65C CU-B1, B2, B4 – User Manual
© Gyr
2.3 Safety
regulations
The following safety regulations must be observed at all times:
Changing of the communication unit must only be made on meters not
under voltage.
The meter connections must not be under voltage during installation or
when opening. Contact with live parts is dangerous to life. The relevant
fuses should therefore be removed and kept in a safe place until the
work is completed, so that other persons cannot replace them unno-
ticed.
Local safety regulations must be observed. Installation of the meters
must be performed exclusively by technically qualified and suitably
trained personnel.
Secondary circuits of current transformers must be short-circuited (at
the test terminal block) without fail before opening. The high voltage
produced by the interrupted current transformer is dangerous to life
and destroys the transformer.
Transformers in medium or high voltage systems must be earthed on
one side or at the neutral point on the secondary side. Otherwise they
can be statically charged to a voltage which exceeds the insulation
strength of the meter and is also dangerous to life.
The meters must be held securely during installation. They can cause
injuries if dropped.
Meters which have fallen must not be installed, even if no damage is
apparent. They must be returned for testing to the service and repair
department responsible (or the manufacturer). Internal damage can
result in functional disorders or short-circuits.
The meters must on no account be cleaned with running water or with
high pressure devices. Water penetrating can cause short-circuits.
