Safety Regulations; Radio Interference - Landis+Gyr E650 Series User Manual

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2.3

Safety Regulations

2.4

Radio interference


© Landis+Gyr AG
The following safety regulations must be observed at all times:

The conductors to which the meter will be connected must not be
under voltage during installation or exchange of the meter. Contact
with live parts is dangerous to life. The relevant supply fuses should
therefore be removed and kept in a safe place until the work is com-
pleted, so that other persons cannot replace them unnoticed.

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 an interrupted current transformer circuit 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 been dropped 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 penetration can cause short-circuits.
Possible radio interference in residential environments
This meter is normally a class B product. In combination with some commu-
nication modules it can become a Class A product. In a domestic environ-
ment, this may then cause radio interference, in which case the user may
be required to take adequate measures.
D000030110 d – E650 Series 3 (ZMD400AT/CT, ZFD400AT/CT) – User Manual
Safety