6
1 Prologue
In this manual, all design variants of the ITZ meter are described. Please note, that
the meters can be designed differently regarding for example configuration, interfaces,
in-/outputs etc. It is therefore possible that meter features are described in this manual
which do not apply to the meter(s) used by you.
1.1 Safety tips
The meters are to be used exclusively for measuring electrical energy and must only
be operated within the specified technical data (see nameplate).
When installing or changing the meter the conductor to which the meter is connected
must be de-energised. Only the intended screw terminals may be used for this.
Contact of parts under voltage is extremely dangerous. Therefore the relevant back-up
fuse is to be removed and stored so that other people cannot insert this unnoticed.
Before opening the meter the secondary circuit to the current transformer must be short
circuited. The high voltage on the current transformer is extremely dangerous and
destroys the current transformer.
With incorrect meter installation the S0-inputs can lead to line voltage.
Attention: Danger!
The local standards, guidelines, regulations and instructions are to be obeyed.
Only authorised personnel are permitted to install the electricity meters.
1.2 Maintenance- and guarantee tips
The meter is maintenance-free. With damages (e.g. due to transportation, storing) no
repairs may be carried out independently. As soon as the meter is opened, the
guarantee claims cease. The same applies in case the defect can be traced back to
external influences (e.g. lightning, water, fire, extreme temperatures and weather
conditions, improper or negligent use or treatment).
