23
DANGER
Risk of fatal injury from high voltage when secondary circuits of
power transformers are interrupted!
In transformer connected meters, the high voltage generated on an
interrupted secondary circuit of a power transformer can cause fatal
injuries, and will destroy the power transformer.
y
Before disconnecting the current paths, short-circuit the secondary
circuits of the power transformer at its testing terminals.
DANGER
Risk of fatal injury in case of contact with live parts!
y
Fuse-protect transformer connected meters in the voltage circuit
with a pre-fuse of ≤ 6 A in accordance with the applicable technical
regulations.
For meters with direct connection up to 80 A
DANGER
Improper installation endangers life and health, and can lead to
malfunctions and material damage!
y
Use an overcurrent protection device rated for a maximum of 65 A
or maximum 80 A upstream of a meter with direct connection.
y
The connecting paths must be fuse-protected as per the applicable
technical regulations and in accordance with the current specifica
-
tion on the meter’s name plate.
y
The installer bears responsibility for coordinating the rated values
and parameters of the supply-side overcurrent protection devices
with the maximum rated currents as well as the rated consumption
category of the meter system for directly connected meters.
y
The connection cables used to connect a meter must be selected to
match the maximum load of the meter and the installation environ-
ment in terms of type, cross section, voltage and temperature.
Summary of Contents for DIZ
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