Safety information
page 22
ELTROPLAN-REVCON
Line and contact resistances
The values of current carrying capacity of conductors refer to the most often
used copper conductors. Concerning to it's higher specific resistance
aluminium conductors must have greater dimensions.
Regardless of which conducting materials is used, the contact terminals of the
conductors have to be low resistive and their number has to be reduced to the
necessary minimum.
Too much or too high resistive terminals may result in a unsafe voltage magni-
fication during the power feedback operation.
Figure 2.6.4
M
FU
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U
∆
U
∆
U
∆
U
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I
Supplying
network
REVCON
Proceeding from a stable network with e.g. 400V nominal voltage and a back-
ward current of 80A, at a bad made terminal of 100mW a voltage of 8V is
dropped (A good made terminal has got a resistance of ca 1 mW.). During
backfeed operation at seven serial terminals at the net switch there results an
voltage of 456V.
