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Signal transmission
These signals are each transmitted by
two volt-free changeover contacts with
a maximum breaking capacity of 5A
250V.
◗ "overload" signal indicates that an
overload has taken place (Pload >
Pnominal in kVA);
◗ "rectifier/charger function fault"
signal indicates that:
◗◗ a fault has taken place in the
rectifier/charger module,
◗◗ Mains 1 input switch Q1 is open;
◗ "inverter function fault" signal
indicates that a fault has taken place in
the inverter module;
◗ "transfer to inverter fault" signal
indicates that the load transfer
conditions from Mains 2 to the inverter
are incorrect;
◗ "transfer to Mains 2 fault" signal
indicates that the transfer to Mains 2
conditions (voltage, frequency or
phase) are incorrect and a forced
transfer will result in a 0.8 second
interruption in the supply of power to
the load;
◗ "rectifier/charger on" signal
indicates the status of the module.
Note:
A Static Switch Cubicle receives only
the following signals:
◗◗ overload,
◗◗ transfer to inverter fault,
◗◗ transfer to Mains 2 fault.
Environment information (cont.)
