The Thyristor Power Controller may only be operated in the sense of its intended
use; otherwise personal hazards, (e.g. electric shocks, burns) and hazards for
systems (e.g. system overload) may arise.
Residual hazards of the product
• Even in proper use, should a fault occur, it is possible that control of currents,
voltages and power is no longer performed in the load circuit by the Thyristor
In case of destruction of the power components (e.g. break-down or high resi-
stance), the following situations are possible: power interruption, half-wave opera-
tion, continuous power flow.
If such a situation occurs, then load voltages and currents are produced from the
power circuit. It must be ensured by system design that no uncontrolled large
currents, voltages or power occur.
Malfunction and the results
With malfunction it is possible that power, voltage or flow levels which are higher
than planned reach the Thyristor Power Controller or load. In principle, this can
lead to the Power Controller or load being damaged.
Thyristor Power Controllers are only to be transported in their original packaging
(protection against damage e.g. due to jolting, knocking, soiling).
If the Thyristor Power Controller is brought into the operation room from a cold envi-
ronment, moisture due to condensation can occur. Prior to it being commissioned,
the Thyristor Power Controller must be absolutely dry. Therefore, wait for a mini-
mum of two hours before commissioning.
Prior to connection, it must be ensured that the voltage information on the type
plate corresponds with the mains voltage.
• The electrical connection is carried out at the designated points with the required
cross section cable and the appropriate screw cross sections.