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6 Settings
6.9 Economy circuit
48
It is not possible to change over to phase-angle control if S12 and S13 are
closed.
v Section 2.3 "Burst-firing operation for transformer loads and loads with a
high positive temperature coefficient TC (mixed operation)"
Two single-phase units can be used at any time to implement an "economy
circuit" in a 3-phase system.
The switch settings that are required for this, depending on the type of load
and circuit, can be found in the table.
V
The thyristor power units must always be dimensioned for the
phase-phase voltage, regardless of whether the load is wired in a
star or delta configuration.
It is vital to ensure that the roating electrical field is right-handed,
i.e. clockwise rotation.
Terminal V must be linked to phase L2 on both power units.
v Section 4.6 "Free-running economy circuit, purely resistive loads" and
Section 4.7 "Master-slave economy circuit, with resistive/inductive loads"
Power units 05.01
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