TDK-EPC has extended its range of EPCOS thyristor modules for dynamic power factor correction (PFC). The new TSM-LC-I module now also allows single-phase PFC of networks with rated voltages from 230 to 525 V a.c.
Depending on the voltage, the new module is designed for reactive powers of between 10 and 22 kVAR. 110 V a.c. versions are available upon request.
The module is characterised by very fast switching times of only 5 ms. As switching takes place in the zero transition of the current, the switching operations do not affect the grid. This also extends the service life of the capacitors. The new thyristor module continuously monitors the power line voltage and capacitor temperature. Possible capacitor failures are also recorded. Thanks to the thyristors, the module creates no switching noise and requires no maintenance.
The TSM-LC-I allows capacitive loads to be switched between L-L or L-N. Capacitors can be switched in three-phase networks by means of cascading. The thyristor module can be used in tuned and detuned applications and is characterised by its compact dimensions and low weight.
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