L1
L2
Thyristor
Load
3. Introduction
A thyristor unit is semiconductor device which acts as a switch formed by two thyristors in ant parallel.
To switch on the alternating current the input signal will be on and the thyristor will switch off at first Zero Crossing
voltage with no input signal.
The benefits of thyristor units compared with electromechanical contactors are numerous: no moving parts, no
maintenance and capacity to switch very fast. Thyristors are the only solution to control transformers and special
loads that change resistance with temperature and with age.
3.1. Advantages compared with analog thyristor unit
Communication RS485 is a standard feature of Relay C. this allows the use of many information like: current, power,
load state and all the parameters for diagnostic and configuration. Ulterior advantages of the digital system vs the
analogical is the flexibility and the possibility of implement special characteristics without change the hardware.
Several strategies can be implemented and selected through the configuration parameters.
With the software Thyristor Configurator, you can have access to the configuration parameters.
To connect the Thyristor unit to the computer use a micro USB cable.
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