This kind of heaters, MoSi2 Element ( Kanthal Super Elements TM* ), increase resistivity sharply with temperature. The value of the resistance at ambient temperature is very low and increase its value up to 10 times as a function of temperature. To don’t oversize in current the Thyristor unit it’s necessary to limit the current to the load reducing the voltage with phase angle firing and current limit. When the resistance value reach a setted value are possible two types of working method that can be selected from HMI:- Phase Angle plus current limit all the time long Or- Phase Angle plus current limit when the resistance is cold and transfering to Delayed Triggering if load is coupled with transformer. CD Automation can drive this kind of elements with REVO CL and Multidrive 1ph Units.

MoSi2 Element 1PH Load

One Phase Thyristor Power Controller to drive MoSi2 Heating Element (Kanthal Super)
 

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  Revo_m_cl_tc_1ph-thyristor-unit  Multidrive-2-3PH-Power-Control
Product REVO CL Multidr.1PH
 LOAD
 Load Voltage  480-600V-690*V  480-600V-690**V
 Current Range
 10:700A 25:1600A
 INPUT
 10K Pot.
 4:20mA
 0:10V
 
FIRING  
 PHASE ANGLE + SOFT START > 2SEC + CURRENT LIMIT
 FEED BACK | CONTROL MODE
 I  Current
 OPTION  
 FUSE + FUSE HOLDER INT.   35:40A
>40A 
 cUL us  Pending
 COMUNICAZIONE / PROGRAM.    
 RS485 Modbus RTU  
 PROFIBUS + Ethernet Modbus TCP  
 Config. Keypad  
PC Win. Configurator  
 CD KP 48×96 or REVO KP  
 = Standard  
  = Option  
* 690V available
from 400 up to 700A
 
 ** 690V Multidr. available    from 850 up to 2700A  
 
 

 

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