Modular two thyristor block for welding machines type A2Q
  • Modular two thyristor block for welding machines type A2Q

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Modular two thyristor block for welding machines type A2Q

Modular two thyristor block for welding machines type A2Q

There is no technical problem with ignitron fuses exchange in welding machines. If we consider electrical connections, the thyristor connector needs only a system for thyristor triggering impulse conditioning. Conditioning systems is shown on diagram 1.

Module block typeRange VDRM
[V]
ITSM
[A]
I2t
[A2s]
IGT
[mA]
A2Q6W - 125 - ... 1200-2200 3000 45000 150
A2Q6W - 200 - ... 1200-2200 3600 65000  
A2Q6W - 300 - ... 1200-1600 5000 125000  
A2Q7W - 350 - ... 1200-2200 6300 200000 300
A2Q7W - 450 - ... 1200-2200 7600 290000  
A2Q7W - 550 - ... 1200-1800 9100 290000  


Connection table

Block typeConnection scheme
A2Q.W  


Two thyristor block
„6" - thyristor thickness. 15 mm
„7" - thyristor thickness. 26 mm


Drawing. 1

Application of two thyristor block as an exchange for ignitrone connector in welding machines. 
a) System with ignitrone,
b) System with thyristor block,
c) Conditioning circuit



Conditioning circuit
 

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Modular two thyristor block for welding machines type A2Q

There is no technical problem with ignitron fuses exchange in welding machines. If we consider electrical connections, the thyristor connector needs only a system for thyristor triggering impulse conditioning. Conditioning systems is shown on diagram 1.

Module block typeRange VDRM
[V]
ITSM
[A]
I2t
[A2s]
IGT
[mA]
A2Q6W - 125 - ... 1200-2200 3000 45000 150
A2Q6W - 200 - ... 1200-2200 3600 65000  
A2Q6W - 300 - ... 1200-1600 5000 125000  
A2Q7W - 350 - ... 1200-2200 6300 200000 300
A2Q7W - 450 - ... 1200-2200 7600 290000  
A2Q7W - 550 - ... 1200-1800 9100 290000  


Connection table

Block typeConnection scheme
A2Q.W  


Two thyristor block
„6" - thyristor thickness. 15 mm
„7" - thyristor thickness. 26 mm


Drawing. 1

Application of two thyristor block as an exchange for ignitrone connector in welding machines. 
a) System with ignitrone,
b) System with thyristor block,
c) Conditioning circuit



Conditioning circuit