1. Dynex
  2. TCR Valves Dynex Semiconductor, Lincoln, UK

TCR Valves

Thyristor Controlled Reactors (TCRs) are used, usually in combination with Fixed or Mechanically Switched Capacitors (FC or MSC) to provide Static VAR Compensation (SVC). This helps improve the quality of the mains voltage supply by compensating for large loads with poor power factors. Typical example applications include flicker reductions and power factor compensation of Electric Arc Furnaces in steel mills.


Dynex provide a complete range of water cooled SVC valve assemblies, which utilise the latest I2 thyristor technology for optimum efficiency. These are primarily designed for operation at 35kV and the range extends from 10MVAr up to 300MVAr and  there are a growing number of reference projects currently in operation for the entire range. These can be used in both single phase and three phase applications.


The Dynex range of TCRs has been designed with optimum performance and availability in mind. All the thyristor modules used in the TCR valves are matched to improve static and dynamic sharing  whilst N+1 redundancy is included as standard to ensure consistent availability of supply, even in the harshest of operating conditions.


3 PhaseSingle Phase
Rating 80MVar 100MVar 200MVar 300MVar 16MVar
Rated Voltage 35kV 35kV 35kV 35kV 13.8kV
Rated Current 800Arms 1000Arms 2000 Arms 3000Arms 400Arms
Rated Overload 125% (10s)
300% (0.2s)
125% (10s)
300% (0.2s)
125% (10s)
300% (0.2s)
125% (10s)
300% (0.2s)
125% (10s)
300% (0.2s)
Insulation Rating 70/170kV 70/170kV 70/170kV 70/170kV 38/95kV
Dimensions
(WxDxH)
1270x1140x3100 1270x1140x3100 1270x1500x2350 1270x1500x2680 870x1150x1763
Coolant Req.
(Glycol/Water – Max 40°C)
120 L/min
per phase
120 L/min
per phase
120 L/min
per phase
120 L/min
per phase
70 L/min
per phase
Weight 650kg 850kg 1000kg 1200kg 360kg


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Thyristor TCR Assembly