Efficient 5,2 kV thyristors

3 September 2008 Power Electronics / Power Management

Westcode has announced further additions to its range of medium voltage thyristors. The new 5,2 kV device has a nominal RMS current rating of 1100 A and is encapsulated in a 34 mm pole face hermetic pressure contact package.

These thyristors are manufactured using advanced alloy-free processing techniques to give device characteristics ideal for medium voltage applications.

The new devices incorporate the Westcode proven advanced processing technology of its medium voltage thyristor family, such as distributed gate architecture for improved turn-on characteristics and enhanced di/dt capability, improved dynamic characteristics with reduced tq and recovery time. These properties make the thyristors ideally suited for medium voltage applications, in particular where series operation of the devices is required.

The devices are available in three voltage classes and two package options: K0566LC450, K0566LC480 and K0566LC520, which are rated at 4,5 kV, 4,8kV and 5,2 kV respectively and housed in a 26 mm thick package; K0566LG450, K0566LG480 and K0566LG520, which are rated at 4,5 kV, 4,8kV and 5,2 kV respectively and housed in a 35 mm thick package.

Typical applications include DC drives, soft-starts, utility applications such as HVDC, static VAR compensators, excitation and transfer switches.

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