THYRISTOR ASSEMBLIES FOR MILES CITY MT

The Western Area Power Administration (WAPA) is seeking quotations for the direct replacement of thyristor assemblies for the Miles City HVDC Converter. The required assemblies include 24 single and 36 double thyristor assemblies, which must meet specific specifications. The assemblies must be suitable for phase control of HVDC valves, have a 125mm diameter, and be able to handle 5000V/5000A. The gate leads should be 14" long, and the heatsink profiles should match the existing ones for direct replacement. The document also provides detailed test conditions and limits for the thyristor assemblies. • The assemblies must meet specific voltage and current requirements. • The gate leads must be 14" long. • The heatsink profiles must match the existing ones for direct replacement. • The assemblies must pass various tests, including VDM/IDM, VRM/IRM, and IGT/VGT. • The document provides detailed test conditions and limits for the thyristor assemblies.