Bulletin 20S SCR Bridge is a non-regenerative DC bus supply that supplies power to AC drives that have a common DC bus input. The supply converts incoming three-phase AC line voltage to a common DC bus voltage. You can configure this supply for stand-alone and master-slave applications.
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Overview
- Six-pulse, full-wave, three-phase SCR bridge rectifier unit
- Stand-alone and master-slave configurations (1000 A units only)
- Built-in AC line and DC bus fuses (400 A and 600 A units)
- Rectifier branch fuses, snubber circuit, and DC bus feedback fuses (1000 A units)
- Over-temperature sensor located in the heat sink
- RC snubber circuit for dampening and linearity of over-voltages
Specifications
Certifications
- CE marked for all applicable directives
- cULus
Certifications apply when product is marked. See our Product Certification site for Declarations of Conformity, certificates and other certification details.
Applications
Typical applications for the PowerFlex 20S Common Bus Power Supplies include:
- Paper-Making Machines, Finishing Winders, Calendars, Rereelers
- Metal-Rolling Mills, Slitters
- Winders, Coaters, Calendars
- Cranes
Drives Case Studies — View our case studies site to discover how customers have applied Allen-Bradley drives products in their applications.