Design note of a 10,000A, 1,000Vdc solid state dump switch for the magnet test facility
This report describes the design of a 10,000A/1000Vdc dump switch for the superconducting magnet test program at Fermilab. The switch inserts a dump resistor in series with a charged superconducting magnet when a magnet quenches or other faults are detected. The dump resistor dissipates the majority of the magnetically stored energy after the dump switch has opened. The switch uses 6 parallel inverter type run SCR's which get commutated off via a dump SCR and stored energy in a dump capacitor. Switching time is less then 150 {times} 10{sup {minus}6} sec. All switch power components are water cooled and mounted in a 72 in. H {times} 36 in. W {times} 30 in. D steel enclosure. The controls have provisions for 8 dump command inputs, with a first fault latch. They also provide reference limit control resulting from SCR turn on failure or unacceptable dump resistor tap selection. Dump failure detection and 24 interlocks are provided. All controls are mounted in a relay rack. Quench detection is provided by the magnet test facility. Two 5000 A power supplies are operated in parallel to provide 10,000 Adc.
- Research Organization:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- DOE/ER
- DOE Contract Number:
- AC02-76CH03000
- OSTI ID:
- 6183033
- Report Number(s):
- FNAL-TM-1692; ON: DE91004695; TRN: 91-000777
- Country of Publication:
- United States
- Language:
- English
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