DocumentCode
846331
Title
Magnet Protection Using ZNR Surge Suppressors
Author
Pfeffer, Howard ; Wolff, Daniel A.
Volume
26
Issue
3
fYear
1979
fDate
6/1/1979 12:00:00 AM
Firstpage
3934
Lastpage
3935
Abstract
In the Fermilab Main Ring power supply system, we have added ZNR type (zinc oxide nonlinear resistor) suppressors to each power supply terminal to limit the magnet voltage-to-ground to 2.1 kV. The ZNR´s conduct 50 A at the 2.1 kV clipping voltage, and leak less than 1 mA at the 1.5 kV maximum operating voltage. Their repetitive surge rating is 1.4 kJ. Their main advantage, in comparison to spark gaps, is that the ZNR´s do not break down and cause transients and high voltages at neighboring points on the magnet bus.
Keywords
Circuit faults; Clamps; Impedance; Power supplies; Power system protection; Resistors; Spark gaps; Surge protection; Voltage; Zinc oxide;
fLanguage
English
Journal_Title
Nuclear Science, IEEE Transactions on
Publisher
ieee
ISSN
0018-9499
Type
jour
DOI
10.1109/TNS.1979.4330654
Filename
4330654
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