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RARIC
Shaft current protection
• Sensitive protection for bearings of large rotating machines
• Operates for shaft currents larger than 0,3 - 0,8 A AC, depend-
ing on the diameter of the shaft
• Fundamental or third harmonic operating principle
• AC or DC powered, galvanically isolated
• Shaft current transformer with test winding
• Can be applied to shafts with diameters up to 2960 mm
• Settable time delay
• Trip relay with heavy duty contacts and indicating flag
• Test switch
User’s guide
1MRK 502 001-UEN
Revision: A
Issued January 2003
Data subject to change
without notice
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