ABB RELION 620 Series Technical Manual page 451
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Also See for RELION 620 Series:
- Technical manual (1224 pages) ,
- Operation manual (152 pages) ,
- Applications manual (90 pages)
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1MRS757644 F
620 series
Technical Manual
GUID-42F3FB0E-D0A0-4363-A00C-D7365DE25ACE V1 EN
Figure 223:
Measured current as a function of the rotor earth-fault resistance with
various field-to-earth capacitance values with the measuring circuit
resistance R
used.
= 3.0 Ω, f
= 50 Hz. Only one coupling capacitor is
m
n
Section 4
Protection functions
445
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