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ABB RELION REX640 - 4.2.5.7 Signals; MREFPTOC Input signals

ABB RELION REX640
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Figure 299: Measured current as a function of the rotor earth-fault resistance with
various field-to-earth capacitance values with the measuring circuit resistance Rm =
3.0 Ω, fn = 50 Hz. Only one coupling capacitor is used.
4.2.5.7 Signals
1MRS759142 F
Protection functions
REX640
Technical Manual
519

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