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The following currents and voltages are inputs to the multipurpose protection
function. They must all be expressed in true power system (primary) Amperes and
kilovolts.
1. Instantaneous values (samples) of currents & voltages from one three-phase
current and one three-phase voltage input.
2. Fundamental frequency phasors from one three-phase current and one three-
phase voltage input calculated by the pre-processing modules.
3. Sequence currents & voltages from one three-phase current and one three-phase
voltage input calculated by the pre-processing modules.
The multipurpose protection function:
1. Selects one current from the three-phase input system (see table
) for
internally measured current.
2. Selects one voltage from the three-phase input system (see table
internally measured voltage.
3. Selects one current from the three-phase input system (see table
) for
internally measured restraint current.
1MRK502052-UEN B
Section 11
Multipurpose protection
587
Technical manual
Содержание Relion REG670
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