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> Areva P633 differential protection device
Areva P633 differential protection device
The P633 differential protection device is designed
for the fast and selective shortcircuit protection of
transformers, motors and generators and of other
The P63x differential protection devices
have the following main functions:
_ Definite-time overcurrent protection (three stages,
phase-selective,separate measuring systems for phase
currents, negative-sequence current and residual current)
_ Inverse-time overcurrent protection (single-stage,
phase-selective, separate measuring systems for phase
currents, negative-sequence current and residual current)
_ Thermal overload protection, choice of relative
_ Over-/ underfrequency protection
_ Over-/ undervoltage protection (time-voltage protection)
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