MRG3-IU0 Generator Protection Device (MRG3I5U0D)
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Configuration
The MRG3-IU0 is a universal mains decoupling device that covers all protection functions which are required by utilities for the mains parallel operation of power stations such as:
over/and under voltage protection,
over/and under frequency protection,
extremely fast generator mains decoupling in case of vector surges or rate of change of frequency df/dt,
Independent (Definite) time over current relay,
dependent time over current relay with selectable characteristics, independent short circuit protection,
two-step protection for the residual voltage.
19“ racks – fully withdrawable
Door mounting – withdrawable and sealable
Panel mounting – fully withdrawable
Fault / disturbance recorder
Intuitive HMI
Display (of primary values)
Easy setting software – Smart view
Compact form factor
Protection of electrical (HV, MV) synchronous generators against:
Managing Overload by Load shedding by ROCOF, Underfrequency,…
Stator Earth Fault / insulation damages
Rotor Earth fault detection
Insulation damage due to overvoltage
Overfrequency, Underfrequency (over-/underspeed)
Vector surge protection against asynchrounous coming back of grid voltage after power outage (e.g. caused by auto reclosure)