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Device

MRU4

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LineHPT
Voltage transformer inputs4
Binary inputs8
Output relays5
Watchdog relay1
Voltage protection [27/59]Yes
Residual voltage [59N]Yes
Phase balance [47]Yes
Frequency protection [81O/U]Yes
Frequency gradient [81]Yes
Vector surge / mains decoupling [78]Yes
Voltage transformer supervision [60FL]Yes
Reset / BlockingYes
Time DateYes
Parameter sets4
Event recorderYes
Fault recorder (none volatile)Yes
Disturbance recorderYes
Output relay matrixYes
Trip circuit resp.
control circuit supervision [74TC]		Yes
Trip- and auxiliary relays [86]Yes
Modbus RTU ProtocolOptional
IEC 60870-5-103Optional
Profibus DPOptional
Modbus (TCP)Optional
IRIG-B00XYes

All shown details without any guarantees! We reserve the right of changes without prior notice.
*Only the basic device structure is shown. Differences in detail are possible.