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1MRS 755310
Feeder Protection Relay
Technical Reference Manual
• Four accurate current inputs
• User-selectable rated frequency 50/60 Hz
• Three normally open power output contacts
• Two change-over signal output contacts and three additional change-over signal
output contacts on the optional I/O module
• Output contact functions freely configurable for desired operation
• Two galvanically isolated digital inputs and three additional galvanically isolated
digital inputs on the optional I/O module
• Disturbance recorder
• recording time up to 80 seconds
• triggering by one or several internal or digital input signals
• records four analogue channels and up to eight user-selectable digital channels
• adjustable sampling rate
• Non-volatile memory for
• up to 100 event codes with time stamp
• setting values
• disturbance recorder data
• recorded data of the five last events with time stamp
• number of AR shots and starts/trips for protection stages
• operation indication messages and LEDs showing the status at the moment of
power failure
• HMI with an alphanumeric LCD and manoeuvring buttons
• eight programmable LEDs
• Operation indication messages displayed in either the IEC or ANSI mode
• Multi-language support
• User-selectable password protection for the HMI
• Display of primary current values
• Demand values
• All settings can be modified with a PC
• Optical front communication connection: wirelessly or via cable
• Optional rear communication module with plastic fibre-optic, combined
fibre-optic (plastic and glass) or RS-485 connection for system communication
using the SPA-bus, IEC 60870-5-103 or Modbus (RTU and ASCII)
communication protocol
• Optional DNP 3.0 rear communication module with RS-485 connection for
system communication using the DNP 3.0 communication protocol.
• Battery back-up for real-time clock
REF 610
7
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