Protection set

Main features

• three phase measuring circuit
• current value of measured currents
• real time clock
• register of 33 or 36 unique events with capability to write up to 300 events
• parameters of last disturbance recorder, sum of tripped currents counter
• two binary inputs for external protection with possibility to block relay operation
• generating of trip signal
• LCD display and buttons set in order to operation of relay
• optical indicating (with LED diodes) of pick-ups, trips, measuring circuits continuity, exceeding of permissible of tripped currents sum and proper operation of relay
• 5 programmable relay outputs (S1-S5)
• Relay output for signalling power supply module failure or lack of auxilliary voltage
• RS-485 port for remote control with MODBUS protocol (optional)
• self test of proper operation of relay
• relay enclosure gives possibility to mount on 35 mm rail, surface mount or flush mount

The energising values are currents (IL1, IL2, IL3, and I0). On the basis of three phase currents the negative-sequence component I2 is calulated, which indicates the current unbalance. If any of measured values exceeds setting value (set by user), the relay operates in a manner dependind on configuration.

With optional communication interface, the measured currents, binary inputs or outputs, register logs are provided. The PC software provided with relay allows to set the relay, confirm generated signals, graphical display of measured values and browse the register records.

TECHNICAL DATA