Protection set

Main features

• 4 measuring inputs (IL1, IL2, IL3, I0)
• Different types and versions depending on relay configutarion
• Measurement of currents and their phase shifts
• Real time clock
• Event recorder with capacity up to 500 records
• Last disturbance parameters recorder
• Samples or magnitudes of disturbance and logic states recorder
• Tripped currents counter
• Two binary inputs for cooperation with external protection purposes, possibility to be used as blocking inputs
• Trip pulse
• alphanumeric LCD display (2×16) and six buttons enabling operation of the relay
• visual indication (by LED diodes) of pick-ups and trips, exceeding of counters or proper operation of relay
• 7 programmable relay outputs (S1-S7)
• RS-485 port for communication with PC computer or supervision and control system (MODBUS-RTU protocol)
• self-test system of proper operation of relay control
• enclosure construction enables three types of mounting: 35 mm rail, surface mount or flush mount

The energising values are input current: IL1, IL2, IL3 and I₀. On the basis of measured currents, the negative-sequence current I2 is calculated, which is the measure of current unbalance. Exceeding of any set threshold value causes the reaction of the relay according to the configuration. Communication interface provides following data: current measured and calculated values of voltages and their phase shifts, current inputs and outputs statuses, relay outputs states and registered runs. Software provided with the relay allows to: relay configuration, reading and writing settings, picked-up signals quitting, graphic preview of measured values and registered records preview.

TECHNICAL DATA