IRUPRO-UOR - Voltage Protection

Numerical Voltage Protection Relay (Non-Draw out) : IRU PRO-UOR

FEATURES
  • Multi-function Voltage Protection for Distribution
  • Numeric DSP technology-based relay
  • Draw-out Relay with Self CT shorting modular design
  • Two groups of configuration parameters
  • Voltage supervision, each with two steps under and over voltage detection
  • Single / Three-phase selection
  • 50/60Hz Nominal Frequency (Site selectable)
  • Interactive HMI with USB Plug & Play support
  • User configurable Digital Input / Digital Output
  • 10 Fault & 50 Event records with date and time stamp
  • IEC-103 / MODBUS communication protocol
  • Front-end live link simulation support for testing of relay even without 3 phase injection voltage source
  • Inverse as well as Definite Trip timing curve selection for under/over voltage
  • Display of measuring values of the line voltages and system voltages U0, U1 & U2 as RMS values
  • Block on under voltage in case of Power failure (user selectable)
  • Suitable for Star/Delta connection
  • Assignment matrix for output relays for all protection
  • Offline Trip Test mode

PRO range of relays provides reliable and high-performance protection.

The IRU-PRO is a relay for AC Voltage supervision with universal application, it protects the three-phase network against over, undervoltage, unbalance or earth faults in isolated networks. Besides the pure RMS value measurement of the line voltage, the IRU-PRO evaluates the symmetrical components (U1, U2 & U0 sequence system). By evaluating these components relay IRUPRO can detect the phase sequence, voltage unbalance and earth faults.

  • IRUPRO Relays safeguard expensive electrical devices, motors, transformers and appliances from damage caused by voltage fluctuations (overvoltage and undervoltage).
  • Overvoltage can damage insulation and cause equipment burnout, while undervoltage causes motors to draw too much current, resulting in overheating and damage. Relay instantly disconnects the circuit to prevent these issues.
  • When equipment operates under safe and optimal voltage conditions, It increases the longevity of connected devices, reducing the frequency of costly repairs.
  • Enhanced Safety and Risk Reduction
  • The relay’s automatic and fast tripping action localises the fault and minimises the duration of system disruption.
  • Recording detailed information about fault events (time, duration, voltage waveform).Allowing the system to automatically re-energise after a set time once the voltage returns to normal limits.