top of page
ACREL Medium Voltage Overvoltage and Undervoltage Relay

ACREL Medium Voltage Overvoltage and Undervoltage Relay

From $1,582.00Sale Price
ACREL Medium Voltage Overvoltage and Undervoltage Relay is designed to monitor three-phase voltage and provide protection and alarm functions for medium voltage power systems. It supports PT supervision, overvoltage, undervoltage and residual overvoltage monitoring, with RS485 communication using Modbus and IEC 60870-5-103 protocols. The relay is intended for use in user substations and medium voltage distribution equipment where reliable voltage monitoring and protection are required.
Quantity

The ACREL Medium Voltage Overvoltage and Undervoltage Relay is a microcomputer-based medium voltage protection relay for applications where voltage monitoring and potential transformer supervision are required. It is designed for user terminal substations and medium voltage distribution systems, with Acrel documentation specifying applications at voltage levels of 35 kV and below.

The ACREL Medium Voltage Overvoltage and Undervoltage Relay monitors three voltage inputs and provides dedicated voltage protection and PT supervision functions. This makes it suitable for detecting abnormal voltage conditions and identifying potential PT disconnection or supervision faults.

The relay also provides RS485 communication with support for Modbus serial communication and IEC 60870-5-103, allowing monitoring and data exchange with compatible power management or automation systems.

How it works

  • The relay receives voltage signals from the medium voltage system through the associated potential transformer circuit.
  • It continuously evaluates the measured three-phase voltage against configured protection and alarm settings.
  • Overvoltage, undervoltage and residual overvoltage conditions can be monitored.
  • The PT supervision function helps identify abnormal conditions associated with the voltage transformer circuit.
  • Operating information and protection data can be communicated through the RS485 interface using supported protocols.
  • Fault and sequence-of-event recording functions provide additional information for investigating abnormal system conditions.

Why choose this product?

  • Designed specifically for medium voltage protection and PT supervision applications.
  • Combines voltage monitoring, protection, alarm and communication functions in one relay.
  • Suitable for integration into medium voltage substations and distribution equipment.
  • Supports commonly used substation communication protocols.
  • Provides event and fault recording to assist with system monitoring and fault investigation.

Benefits

The ACREL Medium Voltage Overvoltage and Undervoltage Relay can help operators identify abnormal voltage conditions and PT circuit problems before they develop into more significant protection or monitoring issues. Its communication capability also allows relevant operating information to be incorporated into a wider power monitoring or substation automation system.

bottom of page