📝 Description

Used product. AREVA MX3VIR016A.11 digital interface protection relay, identification code No. 100030274.002, designed to monitor electrical parameters and protect systems connected to the power grid.
The device belongs to the family of multifunction voltage and frequency protection relays. The MX3VIR016A model is associated with interface protection functions according to the CEI 0-16 standard, including undervoltage, overvoltage, underfrequency, overfrequency, and protection against electrical grid anomalies.

⚙️ Main Specifications

• Brand: AREVA
• Model: MX3VIR016A
• Version shown on label: MX3VIR016A.11
• Identification number: 100030274.002
• Type: Multifunction electrical protection relay
• Application: Grid interface protection
• Frequency: 50/60 Hz, as indicated on the front panel
• Auxiliary supply indicated: 19–100 V DC or 19–72 V AC
• Digital input indicated: 19–100 V DC
• Front interface: LCD, navigation buttons, and status LEDs
• Connections: Screw terminals
• Enclosure: Insulating housing with a transparent front cover
  The supply values have been transcribed from the markings visible on the front panel. Before installation, they should be verified against the manual for the specific version.

🔧 Main Functions

• Undervoltage: Detects voltage below the configured thresholds.
• Overvoltage: Detects excessive voltage.
• Underfrequency and overfrequency: Monitors deviations from the configured limits.
• Grid parameter monitoring: Monitors electrical conditions to help ensure system safety.
• Alarm management: Indicates operating status and anomalies through the display and LEDs.
  The functions actually enabled and their corresponding thresholds depend on the relay's configuration and version.

🔌 Purpose and Operation

The relay monitors grid electrical parameters and compares the measured values with the configured thresholds. When an abnormal condition is detected, it can command the tripping system or the interface device specified in the electrical panel design.
It is intended for installations where grid connection must be monitored and electrical protection managed according to the project design.

🧩 Applications

• Electrical panels for interface protection.
• Grid-connected electricity generation systems.
• Photovoltaic installations and distributed generation systems, subject to verification of the required configuration and compliance.
• Maintenance and repair of industrial electrical panels.
• Replacement of AREVA/ALSTOM relays with compatible codes and revisions.

⚠️ Checks Before Installation

• Verify the complete code MX3VIR016A.11 and the identification number.
• Check the power supply, wiring, and device configuration.
• Verify compatibility with the electrical schematic and applicable regulatory requirements.
• Perform functional and protection tests before commissioning.
  The external appearance shown in the photographs cannot confirm correct operation. The relay should only be described as working after an appropriate test.

🛡️ Product Condition

The relay has a complete enclosure and a front panel with display, buttons, and indicators. Its functional condition cannot be verified from photographs alone.

📦 Package Contents

• 1 AREVA MX3VIR016A.11 interface protection relay.
• No additional accessories or manuals are shown.

🟢 Summary

AREVA multifunction electrical protection relay, identified by code MX3VIR016A.11 – No. 100030274.002, suitable for maintenance and replacement of components in compatible electrical panels, subject to technical verification.