Digital phase protection relay with V-Otomat type assembly

Digital phase protection relay with V-Otomat type assembly

The FKV-03HF is a digital phase protection relay designed to protect three-phase motors against electrical faults originating from the power grid. This device continuously monitors critical electrical parameters, ensuring safe operation and preventing damage to industrial equipment.

The equipment allows for the detection and management of multiple anomalies, including:

• Overvoltage (H)
• Subtension (L)
• Asymmetry between phases (ASY)
• Phase sequence error (PHS)

When the system is functioning correctly, the relay activates and the output LED remains lit. If any anomaly is detected, the device automatically deactivates the relay after a configurable time and displays the error on the screen.
The FKV-03HF stands out for its triple digital display , which shows in real time the voltages between phases ( L1-L2, L2-L3, L3-L1 ) along with the system status, allowing for clear and quick monitoring.

Main features:

• Complete protection for three-phase systems
• Detection of overvoltage, undervoltage, asymmetry and phase sequence
• Real-time visualization of phase-to-phase voltages
• Digital display (3x3 digits) and status LED
• Easy setup using front buttons
• Configurable actuation times (fault entry/exit)

The device allows you to adjust key parameters such as:

• Overvoltage and undervoltage values
• Allowed level of asymmetry (5% – 50%)
• Waiting time before failure and recovery (1 – 30 seconds)

Regarding technical specifications:

• Power supply: 3 x 380V AC + neutral
• Frequency: 50/60 Hz
• Power consumption: <6VA
• Accuracy: ±1%
• Relay output: 5A / 250V AC
• Operating temperature: -20°C to +55°C

Its compact design allows for DIN rail mounting, facilitating installation in electrical panels. Furthermore, its automatic operation ensures a rapid response to any network anomalies.
The FKV-03HF is a reliable, accurate and easy-to-configure solution for the protection of three-phase motors, ensuring operational continuity and reducing electrical risks in industrial installations.