Monitoring relay RPN-1VFT-A400 864374

Multifunctional monitoring relay for 3-phase networks

The RPN-1VFT-A400 relay is a reliable device designed to monitor parameters of a 3-phase electrical network with a voltage of 3(N) 400/230 V AC. Its main task is to protect the electrical installation and connected devices from the effects of improper network operation, such as phase failure, voltage asymmetry, or incorrect phase sequence. This relay finds application in both industrial installations and public buildings, as well as in homes where high power supply reliability is required.

Functions and application

RPN-1VFT-A400 performs key monitoring functions: LOST D (phase failure monitoring), ASYM D (voltage asymmetry monitoring), and SEQ D (phase sequence monitoring). This ensures comprehensive protection against various types of failures. Adjustable contact delay (up to 9 seconds) helps avoid false alarms caused by short-term power disturbances. Smooth adjustment of the asymmetry range (5...80 V AC) allows for precise adaptation of the relay to the specific operating conditions of the installation. The device is mounted on a DIN rail, which facilitates its installation and integration with existing systems.

Characteristics and benefits

The RPN-1VFT-A400 relay is characterized by high quality of workmanship and reliable operation. It is equipped with a 1P changeover contact with parameters of 12A / 250V AC and 12A / 24V DC, which ensures its versatility and ability to cooperate with various control circuits. Signaling LEDs (green – correct operation, red – error) facilitate diagnostics and quick identification of problems. Overload capacity ≥1.2 Un guarantees stable operation even with momentary exceedances of the rated voltage. Compact dimensions (17.5x90x64.6mm) allow the relay to be mounted in limited space. Contact material AgSnO2 ensures long life and corrosion resistance.