Monitoring relay RPN-1VFS-A400 864372

Three-phase network monitoring relay – reliable installation protection

The RPN-1VFS-A400 relay is an advanced device designed to monitor voltage parameters in 3(N) - 400/230 V three-phase networks. Its main task is to ensure the safety and continuity of the electrical installation by detecting irregularities such as phase failure, voltage asymmetry, or incorrect phase sequence. Thanks to this, both installers and end-users can rely on effective protection against potential failures and equipment damage.

Functions and application

The RPN-1VFS-A400 relay performs key monitoring functions: LOST D (phase failure monitoring), ASYM D (voltage asymmetry monitoring), and SEQ D (phase sequence monitoring). This makes it an ideal solution for protecting various receivers, including electric motors, transformers, switchgear, and other devices sensitive to voltage fluctuations. The device's overload capacity is at least 1.2 Un, which ensures its stable operation even in difficult operating conditions. This allows protection against short-term voltage surges that can occur during the start-up of high-power devices.

This relay finds application in:

• Residential and commercial construction: Protection of electrical installations in residential buildings, offices, and commercial facilities.
• Industrial: Protection of production machines and equipment against damage caused by power supply irregularities.
• Energy sector: Monitoring of voltage quality in distribution networks.
• Automation systems: Integration with control and monitoring systems to ensure reliable operation of technological processes.

Characteristics and benefits

The RPN-1VFS-A400 is distinguished by its precise operation and reliability. It has one changeover contact, which simplifies its integration with existing control systems. The asymmetry setting range is stepless, allowing the device's sensitivity to be adapted to the specific requirements of a given installation. In addition, the relay has a 4-second disconnection delay, which prevents unnecessary shutdowns caused by temporary disturbances in the power supply. Mounting on a 35 mm rail facilitates quick and easy installation. The device is made of high-quality materials, which guarantees its long service life and resistance to environmental conditions. AgSnO2 contacts used ensure reliable current conduction and minimize the risk of corrosion.