Microprocessor phase sequence and phase failure sensor CKF-BR-TRMS

Microprocessor-controlled phase sequence and phase failure sensor CKF-BR-TRMS is a reliable device designed to protect three-phase electric motors. Its function is to detect dangerous situations, such as voltage loss in one of the phases or voltage asymmetry, which can lead to motor damage. Additionally, the sensor controls the phase sequence, preventing incorrect direction of rotation.

Application and functionality

The device finds wide application in industrial installations, public buildings and anywhere where protection of three-phase motors is required. Thanks to the built-in True RMS function, the sensor ensures precise operation even in networks with disturbances. Mounting on a 35 mm DIN rail facilitates integration with existing electrical infrastructure. This is why installers will appreciate the simplicity and speed of installation, and end-users – the certainty of reliable protection of their devices.

Key features and benefits

• Phase failure protection: The sensor reacts immediately to voltage loss in any phase, disconnecting the motor and preventing its damage. A 4-second disconnection delay minimizes the risk of accidental shutdown caused by momentary voltage drops.
• Phase sequence control: Prevents the motor from starting in the wrong direction, which is particularly important in applications requiring precise motion control.
• Voltage asymmetry detection: Protects the motor against the negative effects of uneven phase loading, which extends its life and improves energy efficiency.
• True RMS measurement: Ensures accurate measurements even in the event of harmonic disturbances in the power supply network, guaranteeing reliable operation of the device in difficult conditions.
• LED indication: Two LEDs indicate correct power supply and any problems with the phase sequence, facilitating diagnostics and maintenance of the installation.
• Screw connection: Provides a solid and durable connection of wires, minimizing the risk of loosening connections during operation.
• Compact dimensions: A width of 35 mm allows the device to be mounted in tight electrical panels.

The CKF-BR-TRMS sensor is an investment in the safety and reliability of the electrical installation. Its solid construction and advanced features provide long-term protection of three-phase motors against damage caused by improper operation of the power supply network. The device is designed to operate at temperatures from -25°C to 40°C and has a protection degree of IP20.