F&F CKF-BT Phase Sequence and Asymmetry Monitoring Relay 10A 1P 0.5-15s 40-80V

The F&F CKF-BT is a precision-engineered monitoring relay designed to safeguard electrical equipment by continuously analyzing the status of the power supply. This device is specifically engineered to detect phase sequence, phase loss, and phase asymmetry, ensuring that motors and sensitive industrial installations are protected from damage caused by power irregularities. With a 10A output and a configurable delay time, it provides a reliable solution for maintaining operational stability in 40-80V systems.

Advantages

This monitoring relay offers robust protection by reacting quickly to voltage fluctuations and phase errors, which helps prevent costly equipment failure and downtime. The adjustable delay feature allows users to fine-tune the response time to avoid unnecessary tripping during minor, transient power disturbances. Its compact design and high-quality construction ensure long-term reliability and ease of integration into existing electrical panels and control systems.

Suitable for

• Protection of three-phase motors against phase loss
• Monitoring industrial control systems for phase sequence errors
• Safeguarding equipment in 40-80V power networks
• Preventing damage from phase asymmetry in electrical installations

When it may not be suitable

This device is not intended for use in systems operating outside the specified 40-80V voltage range. It is also not suitable for applications requiring multi-phase output switching, as it features a 1P configuration.

Key specifications

• Operating voltage: 40-80V
• Output contact: 1P (single pole)
• Maximum current: 10A
• Adjustable delay time: 0.5 to 15 seconds
• Monitored parameters: Phase sequence, phase loss, and phase asymmetry

How to use

The relay should be installed by a qualified professional within an electrical distribution board. Connect the power supply lines to the designated input terminals according to the wiring diagram provided with the device. Once connected, use the adjustment dial to set the desired delay time based on the specific requirements of the connected equipment. The device will automatically monitor the supply and disconnect the output circuit if an irregularity is detected.

What to consider before purchase

• Verify that your system voltage falls within the 40-80V range
• Ensure the 10A current rating is sufficient for your load requirements
• Confirm that the 1P configuration meets your control circuit needs
• Check available space in your electrical enclosure for mounting

Usage recommendations

Regularly inspect the relay status indicators to ensure the system is operating within normal parameters and perform periodic testing of the disconnection function to guarantee continued protection.