FF TO-400-5 Split-Core Current Transformer 400/5A Class 0.5

The FF TO-400-5 is a high-precision split-core current transformer engineered for reliable electrical monitoring and energy management. Featuring a transformation ratio of 400/5A and an accuracy class of 0.5, this device provides accurate data for power analysis in various electrical systems. Its split-core design is specifically developed to facilitate installation on existing cables, eliminating the need to disconnect or interrupt the primary circuit during setup.

Advantages

The primary benefit of the FF TO-400-5 is its non-invasive installation process, which significantly reduces downtime and labor costs in industrial or commercial environments. The split-core mechanism allows the transformer to be clamped directly onto conductors, making it an ideal choice for retrofitting existing electrical panels where space is limited and circuit interruption is not feasible. Furthermore, the high accuracy class ensures that energy consumption data remains precise, supporting effective power management and billing applications.

Suitable for

• Energy monitoring systems
• Power management and analysis
• Industrial electrical infrastructure
• Commercial building energy audits
• Retrofitting existing electrical installations

This transformer may not be suitable for high-voltage applications exceeding its rated insulation levels or for environments with extreme electromagnetic interference that could compromise the accuracy of the 0.5 class rating. It is also not intended for use in circuits where the primary current consistently exceeds the rated 400A capacity.

Key specifications

• Transformation ratio: 400/5A
• Accuracy class: 0.5
• Core type: Split-core
• Application: Current measurement

To use the FF TO-400-5, ensure the primary circuit is de-energized if safety protocols require it, although the design allows for installation on live cables by qualified personnel. Open the split-core housing, place the transformer around the conductor, and securely close the latch until it clicks. Connect the secondary output terminals to your measuring instrument or power meter, ensuring the wiring is secure and correctly polarized according to your monitoring device requirements.

What to consider before purchase

• Verify that the primary current does not exceed 400A
• Ensure the secondary input of your meter is compatible with a 5A output
• Check the physical dimensions of the conductor to ensure it fits within the transformer aperture
• Confirm the accuracy requirements of your specific application

For optimal performance and safety, ensure all secondary connections are tightened properly and that the transformer is installed in a clean, dry environment away from excessive heat sources.