FF TOM-150-5 Miniature Split-Core Current Transformer 150/5A 1.5VA

The FF TOM-150-5 is a high-precision miniature split-core current transformer engineered for accurate current monitoring in electrical installations. Featuring a transformation ratio of 150/5A and a power rating of 1.5VA, this device provides a reliable interface for measuring electrical loads. Its split-core design is specifically developed to facilitate installation on existing wiring, eliminating the need to disconnect or interrupt the primary circuit during setup.

Advantages

The primary benefit of this current transformer is its split-core construction, which significantly reduces installation time and labor costs by allowing the device to be clamped directly onto a conductor. The compact size ensures it can be integrated into crowded electrical panels or limited-space environments where traditional solid-core transformers would be difficult to mount. Furthermore, the device maintains high measurement accuracy, ensuring consistent data for energy management systems and industrial monitoring applications.

Suitable for

• Energy monitoring and sub-metering systems
• Industrial automation and control processes
• Electrical load management
• Retrofitting existing electrical installations
• Current sensing in distribution boards

When it may not be suitable

This transformer is not intended for use in high-voltage power transmission lines or environments where the primary current consistently exceeds the rated 150A capacity. It is also not suitable for outdoor installations unless housed within a protective, weather-resistant enclosure.

Key specifications

• Transformation ratio: 150/5A
• Power rating: 1.5VA
• Design: Split-core
• Application: Current measurement

How to use

To install the FF TOM-150-5, open the split-core housing by releasing the locking mechanism. Place the transformer around the primary conductor that needs to be monitored and snap the core halves back together until they are securely locked. Ensure the orientation follows the manufacturer's markings for correct polarity. Connect the secondary output terminals to your measuring device, such as an ammeter or power meter, ensuring that the secondary circuit is never left open while the primary conductor is energized.

What to consider before purchase

• Verify that the primary current does not exceed 150A
• Ensure the secondary input of your measuring device is compatible with 5A signals
• Check the physical dimensions of the cable to ensure it fits within the transformer aperture
• Confirm that the environment is dry and free from excessive dust or corrosive elements

Usage recommendations

Always ensure that the secondary circuit is connected to a load or shorted before energizing the primary conductor to prevent the generation of dangerous high voltages.