Lumel LCTR 4514400075A51 Current Transformer with Round Aperture 45/14, 75A/5A

The Lumel LCTR 4514400075A51 is a precision-engineered current transformer designed for integration into industrial electrical measurement systems. This device facilitates the accurate monitoring of current levels by converting high primary currents into a manageable secondary signal suitable for standard measuring instruments and protection relays. With its robust construction and reliable performance, it serves as a critical component in power distribution networks, enabling precise energy management and system safety.

Advantages

This current transformer offers exceptional measurement accuracy, ensuring that data acquisition remains consistent even under varying load conditions. Its design prioritizes durability and long-term stability, making it an ideal choice for demanding industrial environments. The compact form factor allows for efficient installation in space-constrained electrical panels, while the high-quality internal components minimize signal distortion and phase error, providing reliable output for downstream monitoring equipment.

Suitable for

• Industrial power distribution networks
• Energy management and monitoring systems
• Protection relay applications
• Current signal conversion for measuring instruments

When it may not be suitable

This device is not intended for use in high-voltage transmission lines or applications requiring transformation ratios outside of the specified 75A/5A range. It is also not suitable for environments where the primary conductor dimensions exceed the physical capacity of the 45/14 round aperture.

Key specifications

• Transformation ratio: 75A/5A
• Aperture type: Round
• Aperture size: 45/14 mm
• Application: Industrial current measurement

How to use

Installation should be performed by qualified electrical personnel in accordance with local safety regulations. The primary conductor must be passed through the round aperture of the transformer, ensuring a secure fit. The secondary terminals should be connected to the measuring or protection device using appropriate wiring. It is essential to ensure that the secondary circuit is never left open while the primary conductor is energized to prevent the generation of dangerous voltage levels.

What to consider before purchase

• Verify that the 75A primary current matches your specific application requirements
• Ensure the 45/14 mm aperture is compatible with the diameter of your primary conductor
• Confirm the secondary output of 5A is compatible with your existing measurement or protection equipment

Usage recommendations

Always ensure the secondary circuit is properly terminated or short-circuited before energizing the primary conductor to maintain operational safety and device integrity.