Split Core Current Transformer TQR-8 400/5A

The Circutor TQR-8 400/5A split-core current transformer (code M76037) is designed to simplify installation in electrical systems without the need to interrupt the power supply, making it an ideal solution for applications where it is not possible to stop the electrical flow. This current transformer is especially useful in single-phase installations with primary currents of up to 400 A and a transformation ratio of 400/5 A.

Split-core for easy installation: One of the key features of the Circutor TQR-8 is its split-core design, which allows the transformer to be installed directly around the cables or busbars without the need to disconnect the installation. This feature is extremely advantageous in situations where the interruption of the power supply would be costly or impractical, making it an ideal choice for critical commercial or industrial installations.

High accuracy and reliability: This transformer offers high accuracy in current measurement, with an accuracy class of 1 and 3, providing a power of 1.5 VA (Class 1) and 3 VA (Class 3), ensuring that measurements are reliable and consistent, even under demanding operating conditions. Additionally, its ability to withstand permanent overloads of 120% of the nominal current ensures it can operate safely under various conditions.

Technical specifications: The TQR-8 has an inner diameter of 80 mm, making it compatible with a wide range of cables and busbars. With an insulation voltage of 3 kV between terminals and a nominal frequency of 50/60 Hz, this transformer is designed to operate optimally in standard electrical systems.

Thermal resistance and protection: The transformer is designed to withstand challenging thermal conditions, with a short-circuit thermal intensity resistance (Ith) of 60 In and a dynamic intensity of 2.5 Ith. Furthermore, its self-extinguishing plastic enclosure according to UL 94 standard ensures high fire and impact resistance. The transformer has a protection rating of IP40, or IP65 with an additional sealing gasket, making it suitable for various environmental conditions.

Versatile applications: The Circutor TQR-8 400/5A is ideal for installations that require current measurement without interrupting the supply, such as in industrial, commercial, and residential settings. Its ability to operate in temperature ranges from -10 ºC to +60 ºC and its resistance to relative humidity from 15% to 85% without condensation ensure it can function in a variety of environments.

Technical specifications:

• Primary current: 400 A.
• Transformation ratio: 400/5 A.
• Inner diameter: 80 mm.
• Accuracy: Class 1 (1.5 VA), Class 3 (3 VA).
• Insulation voltage: 3 kV.
• Protection rating: IP40 (IP65 with gasket).
• Dimensions: 216 x 173 x 43.1 mm.
• Weight: 0.952 kg.
• Standards: UNE-EN 61869-2, UL 94.

System advantages:

• Easy installation thanks to the split-core design, which avoids the need to interrupt the power supply.
• High accuracy in measurement, ensuring reliable and consistent data for monitoring the electrical system.
• Robust and durable, with a self-extinguishing plastic enclosure and protection against adverse environmental conditions.

The Circutor TQR-8 400/5A split-core current transformer is an efficient and reliable solution for current measurement in single-phase installations, offering ease of installation, accuracy, and durability in a compact format.