Current transformer 1250/5A, class 0.5 TI-1250-5

Current transformer for precise measurements

This current transformer, with a ratio of 1250/5A and accuracy class 0.5, is a reliable tool for measuring current in electrical installations. Designed for both professional installers and end-users, it provides precise and safe load monitoring. Its robust construction and compliance with IEC 60044-1 standards guarantee long-lasting and trouble-free operation.

Construction and application

The transformer is of the through type with a closed core, which means that the conductor with the measured current passes through its central opening. This construction allows current measurement without the need to interfere with the primary circuit. It is ideal for use in measuring, control and electrical protection systems. The transformer enables the conversion of large current intensities into values adapted to the measurement ranges of standard control and measuring devices. This makes it possible to safely and accurately monitor the load in various industrial and commercial applications.

Key features and benefits

• High accuracy: Accuracy class 0.5 ensures precise measurements, which is crucial in applications requiring high data reliability.
• Large measurement range: Primary rated current of 1250A allows use in installations with high load.
• Safety of use: Protection against touch minimizes the risk of electric shock during operation.
• Solid construction: Made of high-quality materials ensures durability and resistance to environmental conditions.
• Easy installation: Possibility of mounting on a panel or busbar facilitates integration with existing infrastructure.
• Standard connection: Screw connection of the secondary circuit ensures a secure and reliable electrical connection.
• Compliance with standards: Meets the requirements of IEC 60044-1 standard, which guarantees safety and compatibility with other devices.
• Passage diameter 46 mm: Allows use with cables of various thicknesses.

Technical parameters in practice

The transformer is characterized by a rated secondary apparent power of 10 VA, which ensures stable operation even under higher secondary loads. The dynamic factor FS 5 means that the transformer can temporarily withstand a current much higher than the rated current without damage – this is particularly important when starting devices with induction motors, which generate high starting currents. The insulation withstand voltage of 3 kV/1 min provides a high level of safety during operation in difficult environmental conditions.

This transformer has a rated primary current of 1250 A and a secondary current of 5 A. Its accuracy class is 0.5, the rated secondary apparent power is 10 VA, and the dynamic factor is FS 5. The passage diameter is 46 mm.

Remember the manufacturer's recommendations regarding the connection of the secondary circuit (wire with a diameter of min. 2.5 mm²) and grounding of the S2 terminal to ensure proper and safe operation of the device!