Current transformer 400/5A Ø30, class 0.2s TI-400-5-02S

Current transformer for precise measurements

This single-phase current transformer with a closed core is a reliable tool for transforming high currents into safe and readable values for measuring devices. Designed for use in both industrial installations and energy consumption monitoring systems, it ensures accuracy and safety of measurements.

Characteristics and application

The TI-400-5-02S transformer with a ratio of 400/5 A is ideal for use with ammeters, energy meters, protective relays and other measuring devices. Its design allows for mounting on panels or busbars, increasing installation flexibility. Thanks to the accuracy class of 0.2S, it guarantees precise readings even under high loads. Using the transformer allows for safe monitoring of electrical circuits without direct contact with high voltages and currents.

Key features and benefits

• High accuracy: Accuracy class 0.2S ensures reliable measurement results, which is crucial in billing and energy quality control systems.
• Safety: Insulation with a breakdown voltage of 3 kV/1 min protects against electric shock and equipment damage.
• Universal mounting: Possibility of vertical or horizontal mounting on a panel or busbar facilitates integration with existing infrastructure.
• Durability: Wide operating temperature range (-50÷85°C) enables use in harsh environmental conditions.
• Compliance with standards: Meets the requirements of PN-EN 61869-1:2009 and PN-EN 61869-2:2013-06, which confirms its quality and safety.
• Solid construction: Made of high-quality materials, ensuring long-lasting and reliable operation.
• Suitable for high currents: Thermal current of 1.2× In and dynamic current of 2.5× Ith allow for safe operation even with temporary overloads.

The transformation ratio is 400/5, and the rated power is 3.75 VA. The accuracy class is 0.2S, and the operating voltage is 0.66/0.72 kV. The rated secondary current is 5 A with an insulation breakdown voltage of 3 kV/1 min. The dimensions of the P1/P2 hole (C) are 32 × 32 mm, and the external dimensions (WxHxD) are 75 × 98 × 42 mm.

Remember to connect the secondary wire with a minimum diameter of 2.5 mm² and ground the S2 terminal to ensure safe and reliable operation of the device. Avoid disconnecting the secondary circuit while the transformer is operating due to the risk of high voltage generation.