Differential Transformer Circutor WGC-220x105

The Circutor WGC-220x105 differential transformer (code P10158) is a device designed to provide differential protection in electrical installations with currents up to 1250 A. This model is distinguished by its high immunity to transient current spikes, preventing unwanted trips in the system and ensuring safe and reliable operation. It is ideal for integration into distribution panels and other industrial or commercial environments where effective protection against insulation faults is required.

Optimised for distribution panels: This transformer has been designed to facilitate its installation in electrical panels, with traditional fixing options and the ability to mount on a DIN rail using an accessory, simplifying its integration into existing electrical systems. Its compact design, with dimensions of 314 x 195 x 54.2 mm, allows for efficient placement in confined spaces.

High immunity to transients: One of the key benefits of the WGC series is its improved immunity to transient current spikes, which often cause untimely trips in other differential transformers. This ensures that the system operates stably, minimising unwanted interruptions in differential protection. The transformer is compatible with WGC series relays, and the sensitivity of the transformer-relay system automatically adjusts according to the associated relay.

Reliable performance on demand: The Circutor WGC-220x105 is designed to handle extreme conditions with a thermal short-circuit current (Ith) of 1.8 kA for 1 second and a dynamic current (Idyn) of 2.5 Ith, ensuring it can operate smoothly even in overload scenarios. Its permanent thermal resistance of 60 A makes it ideal for high electrical demand environments.

Technical specifications:

• Maximum current: 1250 A.
• Maximum service voltage: 720 V.
• Transformation ratio: 30/0.06 A.
• Dynamic current (Idyn): 2.5 Ith.
• Thermal short-circuit current (Ith): 1.8 kA / 1 s.
• Protection rating: IP20 at terminals according to IEC 60529.
• Dimensions: 314 x 195 x 54.2 mm.
• Weight: 3.9 kg.

Materials and durability: The transformer is made with a self-extinguishing polycarbonate housing according to UL 94 V0 standard, ensuring high fire resistance and the durability necessary for industrial environments. Its operating range covers temperatures from -20 ºC to +70 ºC, with a relative humidity between 5% and 95%, making it a robust solution adaptable to different environmental conditions.

Standards and safety: It complies with international standards IEC 60664-1, IEC 60664-3, and IEC 60044-1, ensuring its safety and reliability in industrial applications. Additionally, it is designed to operate at a maximum altitude of 2000 metres, maintaining a high level of performance in different electrical network configurations.

System advantages:

• Reliable differential protection with high immunity to transients, ideal for avoiding untimely trips.
• Flexible mounting, with the option of installation on a DIN rail or electrical panels through wall mounting.
• Robust design, constructed with durable and self-extinguishing materials to ensure protection in industrial and commercial environments.

The Circutor WGC-220x105 differential transformer is an efficient and reliable solution for electrical installations requiring advanced differential protection. Its high immunity to transients, ease of installation, and robustness make it an ideal choice for systems up to 1250 A.