Rogowski Coil Current Transformer – 400A Primary, 0.333V Output

This Rogowski Coil Current Transformer is designed for accurate and flexible AC current measurement in commercial and industrial power systems.

Rated for 400A primary current, the coil provides a safe 0.333V voltage output, making it compatible with modern digital energy meters, data loggers, and monitoring devices that accept low-voltage inputs.

Unlike traditional solid-core or split-core CTs, the Rogowski coil features a flexible, lightweight design that can be easily wrapped around existing conductors, even in tight or irregular spaces. This makes it ideal for:

• Retrofit installations

• Congested switchboards

• Large cable bundles

• Busbar monitoring

• Temporary energy audits

Operating at 50–60Hz, the unit maintains a phase angle error of less than 2° at 50% rated current, supporting reliable load profiling and demand analysis.

Typical applications include:

• Commercial distribution boards

• Solar inverter AC monitoring

• Generator output measurement

• HVAC and plant equipment tracking

• Industrial energy management systems