Overview

Elseta Rogowski Coils provide a flexible, safe, and accurate solution for measuring alternating current in power monitoring and automation applications. Designed for easy installation around existing conductors, Rogowski coils are ideal for projects where traditional current transformers are difficult to install or where the power line cannot be disconnected.

Together with the Rogowski Coil Integrator (RCI), the coils can be used to collect current measurements and deliver them to compatible devices such as eRTU BCM1P, IOMod FPI, IOMod Meter, or IOMod 4Cs4Vs modules.

Features

Flexible and lightweight current sensor for easy installation
Suitable for installation around existing conductors without disconnecting the power line
Designed for AC current measurement in power monitoring and automation systems
Wide bandwidth range for monitoring power signals, harmonics, and transients
Good linearity for accurate current measurement
Output voltage proportional to the derivative of the input current
Available in multiple coil sizes for different conductor diameters
Default shielded twisted-pair signal cable for reliable signal transmission
Coil IP67 waterproof grade
Rogowski Coil Integrator for adapting coil measurements to compatible Elseta device inputs

Typical applications

Power monitoring systems
Fault passage indication
Current measurement in automation systems
Harmonic and transient monitoring
Retrofitting projects where power lines cannot be interrupted

Specifications

Device data
Article number	RCI
Product Description	3x Rogowski Coils with Rogowski Coil Integrator
Warranty	2 years
Measurements and functions
Measurement type	Differential current sensor / Rogowski coil principle
Rated current	500 A (other options available)
Output voltage	RCI – 225 mV RMS (IEC 61869-10)
Accuracy	< 1% at 25°C
Position error	±1%
Frequency range	10 Hz – 20 kHz
Phase shift	≤ 1°
Coil signal cable length	2 m default
Working voltage (coil)	1000 VRMS CAT III / 600 VRMS CAT IV
Dielectric strength (coil)	7400 VRMS / 1 min
Power Supply
Auxiliary power supply	9-58VDC (full range)
Overvoltage protection	35VDC (+/-5%)
Reverse polarity protection	Yes
Isolation	Power supply circuit isolated
Power consumption	< 200mA @ 12 VDC
Operating conditions
Operating temperature	-40°C … 85°C
Storage temperature	-40°C … 85°C
Humidity	max. 95 % (non-condensing)
Protection class	Coil – IP67, RCI – IP20
Dimensions and installation
RCI case height x width x depth	119 x 22.5 x 101 mm
Coil dimensions	293 mm coil length, 80 mm window diameter 363 mm coil length, 105 mm window diameter 493 mm coil length, 150 mm window diameter 593 mm coil length, 180 mm window diameter 723 mm coil length, 240 mm window diameter 943 mm coil length, 300 mm window diameter
Installation type	RCI – DIN Rail mounting Coils – zip tied with a variable spacer for centering