+370 645 38878
info@elseta.com
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) |
| Input impedance | 2 MΩ; <50pF |
| Nominal frequency range | 45 … 60 Hz |
| Full frequency range | 20 Hz – 10 kHz |
| Linearity | ±0.3 % from 20 Hz to 10 kHz |
| Maximum input voltage | 10 Vrms |
| Output impedance | ≤50 Ω |
| Accuracy | < 1% at 25°C |
| Amplitude error | ≤ ±3 % from 5 % to 10 % of nominal current ≤ ±1 % from 10 % to 20 % of nominal current ≤ ±0.5 % from 20 % to 100 % of nominal current |
| Phase displacement | ≤ ±1° at 45..65 Hz |
| 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) |
| Power supply input protection | IEC 61000-4-5 surge protection and IEC 61000-4-2 ESD protection |
| Reverse polarity protection | Yes |
| Isolation | Power supply circuit isolated |
| Power consumption | 52 mA / 620 mW @ 12 VDC 28 mA / 680 mW @ 24 VDC 16.6 mA / 800 mW @ 48 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 – 35 mm DIN Rail mounting Coils – zip tied with a variable spacer for centering |
Documentation
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Order
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