LFR Rogowski Coil
- Brand
- PEM
- Origin
- United Kingdom
A Rogowski coil series with ×10 and ×1 setting specifications for low-frequency current and phase measurement.
Key specification options
- Sensitivity (mV/A) · ×10
- 100.0 / 50.0 / 20.0 and more
- Sensitivity (mV/A) · ×1
- 10.0 / 5.0 / 2.0 and more
- Peak current (A) · ×10
- 60.0 / 120.0 / 300.0 and more
- Peak current (A) · ×1
- 600.0 / 1.2k / 3.0k and more
- Noise (mV rms) · ×10
- 3.0 / 2.0 / 1.0
- Noise (mV rms) · ×1
- 1.0 / 0.5
Measurement and application
Current waveform measurements depend on both probe placement and signal conditioning. Start with the conductor shape, available space and the waveform you need to observe, then consider the coil and measurement equipment together.
Selection and connections
Distinguish temporary testing from fixed installation, and confirm the required coil, integrator and cable combination rather than assuming that similar looking accessories are interchangeable.
Related models & specifications
RCT Industrial Rogowski Coil
Series and rated-range selection
| Model | Measurement type | Rated range · RMS,(A) | Output type · full scale | Accuracy | Power consumption · maximum | Measurement bandwidth (-3dB) · ＜2000A | Measurement bandwidth (-3dB) · ≥2000A | Coil length · mm |
|---|---|---|---|---|---|---|---|---|
| RCTi | Single-phase | 250, | 5.0Vrms(±7.07Vmax) | 1% | 0.4W | 300, | ||
| RCTi-3phase | Three-phase | 250, | 5.0Vrms(±7.07Vmax) | 1% | 1.2W | 300, | ||
| RCTrms | Single-phase RMS | 100, | 4-20mA | 1.5% | 0.7W | 2Hz-100KHz | 2Hz-100KHz | 300, |
| RCTrms-3phase | Three-phase RMS | 100, | 4-20mA 0-5v | 1.5%/1% | 300, | |||
| RCT1A | Single-phase | 1A | 1% | 300, |
Series specification comparison
| RCT series categories | Rated current (A) | Rated output (FS) | Output limit (%FS) | Input voltage (Vdc) | Maximum input power (W) | Operating temperature (℃), device / coil | 3dB bandwidth (＜2000A / ≥2000A) (Hz) | Accuracy | Load (KΩ) | Coil length (mm) | Cable length (m) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| RCTi | 250~50000 | 5.0（Vrms） | 150 | 12-24 | 0.4 | -5~+65-20~+80 | ±1.0% | ＞10.0 | 300, | 1m, | |
| RCTi-3phase | 250~50000 | 5.0（Vrms） | 150 | 12-24 | 1.2 | -5~+65-20~+80 | ±1.0% | ＞10.0 | 300, | 1m, | |
| RCTrms | 100~50000 | 4-20(mA) | 150 | 12-24 | 0.7 | -5~+65-20~+80 | 2~100K | ±1.5% | ＜0.3 | 300, | 1m, |
| RCTrms-3phase | 100~50000 | 4-20(mA) | 150 | 12-24 | -5~+65-20~+80 | ±1.0%(0-5V)±1.5%（4-20mA） | ＜0.3（4-20mA） | 300, | 1m, | ||
| RCT1A | 1（A rms） | 120 | 24 | -5~+40-20~+80 | ±1.0% | 0.005~0.00125 | 300, | 1m, |
LFR Rogowski Coil
Model and gain-setting selection
| Model | Sensitivity (mV/A) · ×10 | Sensitivity (mV/A) · ×1 | Peak current (A) · ×10 | Peak current (A) · ×1 | Noise (mV rms) · ×10 | Noise (mV rms) · ×1 | 50Hz phase shift (deg.) | LF(-3dB) low frequency (Hz) | 20kHz phase shift (deg), coil circumference · 300mm | 20kHz phase shift (deg), coil circumference · 700mm | di/dt(kA/µs) · ×10 | di/dt(kA/µs) · ×1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| LFR03/3 | 100.0 | 10.0 | 60.0 | 600.0 | 3.0 | 1.0 | < | 0.45 | 1.8° | 3.0° | 0.015 | 0.25 |
| LFR06/6 | 50.0 | 5.0 | 120.0 | 1.2k | 3.0 | 1.0 | < | 0.23 | 1.8° | 3.0° | 0.03 | 0.5 |
| LFR1/15 | 20.0 | 2.0 | 300.0 | 3.0k | 2.0 | 1.0 | < | 0.15 | 1.8° | 3.0° | 0.1 | 1.2 |
| LFR3/30 | 10.0 | 1.0 | 600.0 | 6.0k | 2.0 | 1.0 | < | 0.10 | 1.8° | 3.0° | 0.2 | 2.5 |
| LFR6/60 | 5.0 | 0.5 | 1.2k | 12.0k | 2.0 | 1.0 | < | 0.08 | 1.8° | 3.0° | 0.4 | 5.0 |
| LFR15/150 | 2.0 | 0.2 | 3.0k | 30.0k | 1.0 | 0.5 | < | 0.07 | 1.8° | 3.0° | 0.9 | 6.0 |
| LFR30/300 | 1.0 | 0.1 | 6.0k | 60.0k | 1.0 | 0.5 | < | 0.07 | 1.8° | 3.0° | 1.8 | 6.0 |
CMC Common-Mode Rogowski Coil
Model selection
| Model | Sensitivity (mV/A) | Peak current (A) | Noise, max. (mVp-p) | Low-frequency bandwidth, 3dB (kHz) | Typical LF(<1%)bandwidth(kHZ) | Peak di/dt（kA/µs） | Bandwidth, 3dB (MHz) · 1m coil |
|---|---|---|---|---|---|---|---|
| CMC015 | 200.0 | 37.5 | 4.0 | 19.0 | 50.0 | 4.0 | |
| CMC03 | 100.0 | 75.0 | 4.0 | 6.0 | 15.0 | 8.0 | |
| CMC06 | 50.0 | 150.0 | 4.0 | 1.9 | 5.0 | 16.0 |
DCFlex DC Rogowski Coil
Series technical specifications
| Parameter | Value |
|---|---|
| Peak current (FS) | 9.999kA, |
| Output (FS) | 1.999V peak |
| Accuracy (typ. | ±1% calibrated at coil center; |
| Operating temperature | 0℃to+40℃ (integrator/display); |
| Power supply | 4xAA (1.5V alkaline batteries) or DC 12V adapter (2.1mm connector) |