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The CWT Ultra mini range features the smallest Rogowski coil on the market.
Maximum coil cross section of 1.7mm, small enough to fit through the legs of a TO-220 semiconductor device.
Wide bandwidth, 30MHz (-3dB) and excellent high frequency performance over a wide temperature range makes the CWT Ultra Mini ideal for measuring pulsed currents and sinusoidal waveforms in power electronic applications.
Performance
Peak current: 30A peak to 6kA peak
Output: ±6.0V peak
High Frequency Bandwidth (-3dB): 30MHz
Low Frequency Bandwidth (-3dB): Varies with model type (refer to datasheet)
Accuracy (typ.): Calibrated to ±0.2% with conductor central in the Rogowski loop. Typical variation with conductor position ±2.0% of reading
Operating temperature range: 0℃ to +40℃ (Integrator electronics) -40℃ to +125℃ (Coil and cable)
Coil Lengths: 80mm (custom lengths available)
Coil thickness: 1.7mm max.
Peak coil insulation: 1.2kV peak
Cable Length (coil to integrator): 1m (custom lengths available)
Power Supply: ‘B' Battery 4 x AA (1.5V standard alkali batteries)Plus - 1.3mm socket for 12V (±10%) DC input. ‘R' Battery 4 x AA (1.2V NiMH batteries) Plus - 1.3mm socket for 12V (±10%) DC input
Output load: ≥ 100.0 kOhm (for rated accuracy, rated sensitivity)= 50 Ohm (for rated accuracy, but half nominal sensitivity)
Application examples:
