Peak current: 30A peak to 120kA peak
Output : ±6.0V peak corresponding to 'Peak Current' into ≥100kΩ
±3.0V peak corresponding to 'Peak Current' into 50Ω
High Frequency Bandwidth: 30MHz (100mm coil), 23MHz (200mm coil); CWT MiniHF
20MHz (100mm coil); 15MHz (200mm coil); CWT Mini
Low Frequency Bandwidth: 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℃ (CWT MiniHF -Coil and cable)
-20℃ to +100℃ (CWT Mini -Coil and cable)
Coil Lengths :100 or 200mm (custom lengths available)
Coil thickness/Peak coil insulation:2kV peak (3.5mm thickness) *CWT Mini Only
5kV peak (4.5mm thickness)
Cable Length (coil to integrator): 1m, 2.5m or 4m (custom lengths available)
Power Supply : Option ‘B' Battery 4 x AA (1.5V standard alkali batteries) Plus - 2.1mm socket for 12V (±10%) DC input
Option ‘R' Rechargeable Battery 4 x AA (1.2V NiMH batteries) with on-board trickle charge circuitry.
Plus - 2.1mm socket for 12V (±10%) DC input
The CWT Mini and MiniHF are state-of-the art, clip-around, AC Rogowski current probes with a small form factor and virtually zero insertion impedance.
The New CWT MiniHF combines an innovative screened Rogowski coil providing excellent immunity to interference from fast local dV/dt transients or large 50/60Hz voltages and an extended 30MHz (-3dB) high frequency bandwidth for 100mm coils.
The coil has a wide operating temperature from -40°C to +125°C and is available with 5kV peak insulation, 4.5mm thickness.
The CWT is ideal for power electronic development work because it combines an easy-to-use thin, flexible, clip-around coil with an ability to accurately replicate fast switching current waveforms be they sinusoidal, quasi sinusoidal or pulsed.