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Start | Products | Oscilloscopes | Accessories | Current Clamps | PEM CWT Ultra Mini - The smallest Rogowski coil on the market
PEM CWT Ultra Mini - The smallest Rogowski coil on the marketPEM CWT Ultra Mini - The smallest Rogowski coil on the marketPEM CWT Ultra Mini - The smallest Rogowski coil on the market
  • PEM CWT Ultra Mini - The smallest Rogowski coil on the market
  • PEM CWT Ultra Mini - The smallest Rogowski coil on the market
  • PEM CWT Ultra Mini - The smallest Rogowski coil on the market

PEM CWT Ultra Mini - The smallest Rogowski coil on the market

Art. nr: PEM CWT Ultra Mini - The thinnest CWT coil availab

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Product description

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)

 

 

More information

Application examples:

  • Switching Waveforms in Power Electronic Circuits
  • Measuring Small AC Currents in the Presence of Large DC Currents (e.g. capacitor ripple) 
  • Power converter development and diagnostics Measuring hf harmonics
  • rf currents
Features:
  • Traceable calibration (certificate included)
  • Maximum coil thickness 1.7mm
  • Non-intrusive: Loads the circuit under test by only a few pH's
  • No magnetic materials means excellent linearity < 0.05% reading
  •  Fully isolated measurement
    - Coil rated at 1.2kVpeak (withstand test is 3kVrms / 50Hz / 60 sec)