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HomeOscilloscopesAccessoriesCurrent ClampsPEM CWT Mini & CWT MiniHF - Wide-bandwidth AC Rogowski current probes with bandwidths in the range < 1Hz to 30MHz

PEM CWT Mini & CWT MiniHF - Wide-bandwidth AC Rogowski current probes with bandwidths in the range < 1Hz to 30MHz

PEM CWT Mini & CWT MiniHF - Wide-bandwidth AC Rogowski current probes with bandwidths in the range < 1Hz to 30MHz
 
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PEM CWT Mini & CWT MiniHF - Wide-bandwidth AC Rogowski current probes with bandwidths in the range < 1Hz to 30MHz
 
PEM CWT Mini & CWT MiniHF - Wide-bandwidth AC Rogowski current probes with bandwidths in the range < 1Hz to 30MHz
 
 
 
PEM CWT Mini & CWT MiniHF - Wide-bandwidth AC Rogowski current probes with bandwidths in the range < 1Hz to 30MHz
 
 
 
 

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.

Applications

  • Semiconductor Switching Waveforms 
  • Large AC Currents in Generators, Motor Drives and Power Supplies 
  • Pulsed Power Applications 
  • Measuring Small AC Currents in the Presence of Large DC Currents (e.g. capacitor ripple) 
  • Power converter development and diagnosticsHigh frequency Sinusoidal applications - such as Induction Heatingrf currents
 

 

 

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  • Traceable calibration (certificate included)
  • Thin, clip-around, Rogowski coil for easy insertion into circuits with restricted access
  • Maximum coil thickness 3.5mm (2kVpeak) and 4.5mm (5kVpeak)
  • Non-intrusive: Loads the circuit under test by only a few pH's
  • No magnetic materials ensures excellent linearity < 0.05% reading
  • Galvanically isolated measurement

Performance


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


 
Download datasheet »
 
 
Download extra document »
 
 
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E-post: info@instrumentcenter.se  International phone +46 155 26 70 30  Fax +46 155 26 78 30