Home PMK | Wide-band Current Transformers Precision Wide-Band Current Transformers LILCO® Series
PMK | Wide-band Current Transformers

Precision Wide-Band Current Transformers LILCO® Series

High-precision wide-band current transformers for galvanically isolated AC current measurement from sub-Hz to 60 MHz, with ultra-low droop and high I·t capability up to 24 A·s..

  • Detail
  • Special Features
  • Specification

The LILCO® Series by PMK offers ultra-precise, galvanically isolated current measurements across a wide frequency spectrum—ideal for power electronics, EMC testing, pulse measurements, and other demanding lab environments.

With a bandwidth ranging from 0.004 Hz to over 60 MHz, the LILCO® series supports everything from ultra-low frequency monitoring to RF current analysis. Its exceptionally low droop characteristics enable long-duration pulse integrity, while its high DC saturation threshold ensures minimal distortion even under intense current loads.

Each model provides BNC connectivity, making it directly compatible with oscilloscopes, digitizers, power analyzers, and other standard test equipment using a 50 Ω coaxial cable.

For setups involving large ground potential differences or risk of ground loops, LILCO® provides complete galvanic isolation between input and output, improving measurement reliability and safety.

With models supporting up to 25 kA current, customizable form factors, and optional accessories like the ATT10BNCS attenuator, LILCO® transformers ensure top-tier measurement performance across multiple industries.

All models come with a factory calibration certificate and a comprehensive user manual that offers guidance on maximizing measurement accuracy.

  • Galvanically isolated measurement

  • Ultra-wide bandwidth: 0.004 Hz to >60 MHz

  • Low droop for long-duration pulses

  • High DC saturation immunity

  • I·t capacity up to 24 A·s

  • BNC output for easy connectivity

  • Multiple inner diameter options (13mm, 26mm, 52mm, 58mm, 89mm)

  • Custom models available

  • Delivered with factory calibration certificate

Feature Specification
Bandwidth 0.004 Hz to >60 MHz
Current Range From mA up to 25 kA
I·t Capability Up to 24 A·s
Inner Diameter Options 13mm, 26mm, 52mm, 58mm, 89mm
Output Connector BNC (50 Ω)
Galvanic Isolation Yes
Low Droop / High Accuracy Optimized for pulse integrity
Optional Accessory ATT10BNCS attenuator for enhanced performance
Calibration Delivered with factory certificate
Recommended Calibrator KSZ100D for periodic verification