Lilco Wide Band Current Measurement Transformer Lilco Ltd. has exploited developments of modern magnetic and resistive materials to produce a range of current transformers capable of faithfully reproducing current waveforms over a bandwidth which extends from a few hertz to greater than 50MHz. Whether the requirement is to measure capacitor discharge pulses of thousands of amps or milliamp currents in lf or hf electronic circuitry, it will be found that a Lilco current transformer is capable of satisfying the application. When a transformer is used to monitor current, the measurement circuit is electrically isolated from the circuit under investigation. This is a major advantage when compared with the use of shunt resistors. The isolation proves invaluable when other measurements, such as voltage, are to be monitored simultaneously.
Isolation avoids the problems of ground loops and provides protection from high-voltage conductors.
The magnetic construction and screening minimises the pickup of unwanted signals and current transformers are impressively immune to noise. Negligible Burden Current transformers impose a negligible burden and their use has insignificant effect on the performance of circuits examined. They are passive devices. Their ability to operate without a power source facilitates their permanent instalation in equipment and avoids distortion that could be introduced by electronics. Lilco current transformers have superior accuracy and higher frequency response than other devices which operate on the principle of magnetic coupling, such as Rogowski coils and Hall-effect devices.