Slide 1: LeaXield® active leakage current filter
LeaXield® active leakage current filter © TDK Electronics AG 2020 The LeaXield® active leakage current filter MAG PEMC 10/20 1
Slide 2: Earth leakage currents – A cost and safety risk
Earth leakage currents – A cost and safety risk ● High earth leakage currents are typical for ● Machine downtimes can lead to high costs variable-speed drives ● Plant availability is not ensured ● RCDs (residual current devices) often trip by mistake A compact and economic solution is needed! © TDK
Slide 3: Introducing LeaXield®
Introducing LeaXield® ● Active compensation of earth leakage currents over a broad frequency range ● Installed between the RCD and the EMC filter ● No additional power supply needed ● Very convenient installation, especially in existing systems © TDK Electronics AG 2020 The LeaXield® active leakag
Slide 4: Functional principle of LeaXield®
Functional principle of LeaXield® Leakage currents ● Residual current from the load side is measured ● Electronics generates a 180° phase-shifted current with same amplitude ● This current is applied to each phase by capacitive coupling No earth leakage current flows through the RCD Unintended t
Slide 5: Drastic reduction of earth leakage currents
Drastic reduction of earth leakage currents Aggregate earth leakage currents can reach significant levels © TDK Electronics AG 2020 The LeaXield® active leakage current filter MAG PEMC 10/20 5
Slide 6: Drastic reduction of earth leakage currents
Drastic reduction of earth leakage currents Aggregate earth leakage currents can reach significant levels LeaXield® effectively compensates earth leakage currents of up to 1 A © TDK Electronics AG 2020 The LeaXield® active leakage current filter MAG PEMC 10/20 6
Slide 7: Effective leakage current compensation from 150 Hz up to 30 kHz
Effective leakage current compensation from 150 Hz up to 30 kHz Variable leakage currents reach values of several hundred mA Stationary leakage currents up to 1 kHz are critical for many variable-speed drives © TDK Electronics AG 2020 The LeaXield® active leakage current filter MAG PEMC 10/20
Slide 8: Effective leakage current compensation from 150 Hz up to 30 kHz
Effective leakage current compensation from 150 Hz up to 30 kHz Variable leakage currents reach values of several hundred mA Stationary leakage currents up to 1 kHz are critical for many variable-speed drives LeaXield prevents unwanted tripping of the RCD by keeping earth leakage currents well below
Slide 9: Immediate earth leakage current compensation
Immediate earth leakage current compensation High leakage current peaks occur already during the switching-on phase © TDK Electronics AG 2020 The LeaXield® active leakage current filter MAG PEMC 10/20 9
Slide 10: Immediate earth leakage current compensation
Immediate earth leakage current compensation High leakage current peaks occur already during the switching-on phase The optional contactor triggering function puts LeaXield® into a steady state before leakage currents flow LeaXield® prevents the RCD from tripping when mains voltage is switched on
Slide 11: LeaXield® is now available!
LeaXield® is now available! ● High earth leakage current compensation up to 1 A ● Convenient installation – ● Optimized RCD compatibility no external power supply needed ● Improves plant availability ● Compact solution Key data Maximum leakage current ILK,load (peak) 1A Frequency range 150 Hz to 30
Slide 12: www.tdk-electronics.tdk.com
www.tdk-electronics.tdk.com