BELUK - BLR-CXD is a totally tamper proof APFC (AUTOMATIC POWER FACTOR CORRECTION) Relay working on the principle of reactive power detection. Further it is also possible for it to detect a wrong connection of voltage and current path and correct itself to commence operations. BLR-CXD starts its control function and is recognizing capacitor size during standard operation. Settings of c/k values and switching program are not necessary. This configuration is available from 4 step to 14 step control of capacitor banks. It is informative with its auto-scroll of V, THD-V, PF and Cos-Phi as well on its bright back-lit display.