Description: Prok Devices Private provides earth leakage relay for non-linear applications like ups, invertors, and drives. The M - series ELR are useful in underground mining application. The external termination for healthy indication & fault indication, this feature is help full in observing the indications at a distance. CBCT test facility is useful in checking the healthiness of the relay including the CBCT. CBCT test is achieved by means of operating the CBCT test-key in front fascia. External test & reset are also brought out so that the relay can be tested externally. Tapping for different auxiliary voltage helps in using the ELR at different supply voltages. In H - series ELR the term H denotes harmonics. This H-series is suitable for electrically noisy environment. Power distribution systems are becoming non-linear this necessitates the earth leakage detection system to be more effective in handling harmonics & to prevent spurious/nuisance tripping of earth leakage relay due to high frequency harmonics. The H series relay achieves the above harmonic discrimination by using a built in attenuation mechanism which effectively prevents harmonics to influence the characteristics quantity (leakage current), hence preventing the nuisance tripping of ELR.
