FEATURES : Upto to 18 Parameter Measurements The instrument measures 18 electrical parameters of 3 Phase network. High Accuracy Accuracy > 0.5 % for voltage, current and kVA On Site Programmable PT/ CT Ratios. It is possible to program primary of external potential transformer ( PT) , primary of external current transformer ( CT) on site with front panel keys and entering into programming mode. User Selectable CT secondary 5A/ 1A . The secondary of external current transformer ( CT) can be programmed on site to either 5A or 1A using front panel keys. User Selectable 3 Phase 3W or 4W. User can program on site the network connection as either 3 phase, 3 wire or 3 phase 4 wire using front panel keys. Low Back Depth: The instrument has very low back depth ( behind the panel) of less than 80 mm. True RMS Measurement. The instrument measures distorted waveform up to 15th harmonic. Neutral Current Measurement ( for 4 wire only) . The instrument measures neutral current in 3 phase 4 wire unbalanced load network.